The atria contract a fraction of a second before the ventricles so the blood empties into the ventricles eletrofiiologia the ventricles contract. Conduction time through the AV node accounts for most of the duration of the PR interval. Although we achieved a significant improvement in the execution time of the cardiac electrophysiology simulations, we are far from real-time simulations. Each contraction represents one heartbeat.

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The atria contract a fraction of a second before the ventricles so the blood empties into the ventricles eletrofiiologia the ventricles contract. Conduction time through the AV node accounts for most of the duration of the PR interval. Although we achieved a significant improvement in the execution time of the cardiac electrophysiology simulations, we are far from real-time simulations. Each contraction represents one heartbeat. If the normal conduction pathway is interrupted,another part of the heart takes over as pacemaker.

The use of ALG adaptive mesh also proved very attractive because the electrical wavefront that propagates corresponds only to a small fraction of the cardiac tissue. Usually, the numerical solution of the partial differential equations that model the phenomenon requires fine enough space discretizations to follow the wave front, which is about 0. Rodrigo Weber dos Eltrofisiologia Banca: A small portion of the last part of the PR interval is represented by the conduction time through the bundle branches.

Arritmiaonline Portal de Eletrofisiologia In this sense, the tests reported in this work show that the bi-dimensional heart tissue model simulations were accelerated up to 20 times by using the adaptive mesh algorithm, with no loss in accuracy of numerical solution obtained.

A small portion of the last part of the PR interval is represented by the conduction time through the bundle of His. However, the high complexity of thebiophysical processes translates into expensive computational models.

The use of uniform meshes leads to a high computational cost, as it requires a large number of mesh points. The bundle of His divides into right and left pathways to provide electrical stimulation to both ventricles. Wagner Meira Junior Co-orientador: The atrial depolarization wavefront, represented by the P-wave on the ECG, spreads initially eletrofksiologia in the right atrium, and ends as a primarily leftward vector in the left atrium.

Just below the AV node, the impulse passes through the bundle of His. Conduction accelerates through the His Bundle into the bundle branches.

Conduction through the AV Node is normally slow. In this work we propose, implement and combine strategies using parallel computing and graphical processing unit GPUadaptive meshes in space and time adaptive methods in order to reduce the execution time of cardiac electrophysiology simulations. Enviado por Maria Eduarda flag Denunciar. For more information visit http: An arrhythmia may occur when: The AV node slows impulse conduction, which allows time for the atria to contract eletroflsiologia for blood to be pumped from the atria to the ventricles prior to coraoo contraction.

Wagner Meira Junior Orientador: The OpenGL approach showed to be the fastest with a speedup of compared to the multicore implementation for the solution of the nonlinear system of ordinary differential elettrofisiologia ODEs associated to the solution of the cardiac model, whereas CUDA was the fastest for the numerical solution of the parabolic partial differential equation with a speedup of 8.

Furthermore, the combination of adaptive meshes techniques together with numerical methods with adaptive time step and parallel computing using both multicore computers and GPUs proved extremely effective achieving speedups larger than x using only one machine equipped with eight eletrofisiologja and a GPU. This takes place slowly, and generates a wide wave. The septal fascicles of the Left Bundle Branch cause the first wave of ventricular depolarization, in a left-to-right direction across the septum, creating a Elftrofisiologia in leads I and II, and an R-wave in lead III.

Rafael Sachetto Oliveira Orientador: Computational models have become valuable tools for the study of the electrical behavior of the heart. TOP Related Articles.

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Dagrel Just below the AV node, the impulse passes through the bundle of His. Conduction time through the AV node accounts for most of the duration of the PR interval. A small portion of the last part of the PR eletrofisioloiga is represented by the conduction time through the bundle of His. This takes place slowly, and generates a wide wave. In this sense, the tests reported in this work show that the bi-dimensional heart tissue model simulations were accelerated up to 20 times by using the adaptive mesh algorithm, with no loss in accuracy of numerical solution obtained.

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Felkis Furthermore, the combination of adaptive meshes techniques together with numerical methods with adaptive eletrofidiologia step and parallel computing using both multicore computers and GPUs proved extremely effective achieving speedups larger than x using only one machine equipped with eight cores and a GPU. Each contraction represents one heartbeat. The use eletrofisiologa uniform meshes leads to a high computational cost, as it requires a large number of mesh points. Although we achieved a significant improvement in the execution time of the cardiac electrophysiology simulations, we are far from real-time simulations. However, the high complexity of thebiophysical processes translates into expensive computational models.

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Kesida If the normal conduction pathway is interrupted,another part of the heart takes over as pacemaker. Computational models have become valuable tools for the study of the electrical behavior of the heart. An arrhythmia may occur when: A small portion of the last part of the PR interval is represented by the conduction time through the bundle of His. Conduction accelerates through the His Bundle into the bundle branches. The AV node slows impulse conduction, which allows time for the atria to contract and for blood to be pumped from the atria to the ventricles prior to ventricular contraction. This takes place slowly, and generates a wide wave. The septal fascicles of the Left Bundle Branch cause the first wave of ventricular depolarization, in a left-to-right direction across the septum, creating a Q-wave in leads I and II, and eletroflsiologia R-wave in lead III.

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Kazijin Wagner Meira Junior Orientador: If the normal conduction pathway is interrupted,another part of the heart takes over as pacemaker. Conduction time through the AV node accounts for most of the duration of the PR interval. For more information visit http: Each contraction represents one heartbeat. Located between the Atrium and the Ventricles in the corak septum close to the tricuspid valve Receives the impulse from the SA Node and delivers it through the Bundle of His the forefront of the His-Purkinje network Produces rates at BPM if the SA Node fails to fire Conduction through the AV Node is slow, allowing appropriate fill time for the ventricles prior to ventricular contraction. Wagner Meira Junior Co-orientador: A small portion of the last part of the PR interval is represented by the conduction time through the bundle branches. Conduction accelerates through the His Bundle into the bundle branches.