PURPOSE
This study aimed to evaluate effects of heated-humidified anesthetic gas on body temperature, acid-base balance, blood cortisol, and lymphocyte in the elderly patients with colorectal cancer during laparoscopic surgery.
METHODS
This study utilized an experimental design with a randomized controlled trial. A total of 60 patients with colorectal cancer were randomly assigned to one of two groups: either to the heated-humidified anesthetic gas group or to the usual anesthetic gas group. The following variables were measured: body temperature, acid-base balance, blood cortisol, and lymphocyte. The data were analyzed with independent t-test, χ2 test, ANCOVA, and repeated ANOVA using SPSS/WIN 20.0.
RESULTS
There was a significant difference in body temperature between the experimental group and the control group during laparoscopic surgery (F=41.18, p < .001). However, no statistically significant differences were found in acid-base balance, blood cortisol, and lymphocyte between two groups.
CONCLUSION
In this study, the body temperature during laparoscopic surgery was more effectively maintained with the heated-humidified anesthetic gas compared with the regular anesthetic gas. Therefore, the heated-humidified anesthetic gas might be considered to maintain the body temperature during laparoscopic surgery especially in the elderly population.

Citations

• Living experiences of older patients with cancer amid the COVID-19 pandemic: A phenomenological study
  Yong Hwan Hyeon, Kyoung Ja Moon
  Journal of Korean Gerontological Nursing.2024; 26(1): 54.     CrossRef

PURPOSE
This study utilized a randomized block-design for the purpose of studying the effect of dialysate temperature on blood pressure (BP), core temperature, and physical symptoms in hemodialysis patients. The sample was thirty-one patients undergoing hemodialysis assigned to one of three groups. were divided into 3 groups.
METHODS
Repeated analysis of variance to number of hypotension occurrences, core temperature changes, and physical symptoms at cool dialysis with dialysate of 35.5℃, standard dialysis with dialysate of 36.5℃ and isothermic dialysis based on blood temperature feedback monitor (BTM). Each of the three groups underwent hemodialysis six times at a specific dialysate temperature.
RESULTS
The number of hypotension events were 21 at cool dialysis, 47 at standard dialysis, and 27 at isothermic dialysis, occurrences under cool dialysis were less frequent than under standard dialysis (F=8.08, p=.002). The patients' core temperature increased by 0.07℃ at cool dialysis, 0.21℃ at standard dialysis, and 0.18℃ at isothermic dialysis, cool dialysis showed a significantly smaller increase in core temperature (F=17.76, p < .001). There was no difference in the incidence of physical symptoms related to dialysate temperatures (F=2.04, p=.146).
CONCLUSION
Cool dialysis resulted in a significant prevention of the increase in core temperature and was more effective than standard dialysis in preventing hypotension. Isothermic dialysis had no positive effects in preventing the increase in core temperature or occurrences of hypotension.

PURPOSE
This study compared the effects of forced air warming and radiant heating on body temperature and shivering of patients with postoperative hypothermia.
METHODS
The quasi-experimental study was conducted with two experimental groups who had surgery under general anesthesia; 20 patients of group 1 experimented with the Bair Hugger as a forced air warming and 20 patients of group 2 experimented with the Radiant heater. The study was performed from July 3 to August 31, 2006 in a recovery room of an university hospital in a city. The effects of the experiment were measured by postoperative body temperature and chilling score at arrival and after every 10 minutes. The data were analyzed by t-test or chi-square-test, repeated measures ANCOVA using SPSS/WIN 12.0.
RESULTS
The mean body temperature showed differences between the Bair Hugger group and Radiant Heater group at 40 minutes(F=-2.579, p=.034), 50minutes(F=-2.752, p=.027), and 60 minutes(F=-2.470, p=.047) after arrival to the recovery room. So, hypothesis 1 was partially accepted. The mean score of shivering showed differences between the Bair Hugger group and the Radiant Heater group, but it had no significant meaning. Hypothesis 2 was not accepted.
CONCLUSION
We need more study to explore the effects and side effects of heating modalities to select a more effective heat treatment. The efficiency of heat modalities with regards to cost benefit, time consumption, and patients' discomfort such as burns should be considered.