套囊过度充气致气管导管堵塞：病例报告及实验研究。
Cuff overinflation and endotracheal tube obstruction: case report and experimental study.
机构信息
Clinic of Anesthesiology, Intensive Care Medicine, and Pain Therapy, J.W. Goethe-University Hospital Frankfurt, Germany.
出版信息
Scand J Trauma Resusc Emerg Med. 2010 Apr 8;18:18. doi: 10.1186/1757-7241-18-18.
BACKGROUND
Initiated by a clinical case of critical endotracheal tube (ETT) obstruction, we aimed to determine factors that potentially contribute to the development of endotracheal tube obstruction by its inflated cuff. Prehospital climate and storage conditions were simulated.
METHODS
Five different disposable ETTs (6.0, 7.0, and 8.0 mm inner diameter) were exposed to ambient outside temperature for 13 months. In addition, every second of these tubes was mechanically stressed by clamping its cuffed end between the covers of a metal emergency case for 10 min. Then, all tubes were heated up to normal body temperature, placed within the cock of a syringe, followed by stepwise inflation of their cuffs to pressures of 3 kPa and > or =12 kPa, respectively. The inner lumen of the ETT was checked with the naked eye for any obstruction caused by the external cuff pressure.
RESULTS
Neither in tubes that were exposed to ambient temperature (range: -12 degrees C to +44 degrees C) nor in those that were also clamped, visible obstruction by inflated cuffs was detected at any of the two cuff pressure levels.
CONCLUSIONS
We could not demonstrate a critical obstruction of an ETT by its inflated cuff, neither when the cuff was over-inflated to a pressure of 12 kPa or higher, nor in ETTs that had been exposed to unfavorable storage conditions and significant mechanical stress.
背景
我们从一个危急的气管内导管（ETT）充气套囊阻塞的临床病例出发，旨在确定充气套囊阻塞气管内导管的潜在因素。模拟了院前的气候和储存条件。
方法
将 5 个不同的一次性 ETT（内径 6.0、7.0 和 8.0 毫米）暴露于环境外温度下 13 个月。此外，每隔一个 ETT 的充气套囊端被夹在金属急救箱的盖子之间，进行 10 分钟的机械压力，对这些 ETT 中的每一个进行机械施压。然后，所有 ETT 都加热至正常体温，放置在注射器的阀杆内，然后逐步将其充气套囊充气至 3 kPa 和>或=12 kPa 的压力。用肉眼检查 ETT 的内腔，看充气套囊的外部压力是否造成任何阻塞。
结果
无论是在暴露于环境温度（范围：-12°C 至+44°C）的 ETT 中，还是在那些被夹住的 ETT 中，在这两种套囊压力水平下，都没有发现充气套囊造成的明显阻塞。
结论
我们无法证明充气套囊会导致 ETT 出现危急的阻塞，无论是在套囊被过度充气至 12 kPa 或更高的压力，还是在暴露于不利的储存条件和显著的机械压力的 ETT 中。
Zotero 插件