- INCLUSION CRITERIA:
- Age at least 18 years
- Intracerebral hemorrhage (ICH) (including primary intraventricular hemorrhage) confirmed by brain CT or MRI
- Can be randomized within 14-180 days after ICH onset
- Non-valvular AF (defined as atrial fibrillation or atrial flutter), documented by electrocardiography or a physician-confirmed history of AF
- Provision of signed and dated informed consent form by patient or legally authorized representative
- For females of reproductive potential: use of highly effective contraception
- EXCLUSION CRITERIA:
- Index event is hemorrhagic transformation of a brain infarction or hemorrhage into a tumor
- History of an earlier ICH within 12 months preceding index event
- Active infective endocarditis
- Clear indication for anticoagulant drugs (e.g., requires anticoagulation for DVT or PE) or antiplatelet drugs (e.g., requires aspirin or clopidogrel for recent coronary stent)
- Previous or planned left atrial appendage closure
- Clinically significant bleeding diathesis
- Serum creatinine ≥2.5 mg/dL
- Active hepatitis or hepatic insufficiency with Child-Pugh score B or C
- Anemia (hemoglobin <8 g/dL) or thrombocytopenia (<100 x 109/L) that is chronic in the judgment of the investigator
- Pregnant or breastfeeding
- Known allergy to aspirin or apixaban
- Concomitant participation in a competing trial
- Considered by the investigator to have a condition that precludes safe or active participation in the trial
- Persistent, uncontrolled systolic blood pressure (≥180 mm Hg)
- ICH caused by an arteriovenous malformation (AVM) that has not yet been secure
*Patient may be enrolled if exclusion resolves within 180 days of index ICH (e.g., blood pressure is controlled, AVM secured).
