Perioperative medicine & outcomes
Comparative effects of warming systems applied to different parts of the body on hypothermia in adults undergoing abdominal surgery: A systematic review and network meta-analysis of randomized controlled trials
Authors' conclusion
The results of this NMA revealed that forced-air warming with an underbody blanket effectively elevates core body temperatures in 60 and 120 min after induction of anesthesia and prevents shivering in patients recovering from abdominal surgery.
Study context
- Population
- Adults undergoing abdominal surgery
- Participants
- 1,119 adults · 24 randomized control trials (RCTs)
- Comparison
- Warming systems applied to different body sites vs passive insulation
- Outcome
- Core body temperature after anaesthesia induction
- Follow-up
- 60 and 120 min
Methodological detailsmultivariate random-effects, frequentist framework
- Multivariate random-effects
- Frequentist framework
Pooled result
As reported in the abstract
Core body temperature · 60 and 120 min after anaesthesia induction
Each group vs passive insulationDifference, °C (95% CI)
Forced-air upper body60 min
0.3(0.3–0.4)
Forced-air upper body120 min
1.0(0.7–1.3)
Forced-air lower body60 min
0.4(0.3–0.5)
Forced-air lower body120 min
0.9(0.5–1.2)
Forced-air underbody60 min
0.5(0.5–0.6)
Forced-air underbody120 min
1.2(0.9–1.6)
Further pooled results
| Outcome | OR |
|---|---|
| Postoperative shiveringForced-air lower body vs Passive insulation · significantly reduced risk of shivering | 0.06 |
| Postoperative shiveringForced-air underbody vs Passive insulation · significantly reduced risk of shivering | 0.44 |
| Postoperative shiveringElectric heating blanket lower body vs Passive insulation · significantly reduced risk of shivering | 0.02 |
| Postoperative shiveringElectric heating blanket whole body vs Passive insulation · significantly reduced risk of shivering | 0.07 |
Original publication
Comparative effects of warming systems applied to different parts of the body on hypothermia in adults undergoing abdominal surgery: A systematic review and network meta-analysis of randomized controlled trials. J Clin Anesth. Published 28 June 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →