Detection of Subclinical Atrial Fibrillation in High Risk Patients Using Implantable Loop Recorder

Detection of Subclinical Atrial Fibrillation in High Risk Patients (> 65 Years, Hypertension, Diabetes Mellitus) Using Implantable Loop Recorder

Using implantable loop recorder the investigators wish to detect atrial fibrillation in high risk patients and compare it to the results using conventional Holter monitoring. The hypothesis is that 10-15% of high risk patients have subclinical atrial fibrillation. The investigators want to detect those people so they can receive appropriate anticoagulation treatment. The patients will get a comprehensive workup including ecg, echocardiography and blood tests.

Inclusion Criteria:

• age > 65 years
• arterial hypertension (at least dual treatment)
• diabetes mellitus (oral antidiabetics or insulin)

Exclusion Criteria:

• known atrial fibrillation
• ischaemic heart disease
• Current anticoagulation treatment
• Ejection fraction <45 %
• significant valvular heart disease
• previous stroke/transient ischemic attack
• peripheral arterial disease
• end stage renal disease
• thyreotoxicosis