Chao Chia Cheong, Soon Yiu Ong, Siu Min Lim, Wan Zakaria Wan A, Marzida Mansor, Sook Hui Chaw
{"title":"Partial vs full glottic view with CMAC<sup>TM</sup> D blade intubation of airway with simulated cervical spine injury: a randomized controlled trial.","authors":"Chao Chia Cheong, Soon Yiu Ong, Siu Min Lim, Wan Zakaria Wan A, Marzida Mansor, Sook Hui Chaw","doi":"10.1080/17434440.2023.2174850","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>A previous study reported a shorter time to tracheal intubation by reducing percentage of glottic opening (POGO) view to <50% when intubating a normal adult airway using the Glidescope<sup>TM</sup> blade. We evaluate the efficacy of reducing POGO to <50% when intubating patients with rigid cervical immobilization using CMAC<sup>TM</sup> D blade.</p><p><strong>Methods: </strong>One hundred and four adult patients were randomized to group POGO 100% or POGO <50% . Laryngoscopy was performed by advancing tip of the D blade at vallecula. POGO 100% was achieved by exerting upward force to displace epiglottis until glottic opening from the anterior commissure to inter arytenoid notch. POGO < 50% was acquired by withdrawing the D blade tip dorsally from vallecula. The primary outcome was time to intubation.</p><p><strong>Results: </strong>The median time (IQR) to successful intubation was 29 (25-35) seconds for group POGO < 50% and 34 (28-40) seconds for group with POGO 100% (difference in medians, 5 seconds; 95% confidence interval, 2 to 8, p = 0.003). Complications were minor.</p><p><strong>Conclusion: </strong>Using the CMAC<sup>TM</sup> D blade with a reduced POGO in patients with cervical spine immobilization resulted in faster tracheal intubation.</p><p><strong>Trial registration: </strong>The trial is registered at ClinicalTrial.gov (CT.gov identifier: NCT04833166).</p>","PeriodicalId":12330,"journal":{"name":"Expert Review of Medical Devices","volume":"20 2","pages":"151-160"},"PeriodicalIF":2.9000,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Expert Review of Medical Devices","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/17434440.2023.2174850","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, BIOMEDICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose: A previous study reported a shorter time to tracheal intubation by reducing percentage of glottic opening (POGO) view to <50% when intubating a normal adult airway using the GlidescopeTM blade. We evaluate the efficacy of reducing POGO to <50% when intubating patients with rigid cervical immobilization using CMACTM D blade.
Methods: One hundred and four adult patients were randomized to group POGO 100% or POGO <50% . Laryngoscopy was performed by advancing tip of the D blade at vallecula. POGO 100% was achieved by exerting upward force to displace epiglottis until glottic opening from the anterior commissure to inter arytenoid notch. POGO < 50% was acquired by withdrawing the D blade tip dorsally from vallecula. The primary outcome was time to intubation.
Results: The median time (IQR) to successful intubation was 29 (25-35) seconds for group POGO < 50% and 34 (28-40) seconds for group with POGO 100% (difference in medians, 5 seconds; 95% confidence interval, 2 to 8, p = 0.003). Complications were minor.
Conclusion: Using the CMACTM D blade with a reduced POGO in patients with cervical spine immobilization resulted in faster tracheal intubation.
Trial registration: The trial is registered at ClinicalTrial.gov (CT.gov identifier: NCT04833166).
期刊介绍:
The journal serves the device research community by providing a comprehensive body of high-quality information from leading experts, all subject to rigorous peer review. The Expert Review format is specially structured to optimize the value of the information to reader. Comprehensive coverage by each author in a key area of research or clinical practice is augmented by the following sections:
Expert commentary - a personal view on the most effective or promising strategies
Five-year view - a clear perspective of future prospects within a realistic timescale
Key issues - an executive summary cutting to the author''s most critical points
In addition to the Review program, each issue also features Medical Device Profiles - objective assessments of specific devices in development or clinical use to help inform clinical practice. There are also Perspectives - overviews highlighting areas of current debate and controversy, together with reports from the conference scene and invited Editorials.