Key result
CRT-D reduces risk similarly across ischemic and nonischemic cardiomyopathy.
CRT-D appears to have a similar effect size in patients with ischemic cardiomyopathy (NYHA class I or II) and nonischemic cardiomyopathy, though more prospective data are needed.
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Supports CRT-D benefit across cardiomyopathy etiologies; leaves open prospective randomized confirmation.
Kastner et al. (2014) conducted a letter in Ischemic cardiomyopathy with NYHA class I or II and nonischemic cardiomyopathy. CRT-D was evaluated. CRT-D demonstrated similar effect sizes (hazard ratios of 0.66, 0.65, and 0.57) across patients with ischemic cardiomyopathy (NYHA class I or II) and nonischemic cardiomyopathy.
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