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  2. Repolarization - Wikipedia

    en.wikipedia.org/wiki/Repolarization

    Early repolarization is a phenomenon that can be seen in ECG recordings of ventricular cells where there is an elevated ST segment, also known as a J wave. The J wave is prominent when there is a larger outward current in the epicardium compared to the endocardium. [19]

  3. T wave - Wikipedia

    en.wikipedia.org/wiki/T_wave

    Repolarization of the ventricle happens in the opposite direction of depolarization and is negative current, signifying the relaxation of the cardiac muscle of the ventricles. But this negative flow causes a positive T wave; although the cell becomes more negatively charged, the net effect is in the positive direction, and the ECG reports this ...

  4. Cardiac action potential - Wikipedia

    en.wikipedia.org/wiki/Cardiac_action_potential

    The standard model used to understand the cardiac action potential is that of the ventricular myocyte. Outlined below are the five phases of the ventricular myocyte action potential, with reference also to the SAN action potential. Figure 2a: Ventricular action potential (left) and sinoatrial node action potential (right) waveforms.

  5. Cardiac conduction system - Wikipedia

    en.wikipedia.org/wiki/Cardiac_conduction_system

    Ventricular repolarization. The last event of the cycle is the repolarization of the ventricles. It is the restoring of the resting state.

  6. Electrocardiography - Wikipedia

    en.wikipedia.org/wiki/Electrocardiography

    Repolarization of the atria occurs at the same time as the generation of the QRS complex, but it is not detected by the ECG since the tissue mass of the ventricles is so much larger than that of the atria. Ventricular contraction occurs between ventricular depolarization and repolarization.

  7. Benign early repolarization - Wikipedia

    en.wikipedia.org/wiki/Benign_early_repolarization

    Research in the late 2000s has linked this finding to ventricular fibrillation, particularly in those who have fainted or have a family history of sudden cardiac death. [5] [6] [7] Although there is a significant relationship between ventricular fibrillation and some early repolarization's patterns, the overall lifetime occurrence of idiopathic ventricular fibrillation is exceptionally rare. [8]

  8. Ventricular action potential - Wikipedia

    en.wikipedia.org/wiki/Ventricular_action_potential

    The action potential of a ventricular myocyte. In electrocardiography, the ventricular cardiomyocyte membrane potential is about −90 mV at rest, [1] which is close to the potassium reversal potential. When an action potential is generated, the membrane potential rises above this level in five distinct phases. [1]

  9. ST segment - Wikipedia

    en.wikipedia.org/wiki/ST_segment

    The ST segment represents the isoelectric period when the ventricles are in between depolarization and repolarization. Interpretation ...

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