Table 1. Classification of Shivering Intensity in Patients (11).

Class	Status
0	Without shivering
I	Exfoliation of hair or environmental Vasoconstriction (no visible shivering)
II	Existence of muscle activity only in a muscle group
III	Muscular activity in more than one muscle group that does not occur in general
IV	it is included the shivering status of Total Body