Relative Nerve Blocking Properties of Bupivacaine and Ropivacaine in Dogs Undergoing Brachial Plexus Block Using a Nerve Stimulator

Abstract

ABSTRACT. In the present study, the efficacy of a nerve stimulator in performing brachial plexus block (BPB) in dogs was investigated. The nerve blocking effects of bupivacaine and ropivacaine for BPB were also compared. Twelve beagles were allocated to groups based on the following treatments: conventional BPB with 0.5% bupivacaine (0.5% BupiM group) or BPB with 0.5% bupivacaine, 0.5% ropivacaine or 0.75% ropivacaine and a nerve stimulator (the 0.5% BupiS, 0.5% RopiS and 0.75% RopiS groups, respectively). After BPB, nerve blocking effects were assessed based on sensory blockade in several cutaneous areas and knuckling. The ratio of full block (blockade in all cutaneous areas) for 0.5% BupiM was 25%, and that for 0.5% BupiS was significantly higher, 75% (p<0.05). For the 0.5% BupiS, 0.5% RopiS and 0.75% RopiS groups, the average duration of full block was 387, 184 and 275 min, respectively, and the average duration of knuckling was 703, 460 and 421 min, respectively. The duration of full block and knuckling for the two ropivacaine groups was shorter compared with that of the 0.5% BupiS group. In conclusion, when using bupivacaine and ropivacaine for BPB in dogs, it is worth noting that there are differences in onset time and duration and that effective perioperative analgesia can be achieved depending on the intended use.KEY WORDS: brachial plexus block, bupivacaine, canine, nerve stimulator, ropivacaine.

Comparison of lidocaine, lidocaine-morphine, lidocaine-tramadol or bupivacaine for neural blockade of the brachial plexus in fat-tailed lambs

“…The success rate for full brachial plexus blockade in this study was approximately 86%, similar to that reported in dogs (75%) and goats (95%) (Moens ; Sakonju et al. ). The success rate of blind infiltration of local anaesthetic was only 20% in goats (Moens ).…”

“…Brachial plexus block can be achieved by injecting a local anaesthetic agent around the brachial plexus nerves at the approximate level of the scapulohu-meral joint. A peripheral nerve stimulator can be used to locate accurately the radial, median, ulnar, musculocutaneous and axillary nerves (Skarda & Tranquilli 2007a), and this technique enhances the chances of successful BPB in small animals and may allow a reduction in the dose of local anaesthetic agent (Futema et al 2002;Wenger et al 2005;Mahler & Reece 2007;Sakonju et al 2009;Mosing et al 2010).…”

A comparative study on the effectiveness of bupivacaine and ropivacaine for supraclavicular block

“…This was similar to the study by D Tripathi et al, Modak S Basantwani S, Anupreet Kaur et al and Iwao Sakonju et al, which reported shorter duration of action with Ropivacaine. [14][15][16]19 However, it is in contrast to the study by Himat Vaghadia et al, which found that both drugs were comparable in duration of action. 20 However, in this study, different concentrations of the anesthetic agents were used, which might have led to the comparable results.…”

Use of brachial plexus blockade and medetomidine-ketamine-isoflurane anaesthesia for repair of radio-ulna fracture in an adult cheetah (acinonyx jubatus)

“…Absence of autonomic cardiopulmonary reactions to the surgical manipulation may be attributed to the efficacy of brachial plexus block. Apart from lidocaine, other local anaesthetics can be used; bupivacaine has been shown to confer long term perioperative analgesia while rupivacaine provides superior analgesia with minimal motor effects [ 18 ] owing to the fact that it is less potent at blocking Aβ fibres, but more potent in blocking Aδ and C fibres [ 19 ].…”