Quick Answer
Call for help after treating hypothermia in the field if the victim's condition doesn't improve, or worsens, despite rewarming efforts, especially after 2-3 hours of treatment.
Assessing the Victim’s Condition
After treating hypothermia, it’s crucial to continuously monitor the victim’s vital signs and neurological status. Check for signs of improvement, such as a rise in body temperature, increased circulation, and improved mental state. If the victim’s condition doesn’t show significant improvement or worsens, it may indicate severe hypothermia or afterdrop.
Understanding Afterdrop
Afterdrop occurs when a hypothermic victim’s body cools further after rewarming, usually due to shivering cessation. This can happen if the rewarming process is too rapid or if the victim’s core temperature drops below 28°C (82°F). To mitigate afterdrop, rewarm the victim gradually, aiming for a 0.5-1°C (0.9-1.8°F) increase in body temperature per hour.
When to Call for Help
In severe cases, hypothermia treatment in the field may not be sufficient, and the victim requires immediate medical attention. Call for help if the victim’s condition worsens, or if you notice signs of severe hypothermia, such as: unresponsiveness, confusion, loss of coordination, or a body temperature below 20°C (68°F). If possible, provide a detailed report of the victim’s symptoms, treatment, and your observations to aid in their care.
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