AAF	Acute atrial fibrillation
AC	Aortic clamping
AMI	Acute myocardial infarction
CABG	Coronary Artery Bypass Grafting
CABG with CPB	Coronary Artery Bypass Grafting with Cardio-Pulmonary Bypass
CPB	Cardio-Pulmonary Bypass
CRP	C-reactive protein
DB	Double blinding
DM	Differences in means
ERAS	Enhanced Recovery After Surgery
GA with ETT	General Anaesthesia with Endotracheal Intubation
GI	Gastrointestinal
GLN	Glutamine
ICU	Intensive care unit
LOS	Length of stay
OC	Observed cases
OCH	Oral carbohydrate
OPCAB	Off-Pump Coronary Artery Bypass Grafting
POAF	Postoperative atrial fibrillation
PONV	Post-operative nausea and vomiting
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
RCTs	Randomized controlled trials
ROB	Risk of bias
SB	Single blinding
SMD	Standardized mean difference
T2DM	Type 2 diabetes mellitus
VAS	Visual analog scale