Prognostic Value of Coronary and Microvascular Flow Reserve in Patients with Nonischemic Dilated Cardiomyopathy

Increased left atrial diameter and depressed β reserve were independent predictors of cardiac death and transplantation in patients with nonischemic dilated cardiomyopathy. Beta reserve by RTMPE provided incremental predictive value beyond that provided by current known prognostic clinical and echocardiographic factors.