63. 關於肥厚性心肌病變(hypertrophic cardiomyopathy)下列敘述何者正確?
(A)Systolic anterior motion (SAM) of mitral valve,大部分是指 posterior mitral leaflet
(B)Mortality rate about 10 % per year
(C)Echocardiography is the gold standard for the diagnosis of hypertrophic cardiomyopathy
(D)Family history of unexplained syncope is a clinical marker for high risk of sudden cardiac death