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High On-Treatment Platelet Reactivity to Adenosine Diphosphate Predicts Ischemic Events of Minor Stroke and Transient Ischemic Attack

First author：Rao, Zilong Zheng, Huaguang Wang, Fei

Corresponding author：Cao, Yibin Wang, Yilong

Minor stroke adenosine diphosphate maximum amplitu

essential_information

2017-10-01

Published articles

Journal：J Stroke Cerebrovasc Dis

Publication type: Research Article

IF(IF): 1.646

PMID: 28736132 Link To Pubmed Full text Download

Background And Purpose

Method

A total of 265 patients received dual antiplatelet therapy were consecutively enrolled. High on-treatment platelet reactivity (HTPR) to ADP was assessed by TEG-ADPMA and detected the CYP2C19 genotype; recurrent ischemic events were followed up for 90 days after onset. The difference of recurrent ischemic events was analyzed with or without HTPR to ADP by the Kaplan-Meier, and further to determine the difference of recurrent ischemic events in each group according to TEG-ADPMA-based tertile distribution.

Conclusion

In patients with minor ischemic stroke and high-risk TIA, the TEG-ADPMA could predict recurrent ischemic events and has auxiliary effect on clinical decision-making.

Main results

A total of 23 (8.6%) patients had recurrent ischemic events. TEG-ADPMA greater than or equal to 48 mm had good predictive value. Whether these patients were divided into 2 groups or 3 groups, the HTPR to ADP group had higher risk of recurrent ischemic events than the normal on-treatment platelet reactivity to ADP group by the Kaplan-Meier (all, P < .05). The tertile distribution map showed that the results of recurrent ischemic events were statistically significant in the third tertile group compared with the other two groups (all, P < .03); also, the third tertile group had a higher rate of carriers of at least 1 CYP2C19 reduced-function allele than the other two groups (P < .05).