Ultrasonic fetal heart monitoring.
D005260:Female; D005313:Fetal Death / Q000175:diagnosis; D005318:Fetal Heart; D005865:Gestational Age; D006326:Heart Auscultation; D006801:Humans; D008722:Methods; D008991:Monitoring, Physiologic; D011247:Pregnancy; D014463:Ultrasonography