Clinical otolaryngology and allied sciences
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Clin Otolaryngol Allied Sci · Jun 1995
Hearing loss in the 4-8 kHz range following tympanic membrane perforation from minor trauma.
This study looked at the incidence of sensorineural hearing loss in the 4-8 kHz range in patients with unilateral tympanic membrane perforations from minor trauma who presented to the department in the past year. Eleven patients conformed to our inclusion criteria, one was lost to follow-up. ⋯ All 11 patients had normal hearing in the contra-lateral ear (mean 13.5 dB). In this group of patients with a tympanic membrane perforation from minor trauma the conductive hearing loss was accompanied by a significant (P = 0.001) but reversible high frequency sensorineural deafness.
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Lateral neck radiographs performed to localize impacted fishbones have a low sensitivity. The differing radio-opacities of the bones of various fish species may be a reason for this. A cadaver head and neck and the rib bones of 10 species of fish were used in this study. ⋯ One bone was not seen by either observer. Visualization of fishbones is more dependent on position than their degree of radio-opacity. Routine radiography is recommended.