Results 71 to 80 of about 165,314 (216)

Towards the Emulation of the Cardiac Conduction System for Pacemaker Testing [PDF]

arXiv, 2016
The heart is a vital organ that relies on the orchestrated propagation of electrical stimuli to coordinate each heart beat. Abnormalities in the heart's electrical behaviour can be managed with a cardiac pacemaker. Recently, the closed-loop testing of pacemakers with an emulation (real-time simulation) of the heart has been proposed.
arxiv  

Prediction of 90 day mortality in elderly patients with acute HF from e‐health records using artificial intelligence

ESC Heart Failure, EarlyView.
Abstract Aims Mortality risk after hospitalization for heart failure (HF) is high, especially in the first 90 days. This study aimed to construct a model automatically predicting 90 day post‐discharge mortality using electronic health record (EHR) data 48 h after admission and artificial intelligence. Methods All HF‐related admissions from 2015 to 2020
Joconde Weller, Johann Gutton, Guillaume Hocquet, Leïla Pellet, Marie‐José Aroulanda, Amélie Bruandet, Didier Theis, Fabio Boudis, Romain Cador, Pierre Zweigenbaum, Anne Buronfosse, Pascal de Groote, Michel Komajda   +12 more
wiley   +1 more source

A model of cardiac tissue as a conductive system with interacting pacemakers and refractory time [PDF]

arXiv, 2002
A model of the heart tissue as a conductive system with two interacting pacemakers and a refractory time, is proposed. In the parametric space of the model the phase locking areas are investigated in detail. Obtained results allow us to predict the behaviour of excitable systems with two pacemakers depending on the type and intensity of their ...
arxiv  

Computer Algorithms for Automated Detection and Analysis of Local Ca2+ Releases in Spontaneously Beating Cardiac Pacemaker Cells [PDF]

, 2017
Local Ca Releases (LCRs) are crucial events involved in cardiac pacemaker cell function. However, specific algorithms for automatic LCR detection and analysis have not been developed in live, spontaneously beating pacemaker cells. Here we measured LCRs using a high-speed 2D-camera in spontaneously contracting sinoatrial (SA) node cells isolated from ...
arxiv   +1 more source

Cardiac rhythm devices in heart failure with reduced ejection fraction – role, timing, and optimal use in contemporary practice. European Journal of Heart Failure expert consensus document

European Journal of Heart Failure, EarlyView.
Abstract Guidelines for management of heart failure with reduced ejection fraction (HFrEF) emphasize personalized care, patient engagement, and shared decision‐making. Medications and cardiac rhythm management (CRM) devices are recommended with a high level of evidence. However, there are significant disparities: patients who could benefit from devices
Biykem Bozkurt, Wilfried Mullens, Christophe Leclercq, Andrea M. Russo, Gianluigi Savarese, Michael Böhm, Loreena Hill, Koichiro Kinugawa, Naoki Sato, William T. Abraham, Antoni Bayes‐Genis, Alexandre Mebazaa, Giuseppe M.C. Rosano, Shelley Zieroth, Cecilia Linde, Javed Butler   +15 more
wiley   +1 more source

Analysis of Heterogeneous Cardiac Pacemaker Tissue Models and Traveling Wave Dynamics [PDF]

arXiv, 2018
The sinoatrial-node (SAN) is a complex heterogeneous tissue that generates a stable rhythm in healthy hearts, yet a general mechanistic explanation for when and how this tissue remains stable is lacking. Although computational and theoretical analyses could elucidate these phenomena, such methods have rarely been used in realistic (large-dimensional ...
arxiv  

Wearable Ultrasound Devices for Biomedical Applications

FlexTech, EarlyView.
ABSTRACT Wearable devices possess excellent flexibility and can conform to irregular surfaces, extensively changing human healthcare fields. Ultrasonic technology, with its extensive penetration depth, nondestructive nature, and versatile functionalities, has been widely applied in the diagnosis and treatment of various diseases.
Muyao Wang, Lu Jia, Haicheng Li, Xue Feng   +3 more
wiley   +1 more source

Case Report Endovascular single-chamber pacemaker implantation using active fixation in a 8 years old Dogue de Bordeaux with presumed Persistent Atrial Standstill: the first case documented in Romania

Cluj Veterinary Journal
Background: Symptomatic bradyarrhythmias in dogs can lead to sever hemodynamical compromise due to impaired oxygen and nutrients delivery and even sudden cardiac death.
Florin Leca, Stefan Adrian Geanta, Mihaela Claudia Bolintineanu, Eusebiu Ionut Condurachi, Alina Nechifor, Daniel Barsan, Florica Bărbuceanu, Nicu Caplea, Diana Caraza   +8 more
doaj   +1 more source

End to End Verification and Validation with SPIN [PDF]

arXiv, 2013
Over the last several years the tools used for model checking have become more efficient and usable. This has enabled users to apply model checking to industrial-scale problems, however the task of validating the implementation of the model is usually much harder.
arxiv  

Understanding the Mechanism of Cardiotoxicity Induced by Nanomaterials: A Comprehensive Review

Small Science, EarlyView.
This review provides a bibliometric analysis for understanding the study of nanotoxicity on cardiovascular health. It begins by outlining the pathways through which nanomaterials enter the cardiovascular system, followed by a summary of the mechanisms underlying nanomaterial‐induced cardiotoxicity.
Zaiyong Zheng, Shuang Zhu, Xiaobo Wang, Haoran Wu, Min Fu, Houxiang Hu, Zhanjun Gu, Chunxiang Zhang   +7 more
wiley   +1 more source