Abstract
A patient with symptomatic persistent atrial fibrillation and recurrences after pulmonary vein isolation (PVI) underwent a second ablation procedure. The PVs were found isolated and the left atrial substrate tissue was mapped. During sinus rhythm, the voltage map resulted in a normal range (>0,5mV) while a map of EGMs durations revealed an area presenting prolonged EGMs (>45 ms) in the anterior region. The activation map of this area demonstrated abnormal conduction and a non-uniform anisotropism when compared with areas in which EGM’s normal durations were recorded. The EGMs duration map may offer additional clinical information on the areas presenting abnormal conduction predisposing arrhythmias maintenance in patients suffering from persistent atrial fibrillation.
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04 April 2022
A Correction to this paper has been published: https://doi.org/10.1007/s10840-022-01194-0
References
Rossi P, Cauti FM, Niscola M, et al. A novel ventricular map of electrograms duration as a method to identify areas of slow conduction for ventricular tachycardia ablation: the VEDUM pilot study. Heart Rhythm. 2021;18(8):1253–60.
Cauti FM, Bianchi S. Rossi P Single-application radiofrequency interruption in a broad isthmus ventricular tachycardia by targeting the longest electrogram visualized using a new customized software (VEDUMap). J Innov Card Rhythm Manag. 2021;12(Suppl 1):41–2.
Ciaccio EJ, Anter E, Coromilas J, et al. Structure and function of the ventricular tachycardia isthmus. Heart Rhythm. 2022;19(1):137–53.
Rossi P, Cauti FM, Polselli M, et al. Map of prolonged electrogram duration to guide atrial substrate ablation for atrial fibrillation recurrence following durable pulmonary vein isolation. J Innov Card Rhythm Manag. 2021;12(Suppl 1):35–6.
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Rossi, P., Cauti, F.M., Polselli, M. et al. Local inhomogeneous conduction and non-uniform anisotropism in a normal voltage atrial map. J Interv Card Electrophysiol 64, 759–760 (2022). https://doi.org/10.1007/s10840-022-01162-8
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DOI: https://doi.org/10.1007/s10840-022-01162-8