Myocarditis

Myocarditis

·        = Inflammation of the myocardium, excluding IHD

·        Suppurative myocarditis: focal necrosis, pyogenic abscesses or diffuse spreading infection. Neutrophil infiltrate

·        Interstitial myocarditis:

o  Characteristic of viral myocarditis

o  Occurs mainly in children and young women

o  Most have benign, self limiting course

o  Microscopic appearance: oedema, chronic inflammatory cells

·        Parenchymatous myocarditis: diffuse, patchy destruction of muscle cells. Associated with diphtheria, typhoid, some b haemolytic streptococci, protozoa and parasitic infections

·        Miscellaneous: Idiopathic (giant cell, Fiedler‟s).  Also autoimmune disease or hypersensitivity to drugs