Once the diagnose of cryptogenic stroke have been carried out, informed consent will be taken and participants will be randomized to 48-hour monitoring arm or 7-day monitoring arm, followed by discharge from hospital.
Randomized clinical trial comparing two monitoring strategies, the use of a 48-hour Holter (routine care branch) and an event recorder for 7 days (intervention branch).~Patients admitted for cryptogenic stroke will be included. Enrollment and randomization of patients will be carried out during the index case hospitalization, while follow-up will be done on an outpatient basis until day 7.