Results 251 to 260 of about 1,093,239 (312)
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International Journal of Legal Medicine, 2001
Pathological contraction bands affecting myocardial cells are observed in many different human conditions and in different experimental models. Their morphology was defined long ago but we need to understand the pathogenesis and functional meaning. A distinction between different histological forms of contraction bands and their quantification in a ...
G. Baroldi +4 more
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Pathological contraction bands affecting myocardial cells are observed in many different human conditions and in different experimental models. Their morphology was defined long ago but we need to understand the pathogenesis and functional meaning. A distinction between different histological forms of contraction bands and their quantification in a ...
G. Baroldi +4 more
openaire +2 more sources
Japanese Journal of Applied Physics, 2019
The propagation of myocardial contraction caused by the conduction of electrical excitation in the heart has been visualized in our previous study. However, it was assumed that the contraction propagated parallel to the heart wall and the propagation ...
Akane Hayashi +3 more
semanticscholar +1 more source
The propagation of myocardial contraction caused by the conduction of electrical excitation in the heart has been visualized in our previous study. However, it was assumed that the contraction propagated parallel to the heart wall and the propagation ...
Akane Hayashi +3 more
semanticscholar +1 more source
Tonic component of myocardial contraction
Cell Calcium, 2004Calcium transients and contractions of cardiac myocytes consist of phasic component, relaxing spontaneously independently of membrane voltage and of the tonic component (TC) relaxing only upon repolarization. Experimental data reviewed in this article suggest that most Ca(2+) activating TC is released from sarcoplasmic reticulum (SR) via the ryanodine ...
Bohdan, Lewartowski, Urszula, Mackiewicz
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Myocardial Contraction and Long QT Syndrome
Trends in Cardiovascular Medicine, 2011The long QT syndrome is an inherited cardiac arrhythmic disease that has been regarded as a purely electrical disease. However, sporadic reports have indicated that myocardial contraction abnormalities are present in these patients. Novel echocardiographic techniques such as strain echocardiography have made it possible to further elucidate cardiac ...
Kristina H, Haugaa, Thor, Edvardsen
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Modeling Ischemia-Induced Dyssynchronous Myocardial Contraction
Anesthesia & Analgesia, 2006Left ventricular (LV) contraction dyssynchrony is not easily quantified. We previously described a model for quantifying LV dyssynchrony that referenced regional amplitude and phase angles to global LV systole using esmolol-induced regional dyskinesis.
David P, Strum, Michael R, Pinsky
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Endothelial Modulation of Myocardial Contraction
Endothelium, 1994Both endocardial endothelium and coronary vascular endothelium in the heart influence myocardial contraction by releasing diffusible agents that affect the subjacent myocardium. This effect of cardiac endothelium can be demonstrated both in isolated tissue preparations as well as pump function in intact hearts both in vitro and in vivo. Agents released
Malcolm J. Lewis, Ajay M. Shah
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Cardiac contraction affects deep myocardial vessels predominantly
American Journal of Physiology-Heart and Circulatory Physiology, 1991To evaluate the roles of intramyocardial forces and systolic ventricular pressure in myocardial flow in the different layers separately, we measured myocardial flow in rabbit hearts during stable systolic contracture with left ventricular pressures of 60 (n = 5) and 0 mmHg (n = 5) and during stable diastolic arrest (n = 5). We also measured the number
M, Goto +8 more
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