scholarly journals Effects of 10-min prewarming on core body temperature during gynecologic laparoscopic surgery under general anesthesia: a randomized controlled trial

2020 ◽  
Vol 15 (3) ◽  
pp. 349-355
Author(s):  
So Young Lee ◽  
Soo Jin Kim ◽  
Jin-Yong Jung
Keyword(s):  
Laparoscopic Surgery ◽  
Primary Outcome ◽  
Core Body Temperature ◽  
Controlled Trial ◽  
Operating Table ◽  
Temperature Changes ◽  
Forced Air Warming ◽  
Forced Air ◽  
Core Body ◽  
Warming Device

Background: Previous research has shown a beneficial effect of prewarming for preventing inadvertent perioperative hypothermia. However, there are few studies of the effects of a short prewarming period, especially in gynecologic laparoscopic surgery. Methods: Fifty-four patients were randomly assigned to 2 groups. Patients in the non-prewarming group were only warmed intraoperatively with a forced air warming device, while those in the prewarming group were warmed for 10 min before anesthetic induction and during the surgery. The primary outcome was incidence of intraoperative hypothermia.Results: Intraoperative hypothermia was observed in 73.1% of the patients in the non-prewarming group and 24% of the patients in the prewarming group (P < 0.001). There were significant differences in core temperature changes between the groups (P < 0.001). Postoperative shivering occurred in 8 of the 26 (30.8%) patients in the non-prewarming group and in 1 of the 25 (4.0%) patients in the prewarming group (P = 0.024).Conclusions: Forced air warming for 10 min before induction on the operating table combined with intraoperative warming was an effective method to prevent hypothermia in patients undergoing gynecologic laparoscopic surgery.

Effect of Pre-warming on Reducing the Incidence of Inadvertent Peri-operative Hypothermia for Patients Undergoing General Anaesthesia: A Mini-review

2013 ◽  
Vol 14 (1-2) ◽  
pp. 3-10 ◽  
Author(s):  
Lucie Llewellyn
Keyword(s):  
General Anaesthesia ◽  
Randomised Controlled Trials ◽  
Reference Lists ◽  
Core Body Temperature ◽  
Potential Temperature ◽  
Forced Air Warming ◽  
Clinically Significant ◽  
Forced Air ◽  
Randomised Controlled ◽  
Core Body

AbstractObjective:This mini-review aims to assess the effect pre-warming has on reducing the incidence of inadvertent peri-operative hypothermia for patients undergoing general anaesthesia.Method:A search of the MEDLINE and EMBASE databases, as well as hand-searching through the reference lists of key articles, was undertaken. Articles were included on the basis that the studies were randomised controlled trials, undertaken on patients who were undergoing surgery under general anaesthesia and were pre-warmed for 60 minutes using forced-air warming systems. This resulted in two articles being critically appraised and reviewed using guidelines based on those given in Greenhalgh and Donald (2000).Findings:The results for both of these studies showed that statistically significant differences were seen in core body temperature, with analysis of variance used to test for the significant differences between the sample means. The findings were also clinically significant, as a small drop in temperature as a result of anaesthesia and surgery can lead to IPH, and with pre-warming this can be avoided.Conclusion:The studies that were used in this review both reported that pre-warming patients for 60 minutes pre-operatively had both a statistically significant and clinically significant effect. This means that patients should receive a period of pre-warming before surgery in addition to being warmed peri-operatively, in order to reduce any drop in potential temperature that can lead to IPH.

scholarly journals 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

2022 ◽  
Author(s):  
Wenchao Yin ◽  
Qihai Wan ◽  
Haibin Jia ◽  
Xue Jiang ◽  
Chunqiong Luo ◽  
...  
Keyword(s):  
Core Body Temperature ◽  
Randomized Study ◽  
Shoulder Surgery ◽  
Forced Air Warming ◽  
Significant Difference ◽  
Registration Number ◽  
Arthroscopic Shoulder Surgery ◽  
Clinically Significant ◽  
Forced Air ◽  
Core Body

Abstract 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 core body temperature (CBT) 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 CBT 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 CBT. However, the CBT still decreased in UB group until 75 minutes, with a low of 35.7℃ ± 0.4℃. Then the CBT increased mildly and reached 35.8℃ ± 0.4℃ at 90 minutes. After 45 minutes of warming, the CBT 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 CBT was significantly better when the underbody FAW blanket was placed over patients compared with under the patients. However, there was not a clinically significant difference in CBT. 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.

