shocks
Failure
COMPANION
6
COMPANION
Design
Parallel, randomized clinical trial in 1600 patients with moderate or severe heart failure with QRS >120 ms and PR interval >150 ms (Bristow MR et al. N Engl J Med 2004; 350: 2140-2150) Patients randomized in a 1:2:2 fashion to optimal medical therapy; optimal drug therapy plus CRT; or optimal drug therapy plus CRT with an ICD (CRT-D)
Large group of patients in need of ICDs for primary prevention New era of biventricular pacing to improve HF symptoms COMPANION and CARE-HF
5
Comparison of Medical Therapy, Pacing, and Defibrillation in Heart
18
Problems encountered
Lead problems 27 lead-related problems, such as fracture or displacement, in the 409 patients randomized to CRT Number of cases of coronary sinus dissection, none of which caused death One procedure-related death in each group