From recent studies of atrial fibrillation (AF) in animals andhumans it appears that improvement in the success rate of ablation maybe achieved by evaluating the local electrophysiological properties ofthe atrial tissue. The aim of this study was to develop an automatedmethod 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 localatrial period (AP) and number of occurrence (NO) were calculated fromeach electrogram. Organization of the whole atrium was estimated bybidimensional interpolation of the AP and NO measurements. AP and NOmaps allowed to identify areas with different degree of organization. Alarger database is needed to assess the clinical value of our approach
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