Fetal echo z-scores (Ped(z)-style) is a maternal fetal medicine tool commonly applied in Obstetrics. 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. Use the interactive calculator for inputs, limitations, and primary references.

Not a substitute for clinical judgment. Verify critical values with primary literature, local protocols, and specialist input when appropriate.