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Home/Medical calculators

Medical calculators

YMed Atlas hosts interactive scores and calculators used in daily practice—stroke prevention, pulmonary embolism risk, sepsis, pediatrics, hepatology, and more. Every tool includes references; use results as an adjunct to bedside assessment and current society guidelines.

Educational reference only. Not medical advice; not a substitute for independent clinical judgment or institutional policy.

Open searchable tools view →Drug monographs & dosing →Guidelines →Drug interaction checker →

Browse by specialty

  • Cardio-Oncology(2 tools)
  • Cardiology(17 tools)
  • Cardiology / Infectious Diseases(1 tools)

All calculators (A–Z)

  • HFA-ICOS Baseline Cardio-Oncology Risk (MM therapies, simplified)

    Simplified baseline cardiovascular risk checklist for multiple myeloma therapy planning.

    Cardio-Oncology · Oncology · Updated 4/19/2026

  • HFA-ICOS Baseline Cardio-Oncology Risk (VEGF inhibitors, simplified)

    Simplified baseline cardiovascular risk checklist before VEGF inhibitor therapy.

    Cardio-Oncology · Oncology · Updated 4/19/2026

  • 2023 Duke-ISCVID Criteria — Infective Endocarditis

    Major/minor checklist aligned with the 2023 Duke–ISCVID update (expanded microbiology and multimodality imaging) using operational definite/possible thresholds.

    Cardiology · Infectious Disease · Updated 4/19/2026

  • ACC/AHA Heart Failure Stages (A–D)

    Phenotype staging from at-risk (A) through advanced symptomatic HF (D) with ACC/AHA 2022-style definitions.

    Cardiology · Heart Failure · Updated 4/19/2026

  • ACEF-II Risk Score — Cardiac Surgery

Frequently asked questions

Are YMed Atlas calculators validated clinical tools?
Each calculator is built from published criteria and citations listed on the tool page. Always confirm with primary sources, your institution's pathways, and the patient in front of you.
Can patients use these calculators?
These tools are intended for clinicians, residents, and qualified learners. Patients should discuss results with a licensed professional.
How do I find a specific calculator (e.g. CHA₂DS₂-VASc or Wells score)?
Use the list below, open your specialty hub, or use the in-app medical tools search. Calculator URLs use readable names for sharing and citation.
Cardiology / Primary Care(1 tools)
  • Clinical Pharmacology(2 tools)
  • Critical Care(11 tools)
  • Critical Care / Pediatrics(2 tools)
  • Emergency / Infectious Diseases(2 tools)
  • Emergency / Pulmonology(1 tools)
  • Emergency Medicine(11 tools)
  • Endocrinology(4 tools)
  • Endocrinology / Pediatrics(1 tools)
  • Family Medicine(2 tools)
  • Gastroenterology(33 tools)
  • General(9 tools)
  • General / Pediatrics(1 tools)
  • General Pediatrics(1 tools)
  • Genetics / Metabolism(1 tools)
  • Geriatrics(5 tools)
  • Gynecology(1 tools)
  • Hematology(10 tools)
  • Hematology / Pediatrics(1 tools)
  • Hepatology(11 tools)
  • Hepatology / Pediatrics(4 tools)
  • Hepatology / Surgery(1 tools)
  • Hepatology / Transplant(1 tools)
  • Immunology(6 tools)
  • Infectious Disease(5 tools)
  • Laboratory Medicine(8 tools)
  • Metabolic Genetics(1 tools)
  • Neonatology(8 tools)
  • Neonatology / Pediatrics(1 tools)
  • Nephrology(34 tools)
  • Nephrology / Apheresis(1 tools)
  • Nephrology / Emergency(1 tools)
  • Neurology(5 tools)
  • Neurology / Infectious Diseases(1 tools)
  • Nursing(1 tools)
  • Nutrition(6 tools)
  • Nutrition / Pediatrics(1 tools)
  • Obstetrics(5 tools)
  • Obstetrics / Hematology(1 tools)
  • Obstetrics / Pediatrics(1 tools)
  • Obstetrics & Gynecology(1 tools)
  • Oncology(18 tools)
  • Oncology / Pediatrics(1 tools)
  • Orthopedics / Pediatrics(2 tools)
  • Pediatric Oncology(5 tools)
  • Pediatrics(61 tools)
  • Pediatrics / Endocrinology(1 tools)
  • Pharmacology(2 tools)
  • Psychiatry(19 tools)
  • Psychiatry / Neurodevelopment(1 tools)
  • Pulmonology(13 tools)
  • Pulmonology / Pediatrics(3 tools)
  • Radiology(1 tools)
  • Research Methods(1 tools)
  • Rheumatology(15 tools)
  • Urology(12 tools)
  • Age/LVEF ratio + creatinine >2, emergency surgery, and hematocrit <36% anemia term (Ranucci).

    Cardiology · Cardiac Surgery · Updated 4/19/2026

  • ARC-HBR — High Bleeding Risk (PCI)

    Academic Research Consortium: ≥1 major or ≥2 minor criteria for trial-style HBR designation.

    Cardiology · Interventional · Updated 4/19/2026

  • Cardiac Output (Fick's Formula) Calculator

    Estimates cardiac output from oxygen consumption and arteriovenous oxygen content difference.

    Cardiology · Hemodynamics · Updated 4/19/2026

  • CHA₂DS₂-VASc Score

    Stroke risk stratification for patients with non-valvular atrial fibrillation. Calculates annual stroke risk and guides anticoagulation decisions based on clinical risk factors.

    Cardiology · Anticoagulation · Updated 4/19/2026

  • CHA₂DS₂-VASc Score (AF Stroke Risk)

    Atrial fibrillation stroke risk score using congestive heart failure, hypertension, age, diabetes, prior stroke/TIA, vascular disease, and sex.

    Cardiology · Risk Assessment · Updated 4/19/2026

  • Corrected QTc Calculator

    Calculates QTc using Bazett, Fridericia, and Framingham formulas.

    Cardiology · Electrocardiography · Updated 4/19/2026

  • Dutch Criteria Familial Hypercholesterolemia (FH) Calculator

    Dutch Lipid Clinic Network point-based FH classification (definite/probable/possible/unlikely).

    Cardiology · Lipid Disorders · Updated 4/19/2026

  • ECG normal values (Ped(z)-style)

    Age-stratified pediatric ECG reference limits (HR, PQ/PR, QRS, Q III/aVF/V5/V6) from DOB and reference date. Embedded UTMB summary of Park & Guntheroth (2006); Q aVF/V5 interpolated where the source lists only III/V6. Not affiliated with pedz.de.

    Cardiology · Electrocardiography · Updated 4/19/2026

  • Endocarditis Diagnostic Criteria (Duke) Calculator

    Modified Duke criteria support for infective endocarditis classification.

    Cardiology · Infectious Disease · Updated 4/19/2026

  • Jones Criteria for Diagnosis of Rheumatic Fever

    Simplified Jones criteria checklist for acute rheumatic fever (requires evidence of preceding GAS infection).

    Cardiology · Rheumatology · Updated 4/19/2026

  • LDL Cholesterol (Calculated / Non–HDL-C)

    Calculates LDL-C using the Friedewald equation when triglycerides are < 400 mg/dL, or reports non–HDL-C (TC − HDL) as an alternative marker.

    Cardiology · Lipid Disorders · Updated 4/19/2026

  • Mehran Score (post-PCI CIN, simplified)

    Simplified contrast-nephropathy risk estimate after PCI.

    Cardiology · Nephrology · Updated 4/19/2026

  • Natriuretic Response Prediction Equation (simplified)

    Simplified natriuretic response index from urine/serum values and loop dose.

    Cardiology · Heart Failure · Updated 4/19/2026

  • QTc (Bazett, Ped(z)-style)

    QTc (ms) from QT and HR or RR using Bazett (QT/√RR). Inspired by Ped(z) QTc; use the Corrected QTc tool for Fridericia/Framingham. Not affiliated with pedz.de.

    Cardiology · Electrocardiography · Updated 4/19/2026

  • US (MEDPED) Diagnostic Criteria for Familial Hypercholesterolemia (FH)

    Age- and relation-specific total cholesterol screening thresholds.

    Cardiology · Lipid Disorders · Updated 4/19/2026

  • Suspicious Index in Lyme Carditis (SILC) score

    Six-factor suspicion score for Lyme carditis.

    Cardiology / Infectious Diseases · Infectious Calculators · Updated 4/19/2026

  • SCORE2 (European 10-year CVD Risk)

    ESC 2021 fatal + non-fatal CVD risk for ages ~40–69 without diabetes; region-recalibrated.

    Cardiology / Primary Care · Risk Scores · Updated 4/19/2026

  • Drug Interaction Calculator

    Educational pairwise drug interaction checker for selected medications.

    Clinical Pharmacology · Drug Safety · Updated 4/19/2026

  • Food Interaction Checker

    Educational food-drug interaction checker for selected common pairs.

    Clinical Pharmacology · Drug Safety · Updated 4/19/2026

  • APACHE II Score Calculator

    Interprets APACHE II total score (0-71) with broad mortality risk bands.

    Critical Care · Severity Scoring · Updated 4/19/2026

  • Bicarbonate and Base Excess Calculator

    Estimates base excess from bicarbonate and pH inputs.

    Critical Care · Acid-Base · Updated 4/19/2026

  • Blood Volume Calculation Calculator

    Estimates total blood volume by weight and age group.

    Critical Care · Fluids · Updated 4/19/2026

  • Burns Fluid Requirement Calculator

    Parkland formula estimate for first 24-hour burn resuscitation fluid.

    Critical Care · Fluids · Updated 4/19/2026

  • Calcium Equivalents Calculator

    Converts elemental calcium to mmol/mEq and injectable calcium salt equivalents.

    Critical Care · Electrolytes · Updated 4/19/2026

  • Ideal Body Weight

    Devine formula-based ideal body weight from height (inches) and sex; calculates target tidal volume using desired mL/kg (educational).

    Critical Care · Respiratory · Updated 4/19/2026

  • Intravenous Fluid

    Maintenance + dehydration deficit replacement using Holliday-Segar style method (educational).

    Critical Care · Fluids · Updated 4/19/2026

  • Mean Arterial Pressure (MAP)

    Mean arterial pressure approximation: MAP = (SBP + 2 × DBP) / 3.

