[Ultrasonic Doppler method in obstetrics].
D000328:Adult; D000818:Animals; D004285:Dogs; D004562:Electrocardiography; D005260:Female; D005313:Fetal Death / Q000175:diagnosis*; D005318:Fetal Heart; D005865:Gestational Age; D006339:Heart Rate; D006801:Humans; D008722:Methods; D010701:Phonocardiography; D010920:Placenta; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D051381:Rats; D014463:Ultrasonography