Electrogram Interpretation – 10

This week’s electrogram interpretation:    Describe the activation pattern in the following electrogram.  What is the most likely rhythm?          Answer Left Atrial Flutter    The activation sequence of the CS is from proximal to distal. Based on just...

Electrogram Interpretation – 5

This week’s electrogram interpretation:    What is observed in the following electrogram?  The ablation catheter is located in the CTI.      Answer Concealed Entrainment of Right Atrial Flutter   The rhythm on the right half of the electrogram is...

Electrogram Interpretation – 3

This week’s electrogram interpretation:    After ablation of the CTI, the following maneuver was performed. What is observed? Answer Lateral-to-Medial Block The cavotricuspid isthmus (CTI) if ablated for typical right atrial flutter. After ablation, pacing...