Action potentials- cardiac conduction system vs myocardium
The cardiac conduction system: generation and conduction of the cardiac impulse
... normal cardiac conduction system allows for, not only, the generation of this impulse but, also, its automatic propagation of it throughout the atrial and ventricular myocardium allowing for ...
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Induction and patterning of the cardiac conduction system
... thinner myocardium, however, ventricular activation from the apex can be observed slightly prior to the completion of ventricular septation (Rentschler et ...specialized cardiac tissues during ...
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Cardiac conduction system: the graph theoretic approach
... the action potential. Under physiological condition, the cardiac cells do not respond to electrical activity until it reaches the quiescent period in phase 4 of the action ...propagating. ...
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Utility of Monophasic Action Potentials in the Diagnosis and Treatment of Cardiac Arrhythmias
... As Schültz was introducing the suction electrode method for recording MAPs, another approach was also being simultaneously tested. In 1935, Jochim et al. reported that cardiac MAPs could be recorded by simply ...
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Correlating cardiac action potentials with metabolic markers during acute cardiac ischemia in rabbit hearts
... first system, to our knowledge, that simultaneously measures 31 P nuclear magnetic resonance (NMR) and optical action potentials (APs) in order to determine the dynamic relationship between certain ...
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Biorealistic cardiac cell culture platforms with integrated monitoring of extracellular action potentials.
... the transverse direction was still the slowest (24.01 ± 1.50 cm/s). Figure 5e demonstrates representative conduction velocity profiles of the same MEA before and after the first use with cells. Discussion Parylene ...
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Biorealistic cardiac cell culture platforms with integrated monitoring of extracellular action potentials
... on action potential propagation However standard cell cultures are of limited use in cardiac research, as they do not preserve important structural and functional properties of the myocardium Here we ...
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TBX5 drives Scn5a expression to regulate cardiac conduction system function
... rapid conduction of electrical impulses from the AV node to the apical ventricular myocardium to estab- lish coordinated ventricular contraction with apex-to-base polar- ...ventricular conduction ...
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Nkx2 5 mutation causes anatomic hypoplasia of the cardiac conduction system
... that conduction velocity through a Purkin- je fiber and the number of terminal Purkinje fibers that depolarize the ventricles are separate ...represents conduction through the His-Purkinje system, ...
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Embryonic Tbx3+ cardiomyocytes form the mature cardiac conduction system by progressive fate restriction
... the cardiac conduction system (CCS) in ...chamber myocardium, embryonic Gja5 + chamber cardiomyocytes did not contribute to the Tbx3 + sinus node or to atrioventricular ring ...
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Distribution of cardiac myosin isozymes in human conduction system Immunohistochemical study using monoclonal antibodies
... unlabeled by HMC14. Although the number of ventricular myofibers labeled by CMA19 was small, the labeled myofibers were more numerous in the subepicardial region than in the subendocardial region. These findings show ...
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A comparison of propagated action potentials from tropical and temperate squid axons: different durations and conduction velocities correlate with ionic conductance levels
... axon system mediates the same basic function for all the squid species ...the action potential’s duration will be considered in terms of simple rate ...similar action potential duration at their ...
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The Initiation and Conduction of Action Potentials in the Optic Nerve of Tritonia
... By observing the form of the extracellular action potentials recorded at different sites along the optic nerve during light and darkness (Figs. 2, 3), as well as by noting the temporal r[r] ...
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A new approach to modelling the dynamics of cardiac action potentials
... Rudy, A Dynamic Model of the Ventricular Cardiac Action Potential: L Simulation of Ionic Currents and Concentration Changes, Circ. Pertsov, Non-stationary Vortex-like R[r] ...
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Propagation of Cardiac Action Potentials: How does it Really work?
... fatal cardiac arrhythmias is still not completely known, however, in many cases the cause can be traced to a failure of the cardiac action potential to propagate ...
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Propagated repolarization of simulated action potentials in cardiac muscle and smooth muscle
... Background: Propagation of repolarization is a phenomenon that occurs in cardiac muscle. We wanted to test whether this phenomenon would also occur in our model of simulated action potentials (APs) ...
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Cardiac Conduction System (1) ECG (Electrocardiogram) Cardiac Conduction System (2) The ECG (1) The ECG (1) The ECG (1) Achmad Rizal BioSPIN
... • The new set of leads obtained by combining the standard limb electrodes to the Wilson terminal form the augmented leads • These leads provide additional vector views of cardiac depolarization in the frontal ...
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Boundary effects influence velocity of transverse propagation of simulated cardiac action potentials
... Theoretical Biology and Medical Modelling 2005, 2:36 http://www.tbiomed.com/content/2/1/36 Recordings of the APs from one chain at a time, so that the transverse spread of excitation can be more clearly seen Figure 3 ...
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Cardiac conduction system abnormalities in ankylosing spondylitis: a cross sectional study
... Results: Cardiac conduction disturbances were common and diagnosed in 10-33%, depending on if conservative or less conservative predefined criteria were ...blocks. Conduction abnormalities were ...
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Short-term effects of fine particulate matter and ozone on the cardiac conduction system in patients undergoing cardiac catheterization
... medication intake, and the smoking status was roughly divided into current/former smoker or never smoker, which may have led to inaccuracy in assessing effect modification by pre-existing morbidities and residual ...
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