Lateral intubation with the Macintosh laryngoscope and C-MAC D blade videolaryngoscope (LATIN): A randomized controlled trial

IF 1.9 Q2 MEDICINE, GENERAL & INTERNAL

Journal of Taibah University Medical Sciences Pub Date : 2026-04-01 Epub Date: 2026-04-08 DOI:10.1016/j.jtumed.2026.03.010

Renjith Viswanath MD , Sryma PB DM , Ganesan C MD , Ganga Reghupathy MBBS

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引用次数: 0

Abstract

Background and aims

Lateral intubation is frequently encountered outside operating room settings, particularly for endoscopic procedures. Challenges faced by anesthesiologists include a lack of training and experience in performing intubation in the lateral position, and the paucity of data regarding the ideal method. This study was aimed at comparing the glottis visualization times and intubation times with Macintosh laryngoscopes and C-MAC D blade video laryngoscopes in American Society of Anesthesiologists (ASA) 1 and 2 patients without any risk factors for difficult airway, in the right lateral decubitus position.

Materials and methods

The primary outcome was glottis visualization time. Secondary outcomes included intubation time, bougie use, intubation difficulty score, use of external laryngeal pressure, number of operators required, and complications. All intubators were trained experienced operators trained in lateral intubation on mannequins. Clinical trial registration is available at https://ctri.nic.in/Clinicaltrials/login.php, ID: CTRI/2024/06/068243.

Results

This randomized controlled trial included 62 patients, 31 per group, undergoing elective procedures under general anesthesia and requiring endotracheal intubation. The patients were able to be intubated in the lateral position with a success rate of 96.8%. The mean glottis visualization time was 7.9 ± 3.1 s in the Macintosh (M) group (n = 32) and 6.8 ± 3.1 s in the C-MAC D blade (C) group (n = 29), and did not significantly differ between groups (p = 0.14). The intubation time was 7.5 ± 5 s (n = 31) in group M and 6 ± 3.5 s (n = 29) in group C, and did not significantly differ between groups (p = 0.61). No major complications were observed.

Conclusion

Both Macintosh and C-MAC D blade laryngoscopes can be effectively used by trained clinicians for intubation in the lateral position.

Registration details

Clinical trial registration is available at https://ctri.nic.in/Clinicaltrials/login.php, ID: CTRI/2024/06/068243.

查看原文本刊更多论文

Macintosh喉镜和C-MAC D刀片式视频喉镜（拉丁文）的侧位插管：一项随机对照试验

背景和目的在手术室外经常遇到侧置插管，特别是内窥镜手术。麻醉师面临的挑战包括缺乏侧卧位插管的培训和经验，以及缺乏关于理想方法的数据。本研究旨在比较美国麻醉学会（ASA） 1、2例无任何危险因素气道困难患者右侧侧卧位声门显像次数和插管次数与Macintosh喉镜和C-MAC D片视频喉镜。材料与方法主要观察指标为声门显像时间。次要结果包括插管时间、导管使用、插管困难评分、喉外压使用、所需操作人员数量和并发症。所有的插管者都是经过培训的经验丰富的操作人员，在人体模型上进行了侧置插管训练。临床试验注册网站：https://ctri.nic.in/Clinicaltrials/login.php, ID: CTRI/2024/06/068243。结果该随机对照试验包括62例患者，每组31例，在全身麻醉下接受选择性手术并需要气管插管。患者侧位插管成功率为96.8%。Macintosh (M)组平均声门显像时间为7.9±3.1 s (n = 32), C- mac D (C)组平均声门显像时间为6.8±3.1 s (n = 29)，两组间差异无统计学意义（p = 0.14）。M组插管时间为7.5±5 s (n = 31)， C组为6±3.5 s (n = 29)，两组间差异无统计学意义（p = 0.61）。无重大并发症。结论经培训的临床医生可有效地使用Macintosh和C-MAC D刀片喉镜进行侧位插管。临床试验注册网站：https://ctri.nic.in/Clinicaltrials/login.php, ID: CTRI/2024/06/068243。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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