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How to protect your ears when diving
In the deep sea diving process, ear compression injury will have a certain impact on beginners. Beginners must go through professional training before diving. However, the maintenance of the balance of the ear pressure is not well grasped, and the ear compression injury will rush to the point where it can even cause drowning.
1, maintain the balance of ear pressure:
Washa Yushi operates with his right thumb and index finger to squeeze the nose completely tightly and then blows his nose firmly. At this time, because the nostrils are tight, the air flows to the Eustachian tube. When the strength is high enough, the Eustachian tube can be opened and the air can be opened. Enter the middle ear to balance the pressure. However, when the air pressure is too low or the nostrils are not tight enough to leak, the Eustachian tube is not easy to open because of insufficient pressure. If the air is too strong, it will cause damage to the middle ear due to excessive middle ear pressure, and it will also increase. Inner ear lymph pressure caused inner ear compression injury. Therefore, this method is used with caution.
Other safer methods: yawning, opening your mouth to move your jaw, swallowing water, and the like.
2. Ear protection during diving:
1) During the dive, do flat pressure. When doing ear pressure balancing, do not apply too much pressure or continue for too long. Otherwise it may cause ear damage. If the diver does not perform a drumming action when he dives, the eardrum will become edematous and congested, and finally the inward projection of the eardrum will break. After the dilator breaks, the water will enter the middle ear to reach a pressure balance, and the middle ear pain will disappear. Inject cold water into the middle ear cavity to cause nausea and dizziness in the inadvertent person; when the water temperature in the middle ear cavity is the same as the body temperature, the symptoms will stabilize. Seawater temperature is cold, and the cold seawater will stimulate the inner ear, causing dizziness, loss of sense of direction, and drowning events.
2) After the dive, it is impossible to balance the pressure, and slowly increase the pressure to reduce the water pressure and try again. If the flat pressure still fails to work, you should abandon the dive.
3), control the speed of dive, to avoid the dive too fast and can not do flat pressure, you can use the rope to dive.
4) When it is difficult to balance the ear pressure, use the posture under the head and feet to dive and let the air from the nasopharyngeal area to the middle ear through the pharynx.
3, the following categories of personnel are not suitable for diving:
1) The eustachian tube is not smooth, including rhinitis, polyps, laryngeal cysts, nasal septum bending, etc. After treatment is required to be evaluated. If a cold causes eustachian tube edema, the dive plan should be abandoned.
2), tympanic membrane perforation does not completely heal
3) Monotonous tympanic membrane
4), middle ear recovery, not tympanic membrane repair
5) History of inner ear surgery
6) After laryngectomy or partial resection, laryngeal insufficiency cannot be closed when the eustachian tube is dilated
7) History of vestibular decompression
8), inner ear labyrinthitis
9) Lymphatic spasm
10) Pearly tumor cholesteatoma
11) Deafness and external auditory canal deafness are occluded.
12) The external auditory canal is narrow or locked
13), tracheotomy, tracheal fistula
14) Congenital or acquired hearing loss
Precautions
Not suitable for divers should be careful
Online travel in the deep sea must be slowly upward