Which rhythm is most likely when there is 2:1 AV conduction producing a ventricular rate around 150 bpm with a regular sawtooth atrial activity?

Prepare for the Cleveland Clinic EKG Test with flashcards and multiple choice questions. Gain insights with hints and explanations. Ace your exam today!

Multiple Choice

Which rhythm is most likely when there is 2:1 AV conduction producing a ventricular rate around 150 bpm with a regular sawtooth atrial activity?

Atrial flutter presents with rapid, regular atrial activity that forms sawtooth flutter waves. When the AV node conducts in a 2:1 pattern, the ventricular rate lands around 150 bpm and the rhythm remains regular. The key clue is the sawtooth atrial activity, which distinguishes flutter from other tachycardias. Atrial fibrillation would be irregularly irregular with no discrete flutter waves. AVNRT is a narrow complex tachycardia without organized sawtooth atrial activity. Sinus tachycardia shows normal P waves before each QRS and lacks the distinctive sawtooth atrial pattern.

Atrial flutter presents with rapid, regular atrial activity that forms sawtooth flutter waves. When the AV node conducts in a 2:1 pattern, the ventricular rate lands around 150 bpm and the rhythm remains regular. The key clue is the sawtooth atrial activity, which distinguishes flutter from other tachycardias. Atrial fibrillation would be irregularly irregular with no discrete flutter waves. AVNRT is a narrow complex tachycardia without organized sawtooth atrial activity. Sinus tachycardia shows normal P waves before each QRS and lacks the distinctive sawtooth atrial pattern.

More practice questions