Table 3. Summary of Diagnostics for Myocarditis Post COVID-19 Vaccination.

mRNA; messenger RNA, LV; left ventricle, RBBB; right bundle branch block, EKG; electrocardiogram, MRI; magnetic resonance imaging

	Patient 1	Patient 2
Vaccine received	mRNA-1273 (Moderna)	Ad26.COV2.S (Johnson & Johnson)
Highest troponin	1.19	15.65
EKG changes	Diffuse ST elevations, RSR’ in V1 and V2	Normal sinus rhythm with incomplete RBBB
Cardiac MRI findings	1) Subepicardial pattern of myocardial fibrosis and focal elevations in the myocardial T1 and (Extra Cellular Volume) 2) Enhancement of the pericardium adjacent to the RV free wall and adjacent to the lateral LV wall 3) Small pericardial effusion	1) Subepicardial pattern of myocardial fibrosis on late gadolinium enhancement imaging in multiple wall segments, involving 26% of the myocardial mass 2)Numerous wall segments with elevated myocardial T2 values on parametric mapping  3)Markedly elevated myocardial ECV (Extra Cellular Volume) values 4)Small pericardial effusion