Multivariable predictors of reverse remodeling were as follows : ( 1 ) either of 2 BV fusion patterns : QRS normalization in leads V1 and V2 ( n = 66 [ 18 % ] ; odds ratio [ OR ] 3.71 ; 95 % confidence interval [ CI ] 1.26-10 .94 ) or a new or an increased R wave in leads V1-V2 ( n = 267 [ 71 % ] ; OR 1.55 ; 95 % CI 0.65-3 .65 ) ; ( 2 ) QRS difference -25 ms ( OR 2.35 ; 95 % CI 1.12-4 .91 ) ; and ( 3 ) good substrate ( low to moderate QRS score and LV activation time 110 ms ; OR 2.94 ; 95 % CI 1.68-5 .14 ) .