(AFib) "Afib-Stroke Connection" Atrial fibrillation (AFib) (AFib) "Afib-Stroke Connection" (AFib) National Stroke Association National Stroke Association National Stroke Association What is Atrial Fibrillation? National Stroke Association Atrial Fibrillation Information Stroke.org 15% of patients who suffer strokes National Stroke Association National Stroke Association prevent stroke.