Cardiovascular hemodynamics in pregnancy. II. Cardiac output and left ventricular work in multiple pregnancy.
D001775:Blood Circulation; D002302:Cardiac Output; D005260:Female; D006321:Heart / Q000502:physiology*; D006334:Heart Function Tests; D006801:Humans; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular; D011272:Pregnancy, Multiple / Q000502:physiology*