| Reference | Number of cases | Country | Age | Sex | Physical exam | ECG | Echo | Elevated labs | Imaging | Treatment | Outcome |
| [19] | 1 | China | 55 d | F | Tachycardia, respiratory distress, pharyngeal hyperemia, cough | NA | NA | Troponin, CK-MB, procalcitonin | Ground-glass opacities, pneumonia | IVIG, inhaled interferon alfa 1b, glutathione, Chinese lotus qingwen | Survived | [20] | 1 | China | 13 m | M | Cough, crackles | NA | Heart failure | CRP, creatinine kinase, D-dimer, IL6, interferon-gamma, | Multiple patch-like shadows, pneumonia | Virazole, oseltamivir, interferon, IVIG, steroids, oxygen therapy, mechanical ventilation | Survived | [21] | 9 | China | 11 m-10 y | 3M | Productive cough | NA | NA | CK-MB, Pro-BNP, D-dimer | Pulmonary consolidation, ground-glass opacities | Inhaled interferon, ribavirin, lopinaviritonavir | NA | [17] | 13/2135 | China | 0–18 y | 12M | NA | NA | Heart failure | NA | NA | NA | NA | [22] | 3 | USA | 6–13 y | 2M | Tachycardia, tachypnea, hypotension, systolic murmur, dyspnea | Sinus tachycardia | Depressed function, MR, flow reversal in descending aorta, pericardial effusion | Procalcitonin, D-dimer, fibrinogen, troponin, CRP, LDH | NA | IL6 inhibitor, IVIG, hydroxychloroquine | Survived | [23] | 21 | France | 3–17 y | 9M | Cough | QT prolongation, ST-segment elevation, ventricular arrhythmia | Coronary artery dilatation, myocarditis, pleural effusion, depressed ejection fraction | CRP, procalcitonin, IL6, Pro-BNP, D-dimer | Local patchy shadows, ground-glass opacities, interstitial abnormalities | IVIG, aspirin, corticosteroids, inotropes, oxygen support, mechanical ventilation | Survived | [24] | 1 | USA | 6 y | F | Syncope, respiratory distress, hypotension | Junctional rhythm | Depressed ejection function, MR | CRP, procalcitonin, Pro-BNP, D-dimer | Diffuse patchy infiltrates | Aspirin, IVIG, inotropic support, oxygen support, ECMO | Survived | [25] | 99 | USA | 0–20 y | 53M | Hypotension, cough, shortness of breath, wheezing | NA | Ventricular dysfunction, pericardial effusion, CAA | Troponin, Pro-BNP, D-dimer, CRP, fibrinogen, ferritin, ESR | Opacities, pleural effusion | Corticosteroids, IVIG, oxygen support, inotropic support, ECMO | 2/99 died | [26] | 186 | USA | 0–20 y | 115M | NA | NA | Coronary artery dilatation, CAA, depressed EF, pericardial effusion | Pro-BNP, troponin, D-dimer, fibrinogen, INR | NA | IL6 inhibitors, IL1Ra inhibitor, IVIG, corticosteroids mechanical ventilation, ECMO, vasopressor support, oxygen support | 4/186 died | [27] | 15 | USA | 3–20 y | 11M | Cough, dyspnea, chest pain, tachycardia, hypotension | Ventricular tachycardia, and ectopy, diffuse ST elevation | Depressed LV/biventricular function, coronary artery ectasia and dilatation, cardiogenic shock | Troponin, Pro-BNP, fibrinogen, CRP, D-dimer, procalcitonin, IL6, IL8, TNF alfa | Ground-glass opacities, pleural effusion | IVIG, steroids, anakinra, remdesivir, inotropic support, anticoagulation, mechanical ventilation, ECMO, intraaortic balloon pump, tocilizumab, COVID-19 convalescent plasma, | 1/15 died | [28] | 5 | France and Switzerland | 2–16 y | 18M | Respiratory distress, chest pain | Ventricular arrhythmia, nonspecific ST elevation | Cardiogenic shock, LV dysfunction and hypokinesis, coronary artery dilatation, pericardial effusion | Troponin, creatinine kinase, Pro-BNP, D-dimer, CRP, procalcitonin, IL6 | NA | Inotropic support, mechanical ventilation, ECMO, IVIG, steroids, anakinra | Survival | [29] | 4 | USA | 3–20 y | 3M | Tachycardia | Low voltage nonspecific T-wave changes, right axis deviation, ST-segment elevation, QTc prolongation | Myocarditis, MR, depressed LV and RV functions, pericardial effusion | CRP, ferritin, troponin, pro-BPN, D-dimer, ferritin, fibrinogen | NA | IVIG, anticoagulation, tocilizumab, convalescent plasma, mechanical ventilation, ECMO | 1/4 died | [30] | 1 | USA | 6 m | F | Tachycardia, tachypnea | NA | Normal | ESR, CRP | Opacities | Aspirin, IVIG | Survived | [31] | 156 | France | 5–11 y | 77M | NA | NA | Myocarditis | NA | NA | Mechanical ventilation, inotropic support | 1/156 died |
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