    Critical Care · Hemodynamics · Updated 4/19/2026

  • Mean Vascular Blood Pressure (MVBP)

    Mean vascular blood pressure approximation from SBP/DBP (computed using the same mean-pressure model).

    Critical Care · Hemodynamics · Updated 4/19/2026

  • Oxygen Saturation Index

    OSI calculation and simplified interpretation using FiO2%, mean airway pressure, and SpO2%.

    Critical Care · Respiratory · Updated 4/19/2026

  • Winter's Formula

    Expected respiratory compensation in metabolic acidosis.

    Critical Care · Acid-Base · Updated 4/19/2026

  • Pediatric Intensive Care Unit

    Generic PICU infusion calculator using selected drug, weight, and concentration to compute mL/hour (UI/testing approximation).

    Critical Care / Pediatrics · Pharmacology · Updated 4/19/2026

  • Predictive Indices for Weaning

    CROP index weaning predictor computed from PImax, pressures, tidal volume and oxygenation.

    Critical Care / Pediatrics · Respiratory · Updated 4/19/2026

  • Rochester Criteria for Febrile Infants

    Low-risk febrile infant checklist (clinical + lab gates).

    Emergency / Infectious Diseases · Infectious Calculators · Updated 4/19/2026

  • Step-by-Step Approach to Febrile Infants

    Mintegi-style sequential screen for young febrile infants.

    Emergency / Infectious Diseases · Infectious Calculators · Updated 4/19/2026

  • Westley Croup Score

    Five-domain croup severity sum (Westley 1978).

    Emergency / Pulmonology · Respiratory Calculators · Updated 4/19/2026

  • 4PEPS — Pulmonary Embolism Clinical Probability

    Four-level weighted clinical pretest probability (13 variables, −2 to +5 points) with linked D-dimer/imaging strategies from derivation studies.

    Emergency Medicine · Pulmonology · Updated 4/19/2026

  • ABC Score — Massive Transfusion (Trauma)

    Penetrating mechanism, hypotension, tachycardia, positive FAST — each +1; ≥2 suggests MTP activation context.

    Emergency Medicine · Trauma / Transfusion · Updated 4/19/2026

  • Acetaminophen Overdose and NAC Dosing Calculator

    Computes standard NAC dosing by body weight for IV or oral regimens used in acute acetaminophen overdose.

    Emergency Medicine · Toxicology · Updated 4/19/2026

  • Acetaminophen Toxicity Nomogram Calculator

    Interprets plasma acetaminophen concentration against post-ingestion time using a treatment-line nomogram framework.

    Emergency Medicine · Toxicology · Updated 4/19/2026

  • AIS — Inhalation Injury Grade (0–4)

    Bronchoscopic inhalation injury severity ordinal (0–4) with brief mortality-context notes for burn pathways.

    Emergency Medicine · Burns / Trauma · Updated 4/19/2026

  • Alvarado Score for Acute Appendicitis Calculator

    Computes the Alvarado (MANTRELS) score (0-10) from symptoms, signs, and laboratory findings.

    Emergency Medicine · Diagnosis · Updated 4/19/2026

  • Antivenom Dosing Algorithm

    Severity-based initial and repeat antivenom dose guidance pathway.

    Emergency Medicine · Toxicology · Updated 4/19/2026

  • Appendicitis Inflammatory Response (AIR) Score Calculator

    AIR score (0-12) based on vomiting, RLQ pain, rebound/guarding, temperature, WBC, neutrophils, and CRP.

    Emergency Medicine · Diagnosis · Updated 4/19/2026

  • ED COVID-19 — Vitals Triage (Educational)

    SpO₂, RR, mental status, comorbid flag for coarse ED acuity tiers; not a substitute for national ACEP/CDC documents.

    Emergency Medicine · Infectious Disease · Updated 4/19/2026

  • Palchak (UC Davis) Rule for Pediatric Head Trauma

    Low-risk determination if Palchak criteria are absent; scalp hematoma considered only if age <=2 (simplified).

    Emergency Medicine · Neurology · Updated 4/19/2026

  • Pediatric NEXUS II Head CT Decision Instrument for Blunt Trauma

    NEXUS II head CT decision rule for blunt pediatric head trauma: CT if any criteria present; otherwise CT can be avoided.

    Emergency Medicine · Neurology / Imaging · Updated 4/19/2026

  • Estimated Average Glucose (eAG) from HbA1c

    ADAG linear mapping from HbA1c to estimated average glucose (mg/dL and mmol/L).

    Endocrinology · Diabetes · Updated 4/19/2026

  • Hemoglobin A1C Estimation from Mean Plasma Glucose

    Estimated HbA1c from mean plasma glucose (and related eAG conversions) using common ADAG-style linear relationships.

    Endocrinology · Diabetes · Updated 4/19/2026

  • Pediatric Bone Disease Calculator

    Educational approximation using simplified density proxy (reference curve based DXA scoring not fully implemented).

    Endocrinology · Bone Health · Updated 4/19/2026

  • Thyroid Function Tests

    Broad pediatric thyroid hormone reference bands by age.

    Endocrinology · Laboratory Calculators · Updated 4/19/2026

  • Pediatric target height (mid-parental)

    Expected adult stature from father and mother height and child sex—same clinical role as Ped(z) target height (mph). Standard midpoint (boys +13 cm / girls −13 cm vs mean parental height) with an approximate ±8.5 cm corridor; Ped(z) adds Hermanussen auxology and country-specific references for tighter intervals.

    Endocrinology / Pediatrics · Growth · Updated 4/19/2026

  • Abuse Assessment Screen (AAS)

    Brief IPV/harm screen with positive-response routing language; private screening context required.

    Family Medicine · Social Determinants · Updated 4/19/2026

  • FeverPAIN Score (Strep Pharyngitis)

    Five-item score for antibiotic stewardship context in sore throat.

    Family Medicine · Infectious Disease · Updated 4/19/2026

  • Bristol Stool Form Scale

    Visually classifies stool into 7 types (hard pellets to watery) with clinical interpretation, gut transit time estimates, and management guidance for constipation and diarrhoea.

    Gastroenterology · Gastrointestinal · Updated 4/19/2026

  • Child-Pugh Score

    Cirrhosis severity: bilirubin, albumin, INR, ascites, encephalopathy. Classes A/B/C.

    Gastroenterology · Liver · Updated 4/19/2026

  • Eckardt Score (Achalasia) Calculator

    Esophageal achalasia severity index from weight loss, duration, dilatation, and sigmoid esophagus.

    Gastroenterology · Esophageal · Updated 4/19/2026

  • Estimated Mean Liver Span (MCL)

    Height-adjusted rough percussion span estimate for adult context.

    Gastroenterology · Physical Exam · Updated 4/19/2026

  • Glasgow-Blatchford Bleeding Score (GBS)

    Pre-endoscopy risk stratification for acute upper gastrointestinal bleeding.

    Gastroenterology · Emergency Medicine · Updated 4/19/2026

  • Hepatocellular carcinoma(HCC) Risk Calculator

    Ioannou et al. model-inspired educational estimate of 3-year HCC risk using cirrhosis/SVR and lab/demographic inputs.

    Gastroenterology · Liver · Updated 4/19/2026

  • IGERQ score

    Infant Gastroesophageal Reflux Questionnaire (IGERQ) total score (simplified mapping) and interpretation using a score cut-off around 5.

    Gastroenterology · Pediatrics · Updated 4/19/2026

  • International Autoimmune Hepatitis Group (IAIHG) simplified score

    IAIHG simplified AIH scoring using autoantibodies, IgG level, liver histology, and viral hepatitis exclusion (educational).

    Gastroenterology · Liver · Updated 4/19/2026

  • Irritable Bowel Syndrome Diagnostic Criteria (Manning Criteria)

    Manning criteria checklist for IBS; meets if >= 3/6 features are present (educational).

    Gastroenterology · Gastrointestinal · Updated 4/19/2026

  • ISHAK scoring on liver histopathology

    ISHAK necroinflammatory activity index (activity components summed) and fibrosis stage from histology selections (educational).

    Gastroenterology · Liver · Updated 4/19/2026

  • King's College Criteria for Acetaminophen Toxicity and Indication for Liver Transplant

    King's College criteria for acetaminophen-related ALF: meets if arterial pH < 7.30 OR (INR > 6.5 + creatinine > 3.4 + HE grade III/IV).

    Gastroenterology · Liver Failure · Updated 4/19/2026

  • King's College Criteria for Non-Acetaminophen related acute liver failure and Indication for Liver Transplant

    King's College criteria for non-acetaminophen ALF: meets if PT > 100s (INR > 6.5) OR >=3 of 5 minor criteria.

    Gastroenterology · Liver Failure · Updated 4/19/2026

  • NAFLD (Non-Alcoholic Fatty Liver Disease) Activity Score

    Kleiner 2005 NAS: steatosis grade + lobular inflammation + ballooning (0–8).

    Gastroenterology · Hepatology · Updated 4/19/2026

  • Normal Values of Primary and Total Bile Acids

    Educational simplified primary and total bile acid reference ranges.

    Gastroenterology · Laboratory Medicine · Updated 4/19/2026

  • Paediatric Crohn’s Disease Activity Index

    Simplified educational PCDAI scoring based on selected clinical categories (0–100).

    Gastroenterology · Inflammatory Bowel Disease · Updated 4/19/2026

  • Pediatric Ulcerative Colitis Activity Index (PUCAI)

    PUCAI index (0–85) from daily symptoms: abdominal pain, rectal bleeding, stool consistency, stool frequency, nocturnal stools, and activity.

    Gastroenterology · Inflammatory Bowel Disease · Updated 4/19/2026

  • Reflux Finding Score

    Belafsky RFS from laryngoscopic findings; >7 suggests LPR on Pediatric Oncall.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Reflux Symptom Index

    RSI from nine 0–5 symptom items; ≥13 clinically significant on Pediatric Oncall.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rockall score for upper gastrointestinal bleeding

    Pre-endoscopy Rockall (age, shock, comorbidity).

