Electrophysiological predictors of sudden cardiac death on physical exercise test in young athletes

1st International Symposium 'Physics, Engineering and Technologies for Bio-Medicine'

医药卫生;物理学;工业技术

Balykova, L.A.^1 ; Kotlyarov, A.A.^2 ; Ivyanskiy, S.A.^1 ; Shirokova, A.A.^1 ; Miheeva, K.A.^1 ; Makarov, L.M.^3

N.P. Ogarev Mordovia State University, Saransk, Russia^1

Obninsk Institute for Nuclear Power Engineering, Moscow, Russia^2

Center for Syncope and Cardiac Arrhythmia in Children, Adolescents of Federal Medico-biological Agency Clinical Hospital, Moscow, Russia^3

关键词: Coronary arteries;    Electrical instability;    Genetic testing;    Long qt syndromes;    Physical activity;    Physical exercise;    Recovery periods;    Sudden cardiac deaths;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/784/1/012011/pdf
DOI  :  10.1088/1742-6596/784/1/012011

来源: IOP

【 摘 要 】

The problem of sudden death of young athletes continues to be actual. Among its reasons, primary electric myocardium diseases along with organic heart troubles (cardiomyopathies, cordites, anomalies of coronary arteries) take an important place. The most frequent variant of channelopathesis long QT syndrome (LQTS). Both inherited and acquired LQTS may be the reason of sudden cardiac death during physical activity and have to be revealed prior to sports admission. LQTS diagnostics in young athletes become problematic due to secondary exercise-related QT prolongation. Physical load test may reveal myocardium electric instability and enhance LQTS diagnostics accuracy without genetic testing. The aim was to study electrophysiological parameters of myocardium repolarization and reveal the signs of electrical instability as predictors of the life-threatening arrhythmias in young athletes during physical exercise test. In conclusion, electrophysiological myocardium parameters during physical exercise test noted to be markers of electrical myocardial instability and in combination with the other Schwartz criteria, was evidenced the inherited or acquired LQTS. QTc prolongation in athletes at the peak of exercise as well as in early recovery period were noted to be additional predictor life-threatening arrhythmias and sudden cardiac death in young athletes.