Acceleration of the fetal heart rate.
Acceleration of the fetal heart rate during contractions was usually followed by deceleration, and evidence is presented to show that it results from increased sympathetic drive and may be associated with fetal tissue hypoxia. However, the presence of accelerations are not serious and merely warn the obstetrician of the possibility of the occurrence of subsequent decelerations. The mechanism thought most likely to produce accelerations is uterine compression of the umbilical vein during contractions.
D001919:Bradycardia / Q000209:etiology; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005333:Fetus / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D010101:Oxygen Consumption; D011247:Pregnancy; D012535:Scalp / Q000378:metabolism; D013610:Tachycardia / Q000209:etiology; D014590:Uterine Contraction