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ORIGINAL ARTICLE
Year : 2012  |  Volume : 26  |  Issue : 3  |  Page : 180-183

A study on clonidine as a premedicant and its effects on perioperative hemodynamic in normotensive patients


Department of Anaesthesiology, Regional Institute of Medical Sciences, Imphal, India

Correspondence Address:
Gojendra Rajkumar
Department of Anaesthesiology, Regional Institute of Medical Sciences, Imphal
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-4958 .113244

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Background: Hemodynamic instability is one of the most imminent conditions during general anesthesia (GA), especially, during laryngoscopy and intubation. The aim of the study was to study the perioperative hemodynamic effect of clonidine in normotensive patients undergoing elective surgery under GA. Materials and Methods: A randomized double blinded placebo controlled study was conducted in the department of Anesthesiology, Regional Institute of Medical Sciences, Imphal on 150 normotensive adult patients of either sex aged 18-60 years (American Society of Anesthesiologist I and II) undergoing elective surgery under GA. The patients were allocated into three groups viz.: Group 1-2 μg/kg clonidine; group II-3 μg/kg clonidine; and group III - placebo/normal saline. The test drug was administered 30 min before the induction of anesthesia. Upon arrival at theatre, the following data were recorded viz.: (1) Visual analogue score of anxiety, (2) loss of consciousness, and (3) dryness of mouth. Pre-induction heart rate (HR) and blood pressure (BP) were recorded 5 min after resting on the operating table. HR and BP were recorded during the time of intubation every 8 min and ½ h after intubation during the intraoperative period (post-intubation). Postoperative BP and HR on arrival at the post-anesthetic care unit and then every ½ h for 3 h were recorded. Any episodes of nausea and vomiting, shivering and analgesic requirements were noted. Results: Clonidine 2 μg/kg and 3 μg/kg both significantly controlled the perioperative hemodynamics. The hemodynamic changes were statistically significant at all times intervals except at preoperative, at 8 min post-intubation to 1 h post-intubation period. Conclusion: Clonidine is useful as a premedicant in controlling the perioperative hemodynamics changes in normotensive patients undergoing operative procedures under GA.


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