DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20180623

Clinical efficacy of dexmedetomidine in two different doses to attenuate the hemodynamic changes during laparoscopic cholecystectomy

Tahir Ahamad Masoori, Kumkum Gupta, Salony Agarwal, Manoranjan Bansal, Azka Zuberi, Abdul Samad

Abstract


Background: Laryngoscopy and laparoscopy lead to predictable hemodynamic changes. Dexmedetomidine is selective 2 agonist with dose dependent sedation, sympatholysis and analgesia, hence could provide stable hemodynamics during laparoscopic surgeries. The present study was aimed to compare the clinical efficacy of dexmedetomidine infusion in two different doses to attenuate the hemodynamic variations during laparoscopic cholecystectomy.

Methods: Total 60 adult patients of ASA physical status I and II of both gender, scheduled for elective laparoscopic cholecystectomy, were randomly allocated into two groups of 30 patients. All patients were infused with loading dose of dexmedetomidine (1µg/kg) before induction. Patients of Group 1 received maintenance infusion of dexmedetomidine in doses of 0.3µg/kg/h and patients of Group 2 received maintenance infusion of dexmedetomidine in doses of 0.6µg/kg/h, continued till the end of surgery. Heart rate and blood pressure were recorded preoperatively, after dexmedetomidine administration, after induction, intubation, after creation of pneumoperitoneum and postoperatively. Intraoperative changes in heart rate and blood pressure were noted as primary variables and dexmedetomidine related side effects were noted as secondary outcomes, for statistical analysis.

Results: The hemodynamic responses were attenuated in patients of both groups after laryngoscopy, intubation and creation of pneumoperitoneum but patients of Group 2 (0.6µg/kg/h) showed more stability in hemodynamics. The difference between the group was statistically significant (p value=0.001). No any evident complication or side effects occurred.

Conclusions: Dexmedetomidine infusion was effective for attenuating the hemodynamic changes due to laryngoscopy and laparoscopy but were better with maintenance infusion of dexmedetomidine in dose of 0.6µg/kg/h. 


Keywords


Dexmedetomidine, Hemodynamic changes, Laryngoscopy, Laparoscopic cholecystectomy, Pneumoperitoneum

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References


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