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Incorporating hearing screening to an otolaryngology surgical mission in the rural Dominican Republic.
International Journal of Pediatric Otorhinolaryngology 2022 September
INTRODUCTION: Hearing loss disproportionately affects low- and middle-income countries. Children with undiagnosed hearing loss may have difficulty with learning, language development, and behavior. The aim of this study was to understand the extent of hearing loss and common otologic disorders among school-age children in the rural western region of the Dominican Republic and to chronical the early stages of a limited-resource, locally-sustained hearing screening program in tandem with a bi-annual surgical mission.
METHODS: Hearing screenings were performed for 528 school-age children (1056 ears, age 5-17 years old) over 5 days in a village hospital in Peralta, DR. Testing initially included otoscopy and screening audiometry. Children who referred or could not be conditioned underwent distortion product otoacoustic emissions (OAEs), and tympanometry. Children who referred following both screening audiometry and OAEs were considered to have hearing loss. Those with normal tympanograms were considered potential hearing aid candidates.
RESULTS: Abnormal ear examination/otoscopic results were present in 43 children (8.1%) and included: microtia/atresia, impacted cerumen, ear canal foreign body, serous otitis media, otitis externa, and tympanosclerosis. 55 of 528 school-age children referred following screening audiometry and 7 were unable to condition. Of these 62 children, 56 tolerated OAEs and 20 referred following OAEs (3.8%). Fourteen children had type B or C tympanogram and 6 school-age children who were determined to have chronic otitis media with effusion (COME) underwent myringotomy and pressure equalization tube placement. Ten of 528 children (1.9%) had normal tympanometry and otoscopy, and referred following screening audiometry and OAEs suggesting the patients may be potential hearing aid candidates.
CONCLUSIONS: The prevalence of hearing loss in this cohort of children in the rural, western Dominican Republic was high at roughly 4% with roughly 2% of children being potential hearing aid candidates. Nearly 10% of children screened had an abnormal otologic examination; sometimes easily remedied by otolaryngologic intervention. With the support of local leadership, it is feasible to incorporate hearing services into otolaryngology outreach and build locally sustainable programs.
METHODS: Hearing screenings were performed for 528 school-age children (1056 ears, age 5-17 years old) over 5 days in a village hospital in Peralta, DR. Testing initially included otoscopy and screening audiometry. Children who referred or could not be conditioned underwent distortion product otoacoustic emissions (OAEs), and tympanometry. Children who referred following both screening audiometry and OAEs were considered to have hearing loss. Those with normal tympanograms were considered potential hearing aid candidates.
RESULTS: Abnormal ear examination/otoscopic results were present in 43 children (8.1%) and included: microtia/atresia, impacted cerumen, ear canal foreign body, serous otitis media, otitis externa, and tympanosclerosis. 55 of 528 school-age children referred following screening audiometry and 7 were unable to condition. Of these 62 children, 56 tolerated OAEs and 20 referred following OAEs (3.8%). Fourteen children had type B or C tympanogram and 6 school-age children who were determined to have chronic otitis media with effusion (COME) underwent myringotomy and pressure equalization tube placement. Ten of 528 children (1.9%) had normal tympanometry and otoscopy, and referred following screening audiometry and OAEs suggesting the patients may be potential hearing aid candidates.
CONCLUSIONS: The prevalence of hearing loss in this cohort of children in the rural, western Dominican Republic was high at roughly 4% with roughly 2% of children being potential hearing aid candidates. Nearly 10% of children screened had an abnormal otologic examination; sometimes easily remedied by otolaryngologic intervention. With the support of local leadership, it is feasible to incorporate hearing services into otolaryngology outreach and build locally sustainable programs.
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