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rockall Score for Upper GI Bleeding (Complete)

    Full Rockall score including endoscopic diagnosis and stigmata of recent hemorrhage.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Abdominal Migraine

    Simplified Rome IV abdominal migraine checklist.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Aerophagia

    Simplified Rome IV aerophagia checklist.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 criteria for constipation

    Functional constipation: ≥2 Rome criteria with duration and exclusion.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Cyclic Vomiting Syndrome

    Simplified Rome IV CVS checklist.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Functional Abdominal Pain-NOS

    Simplified FAP-NOS checklist.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Functional Dyspepsia

    Core Rome IV FD symptoms with duration.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Functional Nausea and Functional Vomiting

    Simplified FNVS-style checklist.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Irritable Bowel Syndrome

    Rome IV IBS checklist aligned with Pediatric Oncall structure.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Nonretentive Fecal Incontinence

    Simplified NFI checklist (age ≥4 years).

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Rome 4 Criteria for Rumination Syndrome

    Simplified Rome IV rumination checklist.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Serum Ascites Albumin Gradient(SAAG)

    SAAG = serum albumin minus ascites albumin (g/dL).

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Severity of Acute Pancreatitis Score

    Pediatric severe acute pancreatitis feature count (≥3 flagged).

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • Stool Osmolar/Osmotic Gap

    Fecal osmotic gap from electrolytes ± measured stool osmolality.

    Gastroenterology · GI and Liver Calculators · Updated 4/19/2026

  • BMI Calculator

    Calculate Body Mass Index (BMI) to assess weight status based on height and weight.

    General · Nutritional · Updated 4/19/2026

  • Body surface area (Mosteller / DuBois)

    BSA (m²) from height (cm) and weight (kg) using Mosteller (1987) or DuBois (1916), matching Ped(z) BSA options. Not affiliated with pedz.de.

    General · General Calculators · Updated 4/19/2026

  • Body Surface Area Gehan and George Method Calculator

    Calculates BSA using the Gehan and George equation.

    General · General · Updated 4/19/2026

  • Conversion to Inches Calculator

    Converts length in centimeters to inches and feet-inches format.

    General · Unit Conversion · Updated 4/19/2026

  • Heart Rate

    Interactive clinical calculator (HeartRateCalculator).

    General · Medical calculators · Updated 4/19/2026

  • Maintenance Fluids Calculations

    Calculates maintenance fluid requirements by weight using the Holliday-Segar method (4-2-1 rule). Applicable to any age; consider ideal body weight in obese patients.

    General · Critical Care · Updated 4/19/2026

  • Nutritional Risk Index (NRI)

    Nutrition risk estimate from albumin and current/ideal body weight.

    General · Nutrition · Updated 4/19/2026

  • Temperature °C to °F

    Celsius ↔ Fahrenheit conversion.

    General · Conversion Calculators · Updated 4/19/2026

  • Toronto Staging Hub

    Interactive clinical calculator (TorontoStagingHub).

    General · Medical calculators · Updated 4/19/2026

  • pound to kg

    Weight conversion using 1 lb = 0.45359237 kg.

    General / Pediatrics · Conversions · Updated 4/19/2026

  • Weight

    Mass with optional height to show BMI (adult cutoffs annotated; growth charts for children).

    General Pediatrics · Growth Calculators · Updated 4/19/2026

  • Recognition Pattern of Mucopolysaccharidoses

    Educational enzyme–phenotype recognition notes for major MPS types.

    Genetics / Metabolism · Genetic Calculators · Updated 4/19/2026

  • 4AT — Rapid Delirium Assessment

    Four-item bedside screen (alertness, AMT4, attention, acute change/fluctuation); score ≥4 suggests possible delirium.

    Geriatrics · Neurology · Updated 4/19/2026

  • Abbey Pain Scale for Dementia Patients

    Assessment tool for measuring pain in people with dementia who cannot verbalize their pain.

    Geriatrics · Pain Management · Updated 4/19/2026

  • AMT-10 (Abbreviated Mental Test)

    Ten-item cognitive screen; count correct (0–10) with common ≤6 impairment cutoff (local validation).

    Geriatrics · Neurology · Updated 4/19/2026

  • AMT-4 (Abbreviated Mental Test — 4 items)

    Four orientation items; score number correct — often screen at ≤2 abnormal.

    Geriatrics · Neurology · Updated 4/19/2026

  • Katz Index of Independence in ADL

    Assesses independence in six activities of daily living (score 0-6).

    Geriatrics · Functional Assessment · Updated 4/19/2026

  • Ovulation Date

    Estimates ovulation date and fertile window using LMP and cycle length.

    Gynecology · Reproductive Health · Updated 4/19/2026

  • 4Ts Score — Heparin-Induced Thrombocytopenia

    Pretest clinical probability for HIT from thrombocytopenia pattern, timing, thrombosis sequelae, and alternative diagnoses (0–8).

    Hematology · Coagulation · Updated 4/19/2026

  • Blood Group Inheritance (ABO)

    Punnett phenotype distribution from parental ABO genotypes.

    Hematology · Transfusion Medicine · Updated 4/19/2026

  • Coagulation Profile Calculator

    Computes PT ratio (INR approximation), aPTT ratio, and reports fibrinogen.

    Hematology · Coagulation · Updated 4/19/2026

  • Cryoprecipitate Dosing for Fibrinogen Replacement

    Estimates cryoprecipitate units required to reach target fibrinogen.

    Hematology · Transfusion Medicine · Updated 4/19/2026

  • Donor Lymphocyte Infusion (DLI) Volume Calculator

    Estimates DLI infusion volume from target CD3 dose, patient weight, and product concentration.

    Hematology · Transplant Medicine · Updated 4/19/2026

  • Drugs to Avoid in G6PD Deficiency Calculator

    Educational oxidant-risk categorization of medications in G6PD deficiency.

    Hematology · Drug Safety · Updated 4/19/2026

  • Mentzer Index for Thalassemia

    Mentzer index = MCV (fL) / RBC (million/µL). Index < 13 suggests thalassemia trait; >= 13 suggests iron deficiency.

    Hematology · Laboratory Medicine · Updated 4/19/2026

  • Sickle Cell RBC Exchange Volume

    RBC apheresis exchange volume estimate from HbS targets (approximate).

    Hematology · Hematology Calculators · Updated 4/19/2026

  • Total iron deficit

    Parenteral iron deficit estimate from weight, Hb delta, and depot iron.

    Hematology · Infusion Calculators · Updated 4/19/2026

  • WBC Count

    Total WBC age-specific reference ×10³/µL.

    Hematology · Laboratory Calculators · Updated 4/19/2026

  • Predicting Risk of Severe Complications in a child with Sickle cell disease (Miller et al)

    Miller et al. early risk factor checklist (dactylitis <1y, leukocytosis, hemoglobin <7 g/dL) with risk stratification.

    Hematology / Pediatrics · Hematology · Updated 4/19/2026

  • AARC Score and ACLF Grade Calculator

    Calculates the AARC-ACLF score (5-15) and grade from bilirubin, HE grade, INR, lactate, and creatinine bands.

    Hepatology · Liver · Updated 4/19/2026

  • ABIC Score — Alcoholic Hepatitis

    Age, bilirubin, INR, creatinine (mg/dL) — low/intermediate/high 90-day risk bands.

    Hepatology · Liver · Updated 4/19/2026

  • AST to Platelet Ratio Index (APRI) Calculator

    Computes APRI from AST, AST upper limit of normal, and platelet count.

    Hepatology · Liver · Updated 4/19/2026

  • CLIF-C ACLF Calculator

    Computes CLIF-C ACLF score from CLIF-OF, age, and WBC.

    Hepatology · Liver · Updated 4/19/2026

  • EASL-Style Chronic Hepatitis B Treatment Screen

    Educational checklist for HBV DNA, ALT, fibrosis, and risk context consistent with international CHB management themes.

    Hepatology · Liver · Updated 4/19/2026

  • FIB-4 Index (Liver Fibrosis)

    AST, ALT, platelets, age fibrosis index for hepatitis/NAFLD risk stratification.

    Hepatology · Liver · Updated 4/19/2026

  • MELD SCORE

    MELD-Na calculator (modern educational implementation) with creatinine adjustment, dialysis option, and sodium correction.

    Hepatology · Liver Failure · Updated 4/19/2026

  • MELD Score (12+ older model)

    Legacy MELD score (non-Na) from bilirubin, INR, and creatinine.

    Hepatology · Liver · Updated 4/19/2026

  • MELD Score (original pre-2016)

    Original MELD (pre-modern policy adjustments) educational implementation.

    Hepatology · Liver · Updated 4/19/2026

  • Normal values of ALT, AST, and GGT

    Educational simplified adult-style reference ranges for ALT/AST/GGT.

    Hepatology · Laboratory Medicine · Updated 4/19/2026

  • Wilson Index for Predicting Mortality

    Educational Wilson disease severity scoring (uses modified Leipzig calculator implementation on this site).

    Hepatology · Hepatology Calculators · Updated 4/19/2026

  • Pediatric NAFLD Fibrosis Score (PNFS)

    PNFS probability (%) of advanced pediatric NAFLD fibrosis (stage ≥3) from ALT, alkaline phosphatase, platelets, and GGT.

    Hepatology / Pediatrics · Liver · Updated 4/19/2026

  • Pediatric NAFLD Histological Score (PNHS)

    PNHS categorizes pediatric NAFLD histology activity using steatosis, ballooning, lobular inflammation, and portal inflammation.

    Hepatology / Pediatrics · Liver · Updated 4/19/2026

  • PELD

    PELD (Pediatric End-Stage Liver Disease) score for pediatric liver transplant prioritization (younger than 12 years): ln(bilirubin), ln(INR), ln(albumin) plus age<1 and growth failure terms.

    Hepatology / Pediatrics · Liver Transplant · Updated 4/19/2026

  • Proposed scoring criteria for the diagnosis of juvenile autoimmune liver disease

    Proposed pediatric autoimmune liver disease scoring system for AIH/ASC classification (simplified weights in UI).

    Hepatology / Pediatrics · Liver · Updated 4/19/2026

  • VOCAL–Penn Cirrhosis Surgical Risk Score

    Adjunct data-capture for VOCAL–Penn variables with link to the spline-validated mortality calculator.

    Hepatology / Surgery · Risk Scores · Updated 4/19/2026

  • Rejection Activity Index

    Banff-style RAI sum (portal, bile duct, venous endothelium grades 1–3 each).

    Hepatology / Transplant · GI and Liver Calculators · Updated 4/19/2026

  • Antibodies and Associated Diseases Calculator

    Educational lookup linking selected antibodies to commonly associated diseases.

