Myringoplasty. A conventional and extended high-frequency, air- and bone-conduction audiometric study.
Comparison of the pre- and postoperative air- and bone-conduction thresholds in 22 subjects in whom successful myringoplasty was performed has been made in the conventional and extended high-frequency ranges. Air-conduction thresholds improved through 4 kHz, but were elevated postoperatively for the frequencies 6 through 18 kHz. Postoperative bone-conduction thresholds were elevated at 0.25 and 0.5 kHz, were lower by 2-8 dB for 1 through 3 kHz and not significantly altered in the extended high-frequency range of 8 through 16 kHz. The extended high-frequency air-conduction threshold loss following myringoplasty in this study is, therefore, due to changes in middle ear transmission and is not indicative of iatrogenic cochlear damage.
Mair
I W
IW
Department of Otorhinolaryngology, Ullevål University Hospital, Oslo, Norway.
Hallmo
P
P
D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001299:Audiometry; D001309:Auditory Threshold; D001844:Bone Conduction / Q000502:physiology*; D002648:Child; D004432:Ear, Middle / Q000601:surgery*; D005260:Female; D006309:Hearing; D006801:Humans; D008297:Male; D009225:Myringoplasty / Q000009:adverse effects; D018058:Tympanic Membrane Perforation / Q000601:surgery*