Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Bonnie B. Punske"'
Autor:
Faraz Kerendi, David Tschopp, Alexandra Maningat, Brannon Hyde, Paul Coffeen, Bonnie B Punske
Publikováno v:
Circulation. 144
Introduction: Endocardial catheter ablation has suboptimal effectiveness and durability in patients with longstanding persistent atrial fibrillation (LSPAF). Hybrid convergent ablation combines epicardial and endocardial ablation to create a transmur
Autor:
Bonnie B. Punske, E. Dale Abel, Martin Tristani-Firouzi, Angelica Lopez-Izquierdo, Adam R. Wende, Renata O. Pereira
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 306:H747-H754
Diabetes mellitus increases the risk for cardiac dysfunction, heart failure, and sudden death. The wide array of neurohumoral changes associated with diabetes pose a challenge to understanding the roles of specific pathways that alter cardiac functio
Autor:
Kwanghyun Sohn, Frank B. Sachse, Alonso P. Moreno, Adam R. Wende, E. Dale Abel, Bonnie B. Punske
Publikováno v:
Experimental Physiology. 98:746-757
Insulin resistance, which characterizes type 2 diabetes, is associated with reduced translocation of glucose transporter 4 (GLUT4) to the plasma membrane following insulin stimulation, and diabetic patients with insulin resistance show a higher incid
Publikováno v:
Journal of Electrocardiology. 40:S150-S159
Background The mechanisms for the antiarrhythmogenic effects of preconditioning in ischemic hearts, although well demonstrated, are not clear. We measured indices of activation and repolarization using data from a high-resolution epicardial sock elec
Autor:
Sheldon E. Litwin, Ping Hu, Bonnie B. Punske, Maria L. Valencik, John A. McDonald, Dongfang Zhang
Publikováno v:
Circulation Research. 99:1403-1410
Integrins mechanically link the cytoskeleton to the extracellular matrix in cardiac myocytes and are thereby involved in mechanotransduction. Integrins appear to be necessary for cardiac myocyte hypertrophy. To determine the effect of increased integ
Publikováno v:
IEEE Transactions on Biomedical Engineering. 52:1823-1831
A source of error in most of the existing catheter cardiac mapping approaches is that they are not capable of acquiring epicardial potentials even though arrhythmic substrates involving epicardial and subepicardial layers account for about 15% of the
Autor:
Bruno Taccardi, Xavier Tricoche, Frank B. Sachse, Piero Colli-Franzone, Bonnie B. Punske, Luca F. Pavarino, Christine Zabawa
Publikováno v:
Journal of Electrocardiology. 38:131-137
Background There are no published data showing the three-dimensional sequence of repolarization and the associated potential fields in the ventricles. Knowledge of the sequence of repolarization has medical relevance because high spatial dispersion o
Autor:
Maria L. Valencik, John A. McDonald, B.W. Steadman, Bruno Taccardi, Philip R. Ershler, Alice H. England, Bonnie B. Punske, Sheldon E. Litwin
Publikováno v:
Journal of Electrocardiology. 38:40-44
Background Epicardial potentials reveal the strong effects of fiber anisotropy, rotation, imbrication, and coupling on propagation in the intact heart. From the patterns of the surface potentials, we can obtain information about the local fiber orien
Autor:
Bonnie B. Punske, Rob S. MacLeod, Robert L. Lux, Marc S. Fuller, Bruno Taccardi, Philip R. Ershler
Publikováno v:
Journal of Electrocardiology. 32:153-157
In experimental studies using Langendorff perfused, isolated canine hearts immersed in a torso-shaped electrolytic tank we studied repolarization and its dispersion using direct epicardial measurements and newly derived, noninvasive body surface indi
Autor:
R. Hren, Bonnie B. Punske
Publikováno v:
Journal of Electrocardiology. 31:135-144
The precise localization of ventricular tachycardia (VT) foci is a prerequisite for the successful radiofrequency catheter ablation in patients. The purpose of this study was to systematically quantify over what distance adjacent sites in the right v