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Background
Perioperative hypothermia is linked to multiple postoperative complications including increased surgical bleeding, surgical site infection, myocardial events, and increased length of hospital stay. The purpose of this study is to determine the effects of forced-air warming blanket position, above the shoulders versus under the trunk/legs...
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Objectives:
Many surgeons use uterine manipulator (UM) during laparoscopic hysterectomy (LH). In this study, we aimed to compare the outcomes of LH operations performed by using partially reusable UM with the articulated system (artUM) and disposable (dUM) UM without articulation.
Materials and methods:
A total of 99 patients underwent the LH op...
Citations
... Research on the effects of forced air warming is underway in various fields, such as the effects of differences in pre-surgical warm-up time, the effects of upper and lower body blankets, and the effectiveness of blankets in urological and abdominal surgeries. [18][19][20][21][22][23] Although the effectiveness and optimal timing of prewarming are controversial, prewarming is important for vasodilation that occurs before and after anesthesia induction, especially in older adult patients vulnerable to hypothermia. Spinal surgery involves considerable exposure of the surgical area, changes in position, and extended surgical times. ...
Objective
As the population of patients aged 65 years and older increases, the number of older adult patients undergoing surgery also increases. Older adults are vulnerable to hypothermia due to age-related changes in the thermoregulatory center, which leads to reduced subcutaneous fat tissue, vasomotor response, and heat production. Thus, they are more likely to suffer complications, including cardiovascular changes, blood coagulation disorders, infections, and delayed recovery from surgery. The study investigated the effect of preventive active warming.
Methods
This retrospective cohort study conducted at Chungbuk National University Hospital investigated clinical data from older adult patients undergoing spinal surgery from January 1, 2020, to December 13, 2022. In this study, we explored the use of prophylactic active warming during anesthesia induction and post-surgery warming in older adult patients (≥65 years) who experienced hypothermia during and after surgery under general anesthesia.
Results
The control group of patients who experienced hypothermia increased from 20% after 10 minutes to 80% after 30 minutes and 100% after 60 minutes. The percentage of patients in the treatment group who initially experienced hypothermia increased from 10% after 30 min to 40% after 60 minutes. However, notably, 90% of these patients had returned to a normal body temperature upon their arrival at the recovery room. The difference in the percentage of patients who developed hypothermia was statistically significant between the two groups.
Conclusions
Hypothermia prevention via an air-forced warming blanket was effective for older adult patients undergoing spinal surgery under general anesthesia.
... In addition, the forced air warming can prevent postoperative hypothermia and rewarm the body temperature to the normothermia status in elderly patients (Xu et al., 2019). The position of a forced air warming blanket also influences the risk of surgical site infection (Buraimoh et al., 2019). A recent study also supported the crucial role of forced air warming in improving perioperative body temperature (Xiao et al., 2020). ...
Aim
To assess if experimental warming interventions are superior to routine warming interventions in preventing perioperative hypothermia.
Background
Perioperative hypothermia is a critical issue for the complications of surgery. There are various kinds of perioperative warming interventions, including experimental and routine warming interventions.
Methods
We performed a systematic literature review and meta‐analysis for the randomized clinical trials of experimental warming interventions vs. routine warming interventions in the perioperative period.
Findings
A total of 15 studies were included with 983 participants allocated to experimental warming interventions and 939 controls with routine warming interventions, who were receiving a variety of surgeries. The focused outcome was the intraoperative and postoperative body temperature. All included studies were randomized clinical trials.
Among the participants receiving operations, the meta‐analysis showed that routine warming intervention groups experienced lower intraoperative and postoperative body temperatures compared to the experimental warming groups. The meta‐analysis results included positive mean differences, significant tests for overall effect and significant heterogeneity in the random‐effects model.
Conclusions
In spite of significant heterogeneity, experimental warming interventions are likely to demonstrate superior warming effects when compared to routine warming interventions, as shown by the current meta‐analysis results of randomized clinical trials.
