 Importantly, Iqbal et al, demonstrated that there is an association between AF and nighttime DBP. On top of that, during the past decade, a research study conducted in 546 hypertensive subjects aged 60 years of age and who were followed-up for 9.2 years, showed that DBP, whether 24-hr mean, daytime mean, or nighttime mean, provided the most incremental value for the prediction of morbid events. Thereby, we want to examine if AF episodes have any association with the 24hr systolic and the diastolic blood pressure DBP levels. It would also be interesting to observe for any associations between AF occurrence and the mean 24-hr ABPM and office heart rate HR. 