Search Results - "Davidenko, Jorge M."

Spatiotemporal periodicity during atrial fibrillation in the isolated sheep heart by SKANES, A. C, MANDAPATI, R, BERENFELD, O, DAVIDENKO, J. M, JALIFE, J

“…The activation patterns that underlie the irregular electrical activity during atrial fibrillation (AF) have traditionally been described as disorganized or…”
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Stationary and drifting spiral waves of excitation in isolated cardiac muscle by Davidenko, Jorge M, Pertsov, Arcady V, Salomonsz, Remy, Baxter, William, Jalife, José

“…Excitable media can support spiral waves rotating around an organizing centre. Spiral waves have been discovered in different types of autocatalytic chemical…”
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Nonstationary vortexlike reentrant activity as a mechanism of polymorphic ventricular tachycardia in the isolated rabbit heart by GRAY, R. A, JALIFE, J, PANFILOV, A, BAXTER, W. T, CABO, C, DAVIDENKO, J. M, PERTSOV, A. M

“…Ventricular tachycardia may result from vortexlike reentrant excitation of the myocardium. Our general hypothesis is that in the structurally normal heart,…”
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Microvolt T-Wave Alternans and the Risk of Death or Sustained Ventricular Arrhythmias in Patients With Left Ventricular Dysfunction by Bloomfield, Daniel M., Bigger, J. Thomas, Steinman, Richard C., Namerow, Pearila B., Parides, Michael K., Curtis, Anne B., Kaufman, Elizabeth S., Davidenko, Jorge M., Shinn, Timothy S., Fontaine, John M.

“…Microvolt T-Wave Alternans and the Risk of Death or Sustained Ventricular Arrhythmias in Patients With Left Ventricular Dysfunction Daniel M. Bloomfield, J…”
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Technical features of a CCD video camera system to record cardiac fluorescence data by BAXTER, W. T, DAVIDENKO, J. M, LOEW, L. M, WUSKELL, J. P, JALIFE, J

“…A charge-coupled device (CCD) camera was used to acquire movies of transmembrane activity from thin slices of sheep ventricular epicardial muscle stained with…”
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Mechanisms of Cardiac Fibrillation by Gray, Richard A., Jalife, José, Panfilov, Alexandre V., Baxter, William T., Cabo, Cándido, Davidenko, Jorge M., Pertsov, Arkady M., Hogeweg, Paulien, Winfree, Arthur T.

“…One hypothesis of the mechanisms of cardiac fibrillation proposes that three-dimensional rotors of electrical activity destabilize when the heart tissue…”
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Spiral Waves of Excitation Underlie Reentrant Activity in Isolated Cardiac Muscle by Pertsov, Arkady M, Davidenko, Jorge M, Salomonsz, Remy, Baxter, William T, Jalife, José

“…The mechanism of reentrant ventricular tachycardia was studied in computer simulations and in thin (≊20×20×0.5-mm) slices of dog and sheep ventricular…”
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Wave-Front Curvature as a Cause of Slow Conduction and Block in Isolated Cardiac Muscle by Cabo, Candido, Pertsov, Arkady M, Baxter, William T, Davidenko, Jorge M, Gray, Richard A, Jalife, José

“…We have investigated the role of wave-front curvature on propagation by following the wave front that was diffracted through a narrow isthmus created in a…”
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Optical Mapping of Drug-Induced Polymorphic Arrhythmias and Torsade de Pointes in the Isolated Rabbit Heart by Asano, Yukio, Davidenko, Jorge M., Baxter, William T., Gray, Richard A., Jalife, José

“…Objectives. This study sought to 1) test the hypothesis that in the setting of bradycardia and drug-induced action potential prolongation, multiple foci of…”
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Effects of Pacing on Stationary Reentrant Activity: Theoretical and Experimental Study by Davidenko, Jorge M, Salomonsz, Remy, Pertsov, Arkady M, Baxter, William T, Jalife, Jose

“…It is well known that electrical pacing may either terminate or change the rate and/or ECG appearance of reentrant ventricular tachycardia. However, the…”
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Spiral Waves in Two-Dimensional Models of Ventricular Muscle: Formation of a Stationary Core by Beaumont, Jacques, Davidenko, Nicolas, Davidenko, Jorge M., Jalife, José

“…Previous experimental studies have clearly demonstrated the existence of drifting and stationary electrical spiral waves in cardiac muscle and their…”
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Vortex shedding as a precursor of turbulent electrical activity in cardiac muscle by Cabo, C., Pertsov, A.M., Davidenko, J.M., Baxter, W.T., Gray, R.A., Jalife, J.

“…In cardiac tissue, during partial blockade of the membrane sodium channels, or at high frequencies of excitation, inexcitable obstacles with sharp edges may…”
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Understanding Ventricular Fibrillation by Quantifying the Complexity of Activation Patterns by DAVIDENKO, JORGE M., PERTSOV, ARKADY M.

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Sustained Vortex-Like Waves in Normal Isolated Ventricular Muscle by Davidenko, Jorge M., Kent, Paul F., Chialvo, Dante R., Michaels, Donald C., Jalife, Jose

“…Sustained reentrant excitation may be initiated in small (20 x 20 x <0.6 mm) preparations of normal ventricular muscle. A single appropriately timed premature…”
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The Doppler effect as a cause for irregular electrocardiograms in reentrant ventricular arrhythmias by Gray, Richard A., Jalife, José, Baxter, William T., Cabo, Candido, Davidenko, Jorge M., Pertsov, Arkady

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Optical mapping of drug-induced torsades de pointes in the isolated rabbit heart by Asano, Yukio, Davidenko, Jorge M., Baxter, William T., Gray, Richard A., Jalife, José

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Electrotonic modulation of the T wave and cardiac memory by Rosenbaum, Mauricio B., Blanco, Horacio H., Elizari, Marcelo V., Lázzari, Julio O., Davidenko, Jorge M.

“…Alterations in the sequence of ventricular activation (left bundle branch block occurring spontaneously or induced by atrial pacing; right ventricular pacing)…”
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Measurements of curvature in an ionic model of cardiac tissu by Cabo, Cándido, Pertsov, Arcady M., Baxter, William T., Davidenko, Jorge M., Jalife, José

“…To quantify the effect of curvature on propagation in ventricular cardiac muscle we selected two cases of propagation where wavefronts of pronounced curvature…”
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Electrotonic inhibition and active facilitation of excitability in ventricular muscle by Davidenko, J M, Delmar, M, Beaumont, J, Michaels, D C, Lorente, P, Jalife, J

“…The effects of subthreshold electrical pulses on the response to subsequent stimulation have been described previously in experimental animal studies as well…”
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Electrophysiological Mechanisms Underlying Rate-Dependent Changes of Refractoriness in Normal and Segmentally Depressed Canine Purkinje Fibers: The Characteristics of Post-Repolarization Refractoriness by Davidenko, Jorge M, Antzelevitch, Charles

“…Tissues from diseased hearts are known to exhibit post-repolarization refractoriness and rate-dependent changes of the refractory period that are often…”
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