Device Use Patterns and Clinical Outcome of Implantable Cardioverter Defibrillator Patients with Moderate and Severe Impairment of Left Ventricular Function

摘要: The beneficial effects of implanted cardioverter defibrillator (ICD) therapy in patients with malignant ventricular tachyarrhythmias and variable degrees left (LV) dysfunction are debated. ICD use patient survival were examined 128 arrhythmias moderate or severe LV dys function. Group I included 64 (LV ejection fraction > 30%) group H, fracfion ≤ 30%). Follow-up period ranged from 1 to 78 months. two groups similar age, incidence coronary artery disease presenting arrhythmia. mean was 44%± 8% II 22%± 5% (P < 0.0001). At 4 years follow-up, 66% 62% = NS) had activation for presumed tachyarrhythmia. Survival calculated using actuarial analysis. Arrhythmic sudden death mortality at follow-up 4% 7% NS). Cardiac I, 0.05), 12% (fP 0,01), 15% 0.01), 0.01) 1, 2, 3, 4, respectively. For II, cardiac 27%, 36%, 41%, 41% majority deaths both observed the first 2 follow-up. However, groups, comparable who did (users) not (nonusers) experience appropriate shocks. Thus, long-term is dysfunction. higher irrespective device use. clinical outcome users non can be related elimination arrhythmic mortality. Long-term recipients remains substantial even