Abrupt fall in the fetal heart rate during labour.
Cardiotocograms of 6044 patients in labour were examined for evidence of an abrupt fall in the fetal heart 50 beats within 3 minutes, without a demonstration of signs of recovery in the following 2 minutes. Only 9 instances could be found -- an incidence of 0,15%. Umbilical cord entanglement possibly played a role in 6 of these instances, and 2 of the infants concerned were stillborn. Intra-uterine growth retardation was associated with deceleration in 3 infants, 1 of whom was stillborn.
D000293:Adolescent; D000328:Adult; D001919:Bradycardia / Q000209:etiology*; D005260:Female; D005313:Fetal Death / Q000209:etiology; D005315:Fetal Diseases / Q000209:etiology*; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D007744:Obstetric Labor Complications; D011247:Pregnancy; D014470:Umbilical Cord