ABSTRACT
Verification is one of the most significant responsibilities for a rehabilitative audiologist. Historically, the definition and procedures used to determine proper device function and aided benefit has varied for audiology. Verification is an essential component in the process of fitting a bone-anchored hearing aid (Baha) for unilateral hearing loss (UHL). UHL will be preferred to the more contemporary term of single-sided deafness and defined as one ear that is unaidable and the other ear having normal hearing sensitivity (i.e., 20 dB hearing level or better from 500 to 3000 Hz). This article will investigate contemporary objective Baha verification measures available to the rehabilitative audiologist, specifically evaluating the following: How can audiologists verify the performance of the Baha? What should be verified? Where should the measurement take place? Why is it necessary to verify?
KEYWORDS
Baha - verification - bone conduction - real-ear measurement - electroacoustic analysis
REFERENCES
-
1 von Békésy G. Experiments in Hearing. New York, NY; McGraw-Hill 1960
-
2
Freeman S, Sichel J Y, Sohmer H.
Bone conduction experiments in animals—evidence for a non-osseous mechanism.
Hear Res.
2000;
146(1–2)
72-80
-
3 Publication Hub Gateway to UK National Statistics. Office for National Statistics. National statistics releases for 13 January 2010. http://Available at: www.statistics.gov.uk/hub/index.html Accessed January 13, 2010
-
4
Valente M, Abrams H, Benson D et al.
Guidelines for the audiological management of adult hearing impairment.
Audiol Today.
2006;
18(5)
1-44
-
5
Wazen J J, Spitzer J B, Ghossaini S N et al.
Transcranial contralateral cochlear stimulation in unilateral deafness.
Otolaryngol Head Neck Surg.
2003;
129(3)
248-254
-
6
Stenfelt S, Wild T, Hato N, Goode R L.
Factors contributing to bone conduction: the outer ear.
J Acoust Soc Am.
2003;
113(2)
902-913
-
7
Tonndorf J.
Bone conduction: studies in experimental animals.
Acta Otolaryngol.
1966;
61(213)
1
-
8
Franke E.
Response of the human skull to mechanical vibrations.
J Acoust Soc Am.
1956;
28
1277-1284
-
9
Kirikae I.
An experimental study on the fundamental mechanism of bone conduction.
Acta Otolaryngol Suppl.
1959;
145(145)
1-111
-
10
Yoshida M, Uemura T.
Transmission of cerebrospinal fluid pressure changes to the inner ear and its effect on cochlear microphonics.
Eur Arch Otorhinolaryngol.
1991;
248(3)
139-143
-
11
Stenfelt S, Goode R L.
Bone-conducted sound: physiological and clinical aspects.
Otol Neurotol.
2005;
26(6)
1245-1261
-
12
Tonndorf J, Jahn A F.
Velocity of propagation of bone-conducted sound in a human head.
J Acoust Soc Am.
1981;
70(5)
1294-1297
-
13
Huizing E H.
Bone conduction—the influence of the middle ear.
Acta Otolaryngol Suppl.
1960;
155(155)
1-99
-
14
Franke E, von Gierke H, Grossman F, von Wittern W.
The jaw motions relative to the skull and their influence on hearing by bone conduction.
J Acoust Soc Am.
1952;
24
142-146
-
15
Howell P, Williams M, Dix H.
Assessment of sound in the ear canal caused by movement of the jaw relative to the skull.
Scand Audiol.
1988;
17(2)
93-98
-
16
Khanna S M, Tonndorf J, Queller J E.
Mechanical parameters of hearing by bone conduction.
J Acoust Soc Am.
1976;
60(1)
139-154
-
17
Fagelson M, Martin F N.
Sound pressure in the external auditory canal during bone-conduction testing.
J Am Acad Audiol.
1994;
5(6)
379-383
-
18 Møller A R. Hearing. Its Physiology and Pathophysiology. San Diego, CA; Academic Press 2000
-
19
Queller J E, Khanna S M.
