Non‐dilated left ventricular cardiomyopathy vs. dilated cardiomyopathy: clinical background and outcomes

Abstract Aims Non‐dilated left ventricular cardiomyopathy (NDLVC) was proposed as a new category of cardiomyopathy that included patients with non‐left ventricular (LV) dilatation, LV wall motion abnormality, or LV scar. However, the clinical background and event rates of NDLVC were unclear. The aim of this study was to examine the characteristics and event rates of patients with NDLVC and reduced LV ejection fraction (NDLVC–REF) in comparison with those with dilated cardiomyopathy (DCM). Methods and results We retrospectively included 363 patients with newly diagnosed non‐ischaemic cardiomyopathy and reduced LV ejection fraction (