Core body temperature changes after sauna exposition in healthy subjects

2012 ◽  
Vol 26 (2) ◽  
Author(s):  
Joanna Pawlak ◽  
Paweł Zalewski ◽  
Jacek J. Klawe ◽  
Monika Zawadka ◽  
Anna Bitner ◽  
...  
Keyword(s):  
Body Temperature ◽  
Healthy Subjects ◽  
Core Body Temperature ◽  
Temperature Changes ◽  
Core Body

Comparison of two forced-air warming devices during foot and ankle surgery: a randomised controlled trial

2020 ◽  
Vol 30 (11) ◽  
pp. 340-344
Author(s):  
Jorge Javier Del Vecchio ◽  
Lucas Nicolás Chemes ◽  
Mauricio Esteban Ghioldi ◽  
Eric Daniel Dealbera ◽  
Pablo Daniel Morgillo
Keyword(s):  
Controlled Trial ◽  
Foot And Ankle ◽  
Air Heating ◽  
Forced Air Warming ◽  
Ankle Surgery ◽  
Forced Air ◽  
Randomised Controlled ◽  
Warming Devices ◽  
Frequent Problem ◽  
Uniform Population

Inadvertent perioperative hypothermia is a frequent problem associated with surgical patients which can have significant consequences during surgery and in the immediate postoperative period. We compared 35 randomised patients using over vs. under body forced air heating. There were no statistically significant differences between some demographic and surgical parameters such as: age, weight, height, body mass index, length of anaesthesia and operation. Statistically significant differences were found between the patient’s admission to the operating room and 30 minutes and the end of the procedure on the under body patients group. This study analyses a uniform population of patients (Foot and Ankle Surgery) previously not studied and supports the use of under body blankets.

A Guideline-Based Policy to Decrease Intensive Care Unit Admission Rates for Accidental Hypothermia

2017 ◽  
Vol 35 (1) ◽  
pp. 91-94 ◽  
Author(s):  
Herman R. Sequeira ◽  
Hesham E. Mohamed ◽  
Neal Hakimi ◽  
Dorothy B. Wakefield ◽  
Jonathan Fine
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Policy Change ◽  
Alcohol Intoxication ◽  
Accidental Hypothermia ◽  
Policy Intervention ◽  
Forced Air Warming ◽  
Passive Rewarming ◽  
Forced Air ◽  
Warming Device

Rationale: Despite guidelines advising passive rewarming for mild accidental hypothermia (AH), patients are frequently admitted to intensive care unit (ICU) for active rewarming using a forced-air warming device. We implemented a new policy at our institution aimed at safely reducing ICU admissions for AH. We analyzed our practice pre- and post-policy intervention and compared our experiences with acute care hospitals in Connecticut. Methods: A retrospective chart review was performed on 203 participants with AH identified by primary and secondary discharge codes. Our new policy recommended passive rewarming on the medical floors for mild hypothermia (>32°C) and ICU admission for moderate hypothermia (<32°C). Practices of other Connecticut hospitals were obtained by surveying ICU nurse managers and medical directors. Results: Over a 3-year period, prior to rewarming policy change, 64% (n = 92) of patients with AH were admitted to ICU, with a mean ICU length of stay (LOS [SD]) of 2.75 (2.2) days. After the policy change, over a 3-year period, 15% (n = 9) were admitted to ICU ( P < .001), with an ICU LOS of 2.11 (0.9) days ( P = 0.005). In both groups with AH, altered mental status, infection, and acute alcohol intoxication were the most common diagnoses at presentation. Alcohol intoxication was more prevalent in the post-policy intervention group, pre 17% versus post 46% ( P < .001). No complications such as dermal burns or cardiac arrhythmias were noted with forced-air warming device use during either time period. Among the 29 hospitals surveyed, 20 used active rewarming in ICU or intermediate care units and 9 cared for patients on telemetry units. Most hospitals used active external rewarming for core body temperature of <35°C; however, 37% of hospitals performed active rewarming at temperatures >35°Cor lacked a policy. Conclusions: Reserving forced-air warming devices for the treatment of moderate-to-severe hypothermia (<32°C) significantly reduced ICU admissions for AH.

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