    Immunology · Laboratory Medicine · Updated 4/19/2026

  • Immunoglobulin IgG Subclass Levels

    Age-grouped reference ranges for IgG subclasses (IgG1–IgG4) using pediatric reference interval lookup (educational).

    Immunology · Laboratory Medicine · Updated 4/19/2026

  • Immunoglobulin Reference Values

    Age-grouped pediatric reference intervals for IgG, IgA, IgM, plus total IgE (simplified model) (educational).

    Immunology · Laboratory Medicine · Updated 4/19/2026

  • Lymphocyte Reference Values

    Age-grouped reference percent ranges for lymphocyte subsets (CD3, CD4, CD8, CD4/CD8 ratio, CD19).

    Immunology · Laboratory Medicine · Updated 4/19/2026

  • Lymphocytes Subset Counts

    Age-grouped absolute reference count ranges (cells/µL) for lymphocyte subsets (CD3, CD4, CD8, CD19, CD16/56).

    Immunology · Laboratory Medicine · Updated 4/19/2026

  • Serum Complement Reference Values

    Broad pediatric C3/C4 mg/dL reference bands (verify locally).

    Immunology · Laboratory Calculators · Updated 4/19/2026

  • 4C Mortality Score — COVID-19 (ISARIC)

    Hospital presentation mortality stratification (0–21) from age, sex, comorbidities, respiratory rate, SpO₂, GCS, urea, and CRP.

    Infectious Disease · Prognosis · Updated 4/19/2026

  • Antimicrobial Dosages Calculator

    Weight-based antimicrobial daily dose estimate for selected pediatric regimens.

    Infectious Disease · Pharmacology · Updated 4/19/2026

  • Breakpoint to MIC Quotient (BMQ) Score Calculator

    Computes breakpoint-to-MIC quotient for antimicrobial exposure context.

    Infectious Disease · Pharmacology · Updated 4/19/2026

  • Centor Score (Modified McIsaac) Calculator

    Strep pharyngitis pretest clinical score using Centor criteria plus age adjustment.

    Infectious Disease · Diagnosis · Updated 4/19/2026

  • CKD in HIV (eGFR & albuminuria)

    CKD-EPI eGFR plus albuminuria category and HIV medication risk toggles.

    Infectious Disease · Nephrology · Updated 4/19/2026

  • Absolute Eosinophil Count Calculator

    Computes absolute eosinophil count (AEC) from total white blood cell count and eosinophil percentage.

    Laboratory Medicine · Hematology · Updated 4/19/2026

  • Absolute Lymphocyte Count (ALC) Calculator

    Computes absolute lymphocyte count (ALC) from white blood cell count and lymphocyte percentage.

    Laboratory Medicine · Hematology · Updated 4/19/2026

  • Absolute Neutrophil Count (ANC) Calculator

    Computes absolute neutrophil count (ANC) from neutrophil %, band %, and white blood cell count.

    Laboratory Medicine · Hematology · Updated 4/19/2026

  • Absolute Reticulocyte Count & Reticulocyte Index Calculator

    Calculates absolute reticulocyte count (ARC) and corrected reticulocyte percentage from reticulocyte %, hematocrit, normal hematocrit, and RBC count.

    Laboratory Medicine · Hematology · Updated 4/19/2026

  • Blood Indices Calculator

    Calculates red blood cell indices including MCV, MCH, and MCHC.

    Laboratory Medicine · Hematology · Updated 4/19/2026

  • Calcium Correction in Hypoalbuminemia Calculator

    Corrected calcium estimate from measured total calcium and albumin.

    Laboratory Medicine · Electrolytes · Updated 4/19/2026

  • Clinical Chemistry Calculator

    Quick chemistry-derived metrics including anion gap and BUN/creatinine ratio.

    Laboratory Medicine · Biochemistry · Updated 4/19/2026

  • SI Conversion Calculator

    Common SI ↔ conventional lab conversions (glucose, creatinine, calcium, BUN, bilirubin).

    Laboratory Medicine · Conversion Calculators · Updated 4/19/2026

  • Glycogen Storage Disease — IV Rate for Target GIR

    Solves infusion rate for a target glucose infusion rate during acute glycemic management in GSD.

    Metabolic Genetics · Inborn Errors of Metabolism · Updated 4/19/2026

  • CAN Score (Fetal Malnutrition / IUGR Assessment)

    Metcoff Clinical Assessment of Nutritional status: nine body regions graded 1–4 (worse to preserved nutrition), summed to 9–36. Common threshold <24–25 for fetal malnutrition; use alongside birthweight/length for gestational age and clinical context.

    Neonatology · Growth & Development · Updated 4/19/2026

  • Glucose Infusion Rate (GIR) Calculator

    Computes mg/kg/min dextrose delivery from infusion rate, dextrose percentage, and weight.

    Neonatology · Nutrition · Updated 4/19/2026

  • Hammersmith Infant Neurological Examination (HINE) Score

    HINE optimality total (max 78) from 26 items scored 0–3: cranial nerves, posture, movements, tone, reflexes/reactions. Behaviour and milestones are not summed. Requires certified training and the official paper proforma (e.g. v 08.02.19).

    Neonatology · Neurology · Updated 4/19/2026

  • Natural Porcine Surfactant

    Educational surfactant volume approximation using birth weight (initial 2.5 mL/kg; max cumulative up to 5 mL/kg).

    Neonatology · Respiratory · Updated 4/19/2026

  • New Ballard Score Calculator

    Gestational age estimate using New Ballard neuromuscular and physical maturity scoring.

    Neonatology · Growth & Development · Updated 4/19/2026

  • Partial Exchange for Polycythemia in Neonates

    Educational formula-based partial exchange transfusion volume estimate.

    Neonatology · Hematology · Updated 4/19/2026

  • Umbilical Arterial Line Catheter Placement

    Rule-of-thumb UAC length from birth weight.

    Neonatology · Procedure Calculators · Updated 4/19/2026

  • Umbilical Vein Catheter Placement

    Shukla-style UVC insertion depth from birth weight.

    Neonatology · Procedure Calculators · Updated 4/19/2026

  • Phototherapy Nomogram

    Bhutani-like bilirubin risk-zone mapping from age in hours and TSB in mg/dL.

    Neonatology / Pediatrics · Neonatal Jaundice · Updated 4/19/2026

  • Acute Interstitial Nephritis (AIN) Checklist

    Qualitative drug-exposure and clinical feature checklist for DI-AIN suspicion.

    Nephrology · Acute Kidney Injury · Updated 4/19/2026

  • AKI Stage (KDIGO / AKIN)

    AKI severity from baseline vs current creatinine and optional UOP/RRT flags.

    Nephrology · Acute Kidney Injury · Updated 4/19/2026

  • Anion Gap

    Anion gap and albumin-corrected anion gap calculator.

    Nephrology · Electrolytes · Updated 4/19/2026

  • Bicarbonate Deficit

    Estimated total body bicarbonate deficit (mEq) from weight and serum bicarbonate.

    Nephrology · Electrolytes · Updated 4/19/2026

  • Body Fluid Balance

    Net fluid balance from total intake minus total output (mL) over an interval.

    Nephrology · Fluids · Updated 4/19/2026

  • BUN / Creatinine Ratio

    Ratio of BUN to serum creatinine (mg/dL) with contextual interpretation.

    Nephrology · Renal Function · Updated 4/19/2026

  • CKD-EPI eGFR (2021)

    Race-free estimated GFR from serum creatinine, age, and sex (adults ≥18). KDIGO G-staging.

    Nephrology · Renal Function · Updated 4/19/2026

  • Creatinine Clearance (Cockcroft–Gault)

    Estimates CrCl for drug dosing from age, weight, sex, and serum creatinine.

    Nephrology · Renal Function · Updated 4/19/2026

  • Creatinine Clearance (Measured) Calculator

    Calculates measured creatinine clearance from timed urine collection.

    Nephrology · Renal Function · Updated 4/19/2026

  • Fractional Excretion of Magnesium (FEMg)

    FEMg % using concurrent urine/serum magnesium and creatinine (mg/dL).

    Nephrology · Electrolytes · Updated 4/19/2026

  • Fractional Excretion of Magnesium (SI Units)

    FEMg % with magnesium mmol/L and creatinine umol/L.

    Nephrology · Electrolytes · Updated 4/19/2026

  • Fractional Excretion of Sodium (FENa)

    FENa (%) = (urine Na × serum Cr) / (serum Na × urine Cr) × 100 using mEq/L for sodium and mg/dL for creatinine. Helps distinguish prerenal vs intrinsic AKI; confounded by diuretics, CKD, contrast, and other settings.

    Nephrology · Acute Kidney Injury · Updated 4/19/2026

  • Fractional Excretion of Urea (FEUrea)

    FEUrea (%) = (Urine urea × Serum Cr) / (Serum urea × Urine Cr) × 100. Often used when diuretics reduce FENa reliability.

    Nephrology · Acute Kidney Injury · Updated 4/19/2026

  • Free Water Deficit (Hypernatremia)

    Estimates free water deficit: TBW × ((current Na / target Na) − 1).

    Nephrology · Electrolytes · Updated 4/19/2026

  • Henderson-Hasselbalch Equation

    Computes pH using Henderson-Hasselbalch: pH = pKa + log10(A- / HA).

    Nephrology · Acid-Base · Updated 4/19/2026

  • Kidney Failure Risk Calculator (simplified)

    Practical CKD progression risk estimate from age, eGFR, and albuminuria.

    Nephrology · CKD · Updated 4/19/2026

  • Kidney length and volume (Ped(z)-style)

    Height-based kidney length percentiles (LMS) and BSA-related single-kidney volume (BSARV × Du Bois BSA) from weight and height. Ped(z) cites Deeg & Weitzel (1997) and Scholbach & Weitzel (2012); embedded Obrycki et al. 2022 LMS (PMC9023417) and Scholbach Table 1 (PMC3820439). Not affiliated with pedz.de.

    Nephrology · Pediatric Nephrology · Updated 4/19/2026

  • Kinetic Estimated GFR (KeGFR, simplified)

    Approximate non-steady-state kidney function from serial creatinine values.

    Nephrology · Acute Kidney Injury · Updated 4/19/2026

  • Kt/V Dialysis Adequacy (simplified)

    Approximates spKt/V from pre/post dialysis BUN reduction.

    Nephrology · Dialysis · Updated 4/19/2026

  • Licurse Score (Renal Ultrasound, simplified)

    Renal ultrasound chronicity checklist (educational proxy).

