title: Fetal movements associated with fetal heart rate accelerations and decelerations.
abstract: In normal pregnant women, the relationship between the FHR and fetal movements (FM) was evaluated during 1,541 consecutive observed FM of at least 1 second's duration. Two observed FHR changes were: (1) accelerations and (2) accelerations followed by decelerations. An acceleration in FHR was observed in association with 91.2 per cent of all FM of 1 to 3 seconds' duration and with 99.8 per cent of FM of longer than 3 seconds' duration. FM were associated with an acceleration followed by a deceleration 66.7 per cent of the time. FM lasting longer than 1 second and associated with neither accelerations nor decelerations were seen 1.8 per cent of the time.
mesh_terms: D005260:Female; D005318:Fetal Heart / Q000503:physiopathology*; D005323:Fetal Monitoring; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy