Ace the Advanced Cardiovascular Life Support Test 2025 – Pump Up Your Skills and Save Lives!

The correct answer identifies atrial flutter as a common type of reentry supraventricular tachycardia. Atrial flutter occurs due to a reentrant circuit within the atria, most frequently around the tricuspid valve in the right atrium. This condition is characterized by a rapid atrial rate and organized electrical activity, typically manifesting as a “sawtooth” pattern on an electrocardiogram, particularly visible in the inferior lead II, III, and aVF.

In understanding reentry mechanisms, it is important to note that reentry occurs because of a unidirectional block and a circuitous conduction pathway. This phenomenon is primarily present in atrial flutter, where such a circuit can sustain rapid atrial depolarization.

Other options such as atrophied ventricular tachycardia, polymorphic ventricular tachycardia, and sinus tachycardia either refer to different types of tachycardia or do not fit the classification of reentry supraventricular tachycardia. In particular, polymorphic ventricular tachycardia is typically associated with structural heart disease and is characterized by varying QRS complexes rather than a reentry mechanism within the atria. Sinus tachycardia is