Department of Anesthesia and Perioperative Medicine, London Health Sciences Centre-University Hospital, Room C3-110, 339 Windermere Road, London, ON N6A 5A5, Canada.
Can J Anaesth. 2011 Mar;58(3):256-61. doi: 10.1007/s12630-010-9440-z. Epub 2010 Dec 17.
A stylet is usually necessary when using the GlideScope(®) videolaryngoscope for orotracheal intubation. A special stylet, the GlideRite(®) Rigid Stylet (GRS), was designed for this purpose. A previous trial involving experienced operators showed that the GRS offered no performance improvement vs a standard malleable stylet (SMS). In our trial, we compared the performance of the GRS with that of the SMS in terms of time to intubation and ease of intubation when used by novice GlideScope(®) operators.
Sixty patients with normal-appearing airways requiring orotracheal intubation for elective surgery were randomly allocated to be intubated by novice operators with the GlideScope(®), using either the GRS or the SMS. Time to intubation was assessed by a blinded observer, and the operators were blinded until just prior to tracheal intubation. Ease of intubation was assessed by a five-point ordinal scale (from 1- easy to 5 -difficult). Intubation attempts/failures, glottic grades, and usage of external laryngeal manipulation were recorded.
There were no significant differences between the GRS and the SMS in terms of the median time to intubation (60 sec, interquartile range [IQR] 48-75 vs 61 sec, IQR 49-75, respectively; P = 0.94) and the ease of intubation (GRS median score: 1.5, IQR 1-2 vs SMS median score: 1, IQR 1-2; P = 0.94). There were no other significant differences between groups.
The GRS and the SMS have similar performance characteristics when used by novice operators for GlideScope(®)-assisted orotracheal intubation. (Registered at ClinicalTrials.gov: NCT00884754).
在使用 GlideScope（®）视频喉镜进行经口气管插管时，通常需要使用管芯。为此，专门设计了一种特殊的管芯，即 GlideRite（®）刚性管芯（GRS）。一项涉及经验丰富的操作人员的先前试验表明，与标准的可弯曲管芯（SMS）相比，GRS 并未提高性能。在我们的试验中，我们比较了 GRS 和 SMS 在使用新手 GlideScope（®）操作者时插管时间和插管难易程度方面的性能。
60 例气道外观正常的患者需要在择期手术中经口气管插管，随机分配由新手 GlideScope（®）操作者使用 GRS 或 SMS 进行插管。由盲法观察者评估插管时间，操作者在进行气管插管前才获知盲法分组情况。使用 5 分制 ordinal 量表（1 分表示容易，5 分表示困难）评估插管的难易程度。记录插管尝试/失败次数、声门分级和外部喉部操作的使用情况。
GRS 和 SMS 在插管时间的中位数（60 秒，四分位距 [IQR] 48-75 与 61 秒，IQR 49-75；P=0.94）和插管难易程度（GRS 中位数评分：1.5，IQR 1-2 与 SMS 中位数评分：1，IQR 1-2；P=0.94）方面均无显著差异。两组之间也没有其他显著差异。
在新手使用 GlideScope（®）辅助经口气管插管时，GRS 和 SMS 的性能特征相似。（在 ClinicalTrials.gov 注册：NCT00884754）。
