Chapter 13 Shock

Shock can mean anything from a frightening or unexpected event to a fatal collapse of the body’s circulation. Physiological shock is a dramatic reduction in blood flow that, if left untreated, can lead to collapse, coma and even death. Our favourite definition is ‘systemic hypoperfusion owing to a reduction in either cardiac output or the effective circulating blood volume’. It is associated with hypotension. The clinical features of shock are caused by the cellular hypoxia resulting from reduced tissue perfusion. If relatively mild, the hypoxia causes reversible tissue injury. If severe or prolonged, irreversible cell damage occurs.


Shock can be classified according to pathogenesis into a number of types (Table 3.13.1). Hypovolaemic, cardiogenic and septic shock are the most common types.

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Jul 3, 2016 | Posted by in MUSCULOSKELETAL MEDICINE | Comments Off on Shock

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