Aortocaval compression and uterine displacement.
D001011:Aorta / Q000503:physiopathology*; D001794:Blood Pressure; D001916:Brachial Artery / Q000503:physiopathology; D005260:Female; D005263:Femoral Artery / Q000503:physiopathology; D006339:Heart Rate; D006615:Hip / Q000098:blood supply; D006801:Humans; D007022:Hypotension / Q000209:etiology*; D007866:Leg / Q000098:blood supply; D007744:Obstetric Labor Complications; D011187:Posture; D011247:Pregnancy; D011312:Pressure; D014599:Uterus; D014682:Vena Cava, Inferior / Q000503:physiopathology*