Normal distribution data: means ± standard deviations.

Non-normal distribution data: medians and interquartile ranges.

CS = cardiac sarcoidosis, COPD = chronic obstructive pulmonary disease, PM = pacemaker, ICD = implantable cardioverter defibrillator, VT = ventricular tachycardia, HF = heart failure, NYHA = New York Heart Association, ACEi =angiotensin-converting enzyme inhibitor, ARB = angiotensin-receptor blocker, CRT = cardiac resynchronization therapy, LA = left atrium, LVEF = left ventricular ejection fraction, LVEDV = left ventricular end-diastolic volume, LVESV = left ventricular end-systolic volume, MR = mitral regurgitation, BNP = brain natriuretic peptide, CRT-P = cardiac resynchronization therapy pacing with a pacemaker, CRT-D = cardiac resynchronization therapy with a defibrillator.