Publication: Hearing results after myringoplasty
Date
2006
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Kathmandu university
Abstract
Background: Myringoplasty is one of the various surgical techniques for the management of chronic supurative
otitis media of tubotympanic type (CSOM-TT). The presence of a perforation of tympanic membrane with
intermittent discharge and hearing loss of conductive nature are the indications of myringoplasty. It is a beneficial
procedure done for closing tympanic membrane perforation and improving hearing.
Objective: The aim of this study was to assess hearing improvement after myringoplasty within ten weeks
following surgery.
Material and methods: The study population consisted of 50 patients who were suffering from CSOM-TT.
Preoperative and postoperative examinations of the patients were conducted clinically as well as audiologically. Pre
and postoperative air-bone (A-B) gap were calculated by taking the averages of bone conduction and air conduction
at the frequencies of 500, 1000 and 2000 Hz. Myringoplasty was performed with underlay technique under local
anaesthesia by either permeatal or endaural approach. Temporal muscle fascia was used as grafting material for
reconstruction of the tympanic membrane.
Results: Preoperatively, air-bone gap of 30 db or more was observed in 39 (76%) patients whereas post operatively
A-B gap of 30 db or more was observed in only one patient. Using hearings gain exciding 15 dB as the criterion,
thirty-nine (78%) patients had their hearing gain exceeding 15 dB. Using postoperative A-B gap within 20 dB as the
criterion, 42 (84%) patients had their A-B gap within 20 dB.
Conclusion: Myringoplasty is a beneficial procedure for hearing improvement. Using the proportion of patients
with a postoperative A-B gap of 30 dB as the criterion, in this study, 98% of patients achieved their A-B gap closer
within 30 dB. Using hearing gain exceeding 15 dB as the criterion, 78% patient had their hearing gain exceeding 15
dB.
Key words: CSOM, myringoplasty
Description
Shrestha S 1, Sinha BK 2
1
Lecturer, Kathmandu Medical College Teaching Hospital, 2Professor, Dept. of ENT, TU Teaching Hospital