Shock Definition : Shock is a life threatening clinical syndrome of cardiovascular collapse characterised by hypotension and hypoperfusion. Classification : 1. Hypovolaemic shock : This is occur due to circulatory blood volume. 2. Cardiogenic shock : Acute circulatory failure with sudden fall in cardiac output. 3. Septic shock : It is occur due to severe bacterial infection. 4. Other types : Traumatic shock, Neurogenic shock and Hypoadrenal shock. Pathogenesis : · Reduced effective circulating blood volume. · Impaired tissue oxygenation. · Release of inflammatory mediators. Morphological features : The morphologic changes in shock are due to hypoxia resulting in degeneration and necrosis of various organs like brain, heart, lungs and kidneys. Clinical features : Very low blood pressure, subnormal temperature, feeble and irregular pulse, shallow and sighing respiration, pale face, sunken eyes, w
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