Avaliação dos parâmetros fisiológicos de cães submetidos a protocolo transanestésico padronizado em rotina clínica

Abstract

Adequate anesthetic monitoring is essential to minimize risks and ensure safety during surgical procedures in dogs, particularly when individual variables such as breed, age, and ASA classification may influence physiological stability. This study aimed to evaluate variations in physiological parameters throughout the transanesthetic period in dogs subjected to a standardized anesthetic protocol, correlating these changes with individual patient characteristics. This prospective, observational research was carried out in a private veterinary clinic in Macapá, Amapá, from September to October 2025, and included 20 dogs undergoing different surgical procedures. All animals received the same anesthetic induction and maintenance protocol. Physiological parameters—including heart rate, respiratory rate, blood pressure, temperature, capnography, and oxygen saturation—were assessed using a standardized method at predefined time points: premedication, postmedication, post-induction, and every 10 minutes during surgery. Results showed that 10,4% (n=67) of the measurements exhibited alterations, while 89.6% (n=577) remained within safe limits. Intercurrences such as hypothermia, bradycardia, hypocapnia, and hyperthermia were observed mainly in ASA III, geriatric, and small-breed patients. In conclusion, the anesthetic protocol used proved to be safe and effective in maintaining physiological stability in most patients, although high-risk animals demonstrated a greater likelihood of alterations, reinforcing the need for continuous and individualized monitoring.