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Comprehensive and Detailed Explanation:

The correct answer is A because for patients with non-cardioembolic ischemic stroke or transient ischemic attack, clinical guidelines recommend long-term antiplatelet therapy rather than oral anticoagulation to reduce recurrent stroke risk. Approved antiplatelet options include aspirin, clopidogrel, or the combination of extended-release dipyridamole and aspirin. Option B is incorrect because continuous intravenous heparin is an acute inpatient therapy, not a safe long-term outpatient secondary prevention strategy. Option C is incorrect because high INR targets greatly increase bleeding complications without providing added ischemic benefit for non-cardioembolic disease. Option D is incorrect because routine NSAIDs increase cardiovascular and gastrointestinal bleeding risks and are not recommended for stroke prevention. SCRN nurses educate patients on medication options, adherence, and monitoring for adverse bruising or bleeding.