What is the normal HV range?

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 $24.99Unlock all

Prepare for the Electrophysiology Unit (EPU) 26.19 exam with our interactive quiz featuring flashcards and multiple choice questions. Check your understanding with hints and explanations for each question.

Multiple Choice

What is the normal HV range?

Explanation:
HV interval measures the conduction time from the His bundle to the ventricular myocardium, recorded on intracardiac electrograms in milliseconds. In a healthy conduction system, this interval is typically 35 to 55 milliseconds. That range is used as the normal reference. If the HV interval is longer than about 55 ms, it suggests delayed conduction below the His bundle (infra-Hisian conduction disease, such as bundle branch block or His-Purkinje system impairment). If the HV interval is shorter than about 35 ms, it can indicate accessory pathway conduction that bypasses part of the normal His-Purkinje pathway, as seen with pre-excitation. So, the normal HV range is 35–55 ms.

HV interval measures the conduction time from the His bundle to the ventricular myocardium, recorded on intracardiac electrograms in milliseconds. In a healthy conduction system, this interval is typically 35 to 55 milliseconds. That range is used as the normal reference. If the HV interval is longer than about 55 ms, it suggests delayed conduction below the His bundle (infra-Hisian conduction disease, such as bundle branch block or His-Purkinje system impairment). If the HV interval is shorter than about 35 ms, it can indicate accessory pathway conduction that bypasses part of the normal His-Purkinje pathway, as seen with pre-excitation. So, the normal HV range is 35–55 ms.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy