Electrical Instability of the Myocardium in Children and Adolescents

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Abstract

Currently, there is no doubt that the problem of electrical instability of the myocardium in pediatric cardiology is relevant. The determination of various indicators of electrical instability of the myocardium, which are predictors of life-threatening rhythm disorders and sudden cardiac death, presents an underdeveloped task not only for functional diagnostics specialists, but also for pediatricians, neonatologists, pediatric cardiologists and doctors of other specialties. Non-invasive research methods such as electrocardiography (ECG), Holter ECG monitoring (HM ECG), available in almost all pediatric treatment and prevention institutions, are quite informative in terms of detecting electrophysiological heterogeneity of the myocardium as a predictor of sudden cardiac death, which is especially important in children at risk, as well as young athletes. Thus, the determination of indicators of electrical instability of the myocardium is of great interest, it is a promising direction in modern clinical practice, allowing to predict the risk of developing fatal arrhythmias in children and adolescents.

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About the authors

Larisa A. Balykova

National Research Ogarev Mordovia State University

Author for correspondence.
Email: larisabalykova@yandex.ru
ORCID iD: 0000-0002-2290-0013
SPIN-code: 2024-5807

MD, PhD, Professor, Corresponding Member of the RAS

Russian Federation, 98 Bolshevistskaya str., 430005, Saransk

Marina V. Shirmankina

National Research Ogarev Mordovia State University

Email: shirmankina99@mail.ru
ORCID iD: 0000-0002-9049-5662
SPIN-code: 2141-2903

Clinical Resident

Russian Federation, 98 Bolshevistskaya str., 430005, Saransk

Stanislav A. Ivyanskiy

National Research Ogarev Mordovia State University

Email: stivdoctor@yandex.ru
ORCID iD: 0000-0003-0087-4421
SPIN-code: 9931-6767

MD, PhD

Russian Federation, 98 Bolshevistskaya str., 430005, Saransk

Anna V. Krasnopolskaya

National Research Ogarev Mordovia State University

Email: abalykova@gmail.ru
ORCID iD: 0000-0003-3990-9353
SPIN-code: 6033-5816

MD, PhD

Russian Federation, 98 Bolshevistskaya str., 430005, Saransk

Denis O. Vladimirov

National Research Ogarev Mordovia State University

Email: d.o.vladimirov@yandex.ru
ORCID iD: 0000-0002-2121-8346
SPIN-code: 1070-6203

Post-Graduate Student

Russian Federation, 98 Bolshevistskaya str., 430005, Saransk

Tatyana S. Shablinova

National Research Ogarev Mordovia State University

Email: Doc.Parshina@yandex.ru
ORCID iD: 0000-0003-4401-8395
SPIN-code: 7409-3568

Post-Graduate Student

Russian Federation, 98 Bolshevistskaya str., 430005, Saransk

Evgenia N. Tyagusheva

National Research Ogarev Mordovia State University

Email: evgenia.tyagusheva@yandex.ru
ORCID iD: 0000-0002-1193-3178
SPIN-code: 5039-9934

Student

Russian Federation, 98 Bolshevistskaya str., 430005, Saransk

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Supplementary files

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2. Fig.1. Decreased QRS amplitude in a child with myocarditis

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3. Fig.2. Fragmented QRS (fQRS)

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4. Fig.3. Epsilon wave

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5. Fig.4. The phenomenon of early ventricular repolarization in a healthy teenager

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6. Fig.5. ECG of a child with prolongation of the QTc interval (QTc 469 ms)

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