Key result
Gestational age was positively correlated with stroke volume, increasing exponentially from 0.7 ml at 20 weeks to 7.6 ml (right ventricle) and 5.2 ml (left ventricle) at 40 weeks.
Why the study?
How do intracardiac blood flow velocities and ventricular stroke volumes change with gestational age in normal human fetuses?
Observational (n=80)
How do intracardiac blood flow velocities and ventricular stroke volumes change with gestational age in normal human fetuses?
In normal human fetuses, right and left ventricular stroke volumes increase exponentially with gestational age, with right ventricular stroke volume consistently exceeding left ventricular stroke volume.
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May aid fetal echo interpretation; leaves open prospective validation against adverse outcomes.
Kenny et al. (1986) conducted an observational in Normal human fetuses (n=80). Gestational age was evaluated on Changes in intracardiac blood flow velocities and right and left ventricular stroke volumes. Gestational age was positively correlated with stroke volume, increasing exponentially from 0.7 ml at 20 weeks to 7.6 ml (right ventricle) and 5.2 ml (left ventricle) at 40 weeks.
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