Electrogram Interpretation – 7

This week’s electrogram interpretation:    What is observed in the following electrogram?  The ablation catheter is positioned in the LIPV during a pulmonary vein isolation procedure.    Answer Exit block – AT within the pulmonary vein.   ...

Electrogram Interpretation – 6

This week’s electrogram interpretation:    What is observed in the following electrogram?    Answer Unable to interpret – repeat extrastimulus testing.   In this example, there are two RV catheters displayed. The physician is performing a VT...

Electrogram Interpretation – 1

This week’s electrogram interpretation:    What is observed in the second electrogram? Answer VERP   •Both of these examples demonstrate extrastimulus testing in the ventricle via RV pacing. Extrastimulus testing is a pacing technique in which there is a...