LAUSR

SARS‐CoV‐2 vaccines provide a safe solution with a major impact on reducing the spread of the virus and mild side effects. Research has shown rare cases of myocarditis after mRNA vaccines. This study presents a 29‐year‐old male with chest pain after 48 h of receiving rAd26 and rAd5 vector‐based COVID‐19 vaccine (Sputnik V vaccine). The electrocardiogram revealed ST‐segment elevation. Also, the laboratory screening was remarkable for elevated cardiac Troponin‐I level, and leukocytosis; and echocardiography depicted severe left ventricular systolic dysfunction. Overall, endomyocardial biopsy proved lymphocytic myocarditis such that the patient was successfully treated with immunosuppressive and guideline‐directed medical treatment.