CMC Cardiac Medicine Certification

Answer- A - In adolescents, pericarditis is most commonly caused by Adeno virus and Coxsackie virus. Dressler’s syndrome is a complication of myocardial infarction which does not occur in adolescent age group. Hypothyroidism is not a cause of myocarditis.
Etiology of myocarditis:
•Idiopathic
•Infectious
•viral: Coxsackie virus B, Echovirus, Poliovirus, HIV, mumps
•bacterial: S. aureus, C. perfringens, C. diphtheriae, Mycoplasma, Rickettsia
•fungi
•spirochetal (Lyme disease - Borrelia burgdorferi)
•Chagas disease (Trypanosoma cruzi), toxoplasmosis
•Acute rheumatic fever (Group A ß-hemolytic Streptococcus)
•Drug-induced: emetine, doxorubicin
•Collagen vascular disease: systemic lupus erythematosus (SLE), polyarteritis nodosa (PAN), rheumatoid arthritis (RA), dermatomyositis (DMY)