title: Correlation of fetal heart rate, maternal heart rate, and age of pregnancy.
abstract: External fetal electrocardiography was performed in three groups of normal pregnant patients delivered of normal newborn infants. Maternal and fetal heart rates were compared and maternal heart rates in the three trimesters were analyzed. Mean heart rates, as well as standard deviations of the three groups, were compared in mother and fetus. The results confirm previous work establishing the independence of fetal and maternal heart rates in the absence of maternal hemodynamic changes mediated by various factors.
mesh_terms: D004562:Electrocardiography / Q000295:instrumentation; D004566:Electrodes; D005260:Female; D005318:Fetal Heart; D005865:Gestational Age; D006321:Heart / Q000502:physiology; D006329:Heart Conduction System / Q000196:embryology / Q000502:physiology; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third