In the setting of a PAB, what is often reflected on the EKG?

In the setting of a PAB, what is often reflected on the EKG?

• A. A specific rhythm strip
• B. A series of irregular QRS complexes
• C. A distinct pattern of P waves interrupting a normal cycle
• D. Only P waves with no default T wave

Answer: (C)

The correct choice illustrates that in the context of a Paroxysmal Atrial Block (PAB), the EKG often shows a distinct pattern of P waves that interrupts the normal rhythm. In PAB, there are episodes where the atrial activity is disrupted, and this disruption is visible as P waves occurring at irregular intervals, which is characteristic of the condition. The normal ventricular response may be momentarily blocked, leading to a pause that creates an appearance of P waves occurring without subsequent QRS complexes or a disruption in the cycle.

This pattern helps to identify the occurrence of a PAB, as it deviates from the regular rhythmic activity typically observed in normal sinus rhythm. The presence of distinct P waves, especially in context with their interruption of the normal cycle, supports the diagnosis and understanding of the electrophysiological events underlying the PAB.

In contrast, the other options do not accurately describe the hallmark features associated with PAB. For instance, a specific rhythm strip may not convey the complexity of P waves and their interruption, while irregular QRS complexes alone do not encompass the essential characteristics of PAB. Similarly, only noting P waves without acknowledging their relationship to the subsequent QRS complexes does not capture the essence of what is seen on the E