Developmental Malformations
Aqueductal stenosis
Aug. 07, 2024
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Relationship between the degree of cochlear endolymphatic hydrops and pure-tone average
According to grading criteria of the 1997 World Health Group, the pure tone average hearing threshold was calculated as the average pure tone audiometry thresholds of binaural air conduction at 500, 1000, 2000, and 4000 Hz (PTA 500 to 4000 Hz). The degree of cochlear endolymphatic hydrops in the affected ear was significantly positively correlated with the PTA 500 to 4000 Hz value. (Source: Huang Y, Zhao P, Han Z, et al. Evaluation of the relationship between endolymphatic hydrops and hearing loss in Meniere's disease based on three-dimensional real inversion recovery sequence. Braz J Otorhinolaryngol 2023;89[5]:101314. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)