Self‐warming blanket versus forced‐air warming blanket during total knee arthroplasty under spinal anaesthesia: A randomised non‐inferiority trial
Authors' conclusion
Statistically, the SW blanket was non-inferior to the FAW method. Yet, hypothermia was more frequent in the SW group, requiring rescue warming as we strictly held to the NICE guideline.
Study context
- Population
- Patients scheduled for primary unilateral total knee arthroplasty under spinal anaesthesiarandomised
- Participants
- 150 patients
- Comparison
- Self-warming blanket vs upper-body forced-air warming blanket
- Primary endpoint
- Core temperature on admission to the recovery room
Methodological detailsnon-inferiority, prospective, Patients with core temperature below 36°C rescue-warmed with forced-air warming (FAW) blanket set to 43°C
- Non-inferiority
- Prospective
- Patients with core temperature below 36°C rescue-warmed with FAW blanket set to 43°C
Primary result
As reported in the abstract
admission to the recovery room
- Core temperature did not differ between groups (CI: −0.18-0.06)
- p = .366
- Non-inferiority: Self-warming (SW) blanket statistically non-inferior to FAW
Further findings
Intraoperative hypothermia
Mean body temperature during pre-warming
- Increased with both methods
Original publication
Self‐warming blanket versus forced‐air warming blanket during total knee arthroplasty under spinal anaesthesia: A randomised non‐inferiority trial. Acta Anaesthesiol Scand. Published 28 May 2023. doi:10.
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