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HRS Board Review 2025 New Courses (Reviewers Copy)
Workshop 1_Electrocardio_Miller_2025_case 2 answer
Workshop 1_Electrocardio_Miller_2025_case 2 answer
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Video Transcription
Video Summary
The video discusses a complex cardiac conduction issue involving bidirectional right bundle branch block and retrograde AV nodal block. The tracing shows a right bundle branch block with a prolonged HV interval in the baseline state. During right ventricular pacing, a retrograde HISS deflection occurs, indicating the block's bidirectional nature as it travels up the left bundle. This retrograde conduction happens up to the AV node, but not to the atrium, confirming a block in the AV node as well. Thus, the case presents both anterograde and retrograde conduction challenges.
Keywords
cardiac conduction
right bundle branch block
retrograde AV nodal block
HV interval
retrograde conduction
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