PDF(Pubmed)
Abstract：
Seasonal acclimatization is known to result in adaptations that can improve heat tolerance. Staff who operate on burn injuries are exposed to thermally stressful conditions and seasonal acclimatization may improve their thermoeffector responses during surgery. Therefore, the aim of this study was to assess the physiological and perceptual responses of staff who operate on burn injuries during summer and winter, to determine whether they become acclimatized to the heated operating theater. Eight staff members had physiological and perceptual responses compared during burn surgeries conducted in thermoneutral (CON: 24.1 ± 1.2°C, 45 ± 7% relative humidity [RH]) and heated (HOT: 31.3 ± 1.6°C, 44 ± 7% RH) operating theaters, in summer and winter. Physiological parameters that were assessed included core temperature, heart rate, total sweat loss, sweat rate, and urinary specific gravity. Perceptual responses included ratings of thermal sensation and comfort. In summer, CON compared to winter CON, baseline (85 ± 15 bpm VS 94 ± 18 bpm), mean (84 ± 16 bpm VS 93 ± 18 bpm), and peak HR (94 ± 17 bpm VS 105 ± 19 bpm) were lower (p < 0.05), whereas core temperature was not different between seasons in either condition (p > 0.05). In HOT, ratings of discomfort were higher in summer (15 ± 3) than winter (13 ± 3; p > 0.05), but ratings of thermal sensation and sweat rate were similar between seasons (p > 0.05). The surgical team in burns in Western Australia can obtain some of the physiological adaptations that result from seasonal acclimatization, but not all. That is most likely due to a lower than required amount of outdoor heat exposure in summer, to induce all physiological and perceptual adaptations.
摘要：
已知季节性适应会导致可以提高耐热性的适应。烧伤手术的工作人员暴露于热应力条件下，季节性适应可能会改善手术期间的热效应反应。因此,这项研究的目的是评估在夏季和冬季进行烧伤手术的工作人员的生理和知觉反应，以确定他们是否适应加热手术室。在热中性进行的烧伤手术中，八名工作人员的生理和知觉反应进行了比较（CON：24.1±1.2°C，45±7％相对湿度[RH]）并加热（HOT：31.3±1.6°C，44±7%RH)手术室，在夏天和冬天。评估的生理参数包括核心温度，心率,总出汗量,出汗率,和尿比重。感知反应包括热感觉和舒适度的评级。在夏天,CON与冬季CON相比，基线（85±15bpmVS94±18bpm），平均值（84±16bpmVS93±18bpm），和峰值HR（94±17bpmVS105±19bpm）较低（p<0.05），而在两种情况下，不同季节的核心温度没有差异(p>0.05)。在热,夏季（15±3）的不适评分高于冬季（13±3；p>0.05），但季节之间的热感觉和出汗率等级相似（p>0.05）。西澳大利亚州的烧伤手术团队可以获得一些因季节性适应而导致的生理适应，但不是全部。这很可能是由于夏季室外热暴露量低于要求，诱导所有的生理和知觉适应。
