National Acoustic Laboratories Library

In-situ audiometry: How close is it to conventional audiometry? (Record no. 2375)

MARC details
000 -LEADER
fixed length control field 02899naa a22002057a 4500
003 - CONTROL NUMBER IDENTIFIER
control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20150130122434.0
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fixed length control field 150130b xxu||||| |||| 00| 0 eng d
040 ## - CATALOGING SOURCE
Transcribing agency National Acoustic Laboratory
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name DURISALA, NARESH
245 ## - TITLE STATEMENT
Title In-situ audiometry: How close is it to conventional audiometry?
520 3# - SUMMARY, ETC.
Summary, etc Technology in the hearing aid industry is ever changing. One of the many features that may improve accuracy of hearing<br/>aid fi ttings and patients ’ satisfaction is the inception of in-situ audiometry, which allows the clinician to measure hearing<br/>thresholds with a hearing aid in the patient ’ s ear. Objective : The present study aimed to investigate the validity of in-situ<br/>audiometry measured with a behind-the-ear hearing aid coupled to a customized earmould relative to conventional thresholds<br/>measured using supra-aural head phones . Study design : A total of 24 ears from 15 participants with varying degrees<br/>of sensorineural hearing loss ranging from moderate to severe, were selected for the study. Pure tone hearing thresholds<br/>and real-ear-to-dial-differences were measured for both conventional and in-situ thresholds across 250 Hz to 6 kHz. Results :<br/>Slight but signifi cant mean differences ( p 0.05, paired t -test) of 3.2 and 3.4dB between conventional and in-situ thresholds<br/>at 2000 and 6000 Hz were found before adding REDD corrections with in-situ thresholds yielding better (lower)<br/>thresholds. Except at 250 Hz in dB HL, individual threshold variability between conventional and in-situ threshold<br/>measurements was within or equal to 10dB for 95% of ears before and after adding REDD corrections. Large interparticipant<br/>variation in measured ear canal SPL was noticed at 250, 500, 4000 and 6000 Hz when measured in-situ compared<br/>to headphones, which was attributed to differences in earmould vent sizes provided for different degrees of hearing<br/>loss at the low frequencies and probe placement in the high frequencies. Conclusion: Overall in-situ audiometry proved to<br/>be valid especially in individuals with symmetrical sensorineural hearing loss. Although there are statistically signifi cant<br/>differences, they are within clinically accepted standards. Furthermore, thresholds measured in ear canal SPL will be more<br/>comparable as any changes in hearing threshold levels in either of the measurements will be refl ected by an inverse change<br/>in measured ear canal SPL during REDD measurements.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element sensorineural , ,
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element , hearing loss
9 (RLIN) 720
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element hearing aid
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element real-ear-to-dial-difference
773 0# - HOST ITEM ENTRY
Relationship information 2015; Early Online: 1–7
Title Hearing, Balance and Communication,
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/101/In-situ%20audiometry%20How%20close%20is%20it%20to%20conventional%20audiometry.pdf?sequence=1&isAllowed=y">http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/101/In-situ%20audiometry%20How%20close%20is%20it%20to%20conventional%20audiometry.pdf?sequence=1&isAllowed=y</a>
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Universal Decimal Classification
Koha item type Periodical publication

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