A third to half of recurrent stroke occur while on antiplatelet therapy, but no study has explored factors relating to prognosis of recurrent ischemic stroke. This study aimed to clarify the risk factors to determine the clinical outcome of recurrent ischemic stroke.
A total of 1,333 consecutive acute ischemic stroke patients (first n = 492, recurrent n = 841) were enrolled. We explored factors influencing the modified Rankin Scales (mRS) at discharge that included platelet aggregability, preceding medicines, and well-known risks of biochemical data using Chi-square test or Fisher’s exact probability test.
As to preceding medicines, the proportion of patients who were functionally independent (mRS 0-2) at discharge was higher in preceding P2Y12 inhibitor that suppressed ADP- and collagen-induced macro-aggregation of platelet and Xa inhibitor or warfarin in cardioembolic stroke, but lower in P2Y12 inhibitor and Xa inhibitor or warfarin in lacunar stroke compared with no medicine. Regardless of LDL-cholesterol and HA1c, the mRS at discharge ≤ 2 was increased in the third tertile of serum albumin and body mass index (BMI) in atherothrombotic stroke; serum albumin and high-density lipoprotein cholesterol (HDL-C) in lacunar stroke; and serum albumin, HDL-C and BMI in cardioembolic stroke. Logistic regression analysis identified the following independent predictors for clinical outcome: serum albumin, HDL-C, BMI, and preceding Xa inhibitor and P2Y12 inhibitor.
Regardless of well-known risk factors such as diabetes and high LDL-C, preceding treatment for Xa inhibitor or P2Y12 inhibitor, serum albumin, HDL-C, and BMI were associated with prognosis in recurrent ischemic stroke.

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