Results 81 to 90 of about 329,528 (297)

Диссинхрония миокарда у больных с хронической сердечной недостаточностью: факторы, влияющие на развитие, особенности коррекции

Архивъ внутренней медицины, 2011
The purpose of our research was to study features of development of dyssynchrony in patients with heart failure and different forms of ischemic heart disease, and also to estimate efficiency of cardiac resynchronization therapy.
А. И. Чесникова, А. Ю. Фишман, В. П. Терентьев, В. А. Сафроненко   +3 more
doaj   +1 more source

A comprehensive mathematical model for cardiac perfusion [PDF]

arXiv, 2023
We present a novel mathematical model that simulates myocardial blood perfusion by embedding multiscale and multiphysics features. Our model incorporates cardiac electrophysiology, active and passive mechanics, hemodynamics, reduced valve modeling, and a multicompartment Darcy model of perfusion.
arxiv  

Atrioventricular shortening is the dominant mechanism of benefit of biventricular pacing in left bundle branch block

, 2021
Type of funding sources: Public Institution(s). Main funding source(s): British Heart Foundation Cardiac resynchronization therapy delivered via biventricular pacing is thought to improve haemodynamic function through resynchronization of ...
A. Arnold, M. Shun-shin, N. Ali, J. Howard, D. Keene, J. Chow, N. Qureshi, D. Lefroy, M. Koa‐Wing, N. Linton, P. Lim, N. S. Peters, P. Kanagaratnam, D. Francis, Z. Whinnett   +14 more
semanticscholar   +1 more source

Comparison of Clinical Outcomes Between Left Bundle Branch Area Pacing With a Stylet‐Driven Lead and Conventional Right Ventricular Pacing

Journal of Cardiovascular Electrophysiology, EarlyView.
In this cohort study including 738 patients (243 left bundle branch area pacing using stylet‐driven lead vs. 495 right ventricular pacing), left bundle branch area pacing was associated with a lower risk of the primary outcome by 73% compared to right ventricular pacing with comparable safety profiles.
Kyung‐Yeon Lee, Jinsun Park, JungMin Choi, Hyo‐Jeong Ahn, Soonil Kwon, Myung‐Jin Cha, Jun Kim, Gi‐Byoung Nam, Kee‐Joon Choi, Eue‐Keun Choi, Seil Oh, Min Soo Cho, So‑Ryoung Lee   +12 more
wiley   +1 more source

Ultra-High-Frequency ECG in Cardiac Pacing and Cardiac Resynchronization Therapy: From Technical Concept to Clinical Application

Journal of Cardiovascular Development and Disease
Identifying electrical dyssynchrony is crucial for cardiac pacing and cardiac resynchronization therapy (CRT). The ultra-high-frequency electrocardiography (UHF-ECG) technique allows instantaneous dyssynchrony analyses with real-time visualization.
Uyên Châu Nguyên, Jesse H. J. Rijks, Filip Plesinger, Leonard M. Rademakers, Justin Luermans, Karin C. Smits, Antonius M. W. van Stipdonk, Frits W. Prinzen, Kevin Vernooy, Josef Halamek, Karol Curila, Pavel Jurak   +11 more
doaj   +1 more source

Self-supervised Video Representation Learning by Pace Prediction [PDF]

arXiv, 2020
This paper addresses the problem of self-supervised video representation learning from a new perspective -- by video pace prediction. It stems from the observation that human visual system is sensitive to video pace, e.g., slow motion, a widely used technique in film making.
arxiv  

Biventricular Pacing Cardiac Contractility Modulation Improves Cardiac Contractile Function via Upregulating SERCA2 and miR-133 in a Rabbit Model of Congestive Heart Failure

Cellular Physiology and Biochemistry, 2014
Objective: To compare the effects of biventricular electrical pacing and conventional single-ventricular pacing for cardiac contractility modulation (CCM) on cardiac contractile function and to delineate the underlying molecular mechanisms.
Bin Ning, Xiaoyong Qi, Yingxiao Li, Huiliang Liu, Feifei Zhang, Chen Qin   +5 more
doaj   +1 more source

Determinants of cardiac output in health and heart failure

Experimental Physiology, EarlyView.
Abstract Sustained physical exercise depends on delivery of oxygenated blood to exercising muscle. At least among healthy individuals, bulk transport of blood is tightly matched to metabolic demand, such that cardiac output increases by ∼6 L/min for every 1 L/min increase in oxygen uptake. Multiple factors contribute to the regulation of cardiac output,
Ibrahim Ainab, Natalie Van Ochten, Emmett Suckow, Kathryn Pierce, Chelsea Arent, Joseph Kay, Lindsey M. Forbes, William K. Cornwell III   +7 more
wiley   +1 more source

Temporary epicardial left ventricular and biventricular pacing improves cardiac output after cardiopulmonary bypass

Journal of Cardiothoracic Surgery, 2012
Background To evaluate, with different pacing modes, acute changes in left ventricular systolic function, obtained by continuous cardiac output thermodilution in various subsets of patients undergoing cardiopulmonary bypass surgery.
García-Bengochea Jose B, Fernández Angel L, Calvelo Daniel, Escudero Julian, Gude Francisco, Juanatey José R   +5 more
doaj   +1 more source

$ν$-net: Deep Learning for Generalized Biventricular Cardiac Mass and Function Parameters [PDF]

arXiv, 2017
Background: Cardiac MRI derived biventricular mass and function parameters, such as end-systolic volume (ESV), end-diastolic volume (EDV), ejection fraction (EF), stroke volume (SV), and ventricular mass (VM) are clinically well established. Image segmentation can be challenging and time-consuming, due to the complex anatomy of the human heart ...
arxiv