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Myocarditis

Etiology
1. Lymphocytic
2. Acute infectious
  1. Viral illness
    1. Coxsackie Virus B (most common)
    2. Influenza
    3. Hepatitis
    4. Adenovirus
    5. HIV Infection
    6. Cytomegalovirus (CMV)
  2. Tropical Disease
    1. Trypanosoma cruzi (Chagas' Disease)
Symptoms
1. Most cases are mild and asymptomatic
2. Palpitations
3. Symptoms secondary events
  1. Myocardial Infarction
  2. Congestive Heart Failure
Signs
1. Pericardial Friction Rub
2. Loud S3 Gallop
Labs
1. Creatine Phosphokinase (CPK) increased
2. Sedimentation Rate (ESR) >60 mm/h
3. Leukocytosis
Diagnostics
1. Electrocardiogram
  1. ST segment elevation progresses to T Wave inversion
  2. Normalizes in 2 months
2. Chest XRay
  1. Cardiomegaly in 50% cases

Myocarditis (C0027059)
Definition (MSH)	Inflammatory processes of the muscular walls of the heart (MYOCARDIUM) which result in injury to the cardiac muscle cells (MYOCYTES, CARDIAC). Manifestations range from subclinical to sudden death (DEATH, SUDDEN). Myocarditis in association with cardiac dysfunction is classified as inflammatory CARDIOMYOPATHY usually caused by INFECTION, autoimmune diseases, or responses to toxic substances. Myocarditis is also a common cause of DILATED CARDIOMYOPATHY and other cardiomyopathies.
Definition (CSP)	inflammation of the muscular walls of the heart.
Concepts	Disease or Syndrome (T047)
ICD9	429.0, 429.0
MSH	D009205
English	Myocardial inflammation, Myocarditides, Myocarditis
Spanish	inflamacion miocardica, miocarditis
Parent Concepts	cardiac inflammation or infection (C0679400), Cardiomyopathies (C0878544), HEART: MYOCARDIUM/PERICARDIUM (C0549606), Ill-defined descriptions and complications of heart disease (C0155711), Myocarditis (C0027059), Carditis (C0869523), Duplicate concept (C1274013)
Sources	AOD, COSTAR, CSP, CST, DXP, ICD9CM, LCH, MSH, MTH, MTHICD9, NCI, NDFRT, SCTSPA, SNOMEDCT Derived from the NIH UMLS (Unified Medical Language System)