• Sao Paulo Med J · Jan 2014

    Clinical Trial

    Audiometric thresholds and auditory processing in children with early malnutrition: a retrospective cohort study.

    • Patricia Aparecida Zuanetti, Maria Fernanda Laus, Adriana Ribeiro Tavares Anastasio, Sebastião de Sousa Almeida, and FukudaMarisa Tomoe HebiharaMTDepartment of Ophthalmology, Otorhinolaryngology and Head and Neck, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil..
    • Department of Ophthalmology, Otorhinolaryngology and Head and Neck, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
    • Sao Paulo Med J. 2014 Jan 1; 132 (5): 266272266-72.

    Context And ObjectiveMalnutrition is one of the causes of changes in cell metabolism. The inner ear has few energy reserves and high metabolism. The aim of this study was to analyze whether malnutrition at an early age is related to impairment of auditory processing abilities and hearing abnormalities.Design And SettingRetrospective cohort study conducted in a tertiary public hospital.Methods45 children participated, divided as follows: G1, children diagnosed with malnutrition in their first two years of life; G2, children without history of malnutrition but with learning difficulties; G3, children without history of malnutrition and without learning difficulties. Tympanometry, pure-tone audiometry and the Staggered Spondaic Word (SSW) test (auditory processing) were performed. Statistical inferences were made using the Kruskal-Wallis test (α = 5%) and the test of equality of proportions between two samples (α = 1.7%).ResultsNone of the 45 children participating in this study presented hearing deficiencies. However, at six of the eight frequencies analyzed, the children in G1 presented hearing thresholds lower than those of the other groups. In the auditory processing evaluation test, it was observed that 100% of the children in G1 presented abnormal auditory processing and that G1 and G2 had similar proportions of abnormalities (P-values: G1/G2 = 0.1; G1/G3 > 0.001; G2/G3 = 0.008).ConclusionsMalnutrition at an early age caused lowering of the hearing levels, although this impairment could not be considered to be a hearing deficiency. Every child in this group presented abnormalities in auditory processing abilities.

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