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

Critical Care · Updated 4/13/2026

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

Respiratory · Updated 4/13/2026

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

Sleep Medicine · Updated 4/13/2026

Questionnaire score for asthma control burden.

Screening Tools · Updated 4/13/2026

Risk score for mortality and need for ventilatory support in AECOPD.

Risk Scores · Updated 4/13/2026

COPD prognostic index based on BMI, airflow obstruction, dyspnea, and exercise capacity.

Risk Scores · Updated 4/13/2026

Symptom burden score for COPD.

Symptom Scores · Updated 4/13/2026

In-hospital mortality risk score in AECOPD.

Risk Scores · Updated 4/13/2026

Mortality risk score in idiopathic pulmonary fibrosis.

Risk Scores · Updated 4/13/2026

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

Pulmonary Function · Updated 4/13/2026

Follow-up guidance framework for incidental pulmonary nodules.

Classification Criteria · Updated 4/13/2026

Mortality staging score in idiopathic pulmonary fibrosis.

Risk Scores · Updated 4/13/2026

COPD severity/grouping framework.

Classification Criteria · Updated 4/13/2026

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

Pulmonary Function · Updated 4/13/2026

Differentiates exudative from transudative pleural effusions.

Diagnostic Scores · Updated 4/13/2026

Modified Medical Research Council dyspnea grading scale.

Disease Activity · Updated 4/13/2026

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

Respiratory · Updated 4/13/2026

Mortality risk score support in viral pneumonia.

Risk Scores · Updated 4/13/2026

Risk stratification for adverse outcomes in COPD exacerbation.

Risk Scores · Updated 4/13/2026

Smoking exposure calculator in pack-years.

General Calculators · Updated 4/13/2026

PE risk profile score using syncope, anemia, and renal dysfunction.

Risk Scores · Updated 4/13/2026

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

Respiratory · Updated 4/13/2026

PIRO prognostic score support for CAP.

Risk Scores · Updated 4/13/2026

Community-acquired pneumonia severity risk class.

Risk Scores · Updated 4/13/2026

Pulmonary embolism 30-day mortality risk stratification.

Risk Scores · Updated 4/13/2026

Mortality risk stratification in pleural infection.

Risk Scores · Updated 4/13/2026

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

Polysomnography Calculators · Updated 4/13/2026

Bleeding risk score during anticoagulation for pulmonary embolism.

Risk Scores · Updated 4/13/2026

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

Respiratory Calculators · Updated 4/13/2026

Single-breath counting screen for possible hypoxia.

Screening Tools · Updated 4/13/2026

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

Respiratory Calculators · Updated 4/13/2026

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

Pulmonary Function · Updated 4/13/2026

Z-scores, % predicted, and LLN for FEV1, FVC, and FEV1/FVC from sex, height, DOB, reference date, ethnicity, and measured values (Quanjer GLI-2012 via vendored Automate-Medical gli2012). Optional FEF and FEV0.75 fields shown without z when not in bundled module. Same role as Ped(z) spirometry; not affiliated with pedz.de.

Pulmonary Function · Updated 4/16/2026

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

Sleep Medicine · Updated 4/13/2026