Evaluation of an improved scoring system for the grading of direct laryngoscopy

Yentis, S. M.; Lee, D. J. H.

doi:10.1046/j.1365-2044.1998.00605.x

Cited by 295 publications

(200 citation statements)

References 16 publications

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“…Despite advancements in predicting a difficult airway, the efficacy of routine preoperative tests are still limited (1,2). Difficult intubation and failed tracheal intubation are among the major causes of morbidity and mortality associated with anaesthesia (3,4).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the C-MAC D-Blade, Conventional C-MAC, and Macintosh Laryngoscopes in Simulated Easy and Difficult Airways

Kılıçaslan¹,

Topal²,

Erol³

et al. 2014

Turk J Anesth Reanim

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Objective: Recently, to further enhance the potential in the management of difficult airways, the highly angulated D-Blade was added to the C-MAC system. The purpose of this study was to investigate the laryngoscopic view and intubation parameters using the new C-MAC D-Blade in comparison to the conventional C-MAC video laryngoscope and Macintosh direct laryngoscope in simulated easy and difficult airways. Methods:We recruited 26 experienced anaesthesia providers into a randomized trial. Each performed tracheal intubation of a Laerdal SimMan ® manikin with each laryngoscope in the following laryngoscopy scenarios: (1) normal airway, (2) cervical spine immobilization, and (3) tongue edema. The intubation times, success rates, number of intubation attempts, laryngoscopic views, and severity of dental compression were recorded. Results:In all scenarios, video laryngoscopes provided better laryngeal exposure than the ML and appeared to produce less dental pressure. In the cervical spine immobilization scenario, D-Blade caused less dental pressure and showed better Cormack-Lehane (CL) classes than the other devices (p<0.001). There were no differences between video laryngoscopes in success of tracheal intubation (p>0.05). The CMAC provided the most rapid intubation. The rate of failure was 19% with ML. In the tongue edema scenario, the CMAC provided the most rapid and successful intubation (p<0.001). There were no differences between video laryngoscopes in laryngoscopic views according to CL classification and dental pressure (p>0.05). The rate of failure was 46% with the ML and 7% with the D-Blade. Conclusion:The CMAC D-Blade caused less dental pressure than the conventional C-MAC and ML in the cervical immobilization scenario. The conventional CMAC performed better than the D-Blade and ML in the tongue edema scenario. These two video laryngoscopes may complement each other in various difficult airway situations.

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Section: Introductionmentioning

confidence: 99%

Comparison of the C-MAC D-Blade, Conventional C-MAC, and Macintosh Laryngoscopes in Simulated Easy and Difficult Airways

Kılıçaslan¹,

Topal²,

Erol³

et al. 2014

Turk J Anesth Reanim

View full text Add to dashboard Cite

show abstract

“…While we found no difference in laryngeal view, the fi nding that all subjects reported either a CL I or II view for both devices is clinically significant as these laryngeal views correlate with a successful intubation. [13,14] All intubations performed in our participants were successful no matter whether Airtraq OL or Storz VL was used.…”

Section: Discussionmentioning

confidence: 92%

Comparison of Airtraq optical laryngoscope and Storz video laryngoscope in a cadaver model

Wadman¹,

Dierks²,

Branecki³

et al. 2011

World Journal of Emergency Medicine

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“…The view of the glottis was rated using five grades according to the Cormack-Lehane scoring system as modified by Yentis and Lee [8]: 1=full view of the glottis; 2a=partial view of the glottis; 2b=arytenoids or posterior portion of cords only visible; 3=only the epiglottis visible; 4=neither epiglottis nor glottis visible [5].…”

Section: Methodsmentioning

confidence: 99%

Comparison of Direct and Video Assisted Views of the Larynx during Routine Intubation in Infants and Children

Chhibber¹

2014

J Anesth Clin Res

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Purpose: Video assisted laryngoscopy has been rapidly incorporated into the anesthesiologist's arsenal for challenging adult airway management. The development of pediatric video airway equipment presents an opportunity to expand upon the previous reliance on direct laryngoscopy alone. This study utilized the Storz DCI ® Video Laryngoscope which consists of a standard straight 0 and 1 blade combined with a 2.8 mm fiberoptic light bundle built into the left side of the blade. Method:The ease of use, best direct and video-assisted glottic view was documented for 50 infants and children less than 2 years of age. Direct laryngoscopy was performed with the naked eye (direct view). The best views obtained with and without external laryngeal manipulation were graded by the laryngoscopist without looking at the video monitor. The views on the video monitor, located in front of the intubator and to the right of the patient, were simultaneously graded independently by another pediatric anesthesiologist.Results: Fifty infants and children, ages ranging from one day to 22 months, were enrolled in the study. There were 37 males, and 13 females. The average age was 10.5 months. ASA physical status ranged from I to III, with the vast majority of patients being either class I or II. The grade of laryngeal view on the video monitor was significantly improved when compared with that of direct laryngoscopy (p<0.05). Conclusion:In our study the view on the monitor screen was, on average, one grade better than the direct view. In only one instance was the view obtained with the video laryngoscope worse than that obtained under direct vision. The magnified view provided by the video laryngoscope allows for better visualization of airway structures in difficult airways and further help in facilitating securing the airway.

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Evaluation of an improved scoring system for the grading of direct laryngoscopy

Cited by 295 publications

References 16 publications

Comparison of the C-MAC D-Blade, Conventional C-MAC, and Macintosh Laryngoscopes in Simulated Easy and Difficult Airways

Comparison of the C-MAC D-Blade, Conventional C-MAC, and Macintosh Laryngoscopes in Simulated Easy and Difficult Airways

Comparison of Airtraq optical laryngoscope and Storz video laryngoscope in a cadaver model

Comparison of Direct and Video Assisted Views of the Larynx during Routine Intubation in Infants and Children

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