[Identification of the fetal heart with protoveratrine (preliminary report)].
D004562:Electrocardiography; D005260:Female; D005318:Fetal Heart; D005333:Fetus / Q000502:physiology*; D006801:Humans; D011247:Pregnancy; D011526:Protoveratrines; D014703:Veratrum / Q000494:pharmacology*; D014704:Veratrum Alkaloids
D011526:Protoveratrines; D014704:Veratrum Alkaloids
ELECTROCARDIOGRAPHY/in pregnancy; FETUS/physiology; VERATRUM/pharmacology