Effectiveness of injection of local anesthetic into the retrobulbar space for postoperative analgesia following eye enucleation in dogs

Journal of the American Veterinary Medical Association
Kathern E MyrnaLesley J Smith

Abstract

To assess the efficacy of a retrobulbar bupivacaine nerve block for postoperative analgesia following eye enucleation in dogs. Randomized controlled trial. 22 dogs. Client-owned dogs admitted to the hospital for routine eye enucleation were enrolled with owner consent and randomly assigned to a treatment (bupivacaine hydrochloride) or control (saline [0.9% NaCl] solution) group. Baseline subjective pain scores were recorded. Anesthesia consisted of hydromorphone and midazolam preoperatively, thiopental or propofol for induction, and isoflurane in oxygen for maintenance. An inferior-temporal palpebral retrobulbar injection of either saline solution or bupivacaine was administered. Transpalpebral eye enucleation was performed. Pain scores were recorded at 0.25, 0.5, 1, 2, 4, 6, 8, and 24 hours after extubation (time 0) by observers masked to treatment groups. Dogs were given hydromorphone (0.2 mg/kg [0.09 mg/lb], IM or IV) as a rescue analgesic if the subjective pain score totaled >or= 9 (out of a maximum total score of 18) or >or= 3 in any 1 category. 9 of 11 control dogs required a rescue dose of hydromorphone, but only 2 of 11 dogs in the bupivacaine treatment group required rescue analgesia. Mean time to treatment failure (ie...Continue Reading

Citations

Feb 14, 2013·Journal of the American Veterinary Medical Association·Tania E PerezRaelynn Farnsworth
Nov 25, 2014·American Journal of Veterinary Research·Yael Shilo-BenjaminiErik R Wisner
Dec 3, 2014·Journal of the American Veterinary Medical Association·Cherlene DelgadoLesley J Smith
Sep 8, 2015·The Veterinary Clinics of North America. Small Animal Practice·Federica Maggio, Dineli Bras
Jun 21, 2013·Veterinary Anaesthesia and Analgesia·Yael Shilo-BenjaminiErik R Wisner
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Mar 25, 2016·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·J GutiérrezS Johnson
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Feb 14, 2015·Veterinary Ophthalmology·Derek W Y ChowHans D Westermeyer
Jan 18, 2017·Veterinary Ophthalmology·Todd L MarloLeandro B C Teixeira
May 16, 2018·Veterinary Ophthalmology·Yael Shilo-BenjaminiErik R Wisner
Jul 30, 2019·Journal of the American Veterinary Medical Association·Raphaël Vézina-AudetteGiacomo Gianotti
Jan 23, 2020·Veterinary Medicine and Science·Tamara Grubb, Heidi Lobprise
Jan 23, 2020·Veterinary Medicine and Science·Tamara Grubb, Heidi Lobprise
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Jul 2, 2020·Veterinary Ophthalmology·Ashley E ZiburaHans D Westermeyer
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Jul 13, 2020·Veterinary Anaesthesia and Analgesia·Kyle J BartholomewMichael R Lasarev
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Aug 16, 2021·Veterinary Anaesthesia and Analgesia·Adelaide GrecoLeonardo Meomartino
Jul 19, 2017·Veterinary Anaesthesia and Analgesia·Yael Shilo-BenjaminiDavid J Maggs

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