Aortocaval compression: incidence and prevention.
D001012:Aorta, Abdominal / Q000502:physiology*; D001794:Blood Pressure; D001916:Brachial Artery / Q000502:physiology; D005260:Female; D005263:Femoral Artery / Q000502:physiology; D005315:Fetal Diseases / Q000517:prevention & control; D006801:Humans; D011187:Posture; D011247:Pregnancy; D011312:Pressure; D012039:Regional Blood Flow; D014599:Uterus; D014682:Vena Cava, Inferior / Q000502:physiology*