TY - JOUR
T1 - Noninvasive in utero assessment of PR and QRS intervals from the fetal magnetocardiogram
AU - Leuthold, Arthur
AU - Wakai, Ronald T.
AU - Martin, Chester B.
PY - 1999/4/1
Y1 - 1999/4/1
N2 - Fetal cardiac waveform intervals were assessed from fetal magnetocardiogram (FMCG) recordings taken from 59 pregnant women at 17-41 weeks gestation. Beyond 27 weeks' gestation PR and QRS intervals, measured from averaged waveforms, could be obtained from all subjects; however, prior to 21 weeks' gestation the success rate was 50% or less due to low signal-to-noise ratio. QT interval could not be assessed accurately in most subjects. Weak, but statistically significant, correlations with gestational age were found for PR interval (n=145, R2=0.033, P=0.028) and QRS interval (n=145, R2=0.140, P<0.0005). Abnormal waveform morphology was documented in several patients with cardiac malformations. Copyright (C) 1999 Elsevier Science Ireland Ltd.
AB - Fetal cardiac waveform intervals were assessed from fetal magnetocardiogram (FMCG) recordings taken from 59 pregnant women at 17-41 weeks gestation. Beyond 27 weeks' gestation PR and QRS intervals, measured from averaged waveforms, could be obtained from all subjects; however, prior to 21 weeks' gestation the success rate was 50% or less due to low signal-to-noise ratio. QT interval could not be assessed accurately in most subjects. Weak, but statistically significant, correlations with gestational age were found for PR interval (n=145, R2=0.033, P=0.028) and QRS interval (n=145, R2=0.140, P<0.0005). Abnormal waveform morphology was documented in several patients with cardiac malformations. Copyright (C) 1999 Elsevier Science Ireland Ltd.
KW - Fetal electrocardiogram
KW - Fetal magnetocardiogram
KW - Fetal monitoring
KW - Fetal rhythm
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U2 - 10.1016/S0378-3782(98)00100-5
DO - 10.1016/S0378-3782(98)00100-5
M3 - Article
C2 - 10321790
AN - SCOPUS:0033005181
SN - 0378-3782
VL - 54
SP - 235
EP - 243
JO - Screening
JF - Screening
IS - 3
ER -