Aspirin Dosing for Secondary Stroke Prevention in Adults ≥ 80 YearsLow‑Dose Aspirin RecommendationAge‑Related Bleeding RiskImmediate Medication AdjustmentsGuideline Support for Single Antiplatelet TherapyAdditional Cardiovascular Management (Supporting Recommendations)Blood‑Pressure ManagementLipid ManagementMonitoring After Aspirin Dose Change