Conduta anestésica em cadela submetida à mastectomia com hipertrofia do ventrículo esquerdo secundário a hiperadrenocorticismo

Abstract

The present report aims to contribute describing the anesthetic procedure in a surgical case of mastectomy in an animal that has systemic alterations secondary to Hyperadrenocorticism, these alterations caused potential risks during the anesthesia. Female, dashchund, 11 years old, 8.2kg, was submitted to mastectomy due to mammary nodules in the right thoracic region. In pre-surgical examinations it was detected left ventricular hypertrophy and systemic hypertension. It received as premedication 0.3 mg/kg morphine (IM) and diazepam 0.2 mg / kg (IV), was induced by inhalation mask with sevoflurane, received lidocaine bolus at a rate of 1.5 mg/kg ( IV) and infusion of lidocaine at a rate of 0.05 mg / kg / min, associated with infusion of morphine at a rate of 0.003 mg/kg/min (IV). The CAM, ETCO2, SpO2, temperature, invasive blood pressure and arterial blood gases were monitored. The patient presented hypotension, hypercapnia and respiratory acidosis which were partially corrected during anesthesia and fully right after. From the parameters of arterial blood gas and by the resistance presented in the assisted ventilation it is supposed the diagnosis of partial thromboembolism (PTE). The Histopathological examination revealed simple carcinoma. It is concluded that the combination of drugs was adequate pre anesthetic medication during surgery , as well as the maintenance option through sevoflurane inhaled gas. It was possible to planning based on previous and complementary examinations of the patient, making the procedure more secure and effective.