Functional Substrate Mapping Using Atrial Decrement Evoked Potentials to Predict Critical Isthmus of Atrial Tachycardia

Figures

• 

  FIGURE 1. Voltage map during sinus rhythm in normal range (0.1–0.5 mV) (A) and DEEP mapping revealing low voltage regions with prolongation in EGMs on the anterior wall with atrial extrastimulus (B). [Colour figure can be viewed at wileyonlinelibrary.com]

• 

  FIGURE 2. Atrial ILAM during DEEP mapping elucidating functional substrate by prolongation in EGMs with DZs (A). Atrial EGMs demonstrating decrement of >10 ms after last beat (S3) compared with the previous beat (S2) (B). Atrial ILAM during sinus rhythm revealed no DZs (C). [Colour figure can be viewed at wileyonlinelibrary.com]

• 

  FIGURE 3. Activation mapping of atypical atrial tachycardia demonstrating localized reentry on the anterior wall (A). Low‐voltage–high PF regions emphasized on the anterior wall, colocalized with CI of AT (B). Termination of AT in the anterior wall with RF ablation (C–D). [Colour figure can be viewed at wileyonlinelibrary.com]