164. 下列關於 sudden cardiac death (SCD) 的敘述，何者為非？ (A) SCD can be the first clinical manifestation of coronary heart disease in 20-25% or more of all coronary heart disease patients. (B) Cardiomyopathies, dilated and hypertrophic, account for at least 70% of SCDs in Western countries. (C) Coronary spasm may cause serious arrhythmias and SCD, especially when combined with coronary artery atherosclerosis. (D) Patients at risk for SCD may have prodromes such as chest pain, dyspnea, weakness or fatigue, palpitation, syncope etc. (E) Left ventricular hypertrophy is an independent risk factor for SCD.

161.下列關於 hypersensitivity carotid sinus syndrome 的敘述何者為非? (A) Cardioinhibitory carotid sinus hypersensitivity is characterized by ventricular asystole exceeding 3 seconds during carotid sinus stimulation. (B) Vasodepressor carotid sinus hypersensitivity is generally characterized by a 50-mm Hg fall in systolic blood pressure without associated cardiac slowing. (C) Diagnosis can be done by carotid massage with pressure applied bilaterally over carotid - 33 - pulsation for about 5 seconds after listening for a carotid bruits. (D) Hypersensitive carotid sinus reflex is most commonly associated with coronary artery disease. (E) Combinations of vasodepressor and cardioinhibitory types can occur.

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