Potential distributions and excitation time maps recorded with high spatial resolution from the entire ventricular surface of exposed dog hearts

作者: B. Taccardi , R.L. Lux , P.R. Ershler , R.S. MacLeod , C. Zabawa

DOI: 10.1109/CIC.1992.269462

关键词: Materials scienceVentricular pacingAtrial pacingBiomedical engineeringElectrocardiographySurface (mathematics)ElectrodeSurface waveImage resolutionExcitation

摘要: The authors recorded potential maps, excitation and recovery time maps from the entire ventricular surface of exposed dog hearts using an epicardial sock with 630 electrodes spaced 4 mm, during atrial pacing or at various intramural depths. Results made it possible to describe complex distributions isochrones. Ventricular produced five areas characterized by different densities isochrone lines, both recovery. Potential revealed times locations up 17 breakthroughs enabled localization a number electrical events that were difficult detect previously used electrode arrays. >

参考文章(9)
M J Burgess, R L Lux, P R Ershler, R Menlove, Determination of transmural location of onset of activation from cardiac surface electrograms Circulation. ,vol. 82, pp. 1335- 1342 ,(1990) , 10.1161/01.CIR.82.4.1335
James P. Keener, An eikonal-curvature equation for action potential propagation in myocardium. Journal of Mathematical Biology. ,vol. 29, pp. 629- 651 ,(1991) , 10.1007/BF00163916
D W Frazier, W Krassowska, P S Chen, P D Wolf, N D Danieley, W M Smith, R E Ideker, Transmural activations and stimulus potentials in three-dimensional anisotropic canine myocardium. Circulation Research. ,vol. 63, pp. 135- 146 ,(1988) , 10.1161/01.RES.63.1.135
S Watabe, B Taccardi, R L Lux, P R Ershler, Effect of nontransmural necrosis on epicardial potential fields. Correlation with fiber direction. Circulation. ,vol. 82, pp. 2115- 2127 ,(1990) , 10.1161/01.CIR.82.6.2115
PIERO COLLI FRANZONE, LUCIANO GUERRI, BRUNO TACCARDI, Spread of excitation in a myocardial volume: simulation studies in a model of anisotropic ventricular muscle activated by point stimulation. Journal of Cardiovascular Electrophysiology. ,vol. 4, pp. 144- 160 ,(1993) , 10.1111/J.1540-8167.1993.TB01219.X
G Arisi, E Macchi, S Baruffi, S Spaggiari, B Taccardi, Potential fields on the ventricular surface of the exposed dog heart during normal excitation. Circulation Research. ,vol. 52, pp. 706- 715 ,(1983) , 10.1161/01.RES.52.6.706
V. S. Markin, A. L. Muler, Electrical properties of anisotropic nerve-muscle syncytia-III. Steady form of the excitation front Biophysics. ,vol. 22, pp. 699- 704 ,(1977)