title: Evaluation of the i-STAT portable clinical analyzer in chickens (Gallus gallus).
abstract: The i-STAT portable clinical analyzer (PCA) was evaluated for performance in avian species. With the EG7+ cartridge, which provided results for hydrogen ion concentration, oxygen tension, carbon dioxide tension, sodium, potassium, ionized calcium, hematocrit, and various calculated parameters, analytical accuracy and precision were tested by comparing obtained values to those of established traditional blood gas and chemistry analyzers. Deming's regression and bias plots were used to compare i-STAT results with those obtained by laboratory professionals using benchtop analyzers. The reliability of the i-STAT PCA with EG7+ cartridges was good, with 0-5.7% system failures in measured values. Regression statistics were good for all blood gas analytes and acceptable for electrolytes and calculated parameters, except for potassium and base excess, for which the regression data or the discrepancy between the methods was too large. The system was reliable and easy to use and had an overall acceptable accuracy in avian species. These features, together with portability and small required blood volumes, make the i-STAT suitable for point-of-care use in critical avian patients, although single values require careful interpretation.
authors.affiliation: Division of Zoo Animals and Exotic Pets, Vetsuisse Faculty, University of Zürich, Winterthurerstrasse 260, 8057 Zürich, Switzerland. hsteinmetz@vetclinics.unizh.ch
authors.forename: Hanspeter W
authors.initials: HW
authors.lastname: Steinmetz
authors.forename: Rainer
authors.initials: R
authors.lastname: Vogt
authors.forename: Sabine
authors.initials: S
authors.lastname: Kästner
authors.forename: Barbara
authors.initials: B
authors.lastname: Riond
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Hatt
mesh_terms: D000818:Animals; D001784:Blood Gas Analysis / Q000295:instrumentation / Q000662:veterinary*; D002245:Carbon Dioxide; D002645:Chickens / Q000097:blood*; D004573:Electrolytes / Q000097:blood; D006400:Hematocrit / Q000662:veterinary; D006452:Hemoglobinometry / Q000295:instrumentation / Q000662:veterinary; D006863:Hydrogen-Ion Concentration; D010100:Oxygen; D010313:Partial Pressure; D019095:Point-of-Care Systems; D012964:Sodium / Q000097:blood
chemical_list: D004573:Electrolytes; D002245:Carbon Dioxide; D012964:Sodium; D010100:Oxygen