Abbreviations: CCS: Canadian Cardiovascular Society; COPD: Chronic obstructive pulmonary disease; DCM: dilated cardiomyopathy; ICM: inflammatory cardiomyopathy; IQR: interquartile range; LVEDD: left ventricular end-diastolic diameter; NYHA: New York Heart Association; PVC: premature ventricular contraction; SD: standard deviation; SVT: supraventricular tachycardia; TCM: tachycardia-induced cardiomyopathy; VT: ventricular tachycardia. The numbers highlighted in boldface indicate statistically significant differences between groups.