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Published on: November 21, 2017
Effectiveness of Forced-air Warming in Preventing Hypothermia During Laparoscopic Surgery: A RCT Meta-analysis
Xiaoli Wang1, Wenyu Su2, Yuqing Mi2
1Shandong Second Medical University, Weifang, Shandong, China; Shandong Cancer Hospital and Institude, Shandong First Medical University and Shandong Academy of Medical Science, Jinan, Shandong, China.
Purpose:
This study aimed to evaluate the effectiveness of forced-air warming in preventing perioperative hypothermia during laparoscopic surgery through a meta-analysis, thereby providing scientific evidence to inform clinical warming strategies.
Design:
A systematic review and meta-analysis of randomized controlled trials investigating the use of forced-air warming during laparoscopic surgery.
Methods:
A comprehensive literature search was conducted in PubMed, Web of Science, Embase, Cochrane Library, China National Knowledge Infrastructure (CNKI), and Wanfang databases from their inception to September 9, 2024. Eligible studies included randomized controlled trials assessing the effects of forced-air warming on intraoperative body temperature and related outcomes. Review Manager 5.4.1 (The Cochrane Collaboration) and Stata 15.1 (StataCorp) softwares were used for the meta-analysis. Standardized mean differences (SMDs) and odds ratios (ORs) were calculated with 95% confidence intervals (CIs). The quality of evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach.
Findings:
Nineteen studies involving a total of 861 patients were included. Forced-air warming significantly increased core body temperature (SMD: 0.94; 95% CI: 0.07 to 1.81; P = .03) and overall body temperature (SMD: 2.07; 95% CI: 1.28 to 2.85; P < .00001). It also significantly reduced the incidence of hypothermia (OR: 0.17; 95% CI: 0.11 to 0.26; P < .00001) and shivering (OR: 0.12; 95% CI: 0.07 to 1.03; P < .00001). According to GRADE, the evidence quality was rated very low for temperature-related outcomes but moderate for hypothermia and shivering reduction.
Conclusions:
Forced-air warming is effective in elevating core and overall body temperatures and in lowering the risks of intraoperative hypothermia and postoperative shivering in patients undergoing laparoscopic surgery. However, due to the limited quality of some included studies, further high-quality research is warranted to confirm these findings.
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