Publication: Audiological Outcome of Endoscopic Stapedotomy in Nepalese population
Date
2024
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Kathmandu University
Abstract
ABSTRACT
Background
Otosclerosis is a complex disease of otic capsule that mainly affects the stapes
footplate causing conductive hearing loss, sometimes mixed hearing loss. Microscope
stapes surgery was used traditionally but endoscopic stapedectomy has ushered a
new revelation.
Objective
To report the audiological outcome of solely endoscopic trans canal stapedotomy
surgery for otosclerosis in Nepalese population.
Method
This retrospective case series study analysed pre and post operative pure tone
average of air conduction (AC) and bone conduction (BC) threshold and air bone gap
(ABG) at 0.5, 1, 2 and 4 kHz. Postoperative ABG ≤ 10 dBHL (decibels hearing level) and
ABG ≤ 20 dBHL was used to consider surgical success and improvement respectively.
Paired t-test was used to test the significance of the audiological outcome of the
study group pre and post operatively.
Result
The study included 9 patients, 10 operated ears with male to female ratio of 1:2.
Mean age was 37.60 ± 9.28 years and mean postoperative air bone gap was 19.00
(± 5.89) and gain in air bone gap 18.75 (± 8.70) which was found to be statistically
significant (p < 0.000). Audiological outcome in each of the four frequencies, 500 Hz,
1000 Hz, 2000 Hz and 4000 Hz was also found to be statistically significant.
Conclusion
This limited series study concludes that because of its favourable audiological gain
and closure of the air bone gap postoperatively and better intraoperative view, it can
uplift other surgeons to choose this as preferred technique.
KEY WORDS
Audiological outcome, Endoscopic stapedotomy, Otosclerosis, Stapes surgery
Description
Subba Rai S, Shrestha BL, Pradhan A
Department of ENT-HNS
Dhulikhel Hospital, Kathmandu University Hospital
Kathmandu University School of Medical Sciences
Dhulikhel, Kavre, Nepal
Keywords
Audiological outcome, Endoscopic stapedotomy, Otosclerosis, Stapes surgery