Hypothermia. Environmental injuries

Heatstroke

ENVIRONMENTAL INJURIES

Burns

Trench Foot

This condition results from many hours or days of exposure to wet or damp conditions at a temperature just above freezing. The nerves and muscles sustain the main damage, but gangrene can occur. In extreme cases the flesh dies and it may become necessary to have the foot or leg amputated. The best prevention is to keep your feet dry. Carry extra socks with you in a waterproof packet. Dry wet socks against your body. Wash your feet daily and put on dry socks.

The following field treatment for burns relieves the pain somewhat, seems to help speed healing, and offers some protection against infection:

• First, stop the burning process. Put out the fire by removing clothing, dousing with water or sand, or by rolling on the ground. Cool the burning skin with ice or water. For burns caused by white phosphorous, pick out the white phosphorous with tweezers; do not douse with water.
• Soak dressings or clean rags for 10 minutes in a boiling tannic acid solution (obtained from tea, inner bark of hardwood trees, or acorns boiled in water).
• Cool the dressings or clean rags and apply over burns.
• Treat as an open wound.
• Replace fluid loss.
• Maintain airway.
• Treat for shock.
• Consider using morphine, unless the burns are near the face.

Heatstroke, hypothermia, diarrhea, and intestinal parasites are environmental injuries you could face.

The breakdown of the body's heat regulatory system (body temperature more than 40.5 degrees C [105 degrees F]) causes a heatstroke. Other heat injuries, such as cramps or dehydration, do not always precede a heatstroke. Signs and symptoms of heatstroke are--

• Swollen, beet-red face.
• Reddened whites of eyes.
• Victim not sweating.
• Unconsciousness or delirium, which can cause pallor, a bluish color to lips and nail beds (cyanosis), and cool skin.

Note: By this time the victim is in severe shock. Cool the victim as rapidly as possible. Cool him by dipping him in a cool stream. If one is not available, douse the victim with urine, water, or at the very least, apply cool wet com-presses to all the joints, especially the neck, armpits, and crotch. Be sure to wet the victim's head. Heat loss through the scalp is great. Administer IVs and provide drinking fluids. You may fan the individual.

Expect, during cooling--

• Vomiting.
• Diarrhea.
• Struggling.
• Shivering.
• Shouting.
• Prolonged unconsciousness.
• Rebound heatstroke within 48 hours.
• Cardiac arrest; be ready to perform CPR.

Note: Treat for dehydration with lightly salted water.

Defined as the body's failure to maintain a temperature of 36 degrees C (97 degrees F). Exposure to cool or cold temperature over a short or long time can cause hypothermia. Dehydration and lack of food and rest predispose the survivor to hypothermia.

Unlike heatstroke, you must gradually warm the hypothermia victim. Get the victim into dry clothing. Replace lost fluids, and warm him.

Дата добавления: 2014-12-23