What term refers to the rhythmic pattern in A-Flutter that indicates variations such as 2:1 or 3:1?

The rhythmic pattern in Atrial Flutter, often denoted by variations such as 2:1 or 3:1, is referred to as F-waves. F-waves, or flutter waves, represent the rapid and repeated firings of electrical impulses in the atria, and their appearance is a characteristic feature of Atrium Flutter.

In A-Flutter, the atrial contraction occurs at a rate that can often be seen as a consistent pattern of these waves, manifesting as either 2 F-waves for every QRS complex, termed 2:1 block, or similar configurations for different ratios like 3:1. This variability reflects how many F-waves precede each ventricular beat, which directly affects the heart's rhythm and conduction.

The other terms listed refer to different parts of the cardiac cycle. P-waves represent atrial depolarization in normal sinus rhythm and do not encapsulate the distinct repetitive nature of the F-waves in atrial flutter. QRS complexes correspond to ventricular depolarization and are not indicative of the atrial rhythm itself. T-waves are associated with repolarization of the ventricles and do not pertain to atrial activity at all. Therefore, F-waves are the