Steinmetz Hanspeter W, Vogt Rainer, Kästner Sabine, Riond Barbara, Hatt Jean-Michel
Division of Zoo Animals and Exotic Pets, Vetsuisse Faculty, University of Zürich, Winterthurerstrasse 260, 8057 Zürich, Switzerland.
J Vet Diagn Invest. 2007 Jul;19(4):382-8. doi: 10.1177/104063870701900407.
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.
对i-STAT便携式临床分析仪（PCA）在鸟类中的性能进行了评估。使用EG7+检测卡可得出氢离子浓度、氧分压、二氧化碳分压、钠、钾、离子钙、血细胞比容以及各种计算参数的结果，通过将所得值与已有的传统血气和化学分析仪的值进行比较来测试分析的准确性和精密度。使用戴明回归法和偏差图将i-STAT的结果与实验室专业人员使用台式分析仪获得的结果进行比较。带有EG7+检测卡的i-STAT PCA可靠性良好，测量值的系统故障率为0-5.7%。除钾和碱剩余外，所有血气分析物的回归统计良好，电解质和计算参数的回归统计可接受，钾和碱剩余的回归数据或方法间的差异过大。该系统可靠且易于使用，在鸟类中总体准确性可接受。这些特点，再加上便携性和所需血量少，使得i-STAT适用于危重症鸟类患者的床旁检测，不过单个值需要仔细解读。
