Neurological research · 2017
The association between high on-treatment platelet reactivity and early recurrence of ischemic events after minor stroke or TIA.
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Rao Zilong, Zheng Huaguang, Wang Fei, Wang Anxin, Liu Liping, Dong Kehui, Zhao Xingquan, Wang Yilong, Cao Yibin
Аннотация
OBJECTIVES: To evaluate the role of HTPR in predicting early recurrence of ischemic events in patients with minor ischemic stroke or high-risk TIA.
METHODS: From January 2014 to September 2014, a single center continuously enrolled patients with minor ischemic stroke or high-risk TIA and gave them antiplatelet therapy consisting of aspirin with clopidogrel. HTPR was assessed by TEG after 7 days of antiplatelet therapy and detected CYP2C19 genotype. The incidence of recurrent ischemic events was assessed 3 months after onset. The incidence of recurrent ischemic events was compared between the HTPR and NTPR groups with the Kaplan-Meier method, and multivariate Cox proportional hazards models were used to determine the risk factors associated with recurrent ischemic events.
RESULTS: We enrolled 278 eligible patients with minor ischemic stroke or high-risk TIA. Through TEG testing, patients with HTPR were 22.7%, and carriers were not associated with HTPR to ADP by TEG-ADP(%) (p = 0.193). A total of 265 patients completed 3 months of follow-up, and Kaplan-Meier analysis showed that patients with HTPR had a higher percentage of recurrent ischemic events compared with patients with NTPR (p = 0.002). In multivariate Cox proportional hazards models, history of ischemic stroke or TIA (HR 4.45, 95% CI 1.77-11.16, p = 0.001) and HTPR (HR 3.34, 95% CI 1.41-7.91, p = 0.006) was independently associated with recurrent ischemic events.
DISCUSSION: In patients with minor stroke or TIA, the prevalence of HTPR was 22.7%, and HTPR was independently associated with recurrent ischemic events.
METHODS: From January 2014 to September 2014, a single center continuously enrolled patients with minor ischemic stroke or high-risk TIA and gave them antiplatelet therapy consisting of aspirin with clopidogrel. HTPR was assessed by TEG after 7 days of antiplatelet therapy and detected CYP2C19 genotype. The incidence of recurrent ischemic events was assessed 3 months after onset. The incidence of recurrent ischemic events was compared between the HTPR and NTPR groups with the Kaplan-Meier method, and multivariate Cox proportional hazards models were used to determine the risk factors associated with recurrent ischemic events.
RESULTS: We enrolled 278 eligible patients with minor ischemic stroke or high-risk TIA. Through TEG testing, patients with HTPR were 22.7%, and carriers were not associated with HTPR to ADP by TEG-ADP(%) (p = 0.193). A total of 265 patients completed 3 months of follow-up, and Kaplan-Meier analysis showed that patients with HTPR had a higher percentage of recurrent ischemic events compared with patients with NTPR (p = 0.002). In multivariate Cox proportional hazards models, history of ischemic stroke or TIA (HR 4.45, 95% CI 1.77-11.16, p = 0.001) and HTPR (HR 3.34, 95% CI 1.41-7.91, p = 0.006) was independently associated with recurrent ischemic events.
DISCUSSION: In patients with minor stroke or TIA, the prevalence of HTPR was 22.7%, and HTPR was independently associated with recurrent ischemic events.