Which of the following is true about the P waves in Atrial Flutter?

In atrial flutter, the P waves appear as distinct, sawtooth or "shark fin" patterns due to the rapid and organized contractions of the atrial muscle. This distinct morphology is a result of the reentrant circuit that characterizes atrial flutter, leading to a consistent presentation of these waves rather than the irregular fluctuations typically seen in other arrhythmias. These "shark fin" patterns are most commonly referred to as sawtooth waves and are especially observable in leads II, III, and aVF on an electrocardiogram. This unique appearance is essential for healthcare professionals to identify atrial flutter and differentiate it from other supraventricular arrhythmias that may have different wave characteristics.