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Surface ECG organization time course analysis along onward episodes of paroxysmal atrial fibrillation

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Surface ECG organization time course analysis along onward episodes of paroxysmal atrial fibrillation

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dc.contributor.author Alcaraz, Raul es_ES
dc.contributor.author Hornero, Fernando es_ES
dc.contributor.author Rieta, J J es_ES
dc.date.accessioned 2014-10-27T19:02:46Z
dc.date.available 2014-10-27T19:02:46Z
dc.date.issued 2011-07
dc.identifier.issn 1350-4533
dc.identifier.uri http://hdl.handle.net/10251/43623
dc.description.abstract The complete understanding of the mechanisms leading to the initiation, maintenance and self-termination of atrial fibrillation (AF) still is an unsolved challenge for cardiac electrophysiology. Studies in which AF has been induced have shown that electrophysiological and structural remodeling of the atria during the arrhythmia could play an important role in the transition from paroxysmal to persistent AF. However, to this day, the time course of the atrial remodeling along onward episodes of non-induced paroxysmal AF has not been investigated yet. In this work, a non-invasive method, based on the regularity estimation of AF through sample entropy (SampEn), has been used to assess the organization evolution along onward episodes of paroxysmal AF. Given that AF organization has been associated to the number of existing wavelets wandering throughout the atrial tissue, SampEn could be considered as a concomitant estimator of atrial remodeling. The achieved results, in close agreement with previous findings obtained from invasive recordings, proved several relevant aspects of arial remodeling. Firstly, a progressive disorganization increase (SampEn increase) along onward episodes of AF has been observed for 63% of the analyzed patients, whereas a stable AF organization degree has been appreciated in the remaining 37%. Next, a positive correlation between episode duration and SampEn has been obtained (R = 0.541, p< 0.01). Finally, a remarkable influence of the fibrillation-free interval, preceding each episode, on the corresponding level of AF organization at the onset of the subsequent AF episode has been observed, with a correlation between these two indices of R = 0.389 (p< 0.01). As a consequence, it could be considered that atrial electrophysiological dynamics that occur along onward paroxysmal AF episodes are reflected and can be quantified from ECG recordings through non-invasive organization estimation. © 2010 IPEM. es_ES
dc.description.sponsorship This work was supported by the projects TEC2010-20633 from the Spanish Ministry of Science and Innovation, PII2C09-0224-5983 and PPII11-0194-8121 from Junta de Comunidades de Castilla La Mancha. en_EN
dc.language Español es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Ministry of Science and Innovation [TEC2010-20633] es_ES
dc.relation Junta de Comunidades de Castilla La Mancha [PII2C09-0224-5983; PPII11-0194-8121] es_ES
dc.relation.ispartof Medical Engineering and Physics es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Atrial fibrillation es_ES
dc.subject Electrocardiogram es_ES
dc.subject Main atrial wave es_ES
dc.subject Organization es_ES
dc.subject Sample entropy es_ES
dc.subject Successive paroxysmal episodes es_ES
dc.subject Electrocardiography es_ES
dc.subject Electrochromic devices es_ES
dc.subject Electrophysiology es_ES
dc.subject Entropy es_ES
dc.subject Estimation es_ES
dc.subject Tissue es_ES
dc.subject Diseases es_ES
dc.subject Adult es_ES
dc.subject Aged es_ES
dc.subject Article es_ES
dc.subject Atrial remodeling es_ES
dc.subject Clinical article es_ES
dc.subject Controlled study es_ES
dc.subject Disease duration es_ES
dc.subject Echocardiography es_ES
dc.subject Female es_ES
dc.subject Heart atrium fibrillation es_ES
dc.subject Heart surgery es_ES
dc.subject Human es_ES
dc.subject Male es_ES
dc.subject Paroxysmal heart atrium fibrillation es_ES
dc.subject Priority journal es_ES
dc.subject Structure analysis es_ES
dc.subject Time series analysis es_ES
dc.subject Heart Atria es_ES
dc.subject Humans es_ES
dc.subject Time Factors es_ES
dc.subject.classification TECNOLOGIA ELECTRONICA es_ES
dc.title Surface ECG organization time course analysis along onward episodes of paroxysmal atrial fibrillation es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.medengphy.2010.12.014
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica es_ES
dc.description.bibliographicCitation Alcaraz, R.; Hornero, F.; Rieta, JJ. (2011). Surface ECG organization time course analysis along onward episodes of paroxysmal atrial fibrillation. Medical Engineering and Physics. 33(5):597-603. doi:10.1016/j.medengphy.2010.12.014 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.medengphy.2010.12.014 es_ES
dc.description.upvformatpinicio 597 es_ES
dc.description.upvformatpfin 603 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 33 es_ES
dc.description.issue 5 es_ES
dc.relation.senia 216773


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