Question

a previously healthy patient presents with sudden onset of dyspnea, fatigue, and orthopnea. a family history is negative. the provider suspects myocarditis. what is the most likely etiology for this patient?
autoimmune disorder
bacterial infection
protozoal infection
viral infection

Explanation:

Viral infections are a common cause of myocarditis, especially in previously healthy individuals with no family - history of heart problems. Viruses can directly invade the heart muscle or trigger an immune - mediated response that damages the myocardium. Autoimmune disorders usually have a more chronic course and may present with other systemic symptoms. Bacterial and protozoal infections are less common causes of myocarditis compared to viral infections.

Answer:

Viral infection