Abbreviation	Definition
AF	atrial fibrillation
CAD	coronary artery disease
CKD	chronic kidney disease
COI	current of injury
CRT	cardiac resynchronization therapy
DCM	dilated cardiomyopathy
EF	ejection fraction
HFrEF	heart failure with reduced ejection fraction
IQR	interquartile range
LBB	left bundle branch
LBBP	left bundle branch pacing
PAD	peripheral arterial disease
PH	pulmonary hypertension
pRWPT6	paced R-wave peak time in lead V6
RWPT	R-wave peak time
SD	standard deviation
V	volts
mV	millivolts
Ω	ohms
ms	milliseconds