Depends on severity: There may be no symptoms while the ekg and blood samples have the appearance of an acute myocardial infarction (heart attack). Some people have chest pain that can mimic a heart attack or pleurisy. Arrhythmias/palpitations may occur. A severe contusion can cause a pericardial effusion with tamponade, leading to death if untreated. The symptoms are shortness of breath and low blood pressure.
Answered 11/23/2017
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