The majority of patients with a standard indication for permanent pacing and normal LV function remained in a clinically stable condition after pacemaker implantation. However, ∼7% of patients developed new-onset HF over a period of follow-up of 27 months, and the presence of LBBB and LVEF <50% at the baseline predicted HF death or hospitalization.

AHI > or = 15 events/h and hs-C-reactive protein > 0.30 mg/dL are the strongest predictors of the predictors chosen of AF recurrence after successful electrical cardioversion over 1-year follow-up.

In pacemaker patients, device-diagnosed severe SA was independently associated with a higher risk of AF (≥6 h/day) and new-onset AF. In particular, severe SA on follow-up data review identified patients who were ∼2-fold more likely to experience an AF episode in the next 3 months.

Background: Previous studies have shown that the presence of left bundle branch block (LBBB)

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