Electrogram Interpretation – 19

This week’s electrogram interpretation:  The following electrogram was recorded during an RF PVI ablation. The ablation catheter and HD Grid mapping catheter are located in the LSPV at the time of this recording.  The CS and His catheters are in their standard...

Electrogram Interpretation – 18

This week’s electrogram interpretation:    The following electrogram was recorded during an RF PVI ablation. The ablation catheter was located/ablating on the ridge between the LAA & LSPV at the time of this recording.  What is observed?      ...

Electrogram Interpretation – 17

This week’s electrogram interpretation:    What is observed throughout the following electrogram?  Two quadripolar catheters are being utilized. One is locate near the His bundle (although no H is observed), and the second is in the RV.  *Bonus – Are...

Electrogram Interpretation – 16

This week’s electrogram interpretation:    What is observed with the third impulse in the following electrogram?   The PV catheter is placed in the LSPV.       Answer Exit Block       PVI or pulmonary vein isolation is performed to treat...

Electrogram Interpretation – 14

This week’s electrogram interpretation:    What is observed in the following electrogram?        Answer Loss of Capture   With a quick look, it may appear that you are looking at AV block or Wenckebach… this is not the case. Before...

Electrogram Interpretation – 15

This week’s electrogram interpretation:    What is observed in the following electrogram?    The channels labeled A – D (green, teal, red, yellow) are recording from the HD grid (high-density mapping catheter) in the LIPV. This was recorded while...