Prognosis
In approximately 60% of cases, atrial flutter occurs in the setting of an acute process.[6] Once that process has been treated, sinus rhythm is usually restored and chronic therapy is not required. The thromboembolic risk is similar to that of atrial fibrillation and guidelines for prophylaxis should follow the atrial fibrillation guidelines. If all acute treatments and attempts at cardioversion and ablation fail, chronic atrial flutter is very difficult to rate control and is not as responsive to anti-arrhythmic agents as atrial fibrillation.
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