A 72-year-old male is brought to the emergency department after being found collapsed in his backyard early in the morning. He was last seen the night before. HR 50 BP 100/50 GCS 10 T 27deg

1. List five potential causes of his hypothermia. 5 marks

2. Describe the expected core temperature and clinical findings for each stage of hypothermia 4 marks

3. List four complications that might develop during the rewarming of this patient. 4 marks