Results 71 to 80 of about 49,144 (342)

Models of the cardiac L‐type calcium current: A quantitative review

WIREs Mechanisms of Disease, Volume 15, Issue 1, January/February 2023., 2023
We discuss 73 published models of mammalian ICaL and find differences in gating kinetics, electrochemical driving force, and sensitivity to internal calcium concentrations, leading to considerable variability in their predictions. Abstract The L‐type calcium current (ICaL) plays a critical role in cardiac electrophysiology, and models of ICaL are vital
Aditi Agrawal, Ken Wang, Liudmila Polonchuk, Jonathan Cooper, Maurice Hendrix, David J. Gavaghan, Gary R. Mirams, Michael Clerx   +7 more
wiley   +1 more source

A dual-chamber pacing mode to minimize ventricular pacing

Zdravniški Vestnik, 2005
Background: Though patients with sick sinus syndrome theoretically need an atrial pacemaker only, they usually receive a ventricular or a dual-chamber pacemaker because of possible developement of atrioventricular conduction abnormalities.
Peter Rakovec
doaj  

Machine Learning-based Efficient Ventricular Tachycardia Detection Model of ECG Signal [PDF]

arXiv, 2021
In primary diagnosis and analysis of heart defects, an ECG signal plays a significant role. This paper presents a model for the prediction of ventricular tachycardia arrhythmia using noise filtering, a unique set of ECG features, and a machine learning-based classifier model.
arxiv  

The Downside of Right Ventricular Apical Pacing

Indian Pacing and Electrophysiology Journal, 2012
The right ventricular (RV) apex has been the standard pacing site since the development of implantable pacemaker technology. Although RV pacing was initially only utilized for the treatment of severe bradyarrhythmias usually due to complete heart block, today the indications for and implantation of RV pacing devices is dramatically larger.
Alon Barsheshet, Andrew Brenyo, Ilan Goldenberg   +2 more
openaire   +4 more sources

Advanced glycation end products induce senescence of atrial myocytes and increase susceptibility of atrial fibrillation in diabetic mice

Aging Cell, Volume 21, Issue 12, December 2022., 2022
Diabetes mellitus (DM) is a common chronic metabolic disease and an independent risk factor for atrial fibrillation (AF). However, the regulatory mechanisms underlying atrial electrical remodeling in diabetes are not fully understood. This study presents new insights into the role and mechanism of atrial myocyte senescence in diabetic‐induced AF ...
Dan‐Lin Zheng, Qing‐Rui Wu, Peng Zeng, Sui‐Min Li, Yong‐Jiang Cai, Shu‐Zhen Chen, Xue‐Shan Luo, Su‐Juan Kuang, Fang Rao, Ying‐Yu Lai, Meng‐Yuan Zhou, Fei‐Long Wu, Hui Yang, Chun‐Yu Deng   +13 more
wiley   +1 more source

Spatiotemporal dynamics of pacing in models of anatomical reentry [PDF]

arXiv, 2001
Reentry around non-conducting ventricular scar tissue, which often causes lethal arrhythmias, is typically treated by rapid stimulation from an implantable defibrillator. However, the mechanisms of termination (success and failure) are poorly understood.
arxiv  

Semantic-aware Temporal Channel-wise Attention for Cardiac Function Assessment [PDF]

arXiv, 2023
Cardiac function assessment aims at predicting left ventricular ejection fraction (LVEF) given an echocardiogram video, which requests models to focus on the changes in the left ventricle during the cardiac cycle. How to assess cardiac function accurately and automatically from an echocardiogram video is a valuable topic in intelligent assisted ...
arxiv  

Aortic Root Anatomy and Impact on New‐Onset Left Bundle Branch Block After Transcatheter Aortic Valve Implantation

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Angulation of virtual basal ring (VBR), also known as aortic annulus, in relation to sino‐tubular junction (STJ) may lead to greater exposure of implanted stent to the conduction system, consequently increasing the risk of left bundle branch block (LBBB).
Habib Layoun, Joseph Kassab, Michel Chedid El Helou, Joseph El Dahdah, Odette Iskandar, Maryam Muhammad Ali Majeed Saidan, Abdelrahman Abushouk, Toshiaki Isogai, Grant Reed, Rishi Puri, Oussama M. Wazni, Amar Krishnaswamy, Serge Harb, Samir Kapadia   +13 more
wiley   +1 more source

New Insights into Pacing Induced Cardiomyopathy

Reviews in Cardiovascular Medicine
Pacing induced cardiomyopathy (PICM) can occur as a complication due to pacing the right ventricle. Its precise definition varies across different studies, leading to uncertainty as to the best approach for managing this entity. More than 10% of patients
Sung Soo Kim, Hyung Wook Park
doaj   +1 more source

Acute impact of pacing at different cardiac sites on left ventricular rotation and twist in dogs. [PDF]

PLoS ONE, 2014
We evaluated the acute impact of different cardiac pacing sites on two-dimensional speckle-tracking echocardiography (STE) derived left ventricular (LV) rotation and twist in healthy dogs.Twelve dogs were used in this study.
Zhi-Wen Zhou, Bu-Chun Zhang, Yi Yu, Kai Guo, Wei Li, Rui Zhang, Peng-Pai Zhang, Yi-Gang Li   +7 more
doaj   +1 more source