    Nephrology · Imaging · Updated 4/19/2026

  • McMahon Score (Rhabdomyolysis, simplified)

    Approximate risk stratification for severe AKI/RRT in rhabdomyolysis.

    Nephrology · Acute Kidney Injury · Updated 4/19/2026

  • MDRD GFR Equation

    Historical MDRD estimated GFR equation from serum creatinine, age, and sex.

    Nephrology · Renal Function · Updated 4/19/2026

  • Normal Values of GFR

    eGFR category interpretation with simplified CKD stage thresholds.

    Nephrology · Laboratory Medicine · Updated 4/19/2026

  • Pediatric eGFR (Ped(z)-style)

    Estimated GFR (mL/min/1.73 m²) with Grubb 2014 CAPA, CKiD 2012 NKF combined and cystatin bedside, Schwartz bedside 2009, CKiD creatinine k, Filler 2003, Grubb 2005, Counahan 1976, Schwartz 1976; KDIGO 2012 G-staging. Zappitelli 2006 and Bouvet 2006 not coefficient-embedded. Not affiliated with pedz.de.

    Nephrology · Pediatric Nephrology · Updated 4/19/2026

  • Renal Factor

    CrCl-band multipliers for approximate renal dose adjustment (verify per drug).

    Nephrology · Renal Calculators · Updated 4/19/2026

  • RIFLE Criteria (AKI)

    RIFLE AKI class screening from creatinine change and urine output.

    Nephrology · Acute Kidney Injury · Updated 4/19/2026

  • Serum Osmolality / Osmolarity

    Calculated serum osmolarity from sodium, glucose, BUN, and optional ethanol.

    Nephrology · Electrolytes · Updated 4/19/2026

  • SI Units Creatinine Clearance (Cockcroft-Gault) Calculator

    Cockcroft-Gault estimate using serum creatinine in umol/L.

    Nephrology · Renal Function · Updated 4/19/2026

  • Sodium Correction Rate

    Computes sodium change rate per 24 hours for safety monitoring.

    Nephrology · Electrolytes · Updated 4/19/2026

  • Sodium Deficit (Hyponatremia)

    Estimated sodium deficit using TBW and target sodium.

    Nephrology · Electrolytes · Updated 4/19/2026

  • Transtubular Potassium Gradient (TTKG)

    Calculates TTKG from urine/serum potassium and osmolality.

    Nephrology · Electrolytes · Updated 4/19/2026

  • Urinary Protein Excretion Estimation

    Approximates daily protein excretion from UPCR and body surface area.

    Nephrology · Renal Function · Updated 4/19/2026

  • Urine Anion Gap

    Calculates UAG = urine Na + urine K − urine Cl.

    Nephrology · Electrolytes · Updated 4/19/2026

  • Urine Output and Fluid Balance

    Urine output rate (mL/kg/hr) and I/O balance over a window.

    Nephrology · Renal Calculators · Updated 4/19/2026

  • Total Body Water Calculator

    TBW from age, height, weight — pediatric fractions vs Watson adult.

    Nephrology / Apheresis · Fluid Calculators · Updated 4/19/2026

  • Sodium Correction for Hyperglycemia

    Katz and Hillier corrected sodium for hyperglycemia.

    Nephrology / Emergency · Renal Calculators · Updated 4/19/2026

  • 2HELPS2B Score (EEG Seizure Risk)

    EEG feature checklist (0–7) for seizure risk stratification on continuous monitoring in critically ill patients.

    Neurology · Critical Care · Updated 4/19/2026

  • ABC/2 — Intracerebral Hemorrhage Volume

    Ellipsoid CT estimate: A×B×C/2 in cm → mL for ICH volume tracking.

    Neurology · Neurocritical Care · Updated 4/19/2026

  • ABCD² Score — TIA Early Stroke Risk

    Age, BP, clinical features, symptom duration, diabetes — 0–7 with early stroke risk framing.

    Neurology · Stroke · Updated 4/19/2026

  • Cerebral Perfusion Pressure Calculator

    Computes CPP from mean arterial pressure and intracranial pressure.

    Neurology · Critical Care · Updated 4/19/2026

  • Phenytoin Correction (Albumin/Renal Failure)

    Sheiner-Tozer corrected total phenytoin concentration estimate.

    Neurology · Pharmacology · Updated 4/19/2026

  • Rule of 7s for Lyme Meningitis

    Garro pediatric clinical prediction: headache ≥7d, CSF mononuclear ≥70%, CN palsy.

    Neurology / Infectious Diseases · Infectious Calculators · Updated 4/19/2026

  • IV Flow Rates Calculator

    mL/hour and drops/min from volume, duration, and drop factor.

    Nursing · Pharmacology · Updated 4/19/2026

  • Basal Metabolic Rate (BMR) Calculator

    Estimates basal metabolic rate using common predictive equations.

    Nutrition · Metabolism · Updated 4/19/2026

  • Biological Values of Various Food Items Calculator

    Educational biological value lookup for common food proteins.

    Nutrition · Dietary Assessment · Updated 4/19/2026

  • Dietary Reference Intakes Calculator

    Age- and sex-based dietary reference intake estimates for selected nutrients.

    Nutrition · Dietary Assessment · Updated 4/19/2026

  • Nutritional Values of Various Fruits

    Educational fruit nutrition macros per 100g for selected fruits.

    Nutrition · Nutrition · Updated 4/19/2026

  • Recommended Daily Allowance of Various Vitamins and Minerals

    Approximate IOM-style RDA/AI targets by age/sex for selected micronutrients.

    Nutrition · Nutrition Calculators · Updated 4/19/2026

  • Resting energy expenditure (REE)

    Schofield weight-based BMR estimate (kcal/day) by age band.

    Nutrition · Nutrition Calculators · Updated 4/19/2026

  • Protein requirements in various age groups

    Protein requirement estimate by age band (g/kg/day approximation).

    Nutrition / Pediatrics · Nutrition · Updated 4/19/2026

  • Bishop Score Vaginal Delivery / Induction Calculator

    Bishop score to assess cervical favorability for induction.

    Obstetrics · Labor & Delivery · Updated 4/19/2026

  • Conception Date Calculator

    Estimates conception date from expected due date using standard gestational timing.

    Obstetrics · Pregnancy · Updated 4/19/2026

  • Fetal echo z-scores (Ped(z)-style)

    Fetal cardiac z-scores (valves, LVEDD/RVEDD, circumference) vs menstrual age or BPD/femur length. Ped(z) cites Lee 2010; embedded Schneider 2005 ln-ln, Traisrisilp 2011 CC, Kim 2016 biometry cross-check. Not affiliated with pedz.de.

    Obstetrics · Maternal Fetal Medicine · Updated 4/19/2026

  • Vaginal Birth After Cesarean (MFMU)

    Race-free logistic success estimate (Grobman / MFMU network update) from age, height, pre-pregnancy weight, prior delivery history, arrest indication, and treated hypertension.

    Obstetrics · Pregnancy Calculators · Updated 4/19/2026

  • VBAC Risk Score for Successful Vaginal Delivery (Flamm Model)

    Admission score predicting trial of labor after cesarean success (historical cohorts).

    Obstetrics · Pregnancy Calculators · Updated 4/19/2026

  • Maternal-Fetal Hemorrhage Rh(D) Immune Globulin Dosage

    Rh(D) immune globulin dosage estimation using maternal blood volume and fetal cells percentage (Kleihauer-Betke equivalent inputs).

    Obstetrics / Hematology · Obstetrics · Updated 4/19/2026

  • Pregnancy Due Date

    Estimated due date (EDD) using Naegele’s rule: EDD = LMP + 280 days.

    Obstetrics / Pediatrics · Pregnancy · Updated 4/19/2026

  • Gestational age (EDD vs LMP)

    Completed gestational age as of a reference date from EDD by Naegele (LMP + 280 days) and/or clinical EDD. Shows dating discrepancy and GA difference. Inspired by Ped(z) gestational age; not affiliated with pedz.de.

    Obstetrics & Gynecology · Pregnancy · Updated 4/19/2026

  • Cisplatin-associated AKI Risk (heuristic)

    Heuristic risk flags for cisplatin nephrotoxicity prevention.

    Oncology · Nephrology · Updated 4/19/2026

  • Immune-related Renal Toxicities / Nephritis (simplified)

    Simplified creatinine-rise grading aid for suspected immune checkpoint inhibitor nephritis.

    Oncology · Nephrology · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Acute lymphoblastic leukaemia

    Pediatric ALL risk flag checklist (educational).

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Acute myeloid leukaemia

    Pediatric AML simplified adverse vs favorable feature triage.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Ependymoma

    EOR and neuraxis dissemination triage.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Ewing sarcoma

    Localized vs regional vs metastatic Ewing family tumor.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Hepatoblastoma

    PRETEXT-oriented hepatoblastoma patterning.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Hodgkin lymphoma

    Ann Arbor-style extent checklist (simplified).

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Medulloblastoma and other CNS embryonal tumours

    Localized vs metastatic vs molecular subgroup flags.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Neuroblastoma

    INRG L1/L2/M/MS pattern triage.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Non-Hodgkin lymphoma

    St Jude Murphy stage analogue.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Non-rhabdomyosarcoma soft tissue sarcoma

    NRSTS local risk vs metastatic grouping.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Osteosarcoma

    Localized vs nodal vs metastatic osteosarcoma.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Ovarian cancer

    Pediatric ovarian extent FIGO-style simplification.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Retinoblastoma

    Intraocular vs high-risk path vs extraocular patterning.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Rhabdomyosarcoma

    IRS clinical group style RMS buckets.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Testicular cancer

    Pediatric germ cell local vs nodal vs metastatic.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Toronto Childhood Cancer Staging criteria for Wilms tumour

    Wilms SIOP/COG-oriented simplified buckets.

    Oncology · Oncology Calculators · Updated 4/19/2026

  • Lansky Play-Performance Scale for Pediatric Functional Status

    Lansky Play-Performance Scale mapping for functional status on a 0–100 scale.

    Oncology / Pediatrics · Functional Status · Updated 4/19/2026

  • Kocher Criteria for Septic Arthritis

    Kocher criteria checklist (0–4) using non-weight-bearing, fever, ESR, and WBC thresholds.

