title: Fetal subcutaneous scalp PO2 and abnormal heart rate during labor.
abstract: Intrapartum fetal heart rate and subcutaneous scalp PO2 were continuously measured with a combined electrocardiogram-PO2 needle electrode in 34 patients. The incidence of fetal heart rate abnormalities increased significantly with decreasing subcutaneous PO2, from 0.8% of the 10-minute periods in which subcutaneous PO2 was greater than or equal to 25 mm Hg to 53% of the periods in which subcutaneous PO2 was less than 10 mm Hg.
mesh_terms: D004566:Electrodes; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring; D006339:Heart Rate; D006801:Humans; D007743:Labor, Obstetric; D010100:Oxygen / Q000378:metabolism*; D011247:Pregnancy; D011312:Pressure; D012535:Scalp / Q000378:metabolism
chemical_list: D010100:Oxygen