Results 61 to 70 of about 80,243 (251)
Mitochondrial Oxidative Stress Mediates Bradyarrhythmia in Leigh Syndrome Mitochondrial Disease Mice
Antioxidants, 2023 Mitochondrial oxidative stress has been implicated in aging and several cardiovascular diseases, including heart failure and cardiomyopathy, ventricular tachycardia, and atrial fibrillation.
Biyi Chen +4 more
doaj +1 more source
Edge-aware Hard Clustering Graph Pooling for Brain Imaging [PDF]
arXiv, 2023 Graph Convolutional Networks (GCNs) can capture non-Euclidean spatial dependence between different brain regions. The graph pooling operator, a crucial element of GCNs, enhances the representation learning capability and facilitates the acquisition of abnormal brain maps.
arxiv
Genetic Complexity of Sinoatrial Node Dysfunction
Frontiers in Genetics, 2021 The pacemaker cells of the cardiac sinoatrial node (SAN) are essential for normal cardiac automaticity. Dysfunction in cardiac pacemaking results in human sinoatrial node dysfunction (SND).
Michael J. Wallace +16 more
doaj +1 more source
If players are sparse social dilemmas are too: Importance of percolation for evolution of cooperation [PDF]
Sci. Rep. 2 (2012) 369, 2012 Spatial reciprocity is a well known tour de force of cooperation promotion. A thorough understanding of the effects of different population densities is therefore crucial. Here we study the evolution of cooperation in social dilemmas on different interaction graphs with a certain fraction of vacant nodes.
arxiv +1 more source
Devices for Prevention of Atrial Tachyarrhythmias [PDF]
, 2004 Atrial fibrillation (AF) is the most frequent sustained cardiac arrhythmia in clinical practice and, although its importance has been underestimated even in recent years, we are now becoming aware of its clinical transcendence1,2,3.
Diaz, José Antonio Fernández +7 more
core +2 more sources
Altered excitation-contraction coupling in human chronic atrial fibrillation [PDF]
, 2012 This review focuses on the (mal)adaptive processes in atrial excitation-contraction coupling occurring in patients with chronic atrial fibrillation. Cellular remodeling includes shortening of the atrial action potential duration and effective refractory ...
Grandi, E., Pandit, S.V., Workman, A.J.
core +1 more source
Discrimination of the Healthy and Sick Cardiac Autonomic Nervous System by a New Wavelet Analysis of Heartbeat Intervals [PDF]
, 1998 We demonstrate that it is possible to distinguish with a complete certainty between healthy subjects and patients with various dysfunctions of the cardiac nervous system by way of multiresolutional wavelet transform of RR intervals. We repeated the study
Ashkenazy, Y. +5 more
core +2 more sources
Journal of Arrhythmia, 2012 We report on a 64-year-old female patient who underwent cardiac surgery for left atrial myxoma, using the superior septal approach with large atrial septal wall resection and patch closure. The superior septal approach is reported to be a relatively safe
Susumu Miyazaki +13 more
doaj +1 more source
Diastolic And Systolic Right Ventricular Dysfunction Precedes Left Ventricular Dysfunction In Patients Paced From Right Ventricular Apex [PDF]
, 2006 Background: Cardiac dysfunction after right ventricular (RV) apical pacing is well known but its extent, time frame of appearance and individual effect on left ventricular (LV), RV systolic and diastolic parameters has not evaluated in a systematic ...
Bansal, Sandeep +7 more
core