Use of multimodal anesthesia in Panthera leo during endodontic treatment
Case report
DOI:
https://doi.org/10.31533/Keywords:
Total intravenous anesthesia, chemical restraint, large felidsAbstract
Anesthesia or chemical restraint is essential in most procedures performed on large felids, requiring detailed knowledge of the species' specific characteristics and the pharmacology of available anesthetics. Among anesthetic techniques, intravenous drug administration allows for rapid distribution and dose adjustments according to the desired effects, making it widely used. This case report describes the evaluation of total intravenous anesthesia in a 17-year-old lioness (Panthera leo) undergoing endodontic treatment. The animal was transported from the Curitiba Municipal Zoo to the Veterinary Hospital of the Federal University of Paraná (HV-UFPR) for an endodontic procedure on a lower canine after prior intramuscular sedation with zolazepam/tiletamine (625 mg). Upon arrival at the hospital, the animal was evaluated and received intramuscular pre-anesthetic medication composed of dexmedetomidine (2 mcg/kg), midazolam (0.1 mg/kg) and methadone (0.1 mg/kg). Anesthetic induction, after venous access, was performed with propofol (1 mg/kg), followed by orotracheal intubation. Anesthetic maintenance was carried out with continuous infusions of propofol, dexmedetomidine, ketamine and remifentanil, with dose adjustments as needed. For local analgesia, a mental nerve block was performed with 10 ml of 0.5% bupivacaine, targeting the left lower canine. With reduced painful stimuli, the continuous infusions were decreased, maintaining only propofol and remifentanil (5 mcg/kg/h). Extubation occurred in the surgical center, and the animal was transported back to the containment box without significant complications, aside from minor difficulties during intubation. The anesthetic protocol used kept the animal stable and provided adequate analgesia throughout the procedure.
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Copyright (c) 2025 Fabiana Gomes Ferreira Alves, Alaina Maria Correia, Angela Carolina Ivanski Collere, Julia Welter Nascimento, Juliana Bresciani, Manoel Lucas Javorouski, Rogério Ribas Lange, Thiago Francisco Costa Solak, Twyla Ramos Santos, Ricardo Guilherme D'Otaviano de Castro Vilani
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