SPECTRAL-ANALYSIS OF ANTEPARTUM FETAL HEART-RATE-VARIABILITY FROM FETAL MAGNETOCARDIOGRAM RECORDINGS

被引:31
作者
WAKAI, RT
WANG, MH
PEDRON, SL
REID, DL
MARTIN, CB
机构
[1] UNIV WISCONSIN, DEPT MED PHYS, MADISON, WI USA
[2] UNIV WISCONSIN, DEPT OBSTET & GYNECOL, MADISON, WI USA
关键词
FETAL MAGNETOCARDIOGRAM; FETAL HEART RATE SPECTRAL ANALYSIS; FETAL HEART RATE VARIABILITY; RESPIRATORY SINUS ARRHYTHMIA;
D O I
10.1016/0378-3782(93)90134-G
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
Fetal heart rate variability was derived from fetal magnetocardiogram recordings in ten subjects at gestation ages 32-38 weeks. Maternal interference was negligible and R-wave detection was highly reliable. Oscillations suggestive of respiratory sinus arrhythmia (RSA) were prominent in many of the heart rate tracings. Spectral analysis was used to quantify heart rate variability and to examine the influence of the RSA-like oscillations on heart rate variability. The oscillations were associated with increased power in the frequency range 0.4-1.0 Hz (P less than or equal to 0.05). Magnetic recording appears to offer significant advantages for investigation of beat-to-beat fetal heart rate throughout the latter stages of pregnancy.
引用
收藏
页码:15 / 24
页数:10
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