Avaliação de três sensores portáteis veterinários para mensuração da glicemia em felinos

Abstract

The precision and accuracy of portable meters are fundamental to assist in the diagnosis of many diseases and especially for metabolic control of Diabetes Mellitus. Inaccurate readings can lead to inappropriate treatment decisions and consequent risk of the animal life. This study evaluated the performance of veterinary glucometers Alpha Track 2® (Abbott), iPet® (Ulticare Vet Rx ) and Glicovet ® (Eco Veterinária Line) in seventy samples of capillary and whole blood, collected from 70 cats. Two hundred and ten measurements using whole blood and venous blood 210 evaluated the accuracy and clinical accuracy of the three glucometers. Changes of glycemia between 60,45 to 305 mg / dl were obtained, of which 12 samples classified as hyperglycemic, hypoglycemic 17 and 41 established within the normal reference (73-132 mg / dl). Glycemias obtained by glucometers in venous and capillary blood were compared to the standard test, blood glucose obtained by spectrophotometry (colorimetric enzyme - glucose oxidase) with fluoridated sample, the three glucose ranges. Accuracy were evaluated as the limits established by ISO15197: 200314 and by the Great Error Analysis (EGA). All glucometers, evaluated by the EGA, showed adequate clinical accuracy using capillary and whole blood, except Ipet in whole blood. However, none of portable gauges showed adequate accuracy when analyzed according to the requirements of the ISO 2013. In addition, Glicovet® glucometer overerestimated the blood glucose in normal range (Xwhole=103; Xcapillary=95,7;Xplasma=89,1) and hypoglycemic (Xwhole=91,5;Xcapillary= 84,1; Xplasma=67,9) in boths forms of collection (capillary and whole blood),while Alpha Track® overestimed in the hyperglycemic range (whole blood: Xwhole=219,8; Xplasma=67,9) and in all groups evaluated using capillary (Xcapillary= 213,3/ Xplasma=187,9; Xcapillary=106,7/ Xplasma=89,1; Xcapillary=90,4/Xplasma=67,9) as the Ipet® (Xcapillary=236,3/Xplasma=187,9; Xcapillary=120,4/Xplasma=89,1; Xcapillary=104,9/Xplasma=67,9). The results whithout glycemic range (n=70) the Glicovet® underestimated the blood glucose levels in boths forms of collection (Mdwholel=92; Mdcapillary=98; Mdplasma=117), while the Ipet ® overerestimated (Mdcapillary= 136,5; Mdplasma=117) using capillary same.