Fig. 4

LVEF pre-procedure and post-procedure at 4 months and at final follow-up; patients grouped by diagnosis. The mean LVEFs are given for subjects with ischemic cardiomyopathy (red) and non-ischemic dilated cardiomyopathy (blue) and four patients in whom it was unclear whether the cardiomyopathy was ischemic or non-ischemic (yellow). The values are treated as continuous variables. Paired t-test demonstrated significant improvement at 4 months (post-treatment) and at 12 months in the ischemic and non-ischemic categories; there was no significant improvement in the patients for whom the diagnosis was unclear