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  • Title: External Auditory Canal Dimensions, Age, and Cerumen Retention or Impaction in Persons With Down Syndrome.
    Author: Dy AES, Lapeña JFF.
    Journal: Ann Otol Rhinol Laryngol; 2018 Apr; 127(4):253-257. PubMed ID: 29426243.
    Abstract:
    OBJECTIVE: To investigate associations between age, external auditory canal (EAC) dimensions, and cerumen retention/impaction among persons with Down syndrome (DS). METHODS: This cross-sectional study evaluated EAC dimensions, cerumen retention/impaction, and middle ear status with pneumatoscopy after extraction in 130 persons with DS. Descriptive and inferential statistics correlated age, presence of impacted/retained cerumen, and EAC diameter. RESULTS: Of 260 ears in 67 males and 63 females with average age of 9.48 years, 72.3% (188) had EAC of ≤4 mm. Those ≤1 year were 4.97 times more likely to have cerumen problems than those >1 year (95% CI, 1.45-17.02, P = .011). The odds of having cerumen problems with an EAC diameter of ≤4 mm were 3.31 times higher than with a diameter of 5 mm (95% CI, 1.46-7.50, P = .004), and odds of having cerumen impaction were as much as 6.19 times higher (95% CI, 2.38-16.08, P < .001). Male gender and low-lying external ear were also associated with increased odds of cerumen problems. CONCLUSION: There is a high prevalence of cerumen retention/impaction in persons with DS compared to the general Philippine population and a higher prevalence rate for EAC stenosis than elsewhere. A canal diameter of 4 mm and below and age 1 year or less are associated with a significantly higher likelihood of cerumen retention/impaction.
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