FHR short and long-term variability associated with fetal breathing.
D004562:Electrocardiography; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring; D005333:Fetus / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy; D012119:Respiration; D014463:Ultrasonography