Fernandes, LSargento-Freitas, JMilner, JSilva, ANovo, AGonçalves, TMarinho, AVMariano Pego, GCunha, LAntónio, N2019-10-012019-10-012019Rev Port Cardiol. 2019 Feb;38(2):117-124.http://hdl.handle.net/10400.4/2256Oral anticoagulants have proved to be highly effective in preventing atrial fibrillation (AF)-related strokes. The occurrence of stroke despite oral anticoagulation is unexpected and little is known about the mechanisms responsible. The aim of this study was to assess possible mechanisms for stroke occurrence, such as poor treatment adherence and inappropriate dosage, in patients chronically anticoagulated for AF.porAnticoagulantesFibrilhação AuricularAcidente Vascular Cerebraljournal article10.1016/j.repc.2018.06.004