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ORIGINAL ARTICLE
Year : 2019  |  Volume : 13  |  Issue : 3  |  Page : 515-521

Comparative evaluation of the effects of pregabalin, dexmedetomidine, and their combination on the hemodynamic response and anesthetic requirements in patients undergoing laparoscopic cholecystectomy: A randomized double-blind prospective study


Department of Anaesthesia, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India

Correspondence Address:
Vandana Talwar
A1/43, Azad Apartments, Sri Aurobindo Marg, New Delhi - 110 016
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/aer.AER_86_19

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Background: In this study, we evaluated the efficacy of premedication with dexmedetomidine, pregabalin, and dexmedetomidine-pregabalin combination for attenuating the haemodynamic stress response to laryngoscopy and intubation and pneumoperitoneum (primary outcome), and for reducing anaesthetic requirement (secondary outcome) in patients undergoing laparoscopic cholecystectomy. Methods: Ninety ASA physical status classes I-II patients, between 18 to 65 years of age, of either sex, scheduled to undergo laparoscopic cholecystectomy were included in this randomised double blind study. Morbidly obese patients and those with history of hypertension, cardiac, renal, hepatic, endocrine or pulmonary dysfunction were excluded. Patients were randomized to three groups – Group P- received oral pregabalin (150 mg) one hour before induction and 100 mL of i.v normal saline (0.9%) over 10 minutes, 10 minutes before induction; Group D- received i.v dexmedetomidine (1 μg.kg−1) prepared in 100 mL of 0.9% normal saline and given over 10 minutes, 10 minutes before induction, and an oral placebo tablet one hour before induction; and Group C-received a combination of oral pregabalin 75 mg one hour before induction, and IV dexmedetomidine (0.5 μg.kg−1) prepared in 100 mL of 0.9% normal saline over 10 minutes, 10 minutes before induction. Results: Dexmedetomidine significantly attenuated the stress response to laryngoscopy and intubation and pneumoperitoneum and reduced anaesthetic requirement as compared to the other two groups. Dexmedetomidine was associated with significantly lower mean arterial pressures and higher sedation score in the preoperative and postoperative period and significantly lower heart rate and arterial pressures and reduced anaesthetic requirement in the intraoperative period as compared to the other groups. Conclusion: Dexmedetomidine is a valuable adjunct to the technique of balanced anaesthesia for maintaining haemodynamic stability.


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