EP Practice Lab · Case 4 of 12
All Catheters Shift Together
A map suddenly shifts while independent position information appears unchanged.
Question
What should you suspect early?
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.