Temporal evolution of electrocardiographic anomalies observed in a young woman after COVID?19 vaccine

Abstract

Electrocardiographic alterations of ventricular repolarization have already been reported in cases of myocarditis following coronavirus disease?19 (COVID?19) vaccine, but it is not clear how long they persist. A 21?year?old female presented with chest discomfort and diffuse myalgia a week after receiving the first dose of a messenger RNA (mRNA)  OVID-19 vaccine. The 12 leads standard electrocardiogram unveiled negative T waves in anterior and inferior leads, while her troponin?I values resulted in the upper limit. A mild form of post?COVID?19 vaccine myocarditis was diagnosed since the echocardiogram excluded major systolic  lterations and pericardial effusions. The patient refused hospitalization, but luckily, she remained hemodynamically stable, presenting a quick clinical response to oral non-steroidal anti-inflammatory therapy. However, the electrocardiographic abnormalities required weeks for resolving. In our case, the later normalization of electrocardiographic anomalies was not associated with an ominous clinical course.