Key result
Mapping the right atrium using multielectrode basket catheters successfully identified areas with different degrees of organization in 5 patients with atrial fibrillation.
Observational (n=5)
An automated mapping method using multielectrode basket catheters can successfully identify areas of varying electrophysiological organization in the right atrium of patients with atrial fibrillation.
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Supports basket catheter mapping feasibility in AF; hypothesis-generating and should not yet change practice.
From recent studies of atrial fibrillation (AF) in animals and humans it appears that improvement in the success rate of ablation may be achieved by evaluating the local electrophysiological properties of the atrial tissue. The aim of this study was to develop an automated method for the assessment of the organization of the whole right atrium. Bipolar electrograms were obtained from multielectrode basket catheters (MBC) in the right atrium in 5 informed patients with AF. The local atrial period (AP) and number of occurrence (NO) were calculated from each electrogram. Organization of the whole atrium was estimated by bidimensional interpolation of the AP and NO measurements. AP and NO maps allowed to identify areas with different degree of organization. A larger database is needed to assess the clinical value of our approach.
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Barbaro et al. (2003) conducted an observational in Atrial fibrillation (n=5). Multielectrode basket catheters (MBC) was evaluated on Assessment of the organization of the whole right atrium. Mapping the right atrium using multielectrode basket catheters successfully identified areas with different degrees of organization in 5 patients with atrial fibrillation.
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