Pyrexia may be indicative of infection (see Maintaining a safe environment, Section 2.2.1). Closs (1985) found a 100% association between perioperative pyrexia and the later development of respiratory infection. However, this finding was not supported in a later study by Payman et al. (1989). Pyrexia is a debilitating condition which increases the metabolic rate and is often accompanied by anorexia and dehydration. It may also cause restlessness.
Hypothermia causes a shutdown of the blood supply to the periphery. The blood supply to wounds on the limbs is likely to be severely curtailed. The surface of the wound may become quite necrotic as a result.
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