Brazilian Journal of Veterinary Medicine (Aug 2022)

Comparison of preoperative fluid therapy protocols associated with inhalational or total intravenous anesthesia for anesthetic procedures in dogs with sepsis

  • Vírgínia Conceição Tavares Lima,
  • Ana Julia Rodrigues Peixoto,
  • Maria Eduarda dos Santos Lopes Fernandes,
  • Lucinéia Costa Oliveira,
  • Ana Carolina de Souza Campos,
  • Ágatha Ferreira Xavier de Oliveira,
  • Naiara Vidal Stocco,
  • Cristiane Divan Baldani,
  • Felipe Farias Pereira da Câmara Barros,
  • Cássia Maria Molinaro Coelho

DOI
https://doi.org/10.29374/2527-2179.bjvm001222
Journal volume & issue
Vol. 44
pp. e001222 – e001222

Abstract

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This randomized clinical trial aimed to evaluate different fluid therapy protocols associated with inhalational or total intravenous anesthesia in the cardiorespiratory stability of bitches with sepsis subjected to a surgical procedure to control the infectious focus. Thirty-two bitches diagnosed with pyometra and sepsis and treated at the University Veterinary Hospital between 2018 and 2019 were recruited. After admission, diagnosis, clinical, and laboratory evaluation, patients were randomly distributed into the following groups: propofol 5 (P[5]: preoperative restrictive fluid therapy–5mL/kg/h and intravenous general anesthesia); propofol 10 (P[10]: preoperative liberal fluid therapy–10mL/kg/h and intravenous general anesthesia); and isoflurane 5 (I[5]: preoperative restrictive fluid therapy–5mL/kg/h and inhalational general anesthesia). Lactate on admission (LAC1) and release (LAC2), heart rate (HR), respiratory rate (RR), systolic blood pressure (SBP), rectal temperature (RT), oxygen saturation (SpO2 ), and carbon dioxide extraction rate (EtCO2 ) were analyzed at PRE, T10, T20, T30, T40, T50, TEXT, and TDIS. Clearance of 20% of lactate occurred in 18 dogs, with the P[10] group displaying the best performance. There was no statistical difference in vasopressor requirements among the groups. Liberal fluid therapy showed greater cardiovascular stability than restrictive therapy in the perioperative period. Regarding general anesthesia, isoflurane showed greater cardiorespiratory stability than propofol during anesthetic maintenance. In conclusion, although the three proposed protocols are safe and there is no difference in their superiority, some observed changes may be relevant and considered when it is possible to individualize the therapy for the patient.

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