[On the electrocardiographic changes in women with heart defects during pregnancy, labor and puerperium].
D004562:Electrocardiography; D005260:Female; D006330:Heart Defects, Congenital; D006801:Humans; D049590:Postpartum Period; D011247:Pregnancy; D011248:Pregnancy Complications; D012214:Rheumatic Heart Disease
ELECTROCARDIOGRAPHY/in pregnancy; PREGNANCY/complications; RHEUMATIC HEART DISEASE/in pregnancy