What classification of AF indicates the first time AF was observed, regardless of its duration or symptoms?

The classification of Atrial Fibrillation known as "First Diagnosed AF" refers specifically to the initial occurrence of AF, regardless of how long it lasts or whether the patient experiences symptoms. This classification is used to indicate that the patient has been diagnosed with AF for the first time, marking a critical point in their cardiac health journey. Recognizing AF at its first presentation can guide subsequent management and treatment plans, emphasizing the importance of appropriate monitoring and intervention.

In contrast, Persistent AF denotes a type of AF that lasts longer than seven days or requires intervention to terminate, while Paroxysmal AF refers to episodes that are intermittent, lasting less than a week, and self-terminating. Permanent AF indicates that the AF is ongoing and no longer responds to attempts to restore normal rhythm. Each of these classifications provides information about the duration and nature of the AF but does not signify the initial diagnosis as "First Diagnosed AF" does.