... Previous studies have shown the warming effects of FAW may be affected by the FAW blanket style and position [16][17][18], and suggested that the largest blanket that is possible for the operation should be used [18]. During arthroscopic shoulder surgery, as during any other surgeries that require special surgical positioning of patients, anesthesiologists and operating room nurses prefer to place a full access FAW blanket under the patient's body rather than over it because of the ease of setup and management. ...
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.
... Studies have demonstrated that the FAW system is superior to passive insulation and any other active warming methods in preventing IPH of surgical patients [7,13] . Although FAW is an effective method to combat IPH, its effects may be affected by the FAW blanket style and position [14,15] . During arthroscopic shoulder surgery, as during any other surgeries that require special surgical positioning of patients, anesthesiologists and operating room nurses prefer to place the FAW blanket under the patient's body rather than over it because of the ease of setup and management. ...
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.
... There is a study on the difference between upper and lower body blanket warming during spine surgery in prone position. Buraimoh et al. [20] reported that no warming effect difference between the upper and lower body blanket in patients undergoing spine surgery. As a result of this study, the incidence of severe hypothermia (< 35℃) and mild to moderate hypothermia (35-36℃) in upper body blanket warming group was similar to our study (18.4%, 34.2% respectively), but the severe and mild to moderate hypothermia incidence in lower body blanket warming group was lower than ours (11.1%, 30.6% respectively). ...
Background:
We compared the upper and lower body forced-air blanket to prevent perioperative hypothermia, defined as a reduction in body temperature to <36.0°C during the perioperative period, in patients who underwent spinal surgery in prone position.
Methods:
A total of 120 patients scheduled for elective spine surgery under general anesthesia were divided into an upper warming group (n = 60) and a lower warming group (n = 60). After inducing anesthesia and preparing for the patient for surgery, including prone positioning, the upper and lower bodies of patients in the upper and lower warming groups, respectively, were warmed using a forced-air warmer with specified upper and lower blankets. Body temperature was measured using a tympanic membrane thermometer during the pre- and postoperative periods, and using a nasopharyngeal temperature probe during the intraoperative period. Patients were evaluated in terms of shivering, thermal comfort, and satisfaction in the post-anesthesia care unit (PACU).
Results:
The incidence rates of intraoperative and postoperative hypothermia were lower in the upper warming group than in the lower warming group (55.2% vs. 75.9%; P = 0.019, and 21.4% vs. 49.1%; P = 0.002). Perioperative body temperature was higher in the upper warming group (P < 0.001). However, intraoperative blood loss, postoperative thermal comfort scale and shivering scores, patient satisfaction, and PACU duration were similar between the groups.
Conclusions:
Upper body blanket was more effective in preventing perioperative hypothermia in patients who underwent spinal surgery in prone position than lower body blanket.
According to WHO, the rate of delivery by sectio caesarea is quite large, which is around 24%-30% of all childbirth processes, for developed countries such as the Netherlands it is around 9-13%. In Indonesia, the percentage is still large, which is more than 50%. Sectio caesaria surgery can cause physiological changes in the body such as a decrease in body temperature. Hypothermia affects several organ systems initially causing an increase in metabolic rate, tachycardia in the cardiovascular system, peripheral vascular resistance, causing shivering. Based on the preliminary study, 195 patients (75%). Shivering if not treated immediately will cause discomfort, shivering can also develop into serious complications. This study goals to determine the effect of an electric sand pillow on the shivering level of sectio caesarea patients after spinal anesthesia at Budhi Asih Hospital, Jakarta in 2021. The research method used is a quasi-experimentalresearch with a two-group pre-test-post-test design. The sample in this study were some post SC patients at Budhi Asih Hospital as many as 70 people, the sampling technique was purposive sampling. There was a significant difference between before and after giving the electric sand pillow (p=0.000). There is an effect of an electric sand pillow on decreasing the shivering level.
