期刊
EARLY HUMAN DEVELOPMENT
卷 88, 期 4, 页码 203-207出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.earlhumdev.2011.08.007
关键词
Spectral analysis; Heart rate variability; Umbilical arterial low pH; Fetal acidemia; Cardiotocography
Background: Spectral analysis of fetal heart rate (FHR) variability is a useful method to assess fetal condition. There have been several studies involving the change in spectral power related to fetal acidemia, but the results have been inconsistent. Aims: To determine the change in spectral power related to fetal umbilical arterial pH at birth, dividing cases into preterm (31-36 weeks) and term (>= 37 weeks) gestations. Study design: Case-control study. The 514 cases of deliveries were divided into a low-pH group (an umbilical arterial pH <7.2) and a control group (pH >= 7.2). Subjects: FHR recorded on cardiotocography during the last 2 h of labor. Outcome measures: The spectral powers in various bands of FHR variability. Results: In preterm fetuses, the total, low (LF), and movement (MF) frequency spectral powers and LF/HF ratio were significantly lower in the low-pH group than the control group (all P<0.05). In contrast, in term fetuses, the total frequency, LF. and MF powers were significantly higher in the low-pH group than the control group (all P<0.05). The area under the receiver operating characteristic of LF power to detect a low pH at birth was 0.794 in preterm fetuses and 0.595 in term fetuses. The specificity was 86.8% and 93.3% in preterm and term fetuses, respectively. Conclusions: The changes in spectral power responding to a low pH are different between term and preterm fetuses. Spectral analysis of FHR variability may be useful fetal monitoring for early detection of fetal acidemia. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据