CENTRAL	Cochrane Central Register of Controlled Trials
CI	Confidence interval
ERAS	Enhanced recovery after surgery
GRADE	Grading of Recommendations Assessment, Development and Evaluation
ICTRP	International Clinical Trials Registry Platform
ICU	Intensive care unit
MD	Mean difference
MeSH	Medical Subject Headings
NRS	Numerical rating scale
NVS	Numerical verbal scale
PACU	Post-anesthesia care unit
PRESS	Peer Review of Electronic Search Strategies
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PRISMA-P	Preferred Reporting Items for Systematic Reviews and Meta-Analyses–Protocols
PTDS	Perioperative Thirst Discomfort Scale
RCTs	Randomized controlled trials
REML	Restricted maximum likelihood
RoB 2	Cochrane Risk of Bias Tool version 2.0
ROBINS-I	Risk Of Bias In Non-randomized Studies of Interventions
RR	Risk ratio
SMD	Standardized mean difference
SoF	Summary of findings
TSAS	Thirst Symptom Assessment Scale
VAS	Visual analog scale