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Hyperaemia (General (Etiology (Systemic disease (Pasteurellosis, Rapid…

- - - - Pasteurellosis
      - Rapid beating heart
      - Erysipelas
    - - Renal disease
    - - Blood
      - Plasma
      - Electrolyte
- - - - Digestion, in stomach and intestine after a meal
      - Lactation, in mammary gland
      - Estrus, at genital tract
      - Exercise
    - - Excessive physiological vascular changes for unusual long period
        
        Inflammation, dilatation of vessel wall
        
        After temporary anemia
        
        Tornique
  - - - Supply nutrients, O2
      - Waste removal
      - Bring Ig, leukocytes in plasma
      - Dilute irritants to less harmful
- - - - Chronic
      - Acute
        
        Degeneration and necrosis of myocardium
        
        Injury, not enough strength to overcome elasticity of arteries and maintain blood pressure
        
        Sudden myocardial accidients
        
        Infarction due to emboli in coronary vessels
        
        Pneumonia
        
        Capillaries compressed by exudate, blood cant flow through
        
        Pulmonary embolism/ thrombosis
        
        Hydropericardium, hemopericardium, pyopericardium
        
        Fluid in pericardial sac presses on heart, x normal diastole
        
        Hydrothorax, hemothorax, pyothorax