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. 2020 Nov 20;5(3):154–159. doi: 10.22603/ssrr.2020-0170

Table 4.

Comparison Between Hypothermia and Normothermia Groups.

Hypothermia Normothermia P-value
n 40 63
Age, yr 14.3 14.6 0.438
Sex, n M: 12 M: 16 0.609
F: 28 F: 47
Diagnosis, n AIS: 16 AIS: 40 0.02*
non-AIS: 24 non-AIS: 23
Height, cm 147.9 152.7 0.053
Weight, kg 36.1 44.5 <0.001*
Body mass index, kg/m2 16.3 18.9 <0.001*
Operative time, min 335.5 296.6 0.05
Estimated blood loss, mL 1218.6 877.3 0.019*
Number of fused vertebrae, n 12.9 11.1 0.008*
Preoperative Cobb angle, degrees 79.6 63.7 0.002*
Core body temperature Initial, °C # 36 36.6 <0.001*
Beginning of surgery, °C 35.9 36.4 <0.001*
End of surgery, °C 36.3 37.1 <0.001*
Time from end of surgery to extubation, min 36.3 40.5 0.217
Hospital stay, days 24.6 21.7 0.377
Postponed extubation, % 25 9.5 0.035*
Complications, % 35 19 0.069
Surgical site infection, % 12.5 11.1 0.83

Abbreviations: AIS, adolescent idiopathic scoliosis

# Measured immediately after induction of anesthesia

*P<0.05

Patients in the Hypothermia group were more likely to have a diagnosis of non-AIS, lower BMI, larger EBL, greater number of fused vertebrae, larger preoperative Cobb angle, lower core body temperature at the time of anesthesia induction, and higher rate of postponed extubation. We could not find a statistically significant difference in the rate of perioperative complications and surgical site infection between the two groups.