MB and COVID-19: NYHA IV hospitalized patients with COVID-19 had the highest median values of fibrinogen (7.2 g/L, p-value = 0.048), BNP (1170 pg/mL, p-value < 0.001), CK-MB (37 U/L, p-value < 0.001) LDH (336/U/L, p-value = 0.012), myoglobin (3.9 nmol/L, p-value < 0.001), and troponins, as described in Table 3.