Indian Journal of Respiratory Care

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VOLUME 1 , ISSUE 2 ( July-December, 2012 ) > List of Articles

Original Article

Comparison of the ‘D blade’ with the conventional blade of C-MAC® for endotracheal intubation in patients with simulated limitation of cervical movements

Shyamsunder Kamath

Keywords : C-MAC®, D blade, videolaryngoscope, cervical immobilisation

Citation Information : Kamath S. Comparison of the ‘D blade’ with the conventional blade of C-MAC® for endotracheal intubation in patients with simulated limitation of cervical movements. Indian J Respir Care 2012; 1 (2):144-148.

DOI: 10.5005/ijrc-1-1-144

License: NA

Published Online: 01-12-2022

Copyright Statement:  NA


Abstract

Background: The C-MAC® videolaryngoscope enables better visualisation of glottis for rapid and successful endotracheal intubation. Aim: The present study is aimed at comparing the conventional C-MAC® blade with new ‘D’ blade in patients with simulated cervical spine immobilisation. Methods: This was a prospective, randomised and crossover study. Eighty patients were randomised to one of two groups: Group CD or Group DC (CD - Conventional blade first, DC-D blade first). Patients in each group had laryngoscopy performed with both the blades in random order following which the patient’s trachea was intubated using the blade used for second laryngoscopy. Results: The mean (± SD) age was 39.4 (± 12.4) years. There were 33 male and 47 female patients. The average weight was 57.2 kg. No patient had a grade 3 or 4 view at initial laryngoscopy (without cervical spine immobilisation) with Macintosh blade and hence not excluded. 75 patients had a grade 1 view and 5 patients with grade 2 view with D blade whereas 63 patients had a grade 1 view and 17 patients had a grade 2 view with the conventional blade. The difference was clinically and statistically very significant. The time taken for laryngoscopy and intubation, and the overall satisfaction score did not differ between the groups. Conclusions: The D blade of C-MAC® videolaryngoscope enables better visualisation of glottis as compared to the conventional blade, for endotracheal intubation in patients with simulated limitation of cervical movements. The time taken for laryngoscopy, endotracheal intubation and the overall satisfaction score did not differ between the two blades.


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