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Body temperature evaluation during induced pneumoperitoneum with CO 2: An experimental study in pigs

机译：CO 2诱发气腹的体温评估：猪的实验研究

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Background In prolonged laparoscopic procedures, hypothermia is frequently observed. The possible influence of the vasodilating action of CO 2, due to its increased levels in the blood during the laparoscopic procedures, has yet to be studied. The objective of this study was, therefore, to evaluate body temperature patterns in pigs subjected to pneumoperitoneum with CO 2. Methods Thirty male pigs were allocated into three groups of ten animals each: group I, anesthetic procedure and abdominal puncture only; group II, the same as for group I and insufflation with CO 2; and group III, the same as for group I and insufflation with medical grade compressed air. After anesthetic induction and surgical preparation, rectal and esophageal temperatures were measured every 10 min. Blood was collected during the experiment for the gasometric measurement of pCO 2. Animals were insufflated with no gas loss and were kept anesthetized for 180 min. For statistical analysis, Friedman and Kruskal-Wallis tests were used at a level of significance of 95% (P0.05). Results Animals in groups I and II (P = 0.000) had a statistically significant drop in both esophageal and rectal temperatures during the experiment, but not animals in group III. However, when the groups were compared among themselves, no statistically significant differences were found at any of the times measured. A statistically significant drop in pCO 2 levels was observed for groups I and III, but not for animals in groups II. Conclusions The use of CO 2 did not significantly affect body temperature variation in pigs subjected to pneumoperitoneum. However, CO 2 produced a temperature drop pattern different than that of compressed air, indicating that CO 2 may lead to thermoregulatory changes and influence the peripheral temperature drop.
机译：背景技术在长时间的腹腔镜手术中，经常观察到体温过低。由于腹腔镜手术期间CO 2在血液中水平的升高，其血管舒张作用的可能影响尚待研究。因此，本研究的目的是评估使用CO 2气腹的猪的体温模式。方法将30只雄性猪分为三组，每组十只动物：第一组，麻醉程序和仅穿刺穿刺动物;第二组仅进行麻醉。第二组，与第一组相同，并注入CO 2;和第三组，与第一组相同，并注入医用级压缩空气。麻醉诱导和手术准备后，每10分钟测量一次直肠和食道温度。在实验期间收集血液用于pCO 2的胃功能测定。将动物吹入气体，且不损失气体，并保持麻醉180分钟。为了进行统计分析，使用了Friedman和Kruskal-Wallis检验，显着性水平为95％（P <0.05）。结果实验期间，I和II组的动物（P = 0.000）的食管和直肠温度均有统计学显着下降，而III组没有。但是，将各组之间进行比较时，在任何测量时间均未发现统计学上的显着差异。 I组和III组观察到pCO 2水平有统计学意义的下降，而II组动物没有观察到。结论使用CO 2不会显着影响气腹猪的体温变化。但是，CO 2产生的温度下降模式与压缩空气不同，表明CO 2可能导致温度调节变化并影响周围温度下降。

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