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
Stavrou EX
中科院分区:
医学2区
文献类型:
--
作者:
Maji D;Opneja A;Suster MA;Bane KL;Wilson BM;Mohseni P;Stavrou EX

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在某些紧急情况下,评估直接口服抗凝剂 (DOAC) 的抗凝作用可能很有用。由于常规凝血测试之间存在差异,因此对在实验室或护理点在几分钟内检测 DOAC 效果的检测的需求尚未得到满足。我们开发了一种新型介电微传感器,称为 ClotChip,之前表明达到峰值介电常数 (Tpeak) 的时间是凝血功能的一个敏感参数。我们进行了一项前瞻性、单中心试点研究,以确定其在检测全血中 DOAC 抗凝作用方面的临床效用。我们招募了 154 名受试者:50 名健康志愿者、49 名利伐沙班患者、47 名阿哌沙班患者和 8 名达比加群患者。血液样本经过 ClotChip 测量和血浆凝固测试。控制平均值 Tpeak 为 428 秒(95% 置信区间 [CI]:401–455 秒)。对于利伐沙班,平均 Tpeak 为 592 秒(95% CI:550-634 秒)。受试者工作特征曲线显示,使用 Tpeak 预测利伐沙班的曲线下面积 (AUC) 为 0.83(95% CI:0.75–0.91,p < 0.01)。对于阿哌沙班,平均 Tpeak 为 594 秒(95% CI:548-639 秒); AUC 为 0.82(95% CI:0.73–0.91,p < 0.01)。对于达比加群,平均 Tpeak 为 894 秒(95% CI:701–1,086 秒); AUC 为 1(p < 0.01)。所有 DOAC 的特异性为 88%;灵敏度范围为 72% 至 100%。这项使用来自“真实世界”DOAC 患者样本的诊断研究表明,ClotChip 在使用微量全血 (<10 μL) 的一次性便携式平台中检测 DOAC 抗凝作用方面表现出高灵敏度。
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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