PMC9932914_01
Electrocardiogram results. ECG was recorded with a set of 12-lead ECG electrodes connected to a central unit software. ECG was taken 8 h (A) or 13 days (B) after the administration of the BNT162b2 messenger RNA (mRNA) (Pfizer-BioNTech) vaccine.
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F1
MRI results. Cardiac MRI 16 days after the administration of the BNT162b2 messenger RNA (mRNA) (Pfizer-BioNTech) vaccine, 1.5-T MR system. Delayed enhancement sequence in the long axis (A) and short axis (B). Arrows indicate an area of myocardial fibrosis with a non-ischemic pattern in the basal lateral wall, compatible with myocarditis.
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F2
Nevertheless, the cardiac magnetic resonance image (Figure 2) documented myocardial non-ischemic fibrosis 5 days later, with a cardiac enhancement non-ischemic pattern with diffuse edema.
PMC9932914_02
Timeline of the patient's previous cardiac diseases, myocarditis, and pericarditis post-BNT162b2 messenger RNA (mRNA) (Pfizer-BioNTech) vaccine.
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F3
A timeline of events is presented in Figure 3.