EP Practice Lab · Case 7 of 12
Device Detects Events Not Seen on Surface Rhythm
Stored device events appear rapid, but the surface rhythm does not match.
Question
What should be considered?
Practice Lab principle
Describe what you observe first. Then connect the observation to mechanism, troubleshooting, or next-step reasoning. Avoid jumping from one clue to a final diagnosis.
Educational scope: All cases are synthetic and simplified. They are designed for conceptual practice, not clinical decision-making or independent procedural guidance.