THE EFFECT OF HEART-RATE ON DOPPLER FLOW VELOCITY SYSTOLIC-DIASTOLIC RATIOS IN UMBILICAL AND UTEROPLACENTAL ARTERIAL WAVE-FORMS

被引：8

作者：

NEWNHAM, J ^{[1
]}

PATTERSON, L ^{[1
]}

JAMES, I ^{[1
]}

REID, S ^{[1
]}

机构：

[1] UNIV WESTERN AUSTRALIA,DEPT MATH,NEDLANDS,WA 6009,AUSTRALIA

来源：

EARLY HUMAN DEVELOPMENT | 1990年 / 21卷 / 01期

基金：

英国医学研究理事会;

关键词：

Doppler ultrasound; fetal; heart rate;

D O I：

10.1016/0378-3782(90)90107-T

中图分类号：

R71 [妇产科学];

学科分类号：

100211 ;

摘要：

In an analysis of the influence of heart rate on Doppler flow velocity waveformsystolic/diastolic ratios from 1555 umbilical artery waveform studies and from 1497 uteroplacental waveform studies, a negative correlation was observed between the ratio and the corresponding heart rate. This relationship was not influenced by gestational age and was similar in pregnancies with normal outcomes when compared with all pregnancies. The magnitude of this inverse relationship is such that the effect of heart rate on systolic/diastolic ratios must be considered when Doppler flow velocity waveform analyses are used as experimental tools to assess placental vascular resistance but it does not appear to be an important factor in general clinical practice when measurements are made during fetal inactivity and when heart rates are within normal ranges. © 1990.

引用

页码：21 / 29

页数：9

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