Abbreviations

COX-2	Cyclo-oxygenase-2
GoR	Grade of recommendation
IM	Intramuscular
IV	Intravenous
LA	Local anaesthetic/anaesthesia
LoE	Level of evidence
LSG	Laparoscopic sleeve gastrectomy
NRS	Numerical rating scale
NS	Not significant
NSAID	Nonsteroidal anti-inflammatory drug
OSTAP block	Oblique subcostal transversus abdominis plane block
PACU	Post-anaesthesia care unit
PCA	Patient-controlled analgesia
PONV	Postoperative nausea and vomiting
TAP Block	Transversus abdominis plane block
VAS	Visual analogue score
VRS	Verbal rating scale

2nd World Day of Regional Anaesthesia & Pain Medicine