Effort syncope in aortic stenosis.
D001021:Aortic Valve; D001024:Aortic Valve Stenosis; D003251:Constriction, Pathologic; D006801:Humans; D008945:Mitral Valve Prolapse; D009449:Neurocirculatory Asthenia / Q000209:etiology*; D013575:Syncope
AORTIC VALVE/stenosis; NEUROCIRCULATORY ASTHENIA/etiology and pathogenesis