Monitoring DOACs with a Novel Dielectric Microsensor: A Clinical Study.
Monitoring DOACs with a Novel Dielectric Microsensor: A Clinical Study.
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DOI:
10.1055/s-0040-1715589
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发表时间:
2021-01
影响因子:
6.7
通讯作者:
Stavrou EX
中科院分区:
文献类型:
--
作者:
Maji D;Opneja A;Suster MA;Bane KL;Wilson BM;Mohseni P;Stavrou EX
There are acute settings where assessing the anticoagulant effect of direct oral anticoagulants (DOACs) can be useful. Due to variability among routine coagulation tests, there is an unmet need for an assay that detects DOAC effects within minutes in the laboratory or at the point of care. We developed a novel dielectric microsensor, termed ClotChip, and previously showed that the time to reach peak permittivity (Tpeak) is a sensitive parameter of coagulation function. We conducted a prospective, single-center, pilot study to determine its clinical utility at detecting DOAC anticoagulant effects in whole blood. We accrued 154 individuals: 50 healthy volunteers, 49 rivaroxaban patients, 47 apixaban, and 8 dabigatran patients. Blood samples underwent ClotChip measurements and plasma coagulation tests. Control mean Tpeak was 428 seconds (95% confidence interval [CI]: 401–455 seconds). For rivaroxaban, mean Tpeak was 592 seconds (95% CI: 550–634 seconds). A receiver operating characteristic curve showed that the area under the curve (AUC) predicting rivaroxaban using Tpeak was 0.83 (95% CI: 0.75–0.91, p < 0.01). For apixaban, mean Tpeak was 594 seconds (95% CI: 548–639 seconds); AUC was 0.82 (95% CI: 0.73–0.91, p < 0.01). For dabigatran, mean Tpeak was 894 seconds (95% CI: 701–1,086 seconds); AUC was 1 (p < 0.01). Specificity for all DOACs was 88%; sensitivity ranged from 72 to 100%. This diagnostic study using samples from “real-world” DOAC patients supports that ClotChip exhibits high sensitivity at detecting DOAC anticoagulant effects in a disposable portable platform, using a miniscule amount of whole blood (<10 μL).
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