Issue |
J Extra Corpor Technol
Volume 34, Number 4, December 2002
|
|
---|---|---|
Page(s) | 271 - 275 | |
DOI | https://doi.org/10.1051/ject/2002344271 | |
Published online | 11 August 2023 |
Validation of a New Whole Blood Coagulation Monitoring System
Clinical Research, International Technidyne Corporation, Edison, New Jersey
* Address Correspondence to: Stacy Jaryno, 6 Olsen Avenue, Edison, NJ 08820. E-mail: sjaryno@itcmed.com
Received:
April
2000
Accepted:
October
2002
The Hemochron® Response is a third generation point-of-care (POC) whole blood coagulation analyzer that retains the clinical utility of the Hemochron standard (801/8000) while providing a data management program that assists the POC coordinator with Quality Assurance (QA) compliance. Clinical and laboratory studies were performed to ensure consistency of the target anticoagulation times with the Hemochron standard and to evaluate precision and reproducibility of the Hemochron Response. Clinical tests for prothrombin time (PT) using fresh and citrated whole blood, activated clotting time (ACT), and activated partial thromboplastin time (APTT) showed excellent correlation to the Hemochron standard where r = 0.929, r = 0.969, r = 0.947, and r = 0.992, respectively. This was confirmed by a paired Student’s t-test. The standard expectation for reproducibility of ACT tests has been a coefficient of variation (CV) of 10%. Laboratory studies of reproducibility and precision for the Response instrument included analysis of the CV using ACT test tubes. For normal and abnormal control plasma (CPL), the range of CVs observed was 3.3%–4.6% and 3.0%–5.0%, respectively. For heparin dose response analysis, the range for Donor 1 and 2 was 1.0%–4.2% and 1.1%–8.0%, respectively. These data suggest that the Hemochron Response is reliable and equivalent to the Hemochron standard in clinical applications.
Key words: activated clotting time (ACT) / heparin monitoring / hemochron response / point of care testing
© 2002 AMSECT
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