The anatomic determinants of conductive hearing loss secondary to tympanic membrane perforation.

2 , there was no evidence of a significant trend toward greater conductive hearing losses (CHL) at lower frequencies in ears with larger perforations. 3.2 Middle ear volume and conductive hearing loss The correlation of MEV to CHL was analyzed in perforated ears without evidence of cholesteatoma, while controlling for perforation size ( Fig. 3 ).

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