Severity of hypothermia according to the Swiss classification system.
Stage | Core body temperature °C | Stage description | Clinical symptoms |
I | 35-32 | Mild hypothermia | Patient clear, cold shiver |
II | 32-28 | Moderate hypothermia | Patient slows, no cold shivering |
III | 28-24 | Severe hypothermia | Patient unconscious, breathing |
IV | < 24 | Circulatory arrest or minimal circulation | Patient unconscious, respiratory and circulatory arrest |
V | < 13,7 * | Death due to irreversible hypothermia |
* The lower temperature limit given according to the Swiss classification system for hypothermia is not defined with certainty as an absolute limit in the scientific literature.