Ocular effects of retrobulbar block with different local anesthetics in healthy dogs

Autor(es)

Honsho, Cristiane dos Santos ^[1] ; Franco, Leandro Guimaraes ^[2] ; Cerejo, Sofia de Amorim ^[3] ; Segato, Murici Belo ^[3] ; Ferreira, Marco Antonio ^[4] ; Bolzan, Aline Adriana ^[5] ; Nishimori Duque, Celina Tie ^[2] ; Laus, Jose Luiz ^[6]

Afiliação do(s) autor(es)

^[1] Univ Franca, UNIFRAN, Franca, SP - Brazil

^[2] Univ Fed Goias, Jatai, Go - Brazil

^[3] Univ Franca, Franca, SP - Brazil

^[4] Fac Ciencias Sociais & Agr Itapeva, Itapeva, SP - Brazil

^[5] Univ Sao Paulo, Sao Paulo, SP - Brazil

^[6] Univ Estadual Paulista, UNESP, Jaboticabal, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SEMINA-CIENCIAS AGRARIAS; v. 35, n. 5, p. 2577-2589, 2014.
• Citações Web of Science: 2

Resumo

The objective of this study was to evaluate the ocular effects, the feasibility and the quality of retrobulbar block using the inferior temporal technique with different local anesthetics applied with the Tuohy epidural needle in dogs. Eight dogs were included in the experiment and each one was studied four times, with interval of 15 days between the treatments: Lido -2% lidocaine, Ropi - 0.75% ropivacaine, Bupi - 0.5% racemic bupivacaine and Levo - 0.75% levobupivacaine. Except for the ropivacaine, all of the local anesthetics contained epinephrine at 1: 200.000. The blocks were performed in the right eyes immediately after anesthetic induction, and the left eyes were not blocked and were used as controls. The intraocular pressure, tear production and corneal sensitivity were evaluated before any procedure (T0), 30 min after premedication (TMPA), 30 min after anesthetic induction (T30), after recovery from anesthesia (TREC), every 60 min up to 360 min and 12 and 24 h after the block. The pupil diameter was evaluated at the same time points, excepted at T0. The maximum pupillary dilatation was observed in Lido group at T120 followed by Ropi at TREC, and Bupi and Levo at T30. All of the anesthetics maintained eye pressure within acceptable levels for normal dogs and significantly reduced tear production. Tear production returned earliest in group Lido, followed by Bupi, Ropi and Levo. The corneal sensitivity returned earliest in group Lido, followed by Ropi, Bupi and Levo. The retrobulbar block using the temporal inferior technique proved to be feasible and safe, although lubrication of the ocular surface is suggested. (AU)

• Processo FAPESP: 07/04586-9 - Avaliacao da producao lacrimal em caes submetidos ao bloqueio retrobulbar.
• Beneficiário: José Eduardo Ribeiro Pereira
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 07/08403-6 - Avaliação da pressão intra-ocular em cães submetidos ao bloqueio retrobulbar
• Beneficiário: Samira Pinto Fernandes
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 07/03505-5 - Bloqueio retrobulbar associado a anestesia intravenosa para cirurgias extra oculares em caes - proposta de um modelo original.
• Beneficiário: Cristiane dos Santos Honsho
• Modalidade de apoio: Auxílio à Pesquisa - Regular