Tags: Disease.

Postanesthetic shivering (PAS) is shivering after anesthesia.The intensity of PAS may be graded using the scale described by Crossley and Mahajan: 0 = no shivering; 1 = no visible muscle activity but piloerection peripheral vasoconstriction or both are present (other causes excluded); 2 = muscular activity in only one muscle group; 3 = moderate muscular activity in more than one muscle group but no generalized shaking; 4 = violent muscular activity that involves the whole body.Postanesthetic shivering is one of the leading causes of discomfort in patients recovering from general anesthesia.

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