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Obstetrics & Gynecology 1972;39:295-303
© 1972 by The American College of Obstetricians and Gynecologists
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Systolic Time Intervals in the Fetus and Neonate

ROBERT C. GOODLIN, MD, FACOG, JOHN GIRARD, MD and ARNO HOLLMEN, MD

Departments of Gynecology and Obstetrics, and Anesthesia, Stanford University Medical Center, Stanford, Calif 94305.

Abstract

By high-speed recording of fetal and newborn EKG, heart sounds, and pulse wave systolic time intervals were determined in fetuses and subsequent newborns. In the apparently normal intrapartum fetus, the systolic time intervals remained constant regardless of heart rate; but in the antepartum fetus and immediate newborn, these intervals varied inversely with rate. While the QS1 interval remained constant throughout fetal life, it was lengthened in an intrapartum fetus with severe distress, suggesting a new biophysical test for fetal malfunction.






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Copyright © 1972 by the American College of Obstetricians and Gynecologists.