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Degrees of Hypothermia

This chart describes what happens to the human body as the Core Body Temperature (CT) drops.

Temperature Clinical Findings
37°C Normal oral temperature
36°C Metabolic rate increases
35°C Maximum shivering seen; Impaired judgment
33°C Severe clouding of consciousness
32°C Most shivering ceases and pupils dilate
31°C Blood pressure may no longer be obtainable
28-30°C Severe slowing of pulse/respiration; Increased muscle rigidity; Loss of consciousness
27°C Loss of deep tendon, skin and papillary reflexes; Patient appears clinically dead
20°C Complete cardiac standstill