Climate First Aid: How to Respond to Heat Stroke and Hypothermia

When Weather Becomes a Health Threat

Extreme weather events not only affect crops and infrastructure but also pose direct risks to human health. In South America, where temperatures can range from 45°C in the Chaco to -25°C in Patagonia, knowing climate first aid is essential. Heat stroke and hypothermia are two medical emergencies that require immediate intervention, and proper management can save lives.

Heat Stroke: When the Body Loses Thermal Control

Heat stroke occurs when body temperature exceeds 40°C and the thermal regulation system fails. Unlike heat exhaustion or sunstroke, heat stroke is a medical emergency that can damage vital organs and cause death in less than an hour if not treated properly.

Warning Symptoms

Recognizing early signs is crucial for timely intervention:

• Body temperature above 40°C (measured with a thermometer)
• Hot, red, and dry skin (without sweating)
• Rapid and strong pulse
• Severe headache
• Confusion, disorientation, or loss of consciousness
• Seizures in severe cases

Immediate First Aid

If you suspect someone is suffering from heat stroke:

1. Call emergency services immediately (911 or local number)
2. Move the person to a cool, shaded place
3. Cool rapidly with any available method: wet cloths, cold water bath, ventilation
4. Do not administer fluids if the person is unconscious or confused
5. Monitor breathing until medical help arrives

Prevention in Warm Climates

In regions like northern Argentina, Paraguay, or northeastern Brazil, where heat waves are frequent:

• Avoid intense activities between 10:00 AM and 4:00 PM
• Wear light, light-colored clothing made of breathable fabrics
• Drink water regularly, even if not thirsty (2-3 liters daily)
• Use a wide-brimmed hat and sunscreen
• Pay special attention to children, the elderly, and people with chronic illnesses

Hypothermia: The Cold That Paralyzes

Hypothermia occurs when body temperature drops below 35°C. In Andean or Patagonian regions, or during extreme weather events, this risk increases significantly. Hypothermia progresses in three stages, each with specific symptoms.

Stages and Symptoms

• Mild Hypothermia (32-35°C): Uncontrollable shivering, pale skin, difficulty speaking
• Moderate Hypothermia (28-32°C): Shivering stops, confusion, clumsy movements, weak pulse
• Severe Hypothermia (below 28°C): Loss of consciousness, shallow breathing, risk of cardiac arrest

First Aid Actions

In a case of hypothermia:

1. Seek shelter immediately from wind and moisture
2. Remove wet clothing carefully (cutting it if necessary)
3. Warm gradually with dry blankets, skin-to-skin contact
4. Offer warm, sweet drinks only if the person is conscious
5. Do not rub the extremities or use direct heat (heating pads, hot water)
6. Transport to a medical center even if the person seems to recover

Preparation for Cold Climates

For those living in or traveling to cold regions:

• Use the layering system: first layer breathable, second insulating, third waterproof
• Protect extremities with gloves, thermal socks, and a hat (30% of heat is lost through the head)
• Maintain a high-calorie diet during outdoor activities
• Recognize early signs in yourself and companions
• Always carry emergency equipment on excursions: thermal blanket, energy foods, communication device

Most Vulnerable Groups

Certain population groups require special attention:

• Elderly: Their thermal regulation system is less efficient
• Young children: Greater body surface area relative to their weight
• People with chronic illnesses: Diabetes, heart or respiratory problems
• Outdoor workers: Farmers, construction workers, emergency personnel
• Athletes and hikers: Due to prolonged exposure and physical exertion

The Role of Technology in Prevention

Applications like Contingencias allow anticipating climate risks:

• Early warnings for heat waves and extreme cold
• Hyperlocal forecasts for planning activities
• Specific recommendations based on your location and profile
• Hydration reminders on hot days
• Information about shelters and care centers during extreme events

Conclusion: Preparedness That Saves Lives

Climate first aid is not just medical knowledge but a tool for climate change adaptation. In a region where extreme events are becoming increasingly frequent, recognizing the symptoms of heat stroke and hypothermia, knowing how to act quickly, and taking preventive measures can make the difference between an unpleasant experience and a tragedy. The combination of traditional knowledge, personal preparedness, and early warning technology allows us to live more safely with our climate, however extreme it may be.