Which of these is a criterion for severe hypothermia?

Severe hypothermia is characterized by a significant decrease in core body temperature, specifically when the core temperature drops below 32°C (89.6°F). At this critically low temperature, the body's ability to function properly becomes severely impaired. Physiological processes are disrupted, leading to symptoms such as confusion, decreased heart rate, and lack of coordination. This level of hypothermia poses a high risk for life-threatening complications if not addressed promptly.

Increased shivering is associated with mild to moderate hypothermia as the body attempts to generate heat, while a normal mental status typically indicates that the individual is not experiencing severe hypothermia, as cognitive function tends to deteriorate at critical temperature thresholds. A core temperature above 35°C still falls within the normal range and does not indicate any hypothermia at all. Therefore, identifying a core temperature below 32°C is essential in recognizing and diagnosing severe hypothermia, enabling appropriate emergency response and treatment.