Results 31 to 40 of about 1,093,239 (312)

Vigorous Vascular Contraction Mimicking Myocardial Bridge Resulting from Digoxin Treatment in an Elderly Patient

International Journal of Gerontology, 2016
Myocardial bridge is defined as the intramyocardial course of a segment of a coronary artery. Digoxin increases the force of myocardial contraction, which augments the compression of the vessel.
Wai-Kin Wong, Po-Jung Yuan
doaj   +1 more source

Myocardial Acceleration During Isovolumic Contraction [PDF]

Circulation, 2005
Background— Acceleration of the mitral ring during isovolumic contraction has been proposed as a load-independent index of global left ventricular (LV) contractility. This study investigates whether myocardial isovolumic acceleration (IVA) reflects regional contractility.
Erik, Lyseggen, Stein Inge, Rabben, Helge, Skulstad, Stig, Urheim, Cecilie, Risoe, Otto A, Smiseth   +5 more
openaire   +2 more sources

Effect of changes in contractility on the index of myocardial performance in the dysfunctional left ventricle

Cardiovascular Ultrasound, 2006
Background The index of myocardial performance has prognostic power in patients with cardiomyopathy and following myocardial infarction. As the index of myocardial performance has been shown to be preload and afterload dependent, the effect of altering ...
Lavine Steven J
doaj   +1 more source

The impact of myocardial compressibility on organ-level simulations of the normal and infarcted heart

Scientific Reports, 2021
Myocardial infarction (MI) rapidly impairs cardiac contractile function and instigates maladaptive remodeling leading to heart failure. Patient-specific models are a maturing technology for developing and determining therapeutic modalities for MI that ...
Hao Liu, João S. Soares, John Walmsley, David S. Li, Samarth Raut, Reza Avazmohammadi, Paul Iaizzo, Mark Palmer, Joseph H. Gorman, Robert C. Gorman, Michael S. Sacks   +10 more
doaj   +1 more source

Polypyrrole-chitosan conductive biomaterial synchronizes cardiomyocyte contraction and improves myocardial electrical impulse propagation

Theranostics, 2018
Background: The post-myocardial infarction (MI) scar interrupts electrical impulse propagation and delays regional contraction, which contributes to ventricular dysfunction. We investigated the potential of an injectable conductive biomaterial to restore
Zhi Cui, N. Ni, Jun Wu, G. Du, Sheng He, T. Yau, R. Weisel, Hsing‐Wen Sung, Ren-Ke Li   +8 more
semanticscholar   +1 more source

Strain bidimensional na cardiopatia de Takotsubo Two-dimensional strain in Takotsubo cardiomyopathy

Arquivos Brasileiros de Cardiologia, 2010
Este relato apresenta o seguimento tardio de um caso de cardiomiopatia de Takotsubo com boa evolução clínica e melhora da função sistólica global ventricular esquerda.
Carlos Bellini G. Gomes, Gustavo J. Veras   +1 more
doaj   +1 more source

STUDIES ON MYOCARDIAL CONTRACTION

The Keio Journal of Medicine, 1969
The relations between the right ventricular contraction and the local myo-cardial shortening measured by means of the transcatheter method were dis-cussed. The local tension-velocity-length relationships were also shown.The authors wish to express their sincere gratitude to Prof. H. Sasamoto for his generous guidance and instruction in this study.
HARUO TOMODA, SHUNNOSUKE HANDA, TAKANORI OGINO, MASAKATSU FUKUDA, HAJIME HIROSE, TOSHIO SEKIMOTO, KAZUHIKO KATAYAMA   +6 more
openaire   +2 more sources

Transmural Myocardial Mechanics During Isovolumic Contraction

JACC: Cardiovascular Imaging, 2009
We sought to resolve the 3-dimensional transmural heterogeneity in myocardial mechanics observed during the isovolumic contraction (IC) phase.Although myocardial deformation during IC is expected to be little, recent tissue Doppler imaging studies suggest dynamic myocardial motions during this phase with biphasic longitudinal tissue velocities in left ...
Ashikaga, Hiroshi, van der Spoel, Tycho I.G., Coppola, Benjamin A., Omens, Jeffrey H.   +3 more
openaire   +2 more sources

Effect of αα₂-adrenoceptor stimulation on the isolated rat heart after acute myocardial infarction

КардиоСоматика
Background: α2-Adrenoceptors (α2-ARs) are a family of G protein–coupled receptors. They are located on presynaptic membranes of adrenergic fibers, postsynaptic membranes of cardiomyocytes and vascular smooth muscle cells, as well as in the peripheral and
Anna M. Kuptsova, Nafisa I. Ziyatdinova, Aiziriak M. Sadykov, Timur L. Zefirov   +3 more
doaj   +1 more source

Effects of sugammadex and rocuronium on electro-mechanical activity of cardiac myocytes [PDF]

Korean Journal of Anesthesiology
Background Sugammadex reverses the effects of steroidal neuromuscular-blocking agents, such as rocuronium, by encapsulating these agents. Its cardiovascular adverse effects include QTc prolongation, hypotension, bradycardia, atrioventricular block ...
Oguzhan Arun, Nihal Ozturk, Orhan Erkan, Semir Ozdemir, Funda Arun, Sırma Basak Yanardag, Murat Ayaz   +6 more
doaj   +1 more source