The Value of Electrophysiology Study and Prophylactic Implantation of Cardioverter Defibrillator in Patients with Hypertrophic Cardiomyopathy

摘要: Fifty-three consecutive patients with hypertrophic cardiomyopathy (HCM) and no history of sudden death underwent electrophysiology (EP) study. Sustained polymorphic ventricular tachycardia (VT) or fibrillation (VF) was induced in 19 (35%). Patients prior syncope near had a higher incidence VT/VF inducibility. An implantable cardioverter defibrillator (i.c.d.) placed 14 the patients. Of remaining 5 inducible VT/VF, three refused ICD implantation, while two septal myectomy longer after operation. None received antiarrhythmic drugs. During mean follow-up period 47 +/- 31 (2-117) months, events occurred 34 negative EP Three among VT/VF. One patient died suddenly, one developed wide complex which required resuscitation, an appropriate shock. In conclusion, sustained about one-third HCM. Noninducibility appeared to predict favorable prognosis. Although overall event rate low prophylactic implantation multiple risk factors may be appropriate.