A quantitative measurement of spatial order in ventricular fibrillation

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dc.creatorBayly, P. V.
dc.creatorJohnson, E. E.
dc.creatorWolf, P. D.
dc.creatorGreenside, H. S.
dc.creatorSmith, W. M.
dc.creatorIdeker, R. E.
dc.date1993-07-18
dc.date.accessioned2026-07-07T09:15:57Z
dc.date.available2026-07-07T09:15:57Z
dc.descriptionAs an objective measurement of spatial order in ventricular fibrillation (VF), spatial correlation functions and their characteristic lengths were estimated from epicardial electrograms of pigs in VF. The correlation length of the VF in pigs was found to be approximately 4-10 mm, varying as fibrillation progressed. The degree of correlation decreased in the first 4 seconds after fibrillation then increased over the next minute. The correlation length is much smaller than the scale of the heart, suggesting that many independent regions of activity exist on the epicardium at any one time. On the other hand, the correlation length is 4 to 10 times the interelectrode spacing, indicating that some coherence is present. These results imply that the heart behaves during VF as a high-dimensional, but not random, system involving many spatial degrees of freedom, which may explain the lack of convergence of fractal dimension estimates reported in the literature. Changes in the correlation length also suggest that VF reorganizes slightly in the first minute after an initial breakdown in structure.
dc.description20 pages with 13 Postscript figures. To appear in the J. Cardiovascular Electrophysiology, 1993
dc.identifierhttps://arxiv.org/abs/patt-sol/9307001
dc.identifierhttp://arxiv.org/abs/patt-sol/9307001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/153194
dc.subjectPattern Formation and Solitons
dc.subjectQuantitative Biology
dc.titleA quantitative measurement of spatial order in ventricular fibrillation
dc.typetext

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