 Summarizing, the goals of our study are to determine a.the association between abnormal circadian BP and the development of paroxysmal AF in hypertensive patients, b.at which level of TOD, paroxysmal AF episodes are detected in hypertensive subjects, c.if there is any association between systolic andor diastolic BP levels with AF occurrence, d.whether the mean heart rate during a 24-hr interval is associated with the development of paroxysmal AF, and finally e.examine the relationship between a wide PP and asymptomatic AF episodes in patients with HTN. 