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Updated: Jun 10, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
Published on: August 18, 2015
[Ischemic stroke under anticoagulant therapy]
Yasuteru Inoue1, Yuichiro Inatomi, Toshiro Yonehara
1Stroke Center, Saiseikai Kumamoto Hospital.
Insights
Maintaining therapeutic anticoagulation levels in stroke patients may reduce recurrence and improve outcomes, particularly for those with a history of cardioembolic stroke. This finding aids in predicting prognosis for acute ischemic stroke patients.
Area of Science:
- Neurology
- Cardiology
- Pharmacology
Context:
- Acute ischemic stroke management requires understanding recurrence predictors.
- Anticoagulant therapy effectiveness varies among stroke subtypes.
- Japanese stroke guidelines (2004) define therapeutic ranges for anticoagulation.
Purpose:
- To identify factors predicting stroke recurrence during anticoagulation.
- To estimate prognosis in acute ischemic stroke patients on anticoagulant therapy.
- To compare outcomes between therapeutic and sub-therapeutic anticoagulation ranges.
Summary:
- Retrospective analysis of 197 acute ischemic stroke patients compared outcomes within and below therapeutic anticoagulation ranges.
- Therapeutic range group showed fewer cardioembolic strokes (61% vs 77%) and more lacunar strokes (17% vs 6%).
- Patients with prior cardioembolic stroke history had better functional outcomes (Barthel Index, modified Rankin Scale) in the therapeutic range group.
Impact:
- Adequate anticoagulation may prevent thrombogenesis and promote early recanalization.
- Findings suggest improved prognosis for cardioembolic stroke patients with optimal anticoagulation.
- Highlights the importance of maintaining therapeutic anticoagulation levels for stroke patient management.
Abstract:
In order to determine predictive factors of stroke recurrence during anticoagulant therapy and to estimate prognosis, we retrospectively examined clinical data of 197 consecutive patients with acute ischemic stroke. The subjects were divided into two groups, within the therapeutic range group and below therapeutic range group, based on Japanese guidelines for the management of stroke 2004. Univariate analysis revealed that cardioembolic stroke patients were less frequent in the therapeutic range group (61% vs 77%; p = 0.03), while more lacunar stroke patients were experienced (17% vs 6%; p = 0.01). In patients with past history of cardioembolic stroke, significant favorable outcomes as of Barthel index (54 vs 33; p = 0.03) and modified Rankin Scale (3 vs 4; p = 0.04) were found within the therapeutic range group. There is a possibility that adequate anticoagulation prevents thrombogenesis or lead to early recanalization, especially in patients with past history of cardioembolic stroke.
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