Stepwise Screening for Silent Atrial Fibrillation After Stroke

Inclusion Criteria: * Patient who had an ischemic stroke defined according to WHO criteria and hospitalized in the Stroke Unit at the Dijon University Hospital. * Patient 18 years of age and older * Patient who has given oral consent Exclusion Criteria: * Person not affiliated to a national health insurance scheme * Protected adult * Pregnant or breastfeeding woman * Patient refusing to participate in the study * Transfer planned after the stay in the Stroke Unit to a department outside the Dijon University Hospital, not allowing for the long term screening with an external ECG monitor * History of atrial fibrillation or atrial flutter * Patient wearing a pacemaker or defibrillator with an atrial lead