Key result
Two distinct CTI voltage mapping patterns link to different ablation times during atrial flutter ablation.
Why the study?
Electroanatomical mapping is an essential tool in typical AFL ablation, but the existence of voltage patterns in CTI voltage maps and their relevance remained to be identified.
Does targeting areas of maximum voltage based on CTI voltage patterns affect ablation time in typical atrial flutter?
Observational
Does targeting areas of maximum voltage based on CTI voltage patterns affect ablation time in typical atrial flutter?
Voltage mapping identifies distinct patterns in the cavotricuspid isthmus that correlate with differences in ablation time to bidirectional block during typical atrial flutter ablation.
Cavotricuspid isthmus voltage patterns may guide ablation strategy in typical flutter; leaves open whether targeted approaches shorten time to bidirectional block.
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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Ribes et al. (2024) conducted an observational in Typical atrial flutter. Cavotricuspid isthmus voltage mapping and stepwise ablation vs. Comparison between identified voltage patterns was evaluated on Ablation time to bidirectional CTI block. Cavotricuspid isthmus voltage mapping identified two distinct patterns that were associated with differences in ablation time to bidirectional block during typical atrial flutter ablation.
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