Syncope.
D001024:Aortic Valve Stenosis / Q000150:complications; D001775:Blood Circulation; D001919:Bradycardia / Q000150:complications; D002346:Carotid Sinus / Q000502:physiology; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000175:diagnosis; D003327:Coronary Disease / Q000150:complications; D003937:Diagnosis, Differential; D006330:Heart Defects, Congenital / Q000150:complications; D006338:Heart Neoplasms / Q000150:complications; D006801:Humans; D002546:Ischemic Attack, Transient / Q000150:complications; D011187:Posture; D013575:Syncope / Q000175:diagnosis / Q000209:etiology*; D013610:Tachycardia / Q000150:complications