![]() ![]() As soon as the ear is immersed, only the pressure constraints appear. We can therefore see that before any immersion, the ear can suffer damages very similar, or even identical to those encountered in air blasts. It can be more severe lesions of the inner ear with tinnitus and hearing damage (pressure and noise characteristic of the wave). ![]() It can be tinnitus by pressure blow on the inner ear via the stapes without lesion necessarily important, or even non-existent of the middle ear (tympanic congestion, blood or serous effusion behind the eardrum, or nothing). The consequences are identical with possible tympanic tear and more or less severe lesion of the middle ear or even of the inner ear. Here we have the pressure of the water in the canal and the (discrete) noise of the wave slapping the eardrum. This also concerns the swimmer and the freediver. On the surface, before any immersion, a strong wave can create a blast just like a slap. The pressure wave is almost zero and the sound trauma is strongly suppressed by wearing a helmet, which is becoming widespread. Nowadays, it does not harm either the middle ear or the inner ear. Fortunately, the slap only hit the cheek !īlast of the ear and practice of modern sports A few years ago, a politician had his moment of glory by slapping a kid who was picking his pocket. The sound of the slap can damage the auditory cells of the inner ear and often trigger tinnitus, sometimes definitive. The air in the canal is suddenly compressed, which will have repercussions on the middle ear and will cause variable damage depending on the intensity and the closed position of the hand on the pinna. The slap can produce typical blast lesions. It is classically the lesion by slap on the auricle! A very clumsy gesture, often unintentional on the ear. The very strong and very brief intensity of the sound of the explosion will cause a traumatic lesion of the cochlea with destruction, often irreversible, of the high frequencies (40Hz most often) but sometimes much more (important deafness and tinnitus) !įortunately, most of the time, the blast does not have this intensity but it happens that the ENT specialist meets a typical blast during his activity. As for the hearing loss, it can be total (tearing of the cochlea) and remains definitive. The pain in this case is intense, the dizziness such that the person is often totally unbalanced, unable to stand and the recovery is very long (several weeks) by compensation by the cerebellum (the vestibule being definitively destroyed). > Damage to the inner ear : exceptional and can lead to the tearing off of the cochlea (organ of hearing, see our article on “The ear”) with intense dizziness and irrecoverable deafness. The result is a very sharp pain in the ear associated with a more or less severe loss of hearing, tinnitus is frequent, otorrhagia is possible (blood flowing out of the canal), and even vertiginous sensations can be associated with these symptoms. > Lesions of the middle ear with tearing of the eardrum, ossicular lesions (fracture or dislocation of ossicles), hemorrhage in the middle ear box, by the brutal pressure which will be exerted on the auditory canal. In the extreme cases, one is in situation of war, but the time in which we live brings us unfortunately closer to these conditions and the lesions can be severe: The blast effect can be defined as the brutal displacement of the air during an explosion, which creates a shock wave more or less strong, causing damage directly proportional to the power of this shock wave.Ĭonsequences : of the pressure violence will depend on the anatomical damage of the ear. ![]() This type of injury can be found in many modern sports, such as diving and freediving, but not only. The lesions caused by a blast of the ear thus include a blast effect and a sound trauma. If, in the first case, the blast effect and the sound trauma can lead to damages on the middle and inner ear and are similar to a blast, the second case is more like a pure sound trauma with lesions on the inner ear. Or the American parachutist who was suspended for several hours from the bell tower of Sainte-Mère-Eglise and who became deaf because of the bells that were ringing near him. We all have in mind war movies where the deflagration of a bomb makes a soldier totally deaf and his ears bleed. In French, it is the set of organic lesions caused by the shock wave of an explosion (blast effect and sound deflagration). Ear blast and diver’s ear : common points? ĭerived from the English word for explosion. ![]()
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