Department of Otolaryngology, Peking Union Medical College Hospital
Sun Chengcheng
(Resident physician)
Department of Otolaryngology, Beijing Electric Power Hospital
also calledIntermittent pulse noise damage, which is caused by the damage of impulse noise to the auditory organs.It is often accompanied by pressure waves, which often causes acute damage to the auditory organs, such as tympanic membrane congestion, bleeding or perforation, middle ear ossiclesfractureThe damage of inner ear tissue, Corti organ and hair cell, the displacement of tectum and the tear of basement membrane lead to hearing loss of different degrees, even total deafness.
Foreign name
explosive deafness
Alias
Intermittent pulse noise damage
Visiting department
Otolaryngology
Common location
organ of hearing
Common causes
Caused by the damage of impulse noise (or pressure wave) to auditory organs
Detonation hearing lossExplosive deafnessIt is caused by the damage of impulse noise (or pressure wave) to the hearing organ.High intensity impulse noise, often accompanied by pressure waves, often causes acute damage to the auditory organs, which may lead to tympanic membrane congestion, bleeding or perforation, middle ear ossiclesfractureThe damage of inner ear tissue, Corti organ and hair cell, the displacement of tectum and the tear of basement membrane lead to hearing loss of different degrees, even total deafness.The damage degree of middle ear and inner ear caused by detonation is not parallel, and is related to the peak sound pressure level, duration and repeated exposure times of pulse sound.Generally, when the peak sound pressure level is large, the middle ear is easy to be damaged.The peak sound pressure level is not large, but the duration is long, or the repeated exposure times are many, which is easy to damage the inner ear.
clinical manifestation
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Explosive hearing loss, most of which are asymmetric acute injuries, often accompanied by hearing losstinnitusEarache, dizziness and other symptoms.Those with torn eardrum may have ear canal bleeding, which is generally small and can be stopped naturally.If secondary infection occurs, it may lead totympanitis。
inspect
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1. Otoscopy
Tympanic membrane congestion, bleeding, perforation or rupture can be seen.
4. If there is an acute sound loss injury, the noise exposure should be stopped as soon as possible, and a small amount of glucocorticoid and neurotrophic drugs should be given. If there is permanent hearing loss, drug treatment should be given for 1 to 3 months.
prevention
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1. Evaluate the safety limit of impulse noise and shock wave to the operator's hearing organ.
2. Personal hearing protection The impulse noise and pressure wave generated by weapon launch or explosion cannot be controlled by engineering generally, so hearing protectors can be worn.
