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Stylet angulation for routine endotracheal intubation with McGrath videolaryngoscope

Lee, J  | Kim, JY  | Kang, SY | Kwak, HJ | Lee, D | Lee, SY
Medicine, 96(7). : e6152-e6152, 2017
Journal Title
BACKGROUND: The McGrath videolaryngoscope (VL) provides excellent laryngoscopic views, but directing an endotracheal tube can be difficult, and thus the routine use of a stylet is recommended. The goal of this study is to determine the appropriate angle (60 degrees vs 90 degrees ) of the stylet when using the McGrath VL by comparing the time to intubation (TTI).
METHODS: One hundred and forty patients aged 19 to 70 years (American Society of Anesthesiologists classification I or II) who required tracheal intubation for elective surgery were randomly allocated to 1 of 2 groups, at the 60 degrees angle (n = 70) or the 90 degrees angle (n = 70). Anesthesia was induced with propofol, fentanyl, and rocuronium. The primary outcome was TTI assessed by a blind observer. Glottic grade, use of optimal external laryngeal manipulation, failed intubation at first attempt, ease of intubation, and severity of oropharyngeal bleeding were also recorded.
RESULTS: The mean TTI was significantly shorter in the 60 degrees group than in the 90 degrees group (29.3 +/- 6.4 vs 32.5 +/- 9.4 s, P = 0.022). The glottic grade and degree of intubation difficulty were not significantly different between the 2 groups.
CONCLUSIONS: When intubating the patients with the McGrath videolaryngoscope, the 60 degrees angled stylet allowed for faster orotracheal intubation than did the 90 degrees angled stylet.

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Journal Papers > School of Medicine / Graduate School of Medicine > Anesthesiology & Pain Medicine
Ajou Authors
김, 종엽  |  이, 숙영  |  이, 지영
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