Results
DILATED CARDIOMYOPATHY, ISCHEMIC HEART DISEASE, ATRIAL FIBRILLATION, IHD, MINERALOCORTICOIDS
Fifty patients with low normal to moderately reduced LVEF were randomized: 26 patients to the intervention group and 24 to the control group. The participants had a mean age of 58 years (SD 14) and 81% were male. The mean p-K was 3.95 mmol/l (SD 0.19), mean LVEF was 48% (SD 7), and mean GLS was − 14.6% (SD 3.1%). Baseline clinical history, medication, blood test results, and echocardiographic parameters were similar in the two groups (Table 
Baseline characteristics for patients in the intervention and control groupDisplayed as mean (± SD) or number (%). A: Late diastolic mitral inflow velocity, ACEi: Angiotensin converting enzyme inhibitor, Afib: Atrial fibrillation, ARB: Angiotensin-II receptor blocker, DCM: Dilated cardiomyopathy, E: early diastolic mitral inflow velocity, e’: Early diastolic mitral annular velocity, GLS: Global Longitudinal Strain, IHD: ischemic heart disease, LVEF: Left ventricular ejection fraction, MD: Mechanical dispersion, MRA: Mineralocorticoid receptor antagonist, RV FWS: Right ventricular free wall strain, TAPSE: Tricuspid annular plane systolic excursion