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Evaluation of four point of care units for the determination of blood L lactate concentration in cattle     
Yazarlar
Tolga Karapınar
Fırat Üniversitesi, Türkiye
Prof. Dr. Özgür KAYNAR Prof. Dr. Özgür KAYNAR
Atatürk Üniversitesi, Türkiye
Armağan Hayırlı
Atatürk Üniversitesi, Türkiye
Mustafa Köm
Fırat Üniversitesi, Türkiye
Özet
Background: Despite being used commonly in bovine medicine, information on reliability of point-of-care (POC) lactate meters is limited. Objective: To determine the validity of 4 commercially available POC lactate meters in cattle. Animals: Cattle with various diseases (n = 120). Methods: Blood samples collected from the jugular vein were processed immediately on POC lactate meters. Plasma l-lactate concentration was measured by the enzymatic-colorimetric method (ELISA). Data were subjected to Friedman's test for comparison, Passing-Bablok regression and Bland-Altman plot analyses for reliability, and receiver operating characteristics analysis for sensitivity (Se) and specificity (Sp). Results: The POC lactate meters were highly correlated with ELISA (r = 0.98-0.99) despite disagreements among units. When regressed on ELISA, blood l-lactate concentrations generated from Accutrend Plus and Lactate Pro were linear up to 16.6 and 15.7 mmol/L, respectively, whereas those generated from i-STAT and Lactate Scout were linear up to 19.5 and 19.7 mmol/L, respectively. All POC lactate meters had a Se of 100% with Sp of 95.7-98.6% at a plasma l-lactate cut-off concentration of 4 mmol/L. i-STAT had the best accuracy (99.0%) and precision (99.8%), the best linear fit (y = -0.13 + 1.04X) yielding the lowest bias (-6.6%) as well as the highest Se (100%) and Sp (98.6%). Conclusions and Clinical Importance: Despite high correlation with the reference method, dilution is needed for Accutrend Plus/Lactate Pro and i-STAT/Lactate Scout if concentrations >15 and 20 mmol/L, respectively. i-STAT provided the most accurate and precise results. © 2013 by the American College of Veterinary Internal Medicine.
Anahtar Kelimeler
Accuracy | Bovine | Portable lactate meter | Precision | Sensitivity | Specificity
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF VETERINARY INTERNAL MEDICINE
Dergi ISSN 0891-6640
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 11-2013
Cilt No 27
Sayı 6
Sayfalar 1596 / 1603
Doi Numarası 10.1111/jvim.12204
Makale Linki http://onlinelibrary.wiley.com/doi/10.1111/jvim.12204/epdf