Key result
Left ventricular output in healthy full-term infants remained high at 235-243 ml/min/kg in the first two hours after birth, then fell significantly to 187 ml/min/kg between 2 and 24 hours.
Why the study?
How does left ventricular output change during postnatal circulatory adaptation in healthy full-term infants?
Observational (n=16)
How does left ventricular output change during postnatal circulatory adaptation in healthy full-term infants?
Left ventricular output in healthy full-term infants remains high for the first two hours of life before falling significantly by 24 hours, likely reflecting adaptation to ductal constriction.
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May inform early neonatal cardiac assessment beyond heart rate; leaves open validation in larger cohorts or high-risk infants.
Winberg et al. (1989) conducted an observational in Healthy infants born at full term (n=16). Postnatal circulatory adaptation was evaluated on Left ventricular output. Left ventricular output in healthy full-term infants remained high at 235-243 ml/min/kg in the first two hours after birth, then fell significantly to 187 ml/min/kg between 2 and 24 hours.
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