Circulation. 2002;105:1453-1458
Published online before print March 18, 2002, doi: 10.1161/01.CIR.0000012350.99718.AD
Published online before print March 18, 2002, doi: 10.1161/01.CIR.0000012350.99718.AD
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(Circulation. 2002;105:1453.)
© 2002 American Heart Association, Inc.
Primary Prevention of Sudden Cardiac Death in Idiopathic Dilated Cardiomyopathy
The Cardiomyopathy Trial (CAT)
From the Department of Cardiology, St Georg Hospital, Hamburg, Germany (D.B., M.A., B.B., M.V., K.H.K.); the Department of Cardiology, University Hospital, Hannover, Germany (J.T.); the Department of Cardiology, Klinikum Ludwigshafen (K.S.); the Department of Cardiology and Angiology, University Hospital, Münster (M.B.); the Department of Mathematics and Data Processing in Medicine, University Hospital Eppendorf, Hamburg, Germany (J.B.); and the Department of Cardiology, Central Hospital, Bielefeld, Germany (F.G.).
Correspondence to Dr Karl Heinz Kuck, St Georg Hospital, Lohmühlenstr 5, D-20099 Hamburg, Germany. E-mail kuck{at}uke.uni-hamburg.de
Background— Patients with idiopathic dilated cardiomyopathy (DCM) and impaired left ventricular ejection fraction have an increased risk of dying suddenly.
Methods and Results— Patients with recent onset of DCM (
9 months) and an ejection fraction 30% were randomly assigned to the implantation of an implantable cardioverter-defibrillator (ICD) or control. The primary end point of the trial was all-cause mortality at 1 year of follow-up. The trial was terminated after the inclusion of 104 patients because the all-cause mortality rate at 1 year did not reach the expected 30% in the control group. In August 2000, the vital status of all patients was updated by contacting patients, relatives, or local registration offices. One hundred four patients were enrolled in the trial: Fifty were assigned to ICD therapy and 54 to the control group. Mean follow-up was 22.8±4.3 months, on the basis of investigators’ follow-up. After 1 year, 6 patients were dead (4 in the ICD group and 2 in the control group). No sudden death occurred during the first and second years of follow-up. In August 2000, after a mean follow-up of 5.5±2.2 years, 30 deaths had occurred (13 in the ICD group and 17 in the control group). Cumulative survival was not significantly different between the two groups (93% and 80% in the control group versus 92% and 86% in the ICD group after 2 and 4 years, respectively).
Conclusions— This trial did not provide evidence in favor of prophylactic ICD implantation in patients with DCM of recent onset and impaired left ventricular ejection fraction.
Key Words: cardiomyopathy • defibrillation • tachycardia • fibrillation • death, sudden
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