Equipment for direct FHR monitoring during labor. A comparative artefact study.
D000669:Amplifiers, Electronic; D036861:Delivery, Obstetric; D004562:Electrocardiography / Q000295:instrumentation*; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008722:Methods; D011247:Pregnancy