Optimal Application of Forced Air Warming to Prevent Peri-Operative Hypothermia during Abdominal Surgery: A Systematic Review and Meta-Analysis

Lee, Yoonyoung; Kim, Kisook

doi:10.3390/ijerph18052517

Cited by 9 publications

(3 citation statements)

References 40 publications

(17 reference statements)

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“…[30] On the other hand, former studies conducted by Nieh et al and Lee et al mentioned in their meta-analysis that forcedair-warming provided a superior protective effect against the incidence of hypothermia than the other passive warming systems. [32,33] Furthermore, a previous study suggested that airforced warming systems may contribute to lowering the risk of intraoperative and postoperative complications such as blood loss, and site infection. [34] In contrast, our findings showed no statistical difference between the 2 groups in terms of the incidence of hypothermia.…”

Section: Discussionmentioning

confidence: 99%

Self-warming blankets versus active warming by forced-air devices for preventing hypothermia: A systematic review and meta-analysis

et al. 2023

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Background: Unintended perioperative hypothermia is a significant complication for patients undergoing anesthesia. Different measures are routinely undertaken to prevent hypothermia and its consequences. The evidence comparing the impact of self-warming blankets and forced-air warming is scarce. Therefore, this meta-analysis aimed to evaluate the efficacy of self-warming blankets compared to forced-air devices regarding the incidence of perioperative hypothermia. Methods: We searched the Web of Science, Cochrane Central Register of Controlled Trials, PubMed, and Scopus for relevant studies from inception until December 2022. We included comparative studies with patients allocated to undergo warming using a self-warming blanket or forced air warming. All concerned outcomes were pooled as odds ratios or mean differences (MDs) in the meta-analysis models using Review Manager (RevMan version 5.4). Results: Our results from 8 studies (597 patients) favored self-warming blankets over forced-air devices in terms of core temperature at 120 and 180 minutes after induction of general anesthesia (MD = 0.33, 95% confidence interval [CI] [0.14–0.51], P = .0006), (MD = 0.62, 95% CI [0.09–1.14], P = .02), respectively. However, the overall effect did not favor either of the 2 groups for the incidence of hypothermia (odds ratio = 0.69, 95% CI [0.18–2.62]). Conclusion: Ultimately, self-warming blankets have a more significant effect than forced-air warming systems in terms of maintaining normothermia of core temperature after induction anesthesia. However, the present evidence is not enough to verify the efficacy of the 2 warming techniques in the incidence of hypothermia. Further studies with large sample sizes are recommended.

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Section: Discussionmentioning

confidence: 99%

Self-warming blankets versus active warming by forced-air devices for preventing hypothermia: A systematic review and meta-analysis

et al. 2023

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“…From the timeline visualization, we can nd that forced-air warming received great attention from 2013 and is still active. It is e cient and convenient, and recommended to be actively used in clinical practice [21][22][23]. Regarding to the warming period, some evidence suggests that extending systemic warming to the preoperative period could be more bene cial than limiting it only to during surgery [24][25][26].…”

Section: Discussionmentioning

confidence: 99%

Hot spots and trends in inadvertent perioperative hypothermia: a bibliometric and visualized study

