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Classification of Atrial Fibrillation by Duration and Persistence
| Type or Class of Atrial Fibrillation | Diagnostic Criteria |
|---|---|
| Paroxysmal | An episode of AF that spontaneously converts back to normal sinus rhythm within 7 d. |
| Persistent | Patient requires electrical or chemical/drug cardioversion to restore normal sinus rhythm. |
| Permanent | Present for >6 mo or the patient and physician decide to no longer attempt to restore normal sinus rhythm. |
Abbreviation: AF, atrial fibrillation.
