JOURNAL ARTICLE

Attenuation of the hemodynamic response to laryngoscopy and tracheal intubation with fentanyl, lignocaine nebulization, and a combination of both: A randomized controlled trial

Abhyuday Kumar, Anita Seth, Smita Prakash, Mangilal Deganwa, Anoop Raj Gogia
Anesthesia, Essays and Researches 2016, 10 (3): 661-666
27746569

BACKGROUND: The present study was undertaken to compare and evaluate the efficacy of intravenous (IV) fentanyl and lignocaine airway nebulization and a combination of both in attenuating the hemodynamic response to laryngoscopy and tracheal intubation.

MATERIALS AND METHODS: Ninety-six patients of either sex aged between 18 and 65 years of age, belonging to the American Society of Anesthesiologists (ASA) health status Classes I and II, undergoing elective surgery requiring general anesthesia with endotracheal intubation were included in the study. Patients were randomly divided into three groups. Group F received IV fentanyl 2 μg/kg, Group L received nebulization with 3 mg/kg of 4% lignocaine, and Group FL received both nebulization with 3 mg/kg of 4% lignocaine and IV fentanyl 2 μg/kg before intubation. Hemodynamic parameters were noted before and immediately after induction, 1 min after intubation, and every minute after intubation for 10 min.

RESULTS: Hemodynamic response to laryngoscopy and intubation was not completely abolished in any of the groups. Nebulized lignocaine was least effective in attenuating hemodynamic response to intubation, and hemodynamic parameters were significantly high after intubation as compared to other groups. Fentanyl alone or in combination with nebulized lignocaine was most effective, and Group F and Group FL were comparable. The maximum increase in mean blood pressure after intubation from baseline in Groups F, L, and FL was 7.4%, 14.6%, and 5.4%, respectively.

CONCLUSION: In our study, IV fentanyl 2 μg/kg administered 5 min before induction was found to be the most effective in attenuating the hemodynamic response. There was no advantage to the use of nebulized lignocaine in attenuating the hemodynamic response to laryngoscopy and intubation.

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