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The Effect of Verapamil As an Adjuvant Agent With Local Anesthetic on Sensory Block Level, Hemodynamic and Postoperative Pain



Tabaeizavareh MH1 ; Omranifard M2 ; Moalemi A3
Authors
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Authors Affiliations
  1. 1. Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Surgery, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Anesthesiologist, Isfahan, Iran

Source: Pakistan Journal of Medical Sciences Published:2012

Abstract

Objective: Coadministration of verapamil with local anesthetics could potentiate the sensory block of peripheral nerve, increase the duration of sensory nerve block and reduce postoperative pain and analgesic consumption. The aim of this study was to investigate the effect of verapamil as an adjuvant with bupivacaine on level of sensory block, post-operative pain and analgesic consumption among patients undergone elective surgery in Isfahan. Methodology: In this prospective randomized interventional clinical double-blind study ASA physical status I or II male patients referred for elective lower abdominal surgery were enrolled. They randomized in group A (20cc of 0.5% bupivacaine plus 5 mg verapamil) and B(20cc of 0.5% bupivacaine plus 2cc normal saline). The sensory level block, postoperative pain, opioid consumption and vomiting and nausa and hemodynamic state was recorded and compared in two groups. Results: Sixty two patients were studied. Mean of the sensory level block 20 minutes after stating epidural anesthesia and immediately after surgery, postoperative pain score, opioid consumption and nausea and vomiting and fluid intake was not significantly different in two groups (P>0.05). Mean of systolic and diastolic blood pressure and pulse rate changes was not significantly different in two groups (P>0.05). Conclusion: Verapamil as an adjuvant with bupivacaine could not significantly increase the level of sensory block and attenuate post-operative pain and analgesic consumption and hemodynamic condition of the patients. For more accurate results it is recommended to determine the effect of different dose of verapamil in larger sample size of the patients. Studying the effect of other Ca channel blockers would be favorable in this regard.
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