• Patient with history of influenza-like illness ~1 month ago who presents with acute dyspnea, fatigue, light-headedness, ECG changes and echo showing hypokinesis with normal valves, most consistent with a postviral myocarditis
• Key idea: On NBME exams, if a young patient presents with signs of cardiogenic shock without trauma, a common cause is myocarditis
• Acute constrictive pericarditis would be seen in patient with radiation to the chest, open heart surgery or some other insult that would lead to fibrosis of the pericardium

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