Association of clonidine and ropivacaine in brachial plexus block for shoulder arthroscopy
Abstract Background and objectives: Arthroscopy for shoulder disorders is associated with severe and difficult to control pain, postoperatively. The addition of clonidine to local anesthetics for peripheral nerve block has become increasingly common, thanks to the potential ability of this drug to reduce the mass of local anesthetic required and to prolonging analgesia postoperatively. The present study aimed to evaluate the success of brachial plexus block for arthroscopic rotator cuff surgery using local anesthetic with or without clonidine. Method: 53 patients of both genders, between 18 and 70 years old, American Society of Anesthesiologists I or II, who were scheduled to undergo arthroscopic shoulder surgery were selected. Patients were then randomized into two groups. The verbal numerical pain scale and the presence of motor block were obtained in the post-anesthetic recovery room and 6, 12, 18 and 24 h postoperatively. Results: The association of clonidine (0.15 mg) to a solution of 0.33% ropivacaine (30 mL) in brachial plexus block for shoulder arthroscopy has not diminished the visual numeric pain scale values, nor the need for opioid rescue postoperatively. There was a lower incidence of nausea/vomiting postoperatively and a significant motor block time prolongation in the group of patients who received clonidine as adjuvant. Conclusions: The use of brachial plexus block with local anesthetic for analgesic postoperative control is well established in the literature. The addition of clonidine in the dose proposed for prolongation of the analgesic effect and reduction of opioid rescue proved unhelpful.
Main Authors: | Faria-Silva,Raphael, Rezende,Daniel Câmara de, Ribeiro,Juarez Mundim, Gomes,Telmo Heleno, Oliveira,Braulio Antônio Maciel Faria Mota, Pereira,Fábio Maciel R., Almeida Filho,Ildeu Afonso de, Carvalho Junior,Antônio Enéas Rangel de |
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Format: | Digital revista |
Language: | English |
Published: |
Sociedade Brasileira de Anestesiologia
2016
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-70942016000400335 |
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