PMID- 23949921 OWN - NLM STAT- MEDLINE DCOM- 20140428 LR - 20221207 IS - 1179-6901 (Electronic) IS - 1174-5886 (Print) IS - 1174-5886 (Linking) VI - 13 IP - 3 DP - 2013 Sep TI - Effect of race on left ventricular ejection fraction decline after initial improvement with beta blockers in patients with non-ischemic cardiomyopathy: a retrospective analysis. PG - 183-90 LID - 10.1007/s40268-013-0021-9 [doi] AB - BACKGROUND: Although beta blockers (BBs) are established therapy in heart failure, some patients whose left ventricular ejection fraction (LVEF) initially increases on BB therapy experience a subsequent LVEF decline. This study aimed to evaluate the proportion of patients with non-ischemic cardiomyopathy (NICM) whose LVEF declines while on BB therapy and determine important predictors of LVEF decline. METHODS: A retrospective analysis of 238 patients receiving a BB (carvedilol, metoprolol succinate, or tartrate), with an ejection fraction of /=5% after 1 year of BB therapy, was conducted. Post-response LVEF decline >/=5% to a final LVEF of