A 4 year old child child presents with fever, vomiting, and shortness of breath on exertion. Physical exam shows muffled heart sounds, fever, a gallop rhythm, and tachycardia. The best diagnosis for this child is
a. pericarditis
b. costochondritis
c. myocarditis
d. mitral valve prolapse
e. none of the above.

nk363987 Asked question July 16, 2021