Avaliação laboratorial das alterações renais em cães e gatos

Abstract

This paper seeks to review the evaluation methods renal function and its use in veterinary clinics of cats and dogs. For that, physiological concepts were reviewed, as the possible interpretations of laboratory results that are obtained on the investigation of alterations, transitory or permanent, of renal function. The basic methodology of auxiliary diagnostic, such as serum creatinine and urea dosages, is extremely limited, due to only bring information when over three quarters of the renal function is compromised. Urinalisys, an exam also seen as basic, even though less frequently used as the previous, allow obtain information more sensible to the presence of lesions and lowered function, because of the concentration capacity of urine (water reabsortion) becomes compromised due to azotemia “installation” (non proteic nitrogen elevation on circulation). Also through urinalysis it is possible to identify glomerular (proteinuria) and tubular (high quantity of cylinders and lower reabsortion of solutes as glucose) lesions. Being said that, in here, are mencioned auxiliary methods, of low cost and easy access, that are not broadly diffused through veterinary medicine, but with relevant studies that allow their use with scientific prove, as it is the case in urine dosage of gama glutamyltranspeptidase (GGT), alkaline phospatase (AP), protein and creatinine as their ratio.