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首页> 外文期刊>The Annals of otology, rhinology, and laryngology >Cooling the 'oven': a temperature study of air and glottal tissue during laser surgery in an ex vivo calf larynx model.
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Cooling the 'oven': a temperature study of air and glottal tissue during laser surgery in an ex vivo calf larynx model.

机译：冷却“烤箱”：在离体小牛喉模型中进行激光手术期间对空气和声门组织的温度研究。

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OBJECTIVES: Endoscopic microlaryngeal laser surgery performed with general anesthesia through a laryngoscope speculum generates heat that accumulates at the distal lumen, creating an "oven" effect and potentially causing bystander thermal damage to nontarget tissue such as the contralateral vocal fold. We report the effects of cooling on air and tissue temperatures that occurred during simulated laryngeal laser surgery with KTP and thulium lasers in an ex vivo calf model. METHODS: Ten fresh excised calf larynges were studied at room temperature. Laser energy was applied to one vocal fold for 2 minutes, with or without cooling, while temperatures were monitored with sensors placed within the glottal lumen or inserted superficially into the contralateral vocal fold. A pulsed KTP laser (525 mJ) was used for 5 larynges, and a thulium laser (7 W, continuous) was used for the other 5 larynges. RESULTS: Heating was slightly greater for the KTP laser than for the thulium laser with use of these parameters. The lumen temperatures for both lasers increased an average of 13.2 degrees C without cooling, but only 6.7 degrees C with cooling (p < 0.05). The contralateral vocal fold (subepithelial space) temperature increased an average of 6.8 degrees C without cooling, but only 4.2 degrees C with cooling (p > 0.05). CONCLUSIONS: Cooling with room-temperature air during laryngeal laser surgery reduces luminal air and contralateral vocal fold temperatures. This effect is believed to be due to elimination of the plume of steam and smoke that significantly heats surrounding structures.
机译：目的：通过喉镜窥镜在全身麻醉下进行内镜微喉激光手术会产生热量，热量会积聚在远端管腔内，产生“烤箱”效应，并可能对非目标组织（如对侧声带）造成旁观者热损伤。我们报告冷却对空气和组织温度的影响，该温度在离体小牛模型中使用KTP和th激光进行模拟喉镜激光手术期间发生。方法：在室温下研究了十只新鲜的切下小牛喉。在有或没有冷却的情况下，将激光能量施加到一个声带上2分钟，同时用放置在声门腔内或表面插入对侧声带的传感器监测温度。脉冲KTP激光（525 mJ）用于5个喉部，a激光（7 W，连续）用于其他5个喉部。结果：使用这些参数，KTP激光器的加热程度比the激光器的加热程度稍高。两种激光器的流明温度在不冷却的情况下平均增加了13.2摄氏度，但在冷却后仅增加了6.7摄氏度（p <0.05）。在不进行冷却的情况下，对侧声带（膀胱上皮空间）温度平均升高了6.8摄氏度，而在冷却后仅升高了4.2摄氏度（p> 0.05）。结论：在喉激光手术中用室温空气冷却可降低腔内空气和对侧声带折叠温度。据认为，这种效果是由于消除了蒸汽和烟雾的现象，蒸汽和烟雾明显加热了周围的结构。

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