yanyan

Xue

et al. 2023

Preprint

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Purpose: Inadvertent perioperative hypothermia (IPH) is a common complication of anesthesia and surgical exposure. Although considerably increased attention has been paid to the role of IPH over the past decades, a systematical bibliometric analysis on this topic has not yet been performed. This study aimed to investigate current research hotspot and predict future trends in IPH research using bibliometric analysis. Methods: The relevant literatures published from 2000 to 2022 were identified and selected from the Science Citation Index Expanded of Web of Science Core Collection (WoSCC). The VOSviewer and CiteSpace software were used to perform collaboration network analysis, co-citation analysis, co-occurrence analysis, and citation burst detection. Results: 1685 publications (1450 articles and 235 reviews) from WoSCC were used for analysis and visualization. The United States has made the largest contribution in this field, with most publications (535, 31.8%), and closely collaborations with China and Canada. The most productive institution and scholar in this field were University of Sao Paulo (30, 1.8%) and Professor Braeuer (19, 1.13%), respectively. Anesthesia and Analgesia was the most productive journal. The top ten keywords based on the co-occurrence analysis are “hypothermia”, “cardiopulmonary bypass”, “body temperature, “anesthesia”, “surgery”, “cardiac surgery”, “damage control surgery”, “perioperative hypothermia”, “trauma”, “bleeding”. The emerging research hotspot might be “active warming “, “prewarming”, and “forced-air warming”. Conclusion: This study analyzed the IPH using bibliometric and visual analysis. These results provide an instructive perspective on the current research and future directions and give a potential foundation for further research and clinical applications.

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“…We only compared the warming effects of two different placements of full access underbody FAW blankets. Over-body and upper body FAW blankets were not used in our study, although the upper body blanket is preferred in clinics [ 31 ] and has been validated to be more effective than lower body blankets in patients in the lateral decubitus position [ 32 ]. However, the full access blanket can cover a much greater area than the upper body blanket in arthroscopic shoulder surgery [ 18 ], and its warming effects are better in theory.…”

Section: Discussionmentioning

confidence: 99%

Comparison of two different uses of underbody forced-air warming blankets for the prevention of hypothermia in patients undergoing arthroscopic shoulder surgery: a prospective randomized study

et al. 2022

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Background Forced-air warming (FAW) is an effective method of preventing inadvertent perioperative hypothermia (IPH). However, its warming effects can be influenced by the style and position of the FAW blanket. This study aimed to compare the effects of underbody FAW blankets being placed under or over patients in preventing IPH. Methods Patients (n=100) undergoing elective arthroscopic shoulder surgery in the lateral decubitus position were randomized into either under body (UB) group or the over body (OB) group (50 per group). The body temperature of the patients was recorded from baseline to the end of anesthesia. The incidences of postoperative hypothermia and shivering were also collected. Results A steady decline in the body temperature was observed in both groups up to 60 minutes after the start of FAW. After 60 minutes of warming, the OB group showed a gradual increase in the body temperature. However, the body temperature still decreased in UB group until 75 minutes, with a low of 35.7℃ ± 0.4℃. Then the body temperature increased mildly and reached 35.8℃ ± 0.4℃ at 90 minutes. After 45 minutes of warming, the body temperature between the groups was significantly different (P < 0.05). The incidence of postoperative hypothermia in the UB group was significantly higher than that in the OB group (P = 0.023). Conclusions The body temperature was significantly better with the use of underbody FAW blankets placed over patients than with them placed under patients. However, there was not a clinically significant difference in body temperature. The incidence of postoperative hypothermia was much lower in the OB group. Therefore, placing underbody FAW blankets over patients is recommended for the prevention of IPH in patients undergoing arthroscopic shoulder surgery. Trial registration This single-center, prospective, RCT has completed the registration of the Chinese Clinical Trial Center at 13/1/2021 with the registration number ChiCTR2100042071. It was conducted from 14/1/2021 to 30/10/2021 as a single, blinded trial in Sichuan Provincial Orthopedic Hospital.

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Optimal Application of Forced Air Warming to Prevent Peri-Operative Hypothermia during Abdominal Surgery: A Systematic Review and Meta-Analysis

Cited by 9 publications

References 40 publications

Self-warming blankets versus active warming by forced-air devices for preventing hypothermia: A systematic review and meta-analysis

Self-warming blankets versus active warming by forced-air devices for preventing hypothermia: A systematic review and meta-analysis

Hot spots and trends in inadvertent perioperative hypothermia: a bibliometric and visualized study

Comparison of two different uses of underbody forced-air warming blankets for the prevention of hypothermia in patients undergoing arthroscopic shoulder surgery: a prospective randomized study

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