    Orthopedics / Pediatrics · Infectious Diseases · Updated 4/19/2026

  • Pirani Score Calculator (CTEV / Clubfoot)

    Six-item clinical severity score for congenital talipes equinovarus: hindfoot contracture (posterior crease, empty heel, rigid equinus) and midfoot contracture (lateral border curvature, medial crease, lateral talar head), each graded 0, 0.5, or 1. Total 0–6.

    Orthopedics / Pediatrics · Musculoskeletal · Updated 4/19/2026

  • Childhood Hodgkin International Prognostic Score (CHIPS)

    Counts adverse prognostic factors used in pediatric Hodgkin lymphoma risk stratification.

    Pediatric Oncology · Oncology · Updated 4/19/2026

  • PRETEXT annotation factor P

    PRETEXT factor P (portal vein involvement): portal obliteration/encasement or intravascular portal thrombus.

    Pediatric Oncology · Hepatoblastoma · Updated 4/19/2026

  • PRETEXT annotation factor V

    PRETEXT factor V (hepatic vein/IVC involvement): hepatic vein/IVC obliteration/encasement or intravascular hepatic vein thrombus.

    Pediatric Oncology · Hepatoblastoma · Updated 4/19/2026

  • PRETEXT annotation factors E, F, R, C, N and M

    PRETEXT annotation factors checklist: extrahepatic spread, multifocality, rupture, caudate involvement, lymph nodes, and distant metastases.

    Pediatric Oncology · Hepatoblastoma · Updated 4/19/2026

  • Pretext for Hepatoblastoma

    PRETEXT staging (simplified heuristic) using V/P/E/R/F and M+ plus age and AFP bands.

    Pediatric Oncology · Hepatoblastoma · Updated 4/19/2026

  • AAP 2022 Neonatal Hyperbilirubinemia — TSB Phototherapy & Exchange Thresholds

    Hour-specific total serum bilirubin thresholds (mg/dL) for phototherapy (Fig 2–3) and exchange transfusion (Fig 5–6) in infants ≥35 weeks gestation, with neurotoxicity risk-factor pathway, escalation (exchange −2 mg/dL), and B/A ratio checks per AAP 2022 CPG.

    Pediatrics · Neonatology · Updated 4/19/2026

  • AAP 2022 Neonatal Hyperbilirubinemia Follow-up Calculator

    Implements AAP 2022 discharge follow-up bands from bilirubin distance to phototherapy threshold (Fig 7), plus KAS 6 (TcB to TSB trigger) and KAS 7 rapid rise thresholds.

    Pediatrics · Neonatology · Updated 4/19/2026

  • AAP Pediatric Hypertension Guidelines

    2017 AAP guideline. Classifies BP as Normal, Elevated, Stage 1, or Stage 2 HTN. Children 1–12 y: percentile-based by age, sex, height; adolescents ≥13 y: adult cutoffs (120/80, 130/80, 140/90). Diagnosis requires 3 visits.

    Pediatrics · Cardiovascular · Updated 4/19/2026

  • APGAR Score Calculator

    Evaluate newborn condition at 1 and 5 minutes after birth using the standardized APGAR scoring system.

    Pediatrics · Neonatology · Updated 4/19/2026

  • Asthma Predictive Index (API) Calculator

    API framework using recurrent wheeze plus major/minor risk criteria.

    Pediatrics · Respiratory · Updated 4/19/2026

  • Bacterial Meningitis Score for Children Calculator

    Risk stratification checklist for bacterial meningitis in children with CSF pleocytosis.

    Pediatrics · Infectious Disease · Updated 4/19/2026

  • Behavioral Observational Pain Scale (BOPS) Calculator

    Post-operative pediatric observational pain score.

    Pediatrics · Pain Management · Updated 4/19/2026

  • Bhutani Nomogram for Neonatal Jaundice

    Plot total serum bilirubin against age in hours to assess risk of hyperbilirubinemia in newborns.

    Pediatrics · Neonatology · Updated 4/19/2026

  • Blood pressure percentiles (Ped(z)-style)

    BP percentiles by sex, DOB, reference date, height: daytime SBP/DBP plus nighttime at 90% daytime (Ped(z)-style). Embedded Fourth Report–style grid; KiGGS not reproduced. Not affiliated with pedz.de.

    Pediatrics · Cardiovascular · Updated 4/19/2026

  • Body percentiles (CDC — Ped(z)-style)

    Same clinical role as pedz.de body percentiles: sex, dates, anthropometry, z-scores and percentiles for BMI, height/length, weight, weight-for-length, head — YMed uses CDC 2000 LMS only; KiGGS, Kromeyer-Hauschild, WHO-only, Down, and other Ped(z) references are not embedded.

    Pediatrics · Growth & Development · Updated 4/19/2026

  • Body Surface Area (BSA) Calculator

    Calculate body surface area for pediatric patients, essential for drug dosing, GFR calculation, and fluid management.

    Pediatrics · General · Updated 4/19/2026

  • Bone Age Calculator (Greulich–Pyle)

    Estimate skeletal maturity from hand and wrist radiographs using Greulich–Pyle standards: match the X-ray to atlas images, enter chronological age, and review bone age versus chronological age with SD-based interpretation.

    Pediatrics · Growth & Development · Updated 4/19/2026

  • Brief Resolved Unexplained Events (BRUE) Criteria Calculator

    AAP low-risk BRUE criteria checklist for infants.

    Pediatrics · Emergency · Updated 4/19/2026

  • Cardiac echo z-scores (Ped(z)-style, M-mode)

    Haycock BSA; Pettersen-style MV/AoV annulus z-scores; FS% from LVEDD/LVESD. Ped(z) lists many additional references (Kampmann, Koestenberger, etc.)—not all embedded. Not affiliated with pedz.de.

    Pediatrics · Cardiovascular · Updated 4/19/2026

  • CATCH Rule Calculator

    Canadian Assessment of Tomography for Childhood Head Injury decision support.

    Pediatrics · Emergency · Updated 4/19/2026

  • Cerebrospinal Fluid (CSF) Score Calculator

    CSF risk index from glucose, protein, and WBC pattern.

    Pediatrics · Infectious Disease · Updated 4/19/2026

  • CHEOPS Post-op Pediatric Pain Calculator

    Children's Hospital of Eastern Ontario Pain Scale behavioral scoring tool.

    Pediatrics · Pain Management · Updated 4/19/2026

  • CKiD U25 eGFR (Schwartz-type)

    Pediatric/young adult eGFR from height and creatinine (Schwartz CKiD k constants). Ages ≤25.

    Pediatrics · Nephrology · Updated 4/19/2026

  • Corrected CSF WBC / RBC Count Calculator

    Estimates CSF WBC corrected for RBC contamination in traumatic tap.

    Pediatrics · Laboratory Medicine · Updated 4/19/2026

  • CSF Protein Concentration Correction Calculator

    Adjusts CSF protein estimate for traumatic blood contamination.

    Pediatrics · Laboratory Medicine · Updated 4/19/2026

  • Emergency Drug Formula Calculator (Pediatric)

    Weight-based resuscitation drug dose estimates for selected ACLS/PALS scenarios.

    Pediatrics · Emergency Medicine · Updated 4/19/2026

  • Endotracheal Tube Depth & Tidal Volume Calculator

    Oral insertion depth estimate and 6–8 mL/kg tidal volume band.

    Pediatrics · Airway · Updated 4/19/2026

  • Endotracheal Tube Size Calculator (Pediatric)

    Estimated cuffed/uncuffed internal diameter from age.

    Pediatrics · Airway · Updated 4/19/2026

  • FLACC Pain Scale Calculator

    Face, legs, activity, cry, consolability (0–10) pediatric pain score.

    Pediatrics · Pain Management · Updated 4/19/2026

  • Growth Percentile Calculator (WHO/CDC)

    Calculate and plot pediatric growth parameters including height, weight, BMI, and head circumference on WHO and CDC growth charts.

    Pediatrics · Growth & Development · Updated 4/19/2026

  • Head Circumference

    Simplified head circumference percentile estimate by age (months/years), sex, and measured head circumference (educational).

    Pediatrics · Growth & Development · Updated 4/19/2026

  • Height

    Simplified predicted adult height estimate from age and current height (educational).

    Pediatrics · Growth & Development · Updated 4/19/2026

  • Henoch Schnolein Purpura (HSP) – Diagnostic criteria

    Checklist-based educational evaluation: at least 2 of 4 criteria (palpable purpura, age ≤20 at onset, bowel angina, biopsy granulocytes).

    Pediatrics · Rheumatology · Updated 4/19/2026

  • Human milk composition in various post partum period

    Simplified educational interpolation of selected milk nutrients by postpartum age (months).

    Pediatrics · Nutrition · Updated 4/19/2026

  • Hyperbilirubinemia risk (hour-specific)

    TSB risk zones from DOB, current date (age in hours), bilirubin (mg/dL or µmol/L), optional Coombs+ surrogate, GA for context. Simplified Bhutani-like curve—not AWMF 024/007. Inspired by Ped(z) bili; not affiliated with pedz.de.

    Pediatrics · Neonatology · Updated 4/19/2026

  • Hyperbilirubinemia Risk Nomogram

    Hour-specific bilirubin risk zone for newborns using simplified threshold interpolation (educational).

    Pediatrics · Neonatology · Updated 4/19/2026

  • INTERGROWTH-21st Birthweight Centile Calculator

    Birthweight centile (3rd–97th) for sex-specific gestational age from 33+0 to 42+6 weeks using INTERGROWTH-21st International Newborn Size Standards. Classifies SGA (<10th), AGA, and LGA (>90th) with clinical notes.

    Pediatrics · Neonatology · Updated 4/19/2026

  • Kawasaki Disease Diagnostic Criteria

    Kawasaki disease diagnostic criteria (major: fever >=5 days; minor: at least 4 of 7 listed features).

    Pediatrics · Cardiology · Updated 4/19/2026

  • Neonatal birth percentiles (UK-WHO preterm)

    Birth weight, length, and head circumference centiles and z-scores for completed gestational age 23+0 to 42+6 weeks, by sex. Uses UK-WHO preterm British 1990 LMS (RCPCH growth-references, MIT). Same clinical role as pedz.de neonatal birth percentiles; not Fenton/Voigt.

    Pediatrics · Neonatology · Updated 4/19/2026

  • NICE CG98 Neonatal Jaundice — TSB Phototherapy & Exchange Cutoffs

    Phototherapy and exchange transfusion TSB thresholds (mg/dL) by gestational age (23–≥38 wks) and postnatal age band, based on NICE Clinical Guideline 98 treatment threshold graphs.

