Results 31 to 40 of about 58,408 (249)

Temporal Variability in Electrocardiographic Indices in Subjects With Brugada Patterns

Frontiers in Physiology, 2020
IntroductionPatients with Brugada electrocardiographic (ECG) patterns have differing levels of arrhythmic risk. We hypothesized that temporal variations in certain ECG markers may provide additional value for risk stratification.
Sharen Lee, Jiandong Zhou, Tong Liu, Konstantinos P. Letsas, Sandeep S. Hothi, Vassilios S. Vassiliou, Guoliang Li, Adrian Baranchuk, Raymond W. Sy, Raymond W. Sy, Dong Chang, Qingpeng Zhang, Gary Tse, Gary Tse   +13 more
doaj   +1 more source

Repolarization Parameters in Patients with Premature Coronary Artery Disease

, 2019
Objectives:Coronary artery disease (CAD) in young adults is relatively rare. Few data on CAD in young adults are available in the literature. In the current study, repolarization parameters were evaluated in patients with newly diagnosed premature CAD ...
Serkan Çay, Firdevs Ayşenur Ekizler, Fırat Özcan, Serkan Topaloğlu, Özcan Özeke, Dursun Aras, Bahar Tekin Tak, Habibe Kafes   +7 more
core   +1 more source

Emerging Post‐CMOS Hardware Neurons for Brain‐Inspired Computing: Devices, Circuits, and System Integration

Advanced Functional Materials, EarlyView.
The physical realization of artificial neurons is a critical challenge for energy‐efficient neuromorphic computing. This review presents a comprehensive analysis of the evolution of artificial neuron implementations from conventional CMOS to emerging post‐CMOS technologies.
Kannan Udaya Mohanan, Hocheon Yoo, Benoît H. Lessard, Ioannis Kymissis, Chang‐Hyun Kim   +4 more
wiley   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

Advanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari, Jeppe Don, Lasse A. N. Pedersen, John Noee, Rassoul Tabassian   +4 more
wiley   +1 more source

Contribution of Depolarization and Repolarization Changes to J-Wave Generation and Ventricular Fibrillation in Ischemia

Frontiers in Physiology, 2020
Background: Activation delay in ischemic myocardium has been found to contribute to J-wave appearance and to predict ventricular fibrillation (VF) in experimental myocardial infarction.
Alena S. Tsvetkova, Jan E. Azarov, Jan E. Azarov, Jan E. Azarov, Olesya G. Bernikova, Alexey O. Ovechkin, Alexey O. Ovechkin, Marina A. Vaykshnorayte, Marina M. Demidova, Marina M. Demidova, Pyotr G. Platonov, Pyotr G. Platonov   +11 more
doaj   +1 more source

Degradable, Skin‐Conformal Nanocomposite‐Based Bioelectronic Patches for High‐Fidelity Electrophysiology and Gesture‐Controlled Robotics

Advanced Functional Materials, EarlyView.
A degradable, skin‐conformal bioelectronic patch combines a starch‐dominated nanocomposite conductor with a gelatin substrate to enable sensitive strain sensing, high‐fidelity electrocardiography, electromyography, electrooculography, and machine‐learning‐assisted gesture control.
Ming Dong, Hongna Yuan, Shubo Liu, Abdulkadir Sanli, Emiliano Bilotti, Han Zhang, Pietro Cataldi, Karin Hing, Oliver Fenwick, Colin J. Humphreys, Dimitrios G. Papageorgiou   +10 more
wiley   +1 more source

Programming Neuromorphic Plasticity Through Ionic and Electronic Coupling in Organic Electrochemical Transistors

Advanced Functional Materials, EarlyView.
Neuromorphic plasticity in OECTs is governed by the post‐stimulus evolution of coupled ionic and electronic states. Semiconductor chemistry and morphology, electrolyte composition and interfaces, and device architecture regulate ion injection, transport, confinement, and release, shifting responses from rapidly relaxing STP to metastable memory and ...
Inho Lee, Hyoik Jang, Ji Hwan Kim, Jonghyun Won, Namhee Kim, Wonseok Shin, Giwon Lee, Eunho Lee, Daegun Kim, Sungjun Park   +9 more
wiley   +1 more source

T‐wave heterogeneity in standard resting 12‐lead ECGs is associated with 90‐day cardiac mortality in women following emergency department admission: A nested case–control study

Annals of Noninvasive Electrocardiology, 2021
Background We investigated whether T‐wave heterogeneity (TWH) can identify patients who are at risk for near‐term cardiac mortality. Methods A nested case–control analysis was performed in the 888 patients admitted to the Emergency Department (ED) of our
Felipe R. Monteiro, Ana B. Rabelo Evangelista, Bruce D. Nearing, Sofia A. Medeiros, Fernanda Tessarolo Silva, Giovanna C. Pedreira, Edward Ullman, Ernest V. Gervino, Richard L. Verrier   +8 more
doaj   +1 more source

Acetylcholine Reduces L-Type Calcium Current without Major Changes in Repolarization of Canine and Human Purkinje and Ventricular Tissue

Biomedicines, 2022
Vagal nerve stimulation (VNS) holds a strong basis as a potentially effective treatment modality for chronic heart failure, which explains why a multicenter VNS study in heart failure with reduced ejection fraction is ongoing.
Arie O. Verkerk, Illés J. Doszpod, Isabella Mengarelli, Tibor Magyar, Alexandra Polyák, Bence Pászti, Igor R. Efimov, Ronald Wilders, István Koncz   +8 more
doaj   +1 more source

Atom‐Efficient Cerium‐Based Molecular Cages as Biocompatible Reactive Oxygen Scavengers

Advanced Healthcare Materials, EarlyView.
Discrete mixed‐valent cerium molecular cages organize accessible redox centers within confined coordination environments and scavenge superoxide, hydrogen peroxide, and hydroxyl radicals. Encapsulation of the lead cage in an ROS‐responsive DTP nanoplatform enables lesion‐associated delivery, attenuates macrophage oxidative stress and inflammation, and ...
Chao Li, Chunbai Xiang, Ye Xu, Yu Liu, Keze Hong, Fanchu Zeng, Gelin Xu, Zhao‐Xi Wang, Jonathan L. Sessler, Ping Gong   +9 more
wiley   +1 more source