Frequency and Characteristics of Early Ventricular Repolarization Syndrome in Patients Diagnosed with Myocarditis

Abstract

Introduction: The syndrome of early ventricular repolarization (CPR) is an electrocardiographic phenomenon characterized by the presence of ST segment elevation (J point, notch or connection wave on the descending part of the R wave, sometimes resembling the r’ wave), the rotation of the electrical axis of the heart counterclockwise along the longitudinal axis. The result of a number of studies has shown the prognostic value of CPR in patients with acute myocardial infarction (MI). Patel R. and co-authors, analyzing the ECG in patients with a history of MI and with an implanted cardioverter-defibrillator, found that CPR in this group is associated with the development of life-threatening rhythm disturbances regardless of the left ventricular ejection fraction.

Objectives: Objective: to study the frequency of early ventricular repolarization syndrome in patients diagnosed with myocraditis.

Methods: The 1st study group included 63 patients diagnosed with myocarditis, the 2nd study group included 108 patients undergoing medical examination in polyclinics who underwent ECG diagnostics.

Results: In group 1, CPR was detected in 14.28% of the examined (9 patients) (average age 45.8±9.5 years, 37 men, 26 women), in group 2, CPR was registered in 10.1% of patients (11 patients) (average age 42.7±6.2 years).. Statistical analysis revealed no difference between the incidence of CPR in patients with myocarditis and polyclinic patients (p>0.05).

Conclusions: In patients with myocarditis, CPR was more common in standard leads in the form of a notch.