    Pediatrics · Neonatology · Updated 4/19/2026

  • Normal Respiratory Rate

    Typical educational respiratory rate reference ranges by age group.

    Pediatrics · Vital Signs · Updated 4/19/2026

  • Normal values of Albumin

    Educational simplified albumin reference range (3.5–5.0 g/dL).

    Pediatrics · Laboratory Medicine · Updated 4/19/2026

  • Normal values of ALP

    Educational simplified ALP reference ranges by age band.

    Pediatrics · Laboratory Medicine · Updated 4/19/2026

  • Normal values of Alpha Fetoprotein

    Educational simplified AFP reference ranges by age band.

    Pediatrics · Laboratory Medicine · Updated 4/19/2026

  • Normal Values of Lactate Dehydrogenase

    Educational simplified LDH reference range.

    Pediatrics · Laboratory Medicine · Updated 4/19/2026

  • Novel Pneumonia Risk Score (PRS)

    Predicts risk of radiographic pneumonia in children 3 months to 18 years. Variables: age, triage SpO2, fever, rales, wheeze. AUC ~0.69-0.71.

    Pediatrics · Respiratory · Updated 4/19/2026

  • PECARN Pediatric Head Injury / Trauma Algorithm

    Clinical decision rule to identify children at very low risk of clinically important TBI (ci-TBI) after blunt head trauma. Age-specific criteria for <2 years and ≥2 years. Guides CT imaging; not a substitute for clinical judgment.

    Pediatrics · Diagnosis · Updated 4/19/2026

  • Pediatric Appendicitis Risk Calculator (pARC)

    Quantifies risk of appendicitis on a continuous scale for children 5–18 years presenting with acute abdominal pain. Validated AUC 0.85 (95% CI 0.83–0.87).

    Pediatrics · Diagnosis · Updated 4/19/2026

  • Pediatric Appendicitis Score (PAS)

    Clinical score (0–10) for appendicitis evaluation in children. Eight criteria: migration of pain to RLQ, neutrophilia >75%, leukocytosis >10k, nausea/vomiting, fever >38°C, anorexia, RLQ tenderness on palpation (2), RLQ pain with cough/percussion/hopping (2). Use with clinical judgment and imaging when indicated.

    Pediatrics · Diagnosis · Updated 4/19/2026

  • Pediatric Asthma Score (PAS)

    Assess asthma exacerbation severity in children 2+ years. Five components, 1-3 points each; total 5-15. 5-7 mild, 8-11 moderate, 12-15 severe.

    Pediatrics · Respiratory · Updated 4/19/2026

  • Pediatric BMI-for-Age Percentile Calculator

    Calculate and interpret BMI percentiles specifically for children and adolescents aged 2-20 years.

    Pediatrics · Growth & Development · Updated 4/19/2026

  • Pediatric BP Centile Chart

    Calculate and visualize blood pressure percentiles for children and adolescents (ages 1-16) based on age, gender, height, and BP readings.

    Pediatrics · Cardiovascular · Updated 4/19/2026

  • Pediatric Drug Dose Calculator

    Calculate weight- or BSA-based medication dosing for pediatric patients with safety checks and common drug-specific calculations.

    Pediatrics · Pharmacology · Updated 4/19/2026

  • Pediatric Early Warning Score (PEWS)

    Early recognition of deteriorating pediatric patients. Scores behavior (level of consciousness), cardiovascular (skin/CRT), and respiratory (rate/effort/O₂) parameters. Total 0–9 with escalation guidance. Staff/carer concern overrides score.

    Pediatrics · Critical Care · Updated 4/19/2026

  • Pediatric Fluid Requirement Calculator

    Calculate maintenance fluid requirements and deficit replacement for pediatric patients using Holliday-Segar method.

    Pediatrics · Critical Care · Updated 4/19/2026

  • Pediatric GFR Calculator (Schwartz Formula)

    Calculate estimated Glomerular Filtration Rate (eGFR) in pediatric patients using the updated Schwartz formula.

    Pediatrics · Nephrology · Updated 4/19/2026

  • Pediatric Glasgow Coma Scale

    Assess neurological status in pediatric patients using age-appropriate Glasgow Coma Scale criteria.

    Pediatrics · Neurology · Updated 4/19/2026

  • Pediatric Ins and Outs (IV Fluids)

    Calculates fluid status in volume per weight and volume per weight per time. Enter weight, intake, output (mL), and period (hours) for net balance, mL/kg, and mL/kg/hr; compare to maintenance.

    Pediatrics · Critical Care · Updated 4/19/2026

  • Pediatric NIH Stroke Scale (NIHSS)

    Pediatric adaptation of NIHSS: same 15 items, 0-42 total. Age-appropriate instructions. Do not delay emergent care for scoring.

    Pediatrics · Neurology · Updated 4/19/2026

  • Pediatric SIRS, Sepsis, and Septic Shock Criteria

    Applies international pediatric consensus criteria for SIRS (≥2 criteria with abnormal temperature or leukocyte count), sepsis, severe sepsis, and septic shock based on infection and organ dysfunction.

    Pediatrics · Critical Care · Updated 4/19/2026

  • Pediatric Trauma Score (PTS)

    Rapid triage of injured children. Six components, each -1 to +2; total -6 to +12. 9-12 minor, 6-8 potentially life-threatening, 0-5 life-threatening, less than 0 usually fatal.

    Pediatrics · Critical Care · Updated 4/19/2026

  • Ponderal Index Calculator

    Ponderal (Rohrer) index as weight divided by cubed stature: PI (kg/m³). Reports neonatal convention 100 × birth weight (g) ÷ crown-heel length (cm)³ for proportionality screening with clinical context.

    Pediatrics · Growth & Development · Updated 4/19/2026

  • Prevention and Incidence of Asthma and Mite Allergy (PIAMA) Risk Score

    PIAMA preschool risk score risk-band stratification for later asthma.

    Pediatrics · Respiratory · Updated 4/19/2026

  • Revised Schwartz Equation (GFR, 2009)

    Pediatric eGFR using 0.413 × height(cm) / serum creatinine(mg/dL).

    Pediatrics · Nephrology · Updated 4/19/2026

  • Syringe pump (perfusor dose / rate / mass)

    Syringe pump: mg in volume, rate mL/h, weight kg → delivery; or solve rate or drug mass for a target dose (mg/kg/h or mg/h). Inspired by Ped(z) perfusor; not affiliated with pedz.de.

    Pediatrics · Pharmacology · Updated 4/19/2026

  • Vesicoureteral Reflux Index (VURx, simplified)

    Simplified risk checklist for vesicoureteral reflux progression/recurrence.

    Pediatrics · Urology · Updated 4/19/2026

  • Predict Height

    Same calculator as Pediatric target height (mid-parental): parental heights and child sex for expected adult stature and an approximate range.

    Pediatrics / Endocrinology · Growth & Development · Updated 4/19/2026

  • Steroid Conversion Calculator

    Glucocorticoid dose conversion using classic equivalence table.

    Pharmacology · Drug Calculators · Updated 4/19/2026

  • Therapeutic Drug Levels

    Quick reference targets for common TDM drugs.

    Pharmacology · Drug Calculators · Updated 4/19/2026

  • AIMS — Abnormal Involuntary Movement Scale (summed)

    Seven items 0–4 each (simplified documentation aid for tardive/drug-induced movement monitoring).

    Psychiatry · Neurology · Updated 4/19/2026

  • DSM-5 Anorexia Nervosa Disorder Checklist

    DSM-5 criteria A-C checklist support with optional BMI severity grouping.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Attention Deficit Hyperactivity Disorder Checklist

    DSM-5 ADHD symptom-domain and contextual criteria support (inattention/hyperactivity counts plus impairment checks).

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Avoidant/Restrictive Food Intake Disorder (ARFID) Checklist

    DSM-5 ARFID criteria checklist (A-D) with required exclusion checks.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Binge Eating Disorder Checklist

    DSM-5 binge eating disorder criteria support checklist.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Body Dysmorphic Disorder Checklist

    DSM-5 body dysmorphic disorder criteria support checklist.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Bulimia Nervosa Disorder Checklist

    DSM-5 bulimia nervosa criteria support checklist.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Conduct Disorder Checklist

    DSM-5 criteria checklist support for conduct disorder symptom domains.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Disruptive Mood Dysregulation Disorder Checklist

    DSM-5 checklist support for disruptive mood dysregulation disorder criteria.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Dysthymic Disorder (Persistent Depressive Disorder) Checklist

    DSM-5 checklist support for persistent depressive disorder criteria.

    Psychiatry · Mental Health · Updated 4/19/2026

  • DSM-5 Generalized Anxiety Disorder Checklist

    DSM-5 GAD symptom and context checklist including associated symptom count.

    Psychiatry · Mental Health · Updated 4/19/2026

  • Major Depressive Episode/Disorder - DSM-5 Criteria

    DSM-5 major depressive episode/disorder checklist: >=5 symptoms (A criteria) with required additional exclusions (simplified educational logic).

    Psychiatry · Mental Health · Updated 4/19/2026

  • Manic Episode Criteria - DSM-5 Criteria

    DSM-5 manic episode checklist: >=1 week plus 3 symptoms (4 if mood only irritable) and required exclusions (simplified educational logic).

    Psychiatry · Mental Health · Updated 4/19/2026

  • Oppositional Defiant Disorder

    DSM-5 simplified ODD checklist based on symptom counts and required exclusions.

    Psychiatry · Mental Health · Updated 4/19/2026

  • Panic Disorder and Agoraphobia Criteria - DSM-5 Criteria

    DSM-5 simplified panic disorder/agoraphobia checklist based on symptom counts, persistence, and required exclusions.

    Psychiatry · Mental Health · Updated 4/19/2026

  • PHQ-9 Depression Questionnaire

    Nine-item Patient Health Questionnaire depression scale for symptom screening and severity stratification (score 0–27).

    Psychiatry · Mental Health · Updated 4/19/2026

  • Post-traumatic Stress Disorder Comparison Children 6 Years and Younger - DSM-5 Criteria

    DSM-5 PTSD symptom checklist for children <=6 years (A: exposure, B: intrusion >=1, C: avoidance/negative alterations >=1, D: arousal >=2).

