• Jiyoung Lee, Jong Yeop Kim, Se Yoon Kang, Hyun Jeong Kwak, Dongchul Lee, and Sook Young Lee.
• aDepartment of Anesthesiology and Pain Medicine, Ajou University School of Medicine, Suwon bDepartment of Anesthesiology and Pain Medicine, Gachon University, Gil Medical Center, Incheon, Korea.
• Medicine (Baltimore). 2017 Feb 1; 96 (7): e6152.

BackgroundThe 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° vs 90°) of the stylet when using the McGrath VL by comparing the time to intubation (TTI).MethodsOne 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° angle (n = 70) or the 90° 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.ResultsThe mean TTI was significantly shorter in the 60° group than in the 90° 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.ConclusionsWhen intubating the patients with the McGrath videolaryngoscope, the 60° angled stylet allowed for faster orotracheal intubation than did the 90° angled stylet.

19 keywords...

hide…