Amal Mattu's ECG Case of the Week – February 27, 2017

EKG Heart Rhythms Cheat Sheet Nurse, Nursing school

When the electrical system of the heart does not operate as it is supposed to, early repolarization (ERP) can develop. ERP can be seen on an electrocardiogram (EKG). This painless procedure provides a picture of the electrical activity of the heart and how the heart is working. Long considered a disorder of cardiac repolarization mediated by sodium channel mutations, Brugada Syndrome (BS) is now more clearly a disorder primarily of depolarization due to fibrosis on the epicardial aspect of the right ventricular outflow tract (RVOT). Delayed repolarization in human myocardium relies mainly on the vast diversity of cardiac potassium channels but also on a particular redundancy in the heart known as the "repolarization reserve," in which one current takes over if another one should fail.

Repolarization of the heart

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Ventricular depolarization begins at apex, causing the QRS complex. Atrial repolarization occurs. 2020-04-30 · Delayed repolarization in human myocardium relies mainly on the vast diversity of cardiac potassium channels but also on a particular redundancy in the heart known as the "repolarization reserve," in which one current takes over if another one should fail.

http://blog.nclexmastery.com/ Cardiac catheterization

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Adaptation of ventricular repolarization time following abrupt

2021-01-31 A large body of detailed information has been accumulated on the pattern of ventricular activation, both in animals and in man. In contrast, strikingly little is known about the pattern of repolarization, with no information available for the human heart. 2017-11-21 DEPOLARIZATION & REPOLARIZATION OF HEART CHAMBERS If the heart is working normally, then these processes occur in the same direction and in a certain order. Repolarization starts from the epicardium of the cardiac base and terminates in the endocardium of the cardiac apex. If there is a violation, the first signs are a sharp acceleration in the subepicardial parts of the myocardium.

As the heart undergoes depolarization and repolarization, the electrical currents that are generated spread not only within the heart, but also throughout the body.
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Early repolarization of the ventricles of the heart is a fairly common syndrome, which can be a precursor to the development of serious abnormalities in the body. For this reason, it is necessary to conduct a competent diagnosis and systematic A transient repolarization of the action potential follows the initial fast depolarization. This is termed phase 1.

J wave, QRS slurring, and ST elevation in athletes with cardiac arrest in the absence of heart disease: marker of risk or innocent bystander? The repolarization process is very important for the body, because as a result of it, the heart is prepared for systole, and normal excitability of the muscles of the organ is also ensured.
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Roten L, Derval N, Maury P, et al. Benign vs malignant inferolateral early repolarization: focus on the T wave. Heart Rhythm 2016;13:894-902. Cristoforetti Y, Biasco L, Giustetto C, et al. J-wave duration and slope as potential tools to discriminate between benign and malignant early repolarization. Heart Rhythm 2016 Repolarization (ST-T,U) Abnormalities Repolarization can be influenced by many factors, including electrolyte shifts, ischemia, structural heart disease (cardiomyopathy) and (recent) arrhythmias. Although T/U wave abnormalities are rarely specific for one disease, it can be useful to know which conditions can change repolarization.