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Effects of methadone and acepromazine or methadone and detomidine on dissociative anaesthesia in horses

Grant number: 16/04462-7
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Start date: June 01, 2016
End date: May 31, 2017
Field of knowledge:Agronomical Sciences - Veterinary Medicine - Animal Clinics and Surgery
Principal Investigator:Adriano Bonfim Carregaro
Grantee:Giuliana Izumi Ueda
Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil

Abstract

The aim of this study is to assess the quality of sedation using two different neuroleptoanalgesia protocols and their influence in the dissociative anesthesia of healthy horses, comproved by laboratorial exams (CBC and biochemical tests). Six adult crossbred animals of both genders will be used in the study. Each animal will undergo two preanesthesic medication protocols, with at least amonth washout period, for total excretion of the drugs. Animals in experimental group MD will receive 0.1 mg/kg of methadone and 0.03mg/kg of detomidine, and animals in MA will receive 0.1 mg/kg of methadone and 0,03 mg/kg of acepromazine, both intravenously (IV). Both groups will receive for anesthesic induction 3mg/kg of ketamine and 0,1 mg/kg midazolam IV. The qualities of sedation, induction and recovery will be assessed by descriptive scales cited in literature. Furthermore, duration of anesthetic induction, maintenance and recovery, and physiological parameters, such as temperature, cardiac rate, respiratory rate, arterial blood pressure and intestinal motility before the premedication (0 min), right after the anesthesic induction (20 min) and then will be assessed every 5 minutes, until the begin of recovery. It is expected that animals from MD show better sedation, induction and recovery qualities than MA.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CARREGARO, ADRIANO BONFIM; UEDA, GIULIANA IZUMI; CENSONI, JULIA BARRIONUEVO; BISETTO, SHAYNE PEDROZO; ALONSO, BRUNA BODINI; REGINATO, GUSTAVO MORANDINI. Effect of Methadone Combined With Acepromazine or Detomidine on Sedation and Dissociative Anesthesia in Healthy Horses. Journal of Equine Veterinary Science, v. 86, . (16/04462-7)