• J Extra Corpor Technol · Mar 2008

    Evaluation of the i-STAT point-of-care analyzer in critically ill adult patients.

    • Jacoline Steinfelder-Visscher, Steven Teerenstra, Jacqueline M T Klein Gunnewiek, and Patrick W Weerwind.
    • Department of Extra-Corporeal Circulation, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
    • J Extra Corpor Technol. 2008 Mar 1;40(1):57-60.

    AbstractPoint-of-care analyzers may benefit therapeutic decision making by reducing turn-around-time for samples. This is especially true when biochemical parameters exceed the clinical reference range, in which acute and effective treatment is essential. We therefore evaluated the analytical performance of the i-STAT point-of-care analyzer in two critically ill adult patient populations. During a 3-month period, 48 blood samples from patients undergoing cardiac surgery with cardiopulmonary bypass (CPB) and 42 blood samples from non-cardiac patients who needed intensive care treatment were analyzed on both the i-STAT analyzer (CPB and non-CPB mode, respectively) and our laboratory analyzers (RapidLab 865/Sysmex XE-2100 instrument). The agreement analysis for quantitative data was used to compare i-STAT to RapidLab for blood gas/electrolytes and for hematocrit with the Sysmex instrument. Point-of-care electrolytes and blood gases had constant deviation, except for pH, pO2, and hematocrit. A clear linear trend in deviation of i-STAT from RapidLab was noticed for pH during CPB (r = 0.32, p = .03) and for pO2 > 10 kPa during CPB (r = -0.59, p < .0001 when 10

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