Very long-term follow-up data of non-ischemic idiopathic dilated cardiomyopathy after beta-blocker therapy: recurrence of left ventricular dysfunction and predictive value of

The management of idiopathic dilated cardiomyopathy (DCM) is well established. However, a subset of patients do not have recovery from or have recurrences of left ventricular (LV) dysfunction despite receiving optimal medical therapy. There are limited long-term follow-up data about LV function and the predictive value of iodine-123-metaiodobenzylguanidine (