scholarly journals Differential Diagnosis on the Types of Hearing Loss using Short Increment Sensitivity Index(SISI) Test and Bekesy Audiometry

2009 ◽  
Vol 22 (8) ◽  
pp. 704-713
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Sensitivity Index ◽  
Békésy Audiometry

The Effect of Sensori-Neural Hearing Loss on Threshold-Duration Functions

1968 ◽  
Vol 11 (4) ◽  
pp. 842-852 ◽  
Author(s):  
H. N. Wright
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Time Constant ◽  
Present Series ◽  
Auditory Disorders ◽  
Threshold Duration

Previous findings on the threshold for tones as a function of their duration have suggested that such functions may be systematically affected by sensori-neural hearing losses of cochlear origin. The present series of investigations was designed to explore this relation further and to determine also whether the amount of hearing loss present has any effect upon the results which are obtained. Preliminary studies were also carried out on a conductively impaired listener to indicate whether hearing losses of this type affect the threshold-duration function. The results indicate that the threshold-duration function is systematically affected by sensori-neural hearing losses of cochlear origin. This effect is manifested by a progressive shortening of the time constant relating threshold to duration and is not uniquely related to the amount of hearing loss present. The results obtained from the conductively impaired listener suggested that this type of hearing loss has no effect on the threshold-duration function, thereby implying that such functions may contribute significantly to the differential diagnosis of auditory disorders.

The Effects of Sophistication on Type V Bekesy Patterns in Simulated Hearing Loss

1975 ◽  
Vol 40 (4) ◽  
pp. 508-513 ◽  
Author(s):  
Frederick N. Martin ◽  
Deborah A. Monro
Keyