Electrogram Interpretation – 20

This week’s electrogram interpretation:  A 22-year-old male came into the EP lab with complaints of palpitations. During the EP study, the following rhythm was induced.  The HRA, His, CS, and RV catheters are in their standard positions. #1  – What rhythm...

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 – 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 – 12

  This electrogram was recorded during a cryoballoon PVI procedure. The PV catheter (Achieve) is in the LIPV. What rhythm is observed in the following electrogram?  1.  Atrial Tachycardia 2.  Atrial Fibrillation 3.  Sinus Rhythm 4.  Junctional Answer Sinus Rhythm...

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.   ...