title: Accuracy of a portable blood gas analyzer incorporating optodes for canine blood.
abstract: The accuracy of a portable blood gas analyzer (OPTI 1) was evaluated using canine blood and aqueous control solutions. Sixty-four arterial blood samples were collected from 11 anesthetized dogs and were analyzed for pH, partial pressure of carbon dioxide (PCO2) partial pressure of oxygen (PO2), and bicarbonate concentration ([HCO3-]) values by the OPTI 1 and a conventional blood gas analyzer (GASTAT 3). The conventional analyzer was considered as a standard against which the OPTI 1 was evaluated. Comparison of OPTI 1 results with those of GASTAT 3 by linear regression analysis revealed a high degree of correlation with the GASTAT 3 (r = .90-.91). The mean +/- SD of the differences between OPTI 1 and GASTAT 3 values was -0.008 +/- 0.017 for pH, -0.88 +/- 3.33 mm Hg for PCO2, 3.71 +/- 6.98 mm Hg for PO2, and -0.34 +/- 1.45 mEq/L for [HCO3-]. No statistically significant difference was found between the OPTI 1 and the GASTAT 3. Agreement between these 2 methods is within clinically acceptable ranges for pH, PCO2, PO2, and [HCO3-]. The coefficients of variation for measured pH, PCO2, and PO2 values of 3 aqueous control solutions (acidic, normal, and alkalotic) analyzed by the OPTI 1 ranged from 0.047 to 0.072% for pH, 0.78 to 1.81% for PCO2, and 0.73 to 2.77% for PO2. The OPTI 1 is concluded to provide canine blood gas analysis with an accuracy that is comparable with that of conventional benchtop blood gas analyzers.
authors.affiliation: Department of Veterinary Surgery, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Shiroshita
authors.forename: R
authors.initials: R
authors.lastname: Tanaka
authors.forename: A
authors.initials: A
authors.lastname: Shibazaki
authors.forename: Y
authors.initials: Y
authors.lastname: Yamane
mesh_terms: D000137:Acid-Base Imbalance / Q000175:diagnosis / Q000662:veterinary; D000818:Animals; D001784:Blood Gas Analysis / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*; D004283:Dog Diseases / Q000175:diagnosis*; D004285:Dogs; D004566:Electrodes; D004867:Equipment Design; D005260:Female; D000860:Hypoxia / Q000175:diagnosis / Q000662:veterinary; D008297:Male; D015203:Reproducibility of Results