The Effect of Perchlorate Medication on Point-of-Care Testing

Hopf, Susanne and Baeumel, Monika and Gruber, Michael and Bein, Thomas and Creutzenberg, Marcus and Graf, Bernhard and Pawlik, Michael (2012) The Effect of Perchlorate Medication on Point-of-Care Testing. CLINICAL LABORATORY, 58 (9-10). pp. 1067-1070. ISSN 1433-6510,

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Abstract

Background: To create awareness for mismeasurements of ion-selective electrodes caused by patients' medications and to prevent severe consequences in an intensive care therapy. Case presentation: A 73-year-old woman presented with severe carbimazol-induced toxic epidermal necrolysis. After replacement of carbimazol by sodiumperchlorate, we detected a huge discrepancy in the measurement of ionised calcium by two different Point-of-Care (POCT) systems. While Siemens Rapidlab 865 (R) showed a severe hypocalcemia at all times, the Radiometer 600 (R) system first presented a severe hypercalcemia and, in the course of the following days, also a hypocalcemia but with significantly (p < 10 to the -45) higher values than the Rapidlab system. Furthermore, the POCT systems detected a pscudohypocalcemia at times where we think there was a normo- or even hypercalcemia which led to incorrect therapy with excessive substitution of ionised calcium. Conclusions: The substance sodiumperchlorate, which is well established in Europe for hyperthyreosis therapy, caused malfunctions of analyses of ionised calcium by POCT systems. (Clin. Lab. 2012;58:1067-1070. DOT: 10.7754/Clin.Lab.2012.111221)

Item Type: Article
Uncontrolled Keywords: NECROLYSIS LYELLS-SYNDROME; Sodiumperchlorate; POCT; ionised calcium; hypercalcemia; pseudohypocalcemia
Subjects: 600 Technology > 610 Medical sciences Medicine
600 Technology > 615 Pharmacy
Divisions: Medicine > Lehrstuhl für Anästhesiologie
Chemistry and Pharmacy > Institute of Pharmacy > Pharmaceutical/Medicinal Chemistry I (Prof. Elz)
Depositing User: Dr. Gernot Deinzer
Date Deposited: 26 May 2020 04:38
Last Modified: 26 May 2020 04:38
URI: https://pred.uni-regensburg.de/id/eprint/19421

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