[Cardiac activity in the fetus during physiological labor with a pelvic presentation].
D004562:Electrocardiography; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006801:Humans; D007746:Labor Presentation; D007743:Labor, Obstetric; D010701:Phonocardiography; D011247:Pregnancy
Serdechnaia deiatel'nost' u ploda vo vremia fiziologicheskikh rodov pri tazovom predlezhanii.