This is a cross-sectional study including patients with permanent atrial fibrillation. Assessment will include:

• clinic blood pressure measurements (mercury sphygmomanometer and automated oscillometric device)
• 24-hour ambulatory blood pressure monitoring
• determination of various serum markers and cardiac ultrasound.
• evaluation of a 24h ambulatory blood pressure monitoring device (Microlife WatchBPO3) in terms of its diagnostic value for the detection of atrial fibrillation compared with the reference 24h Holter ECG

Inclusion Criteria:

• Hypertensives adults in atrial fibrillation

Exclusion Criteria:

• Renal disease (Cr > 2 mg/l).
• Patients with pacemaker rhythm during the study.
• Each patient with acute disease (inflammation, surgery), malignancy, collagen diseases, pulmonary fibrosis, renal failure, liver failure, chronic inflammatory diseases.

SUBJECTS REFERRED TO HYPERTENSION CENTER