Table 1 Abbreviations

Abbreviation	Definition
6MWT	6-Minute Walk Test
AF	Atrial Fibrillation
AV	Atrioventricular
AVF	Arteriovenous Fistula
CAD	Coronary Artery Disease
CHD	Congenital Heart Disease
CHF	Congestive Heart Failure
CIEDs	Cardiac Implantable Electronic Devices
COPD	Chronic Obstructive Pulmonary Disease
DC-TV	Dual-chamber Transvenous (DC-TV)
ESRD	End Stage Renal Disease
GLS	Global Longitudinal Strain
HR	Hazard Ratio
HRQoL	Health-Related Quality of Life
HTN	Hypertension
LPs	Leadless Pacemakers
LV	Left Ventricular
LVEF	Left Ventricular Ejection Fraction
MAPSE	Mitral Annular Plane Systolic Excursion
M-mode	Motion-mode
MINORS	Methodological Index for Non-Randomised Studies
NIH	National Institutes of Health
NOS	Newcastle-Ottawa Scale
NICE	National Institute for Health and Care Excellence
NT-pro-BNP	N-terminal pro B-type Natriuretic Peptide
OR	Odds Ratio
PAR	Post-Approval Registry
PACES	Pediatric and Congenital Electrophysiology Society
ROBINS-I	Risk of Bias Tool for Non-Randomised Studies
RV	Right Ventricular
TAPSE	Tricuspid Annular Plane Systolic Excursion
TLR	Transvenous lead removal
TPS	Transcatheter Pacing System
TTE	Transthoracic Echocardiography
TVPs	Transvenous Pacemakers
VP	Ventricular Pacing
SD	Standard Deviation
sdHR	Sub-distribution Hazard Ratio