title: Idiopathic orthostatic hypotension: circulatory dynamics in chronic autonomic insufficiency.
mesh_terms: D000368:Aged; D001341:Autonomic Nervous System / Q000503:physiopathology*; D001810:Blood Volume; D002302:Cardiac Output; D002306:Cardiac Volume; D003326:Coronary Circulation; D005260:Female; D006339:Heart Rate; D006439:Hemodynamics; D006801:Humans; D007024:Hypotension, Orthostatic / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D009422:Nervous System Diseases / Q000503:physiopathology*; D010953:Plasma Volume; D011652:Pulmonary Circulation; D012039:Regional Blood Flow; D014655:Vascular Resistance