Fetal Echo Calculators
fetal-echo.org · by Dr Mridul Agarwal

Cardiac Echo Tools

Evidence-anchored decision-support for fetal and paediatric echocardiography. No data leaves your device.

Works offline No account needed No patient data stored For clinicians
Risk Tool · v2.0

Fetal Coarctation Risk

Evidence-anchored risk stratification for antenatal coarctation of the aorta. Live index from published predictors — valve ratios, arch Z-scores, Doppler, strain.

Fetal Z-Scores · v1.0

Fetal Z-Score & Function

Comprehensive fetal cardiac Z-scores: valves, great vessels, arch, chambers, walls, RV function, time fractions, cardiac output and DeVore ratios.

Paediatric · v1.0

Paediatric Echo Z-Scores

M-mode biventricular measurements (Kampmann 2000), coronary artery dimensions (McCrindle 2007 / Dallaire 2011) and Kawasaki risk classification.

AHA 2024 · KD Tool

Kawasaki Disease & Coronary Z-Scores

Coronary artery Z-scores (McCrindle 2007 & Dallaire 2011), 2024 AHA Risk Stratification, Son & Kobayashi risk models, follow-up schedules and DOAC guidelines.

Doppler · v1.0

Fetal Doppler PI/RI

Umbilical & middle cerebral artery, cerebroplacental ratio, uterine artery and ductus venosus percentiles, plus MCA-PSV anemia surveillance (MoM).

Velocities · v1.0

Fetal Cardiac Velocities

Doppler peak velocities across fetal cardiac valves (AoV, PV, MV, TV), automatic E/A ratios and heart rate Z-scores (Zidere 2021 JASE).

All calculations happen on this device Works offline after first visit Evidence base shown in each tool
These tools are clinical decision-support aids for qualified clinicians — not diagnostic tests. Every clinical decision requires independent expert assessment. See individual tools for full evidence base and limitations.
fetal-echo.org · Patient Portal: fetalecho.in · Dr Mridul Agarwal, Sir Ganga Ram Hospital, New Delhi