Comparative study of oral gabapentin, pregabalin, and clonidine as premedication for anxiolysis, sedation, and attenuation of pressor response to endotracheal intubation

Chandrakant Waikar, Jaideep Singh, Deepesh Gupta, Aditya Agrawal

Anesthesia: Essays and Researches 2017 11(3):558-560

Introduction: The aim of the present study was to evaluate and compare the effect of clonidine 200 μg and gabapentin 900 mg and pregabalin 150 mg in attenuation of the hemodynamic response to laryngoscopy and intubation in normotensive patients undergoing elective surgery. Methods: Ninety adult patients between 18 and 60 years are enrolled in the study. Patients with American Society of Anesthesiologists Grade-I and Grade-II are included which are posted for elective surgery under general anesthesia. Patients were divided into three groups: A, B, and C and received oral drugs 90 min before induction of general anesthesia, pregabalin 150, gabapentin 900mg, and clonidine 200 μg, respectively. Hemodynamic parameters such as heart rate and blood pressure were noted just before the (basal) administration of the drug, and in operation room, readings were recorded before intubation (T0) and after intubation at 1, 3, 5, and 10 min. Sedation and anxiety score were noted after 1 h of oral administration of the drug. Results: Mean arterial pressure was well attenuated by pregabalin than others, and mean heart rate following laryngoscopy and intubation was attenuated by clonidine group significantly. Conclusion: We conclude that oral pregabalin and gabapentin attenuate blood pressure response fairly well and heart rate significantly attenuated by clonidine. All three drugs are very effective for relieving anxiety and improving sedation.

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