Because of the recent news of hearing about the death of the mountain friends, many people were trapped in the mountains because of lost or injured, and finally died of physical exhaustion. So write this essay on hypothermia (low body temperature syndrome) to contribute to domestic friends who love the outdoors, to avoid the mountain to bring more casualties.
Hypothermia causes death, either directly or indirectly, perhaps more than any other combination of factors. Although the coroner declares that the cause of death is drowning in many deaths, the actual cause is the loss of consciousness due to hypothermia, which results in sudden death. Since hypothermia is the number one killer, it is essential to thoroughly understand it before entering the cold climate, including early symptoms and appropriate preventive measures.
First, what is hypothermia, how is it caused
The normal body temperature of the etiology is 37 C degrees. Hypothermia is the core temperature of the victim falls below 35 C. If the temperature falls below 32 C, the situation becomes severe and eventually fatal. Low temperatures, high winds, and wet underwear make people cold. Only exercise and trembling can make the body produce heat. Clothes, shelter, and fat layers prevent heat from being emitted but do not generate heat. Sweating reduces body temperature by evaporation. Shaking in the cold generates heat by increasing the chemical reactions required for muscle activity. Shaking can increase surface heat production by up to 500%, but it can only be effective within a few hours because it eventually leads to excessive glucose reduction and fatigue in the muscles. On a cold and windy mountain, after a physical overdraft exercise, it cools and wears wet underwear. If it is full of cotton underwear and the clothing is not warm enough, there is no hat and gloves, and when you lie down, you no longer exercise. At this time, heating and The factor of heat preservation is less than heat dissipation for a long time, which may lead to hypothermia.
1. Exposure (gradually) - The gradual loss of heat caused by breathing, evaporation (sweat or wet clothing) or lack of proper insulation in cold conditions.
2. Immersion type (burst) - Rapid loss of heat due to cold water conduction, manifested as rapid onset (only 10-30 minutes in seawater).
The former type of hypothermia is prone to any kind of outdoor activity, especially in the climate where the weather is variable, or when the traveler gets lost, injured or has insufficient food supply. Outdoor activities, including water sports, also have the danger of falling into water or the latter type of hypothermia. In almost all weather conditions, the body cools in water 25 times faster than in the air. In water at 10 degrees Celsius, if there is no heat protection equipment, people will lose their ability to save themselves after 30 minutes. Even after being rescued, the opportunity to survive after immersed in water for 1 hour is minimal.
Second, the symptoms of hypothermia
Uncontrolled trembling and not warming.
2, confused, angry, clumsy, vague words.
3, strange behavior, loss of sense of direction.
4, blurred vision, loss of coordination.
5, desperate and indifferent.
6, face and hands are gray.
7. Muscle stiffness replaces trembling.
8, off the clothes (because the brain's body temperature regulation system is weakened by the cold).
9, incoherent, prostration, loss of consciousness.
10, unable to complete a complex action, especially the hands do not listen to the eleven, pupil magnification.
12. Great decrease in heart rate.
13. At 32C degrees, the body enters a hibernation state, closing the blood flow in the arms and legs, dramatically reducing the heartbeat and respiratory rate.
14. At 30C, the body enters the "metabolic icebox" state where metabolism has almost ceased. It may seem dead, but it is still alive.
Dining Table Set,Dining Room Sets,Round Dining Table,Dining Room Tables
Bosa Furniture Co.,Ltd. , https://www.guangdongbosa.com