Fetal QRS duration measured via maternal abdominal ECGs showed a highly significant relation with birth weight, allowing prediction of birth weight with a standard deviation of 302 g.
Cross-Sectional (n=421)
Does fetal QRS duration measured via abdominal ECG correlate with fetal maturity and birth weight in uncomplicated pregnancies?
Fetal QRS duration measured via abdominal ECG correlates closely with fetal maturity and can predict birth weight with reasonable accuracy.
By means of a new averaging system, fetal electrocardiograms (ECGs) were obtained simultaneously from three orthogonal leads on the maternal abdomen. The duration of the QRS complex was measured in 421 pregnant women with uncomplicated pregnancies chosen at random between 17 and 41 weeks gestation. Normal standards were established and a close relation was found between QRS duration and the maturity of the fetus. A highly significant relation was observed in 78 patients between the birth weight and the QRS duration. Estimates of birth weight from QRS interval have a standard deviation of 302 g and this may allow the prediction of birth weight with reasonable accuracy. Information on the properties of the fetal ventricular conduction system can be derived from the data presented.
Brambati et al. (Sat,) conducted a cross-sectional in Uncomplicated pregnancies (n=421). Fetal electrocardiogram (ECG) QRS duration measurement was evaluated on Relation between QRS duration and fetal maturity/birth weight. Fetal QRS duration measured via maternal abdominal ECGs showed a highly significant relation with birth weight, allowing prediction of birth weight with a standard deviation of 302 g.
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