A COMPARATIVE STUDY OF ORAL CLONIDINE VERSUS ORAL PREGABALIN ON HEMODYNAMIC RESPONSES TO LARYNGOSCOPY AND ENDOTRACHEAL INTUBATION UNDER GENERAL ANAESTESIA

Abstract

Background: Laryngoscopy and endotracheal intubation are potent stimuli that can induce increased sympathetic activity leading to tachycardia, hypertension and dysrrhythmias. Various drugs and methods have been tried to obtund this response. To obtain ideal drugs, studies still continue. We compared the efficacy of clonidine and pregabalin to attenuate the pressor response during laryngoscopy and intubation.

Method: Total 80 patients of ASA grade I scheduled for elective surgery under general anaesthesia, were randomized into two groups. Group A received oral clonidine 300 mcg 2 hrs prior to surgery, group B received oral pregabalin 75mg 2 hrs prior to surgery. Heart rate and blood pressure (SBP, DBP &MAP) were recorded at baseline, before induction, before intubation, during laryngoscopy, 0, 1, 3, 5, and 10 minutes after intubation.

Results: When compared to clonidine and pregabalin, there was a significant increase in HR and MAP in pregabalin after laryngoscopy and tracheal intubation. Clonidine was better than pregabalin in suppressing the pressor response.

Conclusion: Clonidine appears to be better than Pregabalin for control of haemodynamic response to laryngoscopy and intubation besides providing sedation.

Keywords: Clonidine, Pregabalin, hemodynamic changes and endotracheal intubation.