Fenoterol e Salbutamol via inalatória em cães: aspectos clínico, laboratorial e eletrocardiográfico

Abstract

Salbutamol and fenoterol are agonists β2 adrenergic of short duration, with important paper in the treatment of the breathing diseases due to excellent effect bronchodilator. The study had as objective evaluates through physical exam, laboratorial and electrocardiography the effects of the fenoterol and salbutamol for road inalatory in dogs. Twelve dogs were distributed in 2 groups being: group FE (fenoterol) it received fenoterol through inalatory, in the dose of 2droups/5Kg of alive weight diluted in solution of chloride of sodium 0,9% and administered by road inalatory through the inhalation apparel; group SA (salbutamol) treaty with salbutamol, through aerosol dosador, in the dose of 100 micrograms. They were appraised four different moments, being considered MC (moment controls) before the administration of the drug, M30, M2 and M6, where the evaluations were accomplished respectively with 30 minutes, 2 hours and 6 hours after administration of the drugs. They were checked temperature (T), heart frequency (FC), breathing frequency (f), systolic blood pressure (PAS), appraised the gasometry and electrocardiogram. The fenoterol and salbutamol caused discreet heart stimulation, being significant for the animals of the group SA two hours after the administration of the drug compared a moment controls. Tremors were observed with larger predominance in the animals of the group SA. Decrease of the systolic blood pressure and increase of the breathing frequency were observed in the two groups, and there were not significant alteration of the temperature, gasometry and electrocardiogram for both groups. Was ended that the fenoterol provokes smaller side effects of heart stimulation and tremors compared to the salbutamol being this way a safer drug.