Long-Term Outcomes After Ischemic Stroke Across Atrial Fibrillation Phenotypes Defined by Detection Timing and Prior Anticoagulation Status

Atrial fibrillation (AF)–associated ischemic stroke is often managed as a single clinical entity; however, prognosis may vary depending on whether AF was detected after the stroke or whether the stroke occurred despite prior oral anticoagulant (OAC) use. We aimed to describe long-term outcomes after ischemic stroke across 3 distinct AF phenotypes: AF complicated by ischemic stroke despite prior anticoagulation (AFIDA), AF complicated by ischemic stroke without prior anticoagulation (OAC-naive AF), and AF detected after stroke (AFDAS).