Abstract
91.3%), and mean daily dose of carvedilol (58.6 6 27.5 mg in 30 pts vs 39.1 6 31.5 mg in 25 controls). In univariate models, younger age at HF onset, LBBB, initial EDD, and dose of betablocker (BB) were predictors of ELVR. (p 5 ! .05) In multivariate models, EDD, age, and dose of BB were independent predictors of ELVR. (p 5 ! .05) LBBB was of borderline significance. (p 5 0.06) Conclusions: In IDCM pts with ELVR, smaller baseline EDD, later onset HF, and higher dose of BB are each associated with being an extreme responder on both univariate and multivariate models. There was a trend toward LBBB being a potential predictor of ELVR, or at least not a predictor of poor prognosis.
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