Effect of dexamethasone added to lidocaine in supraclavicular brachial plexus block; a prospective, randomized, double-blind study

Biradar, Prashant A and Kaimar, Padmanabha and Kannappady, Gopalakrishna (2013) Effect of dexamethasone added to lidocaine in supraclavicular brachial plexus block; a prospective, randomized, double-blind study. Indian Journal of Anaesthesia, 57 (2). pp. 180-184.

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Abstract

Background: Different additives have been used to prolong brachial plexus block. We performed a prospective, randomised, double-blind study to evaluate the effect of dexamethasone added to lidocaine on the onset and duration of supraclavicular brachial plexus block as this is the most common type of brachial block performed in our institute. Methods: Sixty American Society of Anaesthesiologist's physical status I and II patients undergoing elective hand, forearm and elbow surgery under brachial plexus block were randomly allocated to receive either 1.5% lidocaine (7 mg/kg) with adrenaline (1:200,000) and 2 ml of normal saline (group C, n=30) or 1.5% lidocaine (7 mg/kg) with adrenaline (1:200,000) and 2 ml of dexamethasone (8 mg) (group D, n=30). The block was performed using a nerve stimulator. Onset and duration of sensory and motor blockade were assessed. The sensory and motor blockade of radial, median, ulnar and musculocutaneous nerves were evaluated and recorded at 5, 10, 20, 120 min, and at every 30 min thereafter. Results: Two patients were excluded from the study because of block failure. The onset of sensory and motor blockade (13.4±2.8 vs. 16.0±2.3 min and 16.0±2.7 vs. 18.7±2.8 min, respectively) were significantly more rapid in the dexamethasone group than in the control group ( P=0.001). The duration of sensory and motor blockade (326±58.6 vs. 159±20.1 and 290.6±52.7 vs. 135.5±20.3 min, respectively) were significantly longer in the dexamethasone group than in the control group ( P=0.001). Conclusion: Addition of dexamethasone to 1.5% lidocaine with adrenaline in supraclavicular brachial plexus block speeds the onset and prolongs the duration of sensory and motor blockade.

Item Type: Article
Uncontrolled Keywords: Adrenaline, brachial plexus block, dexamethasone, lidocaine, supraclavicular block
Subjects: Medicine > KMC Mangalore > Anaesthesiology
Depositing User: KMCMLR User
Date Deposited: 31 May 2013 09:59
Last Modified: 31 May 2013 09:59
URI: http://eprints.manipal.edu/id/eprint/136191

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