Picture 02 of blackboard material with the theme of preventing drowning in summer

Blackboard information with the theme of summer drowning prevention Picture 03 Safety education knowledge of drowning prevention.

Prevent muscle spasm when swimming.

(1) Be prepared before swimming.

(2) If you are too full, hungry or tired, don't swim.

(3) Before swimming, splash some water on the limbs to adapt to the temperature of the pool water and then jump into the water.

(4) When swimming, if you have intercostal muscle spasm (fork gas), you can take a few deep breaths. If it can't be alleviated, hurry ashore.

(5) When abdominal pain occurs, you should go ashore immediately, do abdominal stretching exercises, and massage your abdomen with your hands.

What should I do if my ears get water while swimming?

Because water has a certain tension, it is easy to form a barrier after entering the narrow external auditory canal, which divides the external auditory canal into two sections; Because of the gravity of water, there is secondary pressure between the water barrier and the eardrum, which maintains the balance of pressure on both sides of the water barrier, making it difficult for water to flow out automatically. Sometimes there is large earwax in the external auditory canal (commonly known as earwax), so it is easier for water to wrap around the earwax after entering the ear canal, and it is not easy to flow out. After water enters the ear, it will cause deafness, dizziness and discomfort, so people often want to drain the water very urgently. Some people even use dirty clips, matchsticks, small keys, etc. It can break the water barrier and make water flow out, but it is also easy to damage the external auditory canal and even the eardrum.

After the water enters the ear, it should be discharged in time. The most common methods are:

(1) One-leg jump method: the affected ear is downward, and one leg jumps, and water flows downward from the external auditory canal by the gravity of water.

(2) Moving the external auditory canal method: You can press the tragus continuously with your palm or pull the auricle with your fingers, or repeatedly open your mouth to move the temporomandibular joint, which can make the skin of the external auditory canal move continuously, change the stability of water barrier and pressure, and make water flow out of the external auditory canal.

(3) External auditory canal cleaning method: gently probe into the external auditory canal with a clean cotton swab, and suck out the water when it comes into contact with the water barrier.

Because the swimming pool or river water is not clean, it is easy to cause skin and tympanic membrane infection of external auditory canal after sewage enters the ear. Improper treatment of accumulated water in the ear, such as unclean ear digging, can often cause the following ear diseases: otitis externa, furuncle of external auditory canal, cerumen obstruction, otitis media and suppurative otitis media.

If the above symptoms appear after entering the water, you should temporarily stop swimming and go to the hospital for examination and symptomatic treatment.