Question
A one-year-old baby has a fever, and a urine test shows elevated lymphocytes, indicating a viral infection. The creatine kinase level is 207, exceeding the normal range. However, everything returns to normal after the fever subsides. Could the baby have myocarditis?
Answer
Myocarditis refers to inflammatory changes in the myocardium, which may be accompanied by symptoms such as palpitations, dimness of vision, chest pain, chest tightness, or heart failure. Usually, during fever, creatine kinase levels may decrease, which could be myocardial damage caused by viral infection. After the fever subsides, creatine kinase levels can return to normal, so it is unlikely to be myocarditis in this situation.