Comparação de diferentes estiletes usados para intubação com o videolaringoscópio C‐MAC D‐Blade ® : um estudo randômico e controlado

Background: Adequate shapes for videolaryngoscopes are important for safer, faster, and successful intubation. The aim of this study was to compare two different shapes of stylets, the 60º and J-shape stylets, for intubation with the McGrath MAC®. Methods: In this multicenter, prospective, randomized controlled study, patients undergoing elective surgery under general anesthesia were randomly assigned into the 60º group or the J group. After anesthetic induction, subjects in both groups were intubated with an endotracheal tube bent into a specific shape according to the group allocation. Time to intubation, difficulty of intubation, glottic view grade, use of external manipulation, and number of intubation attempts were recorded. Results: One hundred and eight patients in the J group and 110 patients in the 60º group were enrolled. Time to intubation in the J group [23.1 (20.6-28.0)] was not different from the 60º group [24.8 (20.5-28.3), P = 0.623). There were no differences in difficulty of intubation, glottic view grade, use of external manipulation, and number of intubation attempts between the two groups. Conclusions: Adding extra curvature to the tube to resemble the shape of the blade did not improve the intubation conditions of the McGrath MAC®.

show abstract

A randomized clinical trial comparing the King Vision (channeled blade) and the CMAC (D blade) videolaryngoscopes in patients with cervical spine immobilization

Chandy

Pillai²,

Mathew³

et al. 2021

Journal of Anaesthesiology Clinical Pharmacology

View full text Add to dashboard Cite

Background and Aims: Cervical spine immobilization renders direct laryngoscopy difficult. The CMAC D blade and the channeled blade of the King Vision videolaryngoscopes, have both been used for difficult airway management. Our hypothesis is that the channeled blade of the King Vision would be superior to the CMAC D blade in terms of ease of intubation. We tested this hypothesis in a randomized comparison of the two videolaryngoscopes in patients with simulated cervical spine immobilization. Material and Methods: Hundred patients with no anticipated airway difficulty were randomly allocated to two groups after obtaining informed written consent. Following induction, manual inline stabilization (MILS) was applied to simulate a cervical spine injury and immobilzation. Patients were intubated with either of the two videolaryngoscopes. Time for visualization of the glottis, procedural time, intubation difficulty scale (IDS), and hemodynamic response were recorded. Results: The time to visualize the glottis was shorter in the CMAC D group as compared to the King Vision group (P < 0.001). The incidence of external laryngeal manipulation was less in the King Vision group (P < 0.001). The ease of intubation was superior in the King Vision group, based on the IDS (P < 0.001). The haemodynamic response was similar between the groups. Conclusion: King Vision channeled videolaryngoscope was difficult to introduce into the mouth of the patient during laryngoscopy. Once introduced into the mouth, the time for intubation was less and less external laryngeal manipulation maneuvers were performed to achieve successful intubation. The ease of endotracheal intubation was superior for the King Vision videolaryngoscope. The King Vision videolaryngoscope with proper tranining, could be a safe and portable alternative in patients with cervical spine immobilization.

show abstract

Comparação de diferentes estiletes usados para intubação com o videolaringoscópio C‐MAC D‐Blade ® : um estudo randômico e controlado

Cited by 5 publications

References 22 publications

C-MAC D-Blade video laryngoscope for awake double lumen tube placement: A case report

C-MAC D-Blade video laryngoscope for awake double lumen tube placement: A case report

Comparison of Two Different Shapes of Stylets for Intubation with the McGrath MAC®: A Randomized Controlled Trial

A randomized clinical trial comparing the King Vision (channeled blade) and the CMAC (D blade) videolaryngoscopes in patients with cervical spine immobilization

Contact Info

Product

Resources

About