Precautions for outing

Matters needing attention when going out: 1. Bite by a poisonous snake: If bitten by a poisonous snake in the wild, the patient will have symptoms such as bleeding, local redness and pain, and severe cases will die within a few hours. At this time, it is necessary to quickly tie the upper part of the wound with cloth, handkerchief and tie. Prevent the spread of snake venom, then cut a knife with a length of 1 cm and a depth of about 0.5 cm at the wound with a sterilized knife, and suck out the venom with your mouth. If the oral mucosa is not damaged, its digestive juice can play a neutralizing role, so there is no need to worry about poisoning. When bitten or stung by insects: cold compress with cold water, and then apply ammonia or milk after pulling out the sting. Second, fracture or dislocation: after being fixed with splint, use cold compress. When you fall from a tree or rock and hurt your spine, put the patient on a flat and solid stretcher to prevent him from shaking, and then take him to the hospital. Third, food poisoning: eating spoiled food, in addition to abdominal pain and diarrhea, is accompanied by symptoms such as fever and fatigue. You should drink more drinks or salt water, or vomit the food. Fourth, the lost field trip distinguishes the north from the south: you can find a stump to observe, and the width of the annual ring is south; You can observe a tree with lush foliage on the south side and sparse foliage on the north side; Ants can be observed in caves, most of which face south; Where there are many rocks, you can also find an eye-catching rock to observe. The mossy side of the rock is the north side, and the dry and bare side is the south side. You can also use a watch to tell the direction: divide your time by 2, and then aim the quotient at the sun. The direction indicated by 12 on the dial is north. 5. What should I do when traveling in thunderstorm weather? Don't avoid thunderstorms under boulders, cliffs and caves. When the current passes through these places, it will produce an arc, which will hurt the rain shelter. If the cave is deep, you can try to hide in it. Don't ride a bike or horse in thunderstorm weather, which will lead to lightning. Don't hide in isolated huts in the wilderness. Leave the highlands and don't take shelter from the rain under the lonely tree. Stay away from metal objects. A car is an ideal place to avoid lightning. Even if lightning strikes a car, it rarely hurts people. If you are swimming or in a boat, you should go ashore immediately. Even on a big ship, you should hide under the deck!