ORIGINAL ARTICLE
Year : 2015  |  Volume : 9  |  Issue : 4  |  Page : 386-392

The effects of dexmedetomidine on attenuation of hemodynamic changes and there effects as adjuvant in anesthesia during laparoscopic surgeries


1 Department of Anesthesia and Critical Care, G. R. Doshi and K. M. Mehta Institute of Kidney Diseases and Research Centre and Dr. H. L. Trivedi Institute of Transplantation Sciences, Civil Hospital Campus, Ahmedabad, Gujarat, India
2 Department of Anesthesia and Critical Care, Institute of Kidney Diseases and Research Centre and Dr. H. L. Trivedi Institute of Transplantation Sciences, Asarwa, Ahmedabad, Gujarat, India

Correspondence Address:
Kalpana S Vora
13, Chokshi Park, Jivraj Park, Ahmedabad - 380 051, Gujarat
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1658-354X.159461

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Background: As an anesthetic adjuvant dexmedetomidine has been shown to provide good perioperative hemodynamic stability with minimum alveolar concentration sparing effect on inhalational anesthetic agents during laparoscopic surgeries performed under general anesthesia. Aim: The study was planned to investigate the effects of dexmedetomidine on attenuation of hemodynamic changes and requirements of intra-operative analgesic and inhalational anesthetic during laparoscopic surgeries and its postoperative side effects. Materials and Methods: A total of 70 patients scheduled for elective laparoscopic surgeries were randomized to receive bolus infusion of dexmedetomidine (group D) or saline (group S) 1 mcg/kg/h, followed by continuous infusion of the same, at the rate of 0.5 mcg/kg/h. Anesthesia was maintained with nitrous oxide in oxygen, muscle relaxant and isoflurane. Supplementation with end-tidal isoflurane was considered when heart rate (HR) and mean arterial blood pressure (BP) exceeded 20% of the baseline value. Hemodynamics, end-tidal isoflurane concentration and adverse events were recorded. Results: Intra-operative mean HR and mean BP in group D were lower than group S (P < 0.05) throughout the laparoscopy surgery. Requirement of intra-operative fentanyl, end-tidal isoflurane and postoperative tramadol were significantly more in group S compared to group D (P < 0.05) Statistically significant nausea and vomiting were noted in group S. Undue sedation and other adverse effects are comparable in both the groups. Conclusion: Dexmedetomidine as an adjuvant in general anesthesia for laparoscopic surgeries provided a stable hemodynamic profile in the perioperative period and effectively blunted pressor response to intubation and extubation, leading to minimal requirements for additional analgesics and potent inhalational agents. There were less adverse events.


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