AIS	Adolescent idiopathic scoliosis
PSF	Posterior spinal fusion
ICU	Intensive Care Unit
ERAS	Enhanced Recovery After Surgery
TNF	Tumor necrosis factor
ILs	Interleukins
CRP	C-reactive protein
SIR	Systemic inflammatory response
VAS	Visual Analog Scale
LOS	Length of hospital stay
NSAIDs	Non-steroidal anti-inflammatory drugs
BMI	Body mass index
MCV	Mean Corpuscular Volume
MCH	Mean Corpuscular Hemoglobin
MCHC	Mean Corpuscular Hemoglobin Concentration
RDW	Red Cell Distribution Width
MPV	Mean Platelet Volume
aPTT	Activated Partial Thromboplastin Time
SD	Standard deviation
PGE2	Prostaglandin E2