Results 61 to 70 of about 192,727 (304)

Beyond Transconductance: Cell‐Polymer Coupling Determines Fidelity in Action Potential Recording via Electrolyte‐Gated Polymer Transistors

Advanced Science, EarlyView.
High electrical performance alone does not guarantee efficient bioelectronic signal transduction. Despite excellent mixed ionic‐electronic conduction, recordings from cardiomyocytes reveal that p(g2T‐TT)‐based OECTs predominantly transduce field potential FP‐like signals due to weak cell‐polymer coupling.
Giulia Zoe Zemignani, Elena Mancinelli, Gabriele Tullii, Aleksandr Khudiakov, Cristiano Bortolotti, Shubham Tanwar, Peter J. Schwartz, Luca Sala, Maria Rosa Antognazza, Mario Caironi, Adrica Kyndiah   +10 more
wiley   +1 more source

A CLINICAL REVIEW OF VENTRICULAR ARRHYTHMIAS IN PATIENTS WITH CONGESTIVE HEART FAILURE

European Medical Journal Cardiology, 2019
Heart failure is an increasingly prevalent condition, which is associated with ventricular arrhythmias. The reduction in cardiac pumping efficiency leads to the activation of several compensatory mechanisms.
Ali B.A.K. Al-Hadithi, Noel G. Boyle
doaj   +1 more source

Connexin 43‐Enriched Vesicles Improve Synchronization in hiPSC‐Derived Cardiomyocytes

Advanced Science, EarlyView.
Plasma membrane‐derived Connectosomes enriched in connexin‐43 are produced from donor hiPSCs and applied to hiPSC‐derived cardiomyocytes (hiPSC‐CMs). Connexin‐43 channels on Connectosomes remain functional, strengthening intercellular electrochemical coupling and increasing network synchronization over time.
Nima Momtahan, Anna K. McClain, Andrea Trementozzi, Sogu Sohn, Lingxia Qiao, Chi Zhao, Padmini Rangamani, Jeanne C. Stachowiak, Janet Zoldan   +8 more
wiley   +1 more source

β-adrenergic inhibition prevents action potential and calcium handling changes during regional myocardial ischemia [PDF]

, 2017
β-adrenergic receptor (β-AR) blockers may be administered during acute myocardial infarction (MI), as they reduce energy demand through negative chronotropic and inotropic effects and prevent ischemia-induced arrhythmogenesis. However, the direct effects
Domondon, Philip, Habecker, Beth A., Lang, Di, Murphy, Shannon R., Myles, Rachel C., Ripplinger, Crystal M., Wang, Lianguo, Wang, Zhen   +7 more
core   +3 more sources

Discovering Interpretable Semantics from Radio Signals for Contactless Cardiac Monitoring

Advanced Science, EarlyView.
This study presents a semantic representation framework for clinically interpretable cardiac monitoring from contactless radio signals. It formulates radio semantic learning as an information‐bottleneck problem and approximates the objective via intra‐modal compression and cross‐modal alignment, structuring radio measurements into meaningful semantic ...
Jinbo Chen, Haoyu Wang, Guixin Xu, Yuqin Yuan, Xinmeng Cai, Zhengwu Wei, Dongheng Zhang, Qibin Sun, Tianwei Zhang, Cuntai Guan, Yan Chen   +10 more
wiley   +1 more source

Regional differences in APD restitution can initiate wavebreak and re-entry in cardiac tissue: A computational study [PDF]

, 2005
Background Regional differences in action potential duration (APD) restitution in the heart favour arrhythmias, but the mechanism is not well understood.
A Garfinkel, A Karma, A Panfilov, AT Winfree, BH van Huysduynen, C Antzelevitch, CS Kuo, D Noble, DW Frazier, EM Cherry, F Fenton, F Xie, FH Fenton, GK Moe, GX Yan, HN Pak, I Banville, J Han, JM Pastore, K Gima, K Yuuki, KJ Sampson, KJ Sampson, KR Laurita, KR Laurita, MA Watanabe, ML Riccio, MR Franz, P Taggart, P Taggart, PC Viswanathan, Peter Taggart, RH Clayton, RH Clayton, Richard H Clayton, SD Girouard, TJ Hund, ZL Qu   +37 more
core   +3 more sources

Soft and Adhesive Cardiac Patch for Electrophysiological and Contraction Measurement

Advanced Science, EarlyView.
This study developed an epicardial electronic patch with a modulus similar to that of the heart (approximately 65kPa), which can collect stable electrocardiogram signals and myocardial contractility on the surface of a dynamically beating heart. This is attributed to the hydrogen bond interaction formed between the amino and catechol groups in the ...
Wuliang Chen, Xinyu Shen, Hanning Liu, Lamei Du, Caicai Jiao, Longfei Li, Qian Wang, Qiuting Zhang, Lixue Tang, Liang Hu, Yubo Fan   +10 more
wiley   +1 more source

Arrhythmogenic right ventricular cardiomyopathy associated with severe left ventricular involvement in a cat. [PDF]

, 2009
An 8-year-old, 4 kg, intact female, domestic shorthaired cat was referred for tachypnea and pleural effusion. A 24-h Holter recording showed numerous polymorphic ventricular premature complexes with left and right bundle branch block morphology ...
Basso C, CIARAMELLA, PAOLO, Di Loria A, PIANTEDOSI, DIEGO   +3 more
core   +1 more source

Anger and ventricular arrhythmias [PDF]

Current Opinion in Cardiology, 2010
Although anecdotal evidence has long suggested links between emotion and ventricular arrhythmia, more recent studies have prospectively demonstrated the arrhythmogenic effects of anger, as well as mechanisms underlying these effects.Epidemiological studies reveal that psychological stress increases sudden death, as well as arrhythmias, in patients with
openaire   +2 more sources

Synchronization‐Dissipation in the Cardiorespiratory System

Advanced Science, EarlyView.
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border, Alain Nogaret, Andrew Lefevre, Vishal Jain   +3 more
wiley   +1 more source