NSVT and lack of beta-blocker use are predictors of appropriate ICD therapy in primary prevention patients with cardiomyopathy.
May refine risk stratification in primary prevention ICD patients; hypothesis-generating and requires prospective validation.
ICD-delivered therapy occurred in 19% of primary prevention patients with both ischemic and dilated cardiomyopathy and was predicted by NSVT and a lack of beta-blocker use.
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Verma et al. (2009) studied this question.