Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Greg Walcott"'
Autor:
Marye J Gleva, Joseph Sullivan, Thomas C Crawford, Greg Walcott, Ulrika Birgersdotter-Green, Kelley R Branch, Rahul N Doshi, Kaisa Kivilaid, Kelly Brennan, Ron K Rowbotham, Laura M Gustavson, Jeanne E Poole
Publikováno v:
PLoS ONE, Vol 18, Iss 3, p e0281340 (2023)
IntroductionThe wearable cardioverter defibrillator (WCD) is used to protect patients at risk for sudden cardiac arrest. We examined defibrillation efficacy and safety of a biphasic truncated exponential waveform designed for use in a contemporary WC
Externí odkaz:
https://doaj.org/article/c9c332b0a79f459ebeaf72b189a5c3df
Autor:
Jiajie Yan, Steven M. Pogwizd, Greg Walcott, Jian Huang, Cheryl R. Killingsworth, Yujie Zhu, Xun Ai, Silvio H. Litovsky
Publikováno v:
J Mol Cell Cardiol
Background Both gap junctional remodeling and interstitial fibrosis have been linked to impaired electrical conduction velocity (CV) and fatal ventricular arrhythmias in nonischemic heart failure (HF). However, the arrhythmogenic role of the ventricu
Autor:
Pamela C. Powell, Cheryl R. Killingsworth, Louis J. Dell'Italia, Himanshu Gupta, Chih-Chang Wei, Thomas S. Denney, Greg Walcott, Ravi V. Desai, Ke Shi, James D. Gladden, Betty Pat, Mustafa I. Ahmed, Tsunefumi Kobayashi, Abdelkarim Sabri, Yuanwen Chen, Henk Granzier, Naoki Hase, Ahsan Husain, Junying Zheng, A. Ray Dillon, Michael Tillson
Publikováno v:
Circulation. 122:1488-1495
Background— The left ventricular (LV) dilatation of isolated mitral regurgitation (MR) is associated with an increase in chymase and a decrease in interstitial collagen and extracellular matrix. In addition to profibrotic effects, chymase has signi
Autor:
Jack M. Rogers, Raymond E. Ideker, William M. Smith, Philip L. Johnson, Jonathan C. Newton, Dennis L. Rollins, Kumaraswamy Nanthakumar, Jian Huang, Robert K. Justice, Greg Walcott
Publikováno v:
Circulation Research. 91:733-740
It has been hypothesized that during ventricular fibrillation (VF), the fastest activating region, the dominant domain, contains a stable reentrant circuit called a mother rotor. This hypothesis postulates that the mother rotor spawns wavefronts that
Autor:
Darrel P. Francis, Tom Wong, Vias Markides, Sandeep Panikker, Renu Virmani, Kenichi Sakakura, Greg Walcott, H. Tom McElderry, Frank D. Kolodgie
Publikováno v:
Heart rhythm. 12(1)
Background Left atrial appendage (LAA) electrical isolation is reported to improve atrial fibrillation ablation outcomes. However, loss of mechanical function may increase thromboembolic risk. Objective The aim of this study was to evaluate the feasi
Autor:
Betty Pat, Cheryl R. Killingsworth, James D. Gladden, Himanshu Gupta, Louis J. Dell'Italia, Pamela C. Powell, Greg Walcott, Thomas S. Denney, A. Ray Dillon, Michael Tillson, Ravi V. Desai, Yuanwen Chen
Publikováno v:
Journal of cardiac failure. 16(9)
Mast cells are increased in isolated mitral regurgitation (MR) in the dog and may mediate extracellular matrix loss and left ventricular (LV) dilatation. We tested the hypothesis that mast cell stabilization would attenuate LV remodeling and improve
Autor:
Derek J. Dosdall, Cheryl R. Killingsworth, Peter G. Robertson, Jack M. Rogers, Raymond E. Ideker, Greg Walcott, Paul B. Tabereaux, Jong Kim, William M. Smith
Publikováno v:
Circulation. 116(10)
Background— The roles of Purkinje fibers (PFs) and focal wave fronts, if any, in the maintenance of ventricular fibrillation (VF) are unknown. If PFs are involved in VF maintenance, it should be possible to map wave fronts propagating from PFs into
Autor:
Jian Huang, Cheryl R. Killingsworth, Greg Walcott, Raymond E. Ideker, Jack M. Rogers, Sharon B. Melnick
Publikováno v:
Heart rhythm. 2(7)
Background A single stationary mother rotor has been hypothesized to be responsible for maintenance of ventricular fibrillation (VF) in the guinea pig. Previous studies have pointed to the ventricular septum as a possible location for a mother rotor
Autor:
Steven Girouard, Bruce H. KenKnight, Bruce A. Tockman, Greg Walcott, Lili Liu, Joseph M. Pastore, Julio C. Spinelli
Publikováno v:
American journal of physiology. Heart and circulatory physiology. 282(6)
Positive responses to left (LV) and biventricular (BV) stimulation observed in heart failure patients with left bundle branch block (LBBB) suggest a possible mechanism of LV resynchronization. An anesthetized canine LBBB model was developed using rad
Autor:
Tom Castellano, Greg Walcott, Wade A. Bowe, Kenneth Ellenbogen, Hugh Calkins, Marshall L. Sherman, John A. Simpson, G. Neal Kay, Jeffrey A. Hall
Publikováno v:
The American journal of cardiology. 83(5B)
Increased attention is now being focused on developing new technologies to cure atrial fibrillation using catheter ablation techniques. The performance of a MAZE-type procedure using standard catheter ablation technologies is arduous and is associate