Sweet spoT for cArdiac Rhythm monitorinG After sTrokE

The goal of this clinical trial is to compare the use of long-term vs. shorter-term heart monitoring to detect atrial fibrillation after stroke. Patients will be implanted with a loop recorder and will have study follow-up at 3-, 6- an 12-months after implantation. The investigators will evaluate 24 patients, between the 3 centers, in the same way the investigators plan to evaluate a larger number of participants (\>1000) in a future study. This will allow us to learn if such a study is possible, identify potential implementation challenges, and develop strategies to overcome those difficulties.

Inclusion Criteria: \- Adult patients with cortical or subcortical, cryptogenic or non-cryptogenic acute ischemic stroke Exclusion Criteria: * AF on 24-h inpatient or Holter monitoring * Atrial or ventricular thrombus * Other major-risk cardioembolic sources (e.g., mechanical valve) * Other indications (e.g., venous thromboembolism) or contraindications for OACs.