Audiometric Parameters in Conductive Hearing Loss and Middle Ear Disease

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Abstract

We study audiometric parameters including Transient Otoacoustic emissions, pure-tone audiometry for air- and bone-conduction, and spondaic speech recognition thresholds for air- and bone conduction in a pre- and postoperative situation in patients due for surgery for tympanic membrane perforations and otosclerosis. The hypotheses are that the precision of the preoperative assessment may be increased, and our knowledge about the effect on the inner ear by middle ear surgery may be increased.

Description

Consecutive patients 12 years or older due for myringoplasty or stapes surgery at the ENT-department, University hospital of Tromsø, in an approximate time span of one year, have been studied with the following audiometric investigations at the preoperative admission, 2, 6 and 12 months postoperatively: Transient otoacoustic emissions, pure-tone audiometry for air- and bone-conduction, speech audiometry using spondaic recognition for air and bone-conduction. Results will be statistically analysed using the Statistical Package for the Social Sciences, with the unoperated ear (paired organ) serving as controls. The goal is to look at alternative methods for analysing the patients' preoperative hearing in order to increase the precision of clinical decision-making. The secondary goal is to elucidate the effects of middle ear surgery on the inner ear.

Dates

Last Verified:	05/31/2012
First Submitted:	09/12/2005
Estimated Enrollment Submitted:	09/12/2005
First Posted:	09/21/2005
Last Update Submitted:	06/19/2012
Last Update Posted:	06/20/2012
Actual Study Start Date:	08/31/2002
Estimated Study Completion Date:	11/30/2014

Condition or disease

Otosclerosis

Tympanic Membrane Perforation

Intervention/treatment

Procedure: Myringoplasty

Procedure: Otosclerosis

Phase

Arm Groups

Arm	Intervention/treatment
Myringoplasty Patients subject to myringoplasty for tympanic membrane perforations.	Procedure: Myringoplasty Myringoplasty is an operative procedure to close tympanic membrane perforations.
Otosclerosis Patients subject to stapes surgery	Procedure: Otosclerosis Operative procedure aimed to replace non-functioning stapes with a synthetic prosthesis

Eligibility Criteria

Ages Eligible for Study	12 Years To 12 Years
Sexes Eligible for Study	All
Sampling method	Non-Probability Sample
Accepts Healthy Volunteers	Yes
Criteria	Inclusion Criteria: - Tympanic membrane perforation without chronic secretion or cholesteatoma - Suspected otosclerosis Exclusion Criteria: - Below 12 years of age - Patient not consenting to study - Perioperative findings suggesting chronic otitis or cholesteatoma - Patients not fluent in Norwegian or unable to cooperate in audiometry

Outcome

Primary Outcome Measures

1. Post-operative hearing threshold level [1 year]

Pure tone audiometry, speech audiometry, otoacoustic emissions