Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. Jul-Sep 2019;35(3):363-367.
doi: 10.4103/joacp.JOACP_245_18.

A Comparison of King Vision Video Laryngoscope With CMAC D-blade in Obese Patients With Anticipated Difficult Airway in Tertiary Hospital in India - Randomized Control Study

Affiliations
Free PMC article

A Comparison of King Vision Video Laryngoscope With CMAC D-blade in Obese Patients With Anticipated Difficult Airway in Tertiary Hospital in India - Randomized Control Study

Raj Sahajanandan et al. J Anaesthesiol Clin Pharmacol. .
Free PMC article

Abstract

Background and aims: This randomized control trial was conducted to compare two video laryngoscopes in obese patients with anticipated difficult airway. Video laryngoscopes have shown to be beneficial in many difficult airway scenarios including obesity. Many studies have shown that even though the glottic view is better, it takes longer to negotiate the endotracheal tube. We proposed to compare CMAC D-blade with King vision-channeled blade for intubating obese patients with anticipated airway difficulty. We hypothesized that channeled scope may be superior as once visualized, tube could be easily negotiated. This would be reflected by time taken for the glottis visualization, time taken for intubation, incidence of complications, and hemodynamic stability.

Material and methods: Sixty-three patients who fulfilled inclusion criteria were enrolled after informed consent. Based on the computer-generated randomization, they were assigned to group 1 (King vision laryngoscope - KVL) and group 2 (CMAC D-blade). All anesthetists who intubated, performed 20 intubations with both video laryngoscopes on manikin before performing the study case. The parameters analyzed were time to visualize the glottis, time to successful intubation, and intubation-related hemodynamic variations and complications.

Results: The mean time taken to visualize the glottis with KVL was 12.93 s compared to 10 s with CMAC D-blade (P value 0.12). Time taken to intubate was 50.04 s with KVL compared to CMAC D-blade which took 46.93 s (P value 0.64). KVL had a complication rate of 20.7% compared to 3.1% with CMAC D-blade (P value 0.04).

Conclusion: There was no statistically significant difference in time to visualize the glottis and intubation between KVL and CMAC D-blade. But there was a high incidence of complications with KVL.

Keywords: CMAC D-blade; King vision laryngoscope; difficult airway.

Conflict of interest statement

There are no conflicts of interest.

Figures

Graph 1
Graph 1
Heart rate variation during intubation in study groups
Graph 2
Graph 2
Systolic blood pressure variation during intubation in study groups
Graph 3
Graph 3
Diastolic blood pressure variation during intubation in study groups

Similar articles

See all similar articles

References

    1. Shiga T, Wajima Z, Inoue T, Sakamoto A. Predicting difficult intubation in apparently normal patients: A meta-analysis of bedside screening test performance. Anesthesiology. 2005;103:429–37. - PubMed
    1. Juvin P, Lavaut E, Dupont H, Lefevre P, Demetriou M, Dumoulin J-L, et al. Difficult tracheal intubation is more common in obese than in lean patients. Anesth Analg. 2003;97:595–600. - PubMed
    1. Healy DW, Maties O, Hovord D, Kheterpal S. A systematic review of the role of videolaryngoscopy in successful orotracheal intubation. BMC Anesthesiol. 2012;12:32. - PMC - PubMed
    1. Agrò F, Barzoi G, Montecchia F. Tracheal intubation using a macintosh laryngoscope or a glidescope in 15 patients with cervical spine immobilization. Br J Anaesth. 2003;90:705–6. - PubMed
    1. Niforopoulou P, Pantazopoulos I, Demestiha T, Koudouna E, Xanthos T. Video-laryngoscopes in the adult airway management: A topical review of the literature. Acta Anaesthesiol Scand. 2010;54:1050–61. - PubMed
Feedback