    Psychiatry · Mental Health · Updated 4/19/2026

  • Separation Anxiety Disorder - DSM-5 Criteria

    Simplified DSM-5 separation anxiety checklist.

    Psychiatry · Psychosocial Calculators · Updated 4/19/2026

  • Social Phobia/Social Anxiety Disorder - DSM-5 Criteria

    Simplified DSM-5 social anxiety disorder checklist.

    Psychiatry · Psychosocial Calculators · Updated 4/19/2026

  • Social (Pragmatic) Communication Disorder (SCD) - DSM-5 Criteria

    Simplified DSM-5 SCD pragmatic communication checklist.

    Psychiatry / Neurodevelopment · Psychosocial Calculators · Updated 4/19/2026

  • ABG Analyzer (simplified)

    pH, PaCO₂, HCO₃⁻; Winter formula; optional anion gap.

    Pulmonology · Critical Care · Updated 4/19/2026

  • Alveolar-Arterial Gradient (A-a Gradient) Calculator

    Calculates alveolar oxygen tension and A-a gradient from atmospheric pressure, FiO2, PaCO2, and PaO2, with age-adjusted expected gradient.

    Pulmonology · Respiratory · Updated 4/19/2026

  • Apnea-Hypopnea Index (AHI) Calculator

    Calculates AHI from apnea-hypopnea events and total sleep hours with adult/pediatric severity bands.

    Pulmonology · Sleep Medicine · Updated 4/19/2026

  • FEV1 Predicted (Adult, Simplified)

    Rough reference FEV1 from age and height; use GLI reference equations for lung function reporting.

    Pulmonology · Pulmonary Function · Updated 4/19/2026

  • Interpretation algorithm for spirometry

    Simplified spirometry interpretation using FEV1/FVC ratio and bronchodilator response (and optional FVC% predicted for restrictive pattern).

    Pulmonology · Pulmonary Function · Updated 4/19/2026

  • Modified Asthma Predictive Index (mAPI)

    Modified Asthma Predictive Index: requires recurrent wheeze (>=4/year) plus >=1 major or >=2 minor criteria.

    Pulmonology · Respiratory · Updated 4/19/2026

  • Pediatric Asthma Severity Score (PASS) for Asthma Exacerbation Severity

    PASS: wheezing + work of breathing + expiration prolongation (0–6).

    Pulmonology · Respiratory · Updated 4/19/2026

  • Respiratory Disturbance Index (RDI)

    RDI = (apneas + hypopneas + RERAs) / sleep hours.

    Pulmonology · Polysomnography Calculators · Updated 4/19/2026

  • Risk Score for Asthma Exacerbation (RSE)

    Bateman-type exacerbations risk score from BMI, ACQ-5, FEV1, reliever use, and high-step therapy.

    Pulmonology · Respiratory Calculators · Updated 4/19/2026

  • Scoring System For LRTI

    Kendig-inspired pediatric LRTI CXR + clinical tier score (educational).

    Pulmonology · Respiratory Calculators · Updated 4/19/2026

  • Six-Minute Walk Distance — % Predicted (Enright)

    Predicted 6MWD from height, weight, age, and sex using Enright reference equations; reports % predicted from observed distance.

    Pulmonology · Pulmonary Function · Updated 4/19/2026

  • Spirometry z-scores (Ped(z)-style, GLI-2012)

    GLI-2012 z-scores and % predicted for FEV1, FVC, FEV1/FVC from sex, height, DOB, reference date, ethnicity. Vendored Automate-Medical gli2012 (FEF/FEV0.75 not in bundle). Not affiliated with pedz.de.

    Pulmonology · Pulmonary Function · Updated 4/19/2026

  • STOP-BANG Obstructive Sleep Apnea Screen

    Eight-item STOP-BANG questionnaire to estimate risk of obstructive sleep apnea in adults.

    Pulmonology · Sleep Medicine · Updated 4/19/2026

  • Pediatric PRAM for Asthma Exacerbation Severity

    PRAM score (0–12): oxygen saturation, retractions, air entry, and wheezing for acute pediatric asthma severity.

    Pulmonology / Pediatrics · Respiratory · Updated 4/19/2026

  • Predicted Mean Peak Respiratory Flow Rates

    Approximate predicted peak respiratory flow rates from height, age, sex; optional comparison to actual peak flow.

    Pulmonology / Pediatrics · Pulmonary Function · Updated 4/19/2026

  • Predicting PEFR/FVC/FEF50/FEF75

    Approximate predicted spirometry values (PEFR, FVC, FEF50, FEF75) from height, age (months), and sex.

    Pulmonology / Pediatrics · Pulmonary Function · Updated 4/19/2026

  • USG Measurements of the Normal Spleen Length

    Typical splenic longitudinal length by age on ultrasound.

    Radiology · Imaging Calculators · Updated 4/19/2026

  • Efficacy Ratio Calculator

    Compares event rates between treatment and control (rate ratio, ARR, NNT).

    Research Methods · Statistics · Updated 4/19/2026

  • 2010 ACR/EULAR Classification Criteria — Rheumatoid Arthritis

    Joint involvement, serology, acute-phase reactants, and symptom duration scoring; ≥6 supports definite RA classification.

    Rheumatology · Classification · Updated 4/19/2026

  • 2012 ACR/EULAR Classification Criteria — Polymyalgia Rheumatica

    Mandatory age, shoulder presentation, and laboratory features; clinical points without ultrasound or ultrasound-positive pathway.

    Rheumatology · Classification · Updated 4/19/2026

  • ACR-EULAR Gout Classification Criteria Calculator

    Applies the 2015 ACR-EULAR gout classification framework with sufficient criterion and weighted domains.

    Rheumatology · Diagnosis · Updated 4/19/2026

  • Ankylosing Spondylitis Disease Activity Calculator

    BASDAI-style ankylosing spondylitis disease activity estimate from 6 patient-reported 0-10 domains.

    Rheumatology · Disease Activity · Updated 4/19/2026

  • BAS-G Calculator

    Bath Ankylosing Spondylitis Global score from patient global assessments.

    Rheumatology · Disease Activity · Updated 4/19/2026

  • Behcet Syndrome International Study Criteria Calculator

    ICBD points-based classification support for Behcet syndrome.

    Rheumatology · Diagnosis · Updated 4/19/2026

  • EGPA (Churg-Strauss) Feature Checklist

    Clinical-laboratory feature count for eosinophilic granulomatosis with polyangiitis education.

    Rheumatology · Vasculitis · Updated 4/19/2026

  • EULAR/ACR SLE Classification (2019) Points Entry

    ANA entry plus total weighted classification points (official table) for systemic lupus erythematosus.

    Rheumatology · Autoimmune · Updated 4/19/2026

  • Fibromyalgia Diagnostic Calculator (2016 ACR numeric screen)

    WPI and SSS threshold check; duration and exclusions still required clinically.

    Rheumatology · Pain · Updated 4/19/2026

  • Giant Cell Arteritis (ACR 1990) Calculator

    American College of Rheumatology classification criteria for giant cell (temporal) arteritis.

    Rheumatology · Vasculitis · Updated 4/19/2026

  • Granulomatosis With Polyangiitis (ACR 1990)

    Classification criteria for GPA (historically Wegener granulomatosis).

    Rheumatology · Vasculitis · Updated 4/19/2026

  • Polyarteritis Nodosa

    ACR 1990 classification criteria checklist: count of criteria met (>=3 supports classification).

    Rheumatology · Vasculitis · Updated 4/19/2026

  • Scleroderma

    Systemic sclerosis feature screen toward classification workup.

    Rheumatology · Rheumatology Calculators · Updated 4/19/2026

  • Sjogren Syndrome

    Sjögren workup screen toward ACR/EULAR 2016 classification.

    Rheumatology · Rheumatology Calculators · Updated 4/19/2026

  • Systemic Lupus Erythematosus Disease Activity Index (SLEDAI)

    SLEDAI-2K-style weighted lupus activity sum (0–105).

    Rheumatology · Rheumatology Calculators · Updated 4/19/2026

  • 2018 Leibovich Model — Renal Cell Carcinoma (RCC)

    Post-nephrectomy prognostic score for non-metastatic RCC: pathologic T/N stage, tumor size (cm), ISUP/Fuhrman nuclear grade, and histologic necrosis. Risk groups: low 0–2, intermediate 3–5, high ≥6 points. Reports estimated metastasis-free and cancer-specific survival at 1–10 years.

    Urology · Oncology · Updated 4/19/2026

  • ASSURE RCC Prognosis (simplified)

    Post-nephrectomy RCC adverse-feature index (educational; not full nomogram).

    Urology · Oncology · Updated 4/19/2026

  • Fuhrman Nuclear Grade (ccRCC)

    Historical grading aid for clear-cell RCC pathology (grade 1-4).

    Urology · Oncology · Updated 4/19/2026

  • IMDC Risk Model (metastatic RCC)

    Counts 6 adverse prognostic factors to classify favorable/intermediate/poor metastatic RCC risk.

    Urology · Oncology · Updated 4/19/2026

  • Management of Small Renal Masses (decision aid)

    Guideline-style checklist for cT1a small renal mass management pathways.

    Urology · Oncology · Updated 4/19/2026

  • Mekhail Extension of Motzer Score

    Metastatic RCC prognosis by adverse risk factors count.

    Urology · Oncology · Updated 4/19/2026

  • MSKCC Risk of Recurrence (RCC, simplified)

    Post-nephrectomy RCC recurrence feature checklist (educational proxy).

    Urology · Oncology · Updated 4/19/2026

  • Renal Mass / Localized Renal Cancer Guidance (decision aid)

    Checklist-style support for localized renal mass pathway discussions.

    Urology · Oncology · Updated 4/19/2026

  • RENAL Nephrometry Score

    Anatomical complexity scoring for renal masses (R,E,N,A,L components).

    Urology · Oncology · Updated 4/19/2026

  • SSIGN Score (RCC, simplified)

    Simplified Stage-Size-Grade-Necrosis adverse feature scoring for RCC.

    Urology · Oncology · Updated 4/19/2026

  • STONE Score (ureteral stone, simplified)

    Clinical prediction score aid for uncomplicated ureteral stone.

    Urology · Emergency · Updated 4/19/2026

  • UCLA Integrated Staging System (UISS, simplified)

    Simplified RCC risk grouping from stage, grade, and ECOG.

    Urology · Oncology · Updated 4/19/2026