Changes in bone conduction thresholds with vibrator contact area.
J Acoust Soc Am.
1982;
71(6)
1519-1526
-
20
Bárány E.
A contribution to the physiology of bone conduction.
Acta Otolaryngol.
1938;
26(Suppl)
1-223
-
21 Carhart R. Effect of stapes fixation on bone conduction response. In: Schuknecht H Otosclerosis. Boston, MA; Little, Brown and Company 1962: 175-197
-
22 Walsh T. Fenestration: results, indications, limitations. In: Schuknecht H Otosclerosis. Boston, MA; Little, Brown and Company 1962: 245-250
-
23 Giolas T. Aural rehabilitation of adults with hearing impairment. In: Katz J Handbook of Clinical Audiology, 4th ed. Baltimore, MD; Williams and Wilkins 1994: 776-792
-
24
Chiossoine-Kerdel J A, Baguley D M, Stoddart R L, Moffat D A.
An investigation of the audiologic handicap associated with unilateral sudden sensorineural hearing loss.
Am J Otol.
2000;
21(5)
645-651
-
25
Newman C W, Weinstein B E, Jacobson G P, Hug G A.
Test-retest reliability of the hearing handicap inventory for adults.
Ear Hear.
1991;
12(5)
355-357
-
26
Newman C W, Jacobson G P, Hug G A, Sandridge S A.
Perceived hearing handicap of patients with unilateral or mild hearing loss.
Ann Otol Rhinol Laryngol.
1997;
106(3)
210-214
-
27
Niparko J K, Cox K M, Lustig L R.
Comparison of the bone anchored hearing aid implantable hearing device with contralateral routing of offside signal amplification in the rehabilitation of unilateral deafness.
Otol Neurotol.
2003;
24(1)
73-78
-
28
Mylanus E A, van der Pouw K C, Snik A F, Cremers C W.
Intraindividual comparison of the bone-anchored hearing aid and air-conduction hearing aids.
Arch Otolaryngol Head Neck Surg.
1998;
124(3)
271-276
-
29
Baguley D M, Bird J, Humphriss R L, Prevost A T.
The evidence base for the application of contralateral bone anchored hearing aids in acquired unilateral sensorineural hearing loss in adults.
Clin Otolaryngol.
2006;
31(1)
6-14
-
30
Sargent E W, Herrmann B, Hollenbeak C S, Bankaitis A E.
The minimum speech test battery in profound unilateral hearing loss.
Otol Neurotol.
2001;
22(4)
480-486
-
31
Welsh L W, Welsh J J, Rosen L F, Dragonette J E.
Functional impairments due to unilateral deafness.
Ann Otol Rhinol Laryngol.
2004;
113(12)
987-993
-
32
Linstrom C J, Silverman C A, Yu G P.
Efficacy of the bone-anchored hearing aid for single-sided deafness.
Laryngoscope.
2009;
119(4)
713-720
-
33 Dillion H. Prescribing hearing aid performance. In: Dillion H Hearing Aids, 1st ed. New York, NY; Thieme 2000: 234-280
-
34
Carhart R.
Selection of hearing aids.
Arch Otolaryngol.
1965;
44
1-18
-
35
Dirks D D, Kincaid G E.
Basic acoustic considerations of ear canal probe measurements.
Ear Hear.
1987;
8(5, Suppl)
60S-67S
-
36
Hawkins D B.
Clinical ear canal probe tube measurements.
Ear Hear.
1987;
8 (Suppl)
74-81
-
37
Hawkins D B, Mueller H G.
Some variables affecting the accuracy of probe tube microphone measurements.
Hear Instrum.
1986;
37
8-12
William W DickinsonAu.D.
Assistant Professor, Department of Hearing and Speech Sciences, Vanderbilt University Medical School
Vanderbilt Bill Wilkerson Center, 1215 21st Avenue South, Suite 9302, Nashville, TN 37232
Email: william.w.dickinson@vanderbilt.edu
