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The Effects of Topical Anesthesia With Lidocaine 10% Spray Compared to Trans Tracheal and Glossopharyngeal Nerve Block in Hemodynamic Stability During Awake Intubation: A Randomized Controlled Trial



Nazemian Yazdi NA1 ; Yoosefi A1
Authors

Source: Acta Medica Iranica Published:2023

Abstract

Hemodynamic changes is of great concern during awake intubation, particularly in patients with underlying medical conditions. As heterogeneities exist in regard to the best anesthesia drugs and techniques, herein, we aimed to investigate the effects of Lidocaine 10% spray compared to trans tracheal glossopharyngeal nerve block in hemodynamic stability in patients undergoing awake intubation. A total of 62 patients were included in this randomized clinical trial. Using a longitudinal interventional design, hemodynamic measures were statistically compared before intubation, one minute after intubation, and five minutes after intubation. The first group underwent topical anesthesia with Lidocaine 10% sprayed on the base of tongue and tonsillar pillar while the second group underwent trans tracheal and glossopharyngeal nerve block with simultaneous injection of Lidocaine 2%. Our results indicated that all hemodynamic parameters except for the pulse rate in both groups were significantly reduced after the intubation, which indicates the effectiveness of the interventions. However, the reduction in SBP, DBP, and MAP was significantly lower in the nerve block group compared to the Lidocaine spray group. Regarding the pulse rate, despite the significant decrease in the group of patients undergoing nerve block, those undergoing anesthesia with Lidocaine spray experienced a significant increase in the heart rate in the first minute after the operation. Finally, our research provides substantiation that employing a glossopharyngeal nerve block and trans tracheal block constitutes an efficacious method for local anesthetic during conscious intubation and can be a promising technique. © 2023 Tehran University of Medical Sciences. All rights reserved.
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