Comparação dos efeitos cardiorrespiratórios e eficácia analgésica perioperatória da infusão contínua de dexmedetomidina ou fentanil durante a ovariohisterectomia de cadelas anestesiadas com propofol

Autores

DOI:

https://doi.org/10.33448/rsd-v12i13.43594

Palavras-chave:

Anestesia total intravenosa; Cachorro; Dexmedetomidina; Fentanil; Propofol.

Resumo

O estudo objetivou comparar os efeitos cardiorrespiratórios, analgésicos perioperativos e hemogasométricos de 16 cadelas submetidas a ovariohisterectomia eletiva sob infusão contínua de dexmedetomidina ou fentanil. Os cães foram pré-medicados com morfina (0,5 mg/kg) e dexmedemidina (5 µg/kg) ou acepromazina (0,05 mg/kg), ambos intramuscular (IM), no GDEX ou GFEN, respectivamente. Depois na indução anestésica com propofol intravenoso (IV), os animais do GFEN receberam bolus de fentanil (2,5 µg/kg) IV seguido de infusão contínua (IC) (10 µg/kg/h) e o GDEX recebeu bolus de solução salina 0,9% (volume correspondente de fentanil) seguido de IC de dexmedetomidina (1 µg/kg/h) e a anestesia foi mantida com propofol (0,22 mg/kg/min). Ao final do procedimento todos os animais foram avaliados usando a Escala composta de dor de Glasgow (GCPS) e a Escala analógica visual (VAS). Os dados foram comparados com um valor estatística de p > 0,05. A média da frequência cardíaca foi estatisticamente menor no GDEX quando comparado ao GFEN (p = 0,0498): 54,25 ± 3,919 e 88,38 ± 8,766 batimentos por minuto, respectivamente. Em oposição, a média final da pressão arterial média foi estatisticamente maior no GDEX quando comparado ao GFEN (p = 0,0021): 99,38 ± 8,551 e 80,75 ± 11,12 mmHg, respectivamente. O GDEX e GFEN, nas primeiras 4 e 2 horas de pós-operatório, respectivamente, apresentaram escores estatisticamente maiores que o basal pela GCPS, ocorrendo resgate analgésico em ambos os grupos. Conclui-se que ambos os fármacos nas taxas propostas foram seguros e eficientes no controle nociceptivo intraoperatório, no entanto, falharam em promover analgesia pós-operatória.

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25/11/2023

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CONTERNO, G.; COMASSETTO, F.; CONSOLIM, M. G. .; TOCHETO, R.; OLESKOVICZ, N. Comparação dos efeitos cardiorrespiratórios e eficácia analgésica perioperatória da infusão contínua de dexmedetomidina ou fentanil durante a ovariohisterectomia de cadelas anestesiadas com propofol. Research, Society and Development, [S. l.], v. 12, n. 13, p. e17121343594, 2023. DOI: 10.33448/rsd-v12i13.43594. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/43594. Acesso em: 17 jul. 2024.

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