Identification of cavotricuspid isthmus voltage patterns in typical atrial flutter ablation
Francisco Ribes1, Ángel Ferrero-de-Loma-Osorio1, Juan Miguel Sánchez-Gómez1
1Department of Cardiology, Arrhythmia Unit Hospital Clínico Universitario Valencia Valencia Spain.
Background:
Electroanatomical mapping is an essential tool in the ablation of typical AFL.
Objectives:
To identify the existence of voltage patterns in the CTI voltage maps and their relevance for typical AFL ablation.
Methods:
A voltage map of the CTI was made prior to ablation, identifying the areas of maximum voltage and their location along the CTI, allowing classification into patterns according to their distribution. A stepwise ablation approach targeting the areas of maximum voltage was conducted. The ablation characteristics were compared based on the pattern obtained.
Results:
Two voltage patterns were identified, with differences in ablation time to bidirectional CTI block. No complications occurred.
Conclusions:
Voltage mapping identifies patterns in the CTI with implications for typical AFL ablation.
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