What is characteristic of atrial tachycardia with block?

Atrial tachycardia with block is characterized by a rapid heart rate, typically ranging between 150 to 250 beats per minute. This condition occurs when there is a fast atrial rhythm that is not fully transmitted to the ventricles due to a block in the conduction pathway, often in the atrioventricular (AV) node.

In this scenario, the atria are contracting quickly, which causes the elevated heart rate. The presence of a block prevents all of the atrial impulses from reaching the ventricles, which can result in a slower ventricular rate compared to the atrial rate, but the hallmark of the rhythm itself is the elevated heart rate within that range of 150 to 250 bpm.

The other heart rate options demonstrate slower rhythms that do not align with the definition of atrial tachycardia. A heart rate of 60-100 bpm indicates a normal sinus rhythm or bradycardia, and a heart rate below 60 bpm indicates bradycardia, neither of which reflects atrial tachycardia. Additionally, the absence of P-waves is characteristic of certain types of tachyarrhythmias but is not a defining feature of atrial tachycardia with block, as P