Dynamic characteristics of the middle ear after stapes surgery: a distortion product otoacoustic emission study

• Published in: The Egyptian journal of otolaryngology Vol. 33; no. 1; pp. 1 - 4
• Main Authors: Riad, Hani A., El-Rahman, Hesham Abd, Abdel Latif, Salwa M., Fawzy, Ahmed A. M., El-Anwar, Mohammad W.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-01-2017; Wolters Kluwer India Pvt. Ltd; Medknow Publications and Media Pvt. Ltd; Springer Nature B.V; SpringerOpen
• Subjects: Care and treatment; Development and progression; distortion product otoacoustic emission; Medicine & Public Health; Middle ear; Original Article; Otosclerosis; Patient outcomes; Physiological aspects; pure-tone audiometry; Stapedectomy; stapedotomy; Surgery; otosclerosis; pure-tone audiometry; stapedotomy; distortion product otoacoustic emission
• ISSN: 1012-5574; 2090-8539
• DOI: 10.4103/1012-5574.199397

Background
Otosclerosis is a primary localized disease of the bony otic capsule that is mainly localized to the stapedial footplate. Stapedotomy is the treatment of choice. The effect of stapes surgery on otoacoustic emissions is not sufficiently known.
Objectives
The aim of the present study was to assess changes in the middle ear dynamic characteristics, and to evaluate distortion product otoacoustic emissions (DPOAEs) in otosclerosis. Moreover, the study aimed to evaluate DPOAEs before and after stapes surgery.
Patients and methods
A total of 20 patients with otosclerosis and undergoing stapedotomy surgery were included in the study. Assessment was performed preoperatively, 1 week, 1 month, and 6 months postoperatively by using pure-tone average, tympanometry, and DPOAE.
Results
Significant improvement in the air–bone gap by pure-tone average was reported at 1 week and 1 month postoperatively, whereas 6 months postoperative hearing threshold remained the same as that of 1 month postoperative. The difference between preoperative and postoperative detection of DPOAE was not significant.
Conclusion
Conventional pure-tone audiometry remains the choice for evaluation of stapes surgery in patients of otosclerosis. The use of DPOAEs in the evaluation of a successful stapes surgery requires further studies including a larger number of patients.