Study of Hemodynamic Effects of Preoperative Single-Bolus Dexmedetomidine in Elective Laparoscopic Surgeries

Objective: To observe the hemodynamic effects of a single bolus dose of dexmedetomidine in patients undergoing elective laparoscopic surgeries. Methods: A total of 60 adult patients were randomized into two groups of 30 each. Group D patients were given 1 µg/kg dexmedetomidine in 50 mL of saline as a single-dose infusion over 10 min before induction. Group S patients were given a 50-mL 0.9% NS slow infusion over 10 min. Groups D and S patients were premedicated 10 min prior to surgery. Baseline vital and hemodynamic parameters were monitored during the perioperative period. Conclusion: Premedicating with a single bolus of 1 µg/kg IV dexmedetomidine has been proven safe and effective in maintaining perioperative hemodynamic stability, although few developed bradycardia and hypotension, which were managed without any adverse outcome. Furthermore, dexmedetomidine effectively reduced the incidence of shivering.