Fetal circulatory responses to maternal blood loss.

Abstract:

:We examined the fetal circulatory responses to maternal blood loss in pregnant women during the third trimester. Seven healthy women with placenta previa and singleton pregnancies underwent phlebotomies in an autologous donation program. Four hundred milliliters of blood was collected within 15 min at 34 and 35 weeks of gestation. Continuous electric recordings of fetal heart rate were performed during the first blood collection, and the maternal uterine artery (UtA), umbilical artery (UmA) and fetal middle cerebral artery (MCA) Doppler velocity waveforms were recorded before, immediately after and 24 h after the second collection in each patient. The average fetal heart rate, maternal UtA and UmA pulsatility indices did not change measurably during or after maternal blood collections. However, the average fetal MCA pulsatility index decreased significantly 24 h after maternal blood loss. The observation of a decrease in fetal MCA pulsatility index may indicate delayed fetal asphyxia following mild maternal hemorrhage.

journal_name

Gynecol Obstet Invest

authors

Suzuki S,Tateoka S,Yagi S,Ishikawa G,Ohshita T,Sawa R,Yoneyama Y,Asakura H,Araki T

doi

10.1159/000052915

keywords:

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

157-9

issue

3

eissn

0378-7346

issn

1423-002X

pii

52915

journal_volume

51

pub_type

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