1, don't go swimming alone, let alone in places where you don't know the bottom and water conditions, or dangerous places where drowning casualties are likely to occur. Choose a good swimming place and have a clear understanding of the environment of the place, such as whether the reservoir and bathing place are sanitary, whether the water surface is flat, whether there are reefs, undercurrents, weeds and the depth of water.
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You must be organized and swim under the guidance of a teacher or someone familiar with water. Take care of each other. If a collective organization goes swimming, it is necessary to count the number of people before and after launching and designate lifeguards for safety protection.
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Pay attention to your health. People who are prone to cramps in limbs should not take part in swimming or swim in deep water. Get ready before you go into the water and exercise first. If the water temperature is too low, wash your body with shallow water first, and then go swimming after getting used to the water temperature. Students with dentures should take them off to prevent them from falling into the esophagus or trachea when choking.
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4. Be self-aware of your water quality. Don't try to be brave after entering the water. Don't dive and snorkel rashly, and don't fight with each other, lest you drown by drinking water. Don't swim in rapids and whirlpools, let alone drink and swim.
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5. If you suddenly feel unwell during swimming, such as dizziness, nausea, palpitation, shortness of breath and so on. , should immediately go ashore to rest or call for help.
6, in swimming, if the calf or leg cramps, don't panic, you can kick or jump hard, or massage hard, strain the cramp, and call for help to your partner.
7. When a drowning accident occurs in swimming, the first aid on the spot is urgent, and cardiopulmonary resuscitation is the most important. After the drowning person is rescued ashore, the vomit, sediment and other impurities in the oral cavity and nasopharyngeal cavity should be removed immediately to keep breathing smooth; The tongue should be pulled out to avoid backward turning and blocking the respiratory tract; Raise the belly of the drowning person, make his chest and head droop, or hold his legs, put his belly on the rescuer's shoulder, and do the action of walking or jumping to "pour water". Restoring the drowning person's breathing is the key to the success of first aid. Artificial respiration should be carried out immediately, and mouth-to-mouth or mouth-to-mouth artificial respiration can be used. At the same time of first aid, you should be sent to the hospital for treatment quickly.