Abbreviations, acronyms & symbols
ACE-i/ARB	= Angiotensin-converting enzyme inhibitor/		HT	= Hypertension
	angiotensin receptor blockers		IL	= Interleukin
AF	= Atrial fibrillation		MPV	= Mean platelet volume
CABG	= Coronary artery bypass graft		25-(OH)	= 25-hydroxy (OH)
COPD	= Chronic obstructive pulmonary disease		POAF	= Postoperative atrial fibrillation
DM	= Diabetes mellitus		RAAS	= Renin-angiotensin-aldosterone system
ECG	= Electrocardiogram		RDW	= Red blood cell distribution width
EF	= Ejection fraction		SD	= Standard deviation
HF	= Heart failure		TIA	= Transient ischemic attack
HL	= Hyperlipidemia		vitD	= Vitamin D