What should children with large vestibular aqueduct pay attention to when fitting hearing aids?
< img SRC = "http://sky.hearingaid.cc/data/images/2019-10-21/7f08a8bfd6121dfeb0456889e574fcb2. JPG" ALT = "greater vestibular aqueduct syndrome" > < img SRC = "http://sky.hearingaid.cc/data/images/2019-10-21/0951d5445c862e71b268a461c4e99c4f. JPG" ALT = "greater vestibular aqueduct syndrome" >
Definition: fluctuating hearing loss with vestibular dysfunction due to simple vestibular aqueduct enlargement.
Cause: enlargement of vestibular aqueduct from any cause
Incidence: 1.5% of sensorineural deafness in adolescents and children
Pathogenesis: the development of vestibular aqueduct is blocked from the late stage of embryo development to 4 years after birth, resulting in the enlargement of pipe diameter (greater than or equal to 1.5mm). At this time, the intracranial pressure is increased for any reason, and the pressure is retrograde transferred to the inner ear, resulting in (1) pressure imbalance in all parts of the inner ear (2) membranous labyrinth injury. It eventually leads to hearing loss.
Clinical manifestations and treatment:
– onset in infancy
– progressive hearing loss
– sudden onset of fluctuating hearing loss
– concomitant vertigo
– occasional nausea and vomiting
Treatment
– at the first attack, strong dehydrating agent and hormone treatment can be given.
– after repeated attacks, vasodilators and neurotrophic drugs can be given at the same time.
– internal lymphatic sac decompression and shunt.
– hearing aid or cochlear implant.
Selection of hearing aids
– choose a super power hearing aid.
– avoid head injury and do not take part in strenuous physical activities.
– try to prevent and treat colds. Don’t blow your nose or cough hard.
– pay attention to the children’s hearing changes, find out the hearing fluctuations in time, and treat them in time.
– during the treatment, do not adjust the hearing aid temporarily, and adjust it after the hearing is stable.
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Link：How to choose hearing aids in the large vestibular aqueduct syndrome
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