38. regressive changes in the heart muscle and their pathological appearance. Myocarditis Flashcards
regressive changes in heart muscle
hydropic degeneration
fatty infiltration
fatty degeneration
lipofuscinosis
myofibrillar degeneration
mineralization
myocardial necrosis
cause of myocardial necrosis
nutritional deficiencies
toxicities
physical injuries and shock
infections
myocardial infarct
toxicities causing myocardial necrosis
ionpohores
vit d
calcinogenic
t2 mycotoxin
uraemia
myocardial necrosis
focal, multifocal, diffuse
pale, dry
+/- gritty
outcome is either acute or chronic cardiac failure
healing of myocardial necrosis
by fibrosis
hydropic degeneration
due to
antineoplastic drugs
antiretroviral drugs
autointoxication
fatty infiltration
between the cardiac muscle fibres
fatty degeneration
in the sarcoplasma
due to anaemia and toxemia
lipofuscinosis
brown atrophy, accumulation of debris
due to ageing and cachexia
myofibrillar degeneration
aka myocytolysis
furazolidon toxicity in plants
mineralization
due to
vit e deficiency
vit d toxicity
calcinogenic plants
myocarditis cause
infections spread hematogenously to the myocardium
inflammation can spread from endo/peri cardium
lesions of myocarditis
pale areads
abscess or phlegmone in suppurative myocarditis
Outcome of myocarditis
complete resolution
residual scars
progressive myocardial damage
viral diseases causing myocarditis
parvo
pseudorabies
FMDV
encephalomyocarditis
distemper