Detection of systolic and diastolic time intervals of the fetal heart.
D036861:Delivery, Obstetric; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005311:Fetal Hypoxia / Q000175:diagnosis; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007231:Infant, Newborn; D011247:Pregnancy; D013997:Time Factors