Which second-degree block type corresponds to Wenckebach pattern?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the MyMichigan Telemetry Monitoring and Management Test. Utilize flashcards, multiple choice questions, each with hints and explanations. Master your exam!

Multiple Choice

Which second-degree block type corresponds to Wenckebach pattern?

Explanation:
Wenckebach is a second-degree AV block type I. The defining feature is a progressively lengthening PR interval with each beat until a P wave is not followed by a QRS, and then the cycle restarts. This pattern reflects transient delay at the AV node and is often vagally mediated or related to drugs affecting AV nodal conduction. It’s different from Mobitz II, where a QRS drop occurs without the preceding PR lengthening and the PR interval remains constant; from first-degree, where the PR interval is prolonged but every P is followed by a QRS; and from third-degree, where there’s complete AV dissociation with no consistent relationship between P waves and QRS complexes.

Wenckebach is a second-degree AV block type I. The defining feature is a progressively lengthening PR interval with each beat until a P wave is not followed by a QRS, and then the cycle restarts. This pattern reflects transient delay at the AV node and is often vagally mediated or related to drugs affecting AV nodal conduction. It’s different from Mobitz II, where a QRS drop occurs without the preceding PR lengthening and the PR interval remains constant; from first-degree, where the PR interval is prolonged but every P is followed by a QRS; and from third-degree, where there’s complete AV dissociation with no consistent relationship between P waves and QRS complexes.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy