A hybrid therapy consisting of a combination of preventive atrial stimulation and pharmacologic therapy maybe useful in restoring sinus rhythm. The HOPE-(Heart Outcomes Prevention Evaluation)-Trial showed a overwhelming evidence that, in a broad range of high-risk patients, an ACE-Inhibitor (Ramipril) prevents cardiovascular death, stroke, and heart failure. AF leads to an activation of the renin-angiotensin system (RAS), which seems to play an important role in atrial remodeling. Both experimental and clinical data have confirmed the pro-arrhythmic role of the RAS and demonstrated an anti-arrhythmic effect of ACE- and AT-I-Inhibitors. Madrid et al. showed that a combination of the AT-I-Inhibitor irbesartan plus amiodarone decreased the rate of AF recurrences, with a dose-dependent effect, in AF patients. ACE- and AT-I-Inhibitors represent new and efficient therapeutical options to contrast the nearly inevitable progression of this arrhythmia towards its permanent form. Beta-Blockers are a common pharmacologic therapy in AF patients.