Liu E H C, Goy R W L, Chen F G
Department of Anaesthesia, Yong Loo Lin School of Medicine, National University of Singapore, 5 Lower Kent Ridge Road, Singapore 119074.
Br J Anaesth. 2006 Mar;96(3):396-400. doi: 10.1093/bja/ael001. Epub 2006 Jan 16.
The LMA CTrach is a new laryngeal mask system consisting of an LMA CTrach Airway with integrated fibreoptic channels, and a detachable LMA CTrach Viewer. This system enables viewing of the larynx and aids endotracheal intubation through a laryngeal mask airway. Method. We used and evaluated this system in 100 adult patients undergoing general anaesthesia for elective surgery. Our primary outcomes were the success rates of LMA CTrach Airway insertion and endotracheal intubation with this system.
We were able to insert the LMA CTrach Airway in and to ventilate all 100 patients. We were successful in endotracheal intubation, either under vision or blind, in 96 patients. We were able to view the larynx in 84 patients, but the quality of the best view obtained was very variable. The median (inter quartile range) time for the complete intubation process was 166 (114-233) s. The system allowed nearly continuous ventilation and oxygenation during the process.
The LMA CTrach system has potential advantages over the LMA Fastrach system, including the ability to align the LMA outlet with the larynx and a high first intubation attempt success rate. However, it was difficult to view the larynx with the LMA CTrach compared with direct laryngoscopy, and expectations must be moderated.
LMA CTrach是一种新型喉罩系统，由带有集成光纤通道的LMA CTrach气道和可拆卸的LMA CTrach喉镜组成。该系统能够观察喉部，并通过喉罩气道辅助气管插管。方法：我们在100例接受择期手术全身麻醉的成年患者中使用并评估了该系统。我们的主要结局是使用该系统插入LMA CTrach气道和气管插管的成功率。
我们成功地为所有100例患者插入了LMA CTrach气道并进行了通气。96例患者在直视或盲视下成功完成气管插管。84例患者能够观察到喉部，但获得的最佳视野质量差异很大。整个插管过程的中位（四分位间距）时间为166（114 - 233）秒。该系统在插管过程中允许近乎持续的通气和给氧。
LMA CTrach系统相对于LMA Fastrach系统具有潜在优势，包括能够使LMA出口与喉部对齐以及首次插管尝试成功率高。然而，与直接喉镜检查相比，使用LMA CTrach观察喉部较为困难，因此预期必须适度。
