Stratificazione temporale della fibrillazione atriale rilevata dopo ictus: differenze nelle caratteristiche dei pazienti e implicazioni prognostiche.

BACKGROUND: Atrial fibrillation detected after stroke (AFDAS) refers to atrial fibrillation (AF) first identified in patients without previously known AF. We evaluated whether AFDAS detection timing identifies distinct phenotypes and outcomes. METHODS: Retrospective, single-center study of consecutive acute ischemic stroke patients with newly detected AF, classified as: ECG-AF, diagnosed on admission 12-lead ECG, AFDAS-Early, detected ≤14 days, and AFDAS-Late, detected >14 days after stroke. Associations with imaging, echocardiographic, laboratory markers, and outcomes (90-day-mRS, stroke recurrence, mortality) were assessed using multivariable models. RESULTS: We included 328 newly detect