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Retrobulbar vs peribulbar regional anesthesia techniques using bupivacaine in dogs.
Shilo-Benjamini, Yael; Pascoe, Peter J; Maggs, David J; Hollingsworth, Steven R; Strom, Ann R; Good, Kathryn L; Thomasy, Sara M; Kass, Philip H; Wisner, Erik R.
Afiliação
  • Shilo-Benjamini Y; Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel.
  • Pascoe PJ; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
  • Maggs DJ; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
  • Hollingsworth SR; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
  • Strom AR; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
  • Good KL; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
  • Thomasy SM; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
  • Kass PH; Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA, USA.
  • Wisner ER; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
Vet Ophthalmol ; 22(2): 183-191, 2019 Mar.
Article em En | MEDLINE | ID: mdl-29762893
OBJECTIVE: To compare the effectiveness of retrobulbar anesthesia (RBA) and peribulbar anesthesia (PBA) in dogs. ANIMAL STUDIED: Six adult mixed-breed dogs (18-24 kg). PROCEDURES: In a randomized, masked, crossover trial with a 10-day washout period, each dog was sedated with intravenously administered dexmedetomidine and administered 0.5% bupivacaine:iopamidol (4:1) as RBA (2 mL via a ventrolateral site) or PBA (5 mL divided equally between ventrolateral and dorsomedial sites). The contralateral eye acted as control. Injectate distribution was evaluated by computed tomography. Following intramuscularly administered atipamezole, corneal and periocular skin sensation, intraocular pressure (IOP), and ocular reflexes, and appearance were evaluated for 24 hours. Comparisons were performed with mixed-effects linear regression (IOP) or the exact Wilcoxon signed rank test (scores). Significance was set at P ≤ .05. RESULTS: Injectate distribution was intraconal in 2/6 RBA- and 4/6 PBA-injected eyes. Eyes undergoing PBA had significantly reduced lateral, ventral, and dorsal periocular skin sensation for 2-3 hours, and significantly reduced corneal sensitivity for 4 hours, relative to control eyes. Chemosis and exophthalmos occurred in 33%-40% of eyes undergoing RBA and 83%-100% eyes undergoing PBA but resolved within 14 hours. Anterior uveitis developed in 2/6 and 1/6 eyes of RBA and PBA, respectively, of them corneal ulcer developed in one eye of each treatment. Both resolved 1-3 days following medical treatment. CONCLUSIONS: Peribulbar injection produced notable anesthesia more reliably than did retrobulbar injection. Both techniques may produce adverse effects, although the uveitis/ulcer could have resulted from the contrast agent used.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Bupivacaína / Cães / Anestésicos Locais Limite: Animals Idioma: En Revista: Vet Ophthalmol Assunto da revista: MEDICINA VETERINARIA / OFTALMOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Israel

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Bupivacaína / Cães / Anestésicos Locais Limite: Animals Idioma: En Revista: Vet Ophthalmol Assunto da revista: MEDICINA VETERINARIA / OFTALMOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Israel