This study will compare the two methods 5 days holtermonitoring and 30 days thumb electrocardiogram for detection of atrial fibrillation in stroke patients

Patients with a newly stroke will be examined with both 5 day holter monitoring and 30 days thumb ECG at the same time. The detection rates of the two methods will be compared

Inclusion Criteria:

• stroke or TIA within the last 3 months verified by a CT or a MR scan or unequivocal symptoms and old infarcts visualised on CT or MR
• age 65 or above
• patients able to handle the thumb-ECG
• written informed consent

Exclusion Criteria:

• earlier diagnose of atrial fibrillation
• pacemaker or ICD device
• stroke induced by trauma, infection or surgery procedure
• carotid stenosis of more than 60%