From: Accidental hypothermia: direct evidence for consciousness as a marker of cardiac arrest risk in the acute assessment of cold patients
Stage
Brown et al. [27] symptoms/signs
Typical core temperature (°C)
HT I
Conscious, shivering
32 to 35
HT II
Impaired consciousness, not shivering
28 to < 32
HT III
Unconsciousness
24 to < 28
HT IV
No vital signs
< 24