Population
68 normal human subjects (fetuses and neonates)
Design
Cohort
Follow-up
From before delivery to 12 hours after delivery
Authors
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RV systolic interval predominance post-delivery may inform transitional monitoring; leaves open clinical relevance pending prospective validation.
Simultaneous M-mode echocardiography and electrocardiography reveals significant physiological changes in right and left ventricular systolic time intervals during the transition from antenatal to early neonatal periods.
Toshiyuki Hata (1987) studied this question.
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