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Evaluation of a New Point-of-care Diagnostic Test Measuring Inflammation in Emergency Settings

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Journal Sci Rep
Specialty Science
Date 2023 Nov 9
PMID 37945629
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Abstract

Erythrocyte aggregation kinetics is accelerated in diseases with a strong inflammation component. This study aimed to evaluate whether, in an emergency setting, a new point-of-care test measuring erythrocyte aggregation kinetics (EAK) can identify patients with underlying inflammation. Patients visiting an emergency department and needing a blood exam were successively included. EAK was measured at the point-of-care in 20 s directly on the blood samples collected in regular tubes without any manipulation. The primary measure was EAK's half-life during the first 5 s (EAK5s). Each patient's inflammation status was assessed blind to the EAK test results. Receiver Operating Characteristic (ROC) curves for inflammation status were built. 268 patients had their EAK5s measured, and a clear inflammation status was determined for 214 patients (65 had inflammation). Mean EAK5s were 2.18 s and 1.75 s for no inflammation and inflammation groups respectively (p < 0.001). EAK5s appears to be a better inflammation marker than C-Reactive protein (CRP), with an area under the ROC curve of 0.845 compared to 0.806 for CRP (p < 0.0001). The Youden threshold for prediction of inflammation was 1.86 s with 84.6% (78.5-89.9%) specificity and 70.8% (60-81.5%) sensitivity. Point-of-care EAK is an easily measured, immediately available marker of inflammation with a better predictive power than CRP's.

References
1.
Perkkio J, Wurzinger L, Schmid-Schonbein H . Fåhraeus-Vejlens effect: margination of platelets and leukocytes in blood flow through branches. Thromb Res. 1988; 50(3):357-64. DOI: 10.1016/0049-3848(88)90265-4. View

2.
Pohanka M . Diagnoses Based on C-Reactive Protein Point-of-Care Tests. Biosensors (Basel). 2022; 12(5). PMC: 9138282. DOI: 10.3390/bios12050344. View

3.
Umemneku Chikere C, Wilson K, Graziadio S, Vale L, Allen A . Diagnostic test evaluation methodology: A systematic review of methods employed to evaluate diagnostic tests in the absence of gold standard - An update. PLoS One. 2019; 14(10):e0223832. PMC: 6788703. DOI: 10.1371/journal.pone.0223832. View

4.
Gyawali P, Ziegler D, Cailhier J, Denault A, Cloutier G . Quantitative Measurement of Erythrocyte Aggregation as a Systemic Inflammatory Marker by Ultrasound Imaging: A Systematic Review. Ultrasound Med Biol. 2018; 44(7):1303-1317. DOI: 10.1016/j.ultrasmedbio.2018.02.020. View

5.
Semenov A, Lugovtsov A, Shirshin E, Yakimov B, Ermolinskiy P, Bikmulina P . Assessment of Fibrinogen Macromolecules Interaction with Red Blood Cells Membrane by Means of Laser Aggregometry, Flow Cytometry, and Optical Tweezers Combined with Microfluidics. Biomolecules. 2020; 10(10). PMC: 7602533. DOI: 10.3390/biom10101448. View