Efficacy of the automatic implantable cardioverter-defibrillator in prolonging survival in patients with severe underlying cardiac disease

摘要: The ability of the automatic implantable cardioverter-defibrillator to prolong overall survival, particularly in patients with significantly depressed cardiac function, has not been well documented. Of 119 who received defibrillator this institution, 40 had a left ventricular ejection fraction less than 30% (Group A) and 79 an greater or equal B). For each group, cumulative survival was compared projected if used. Projected based on assumption that first appropriate shock would have resulted death without defibrillator. Group A, 3 year rate 67 +/- 12% versus 6 15% (p 0.001). B, 96 3% 46 8% Both rates for A were worse B 0.01). both Groups comparable observed similar treated In summary, prolonged even poor function. technique estimating appears allow realistic estimate reduction mortality achieved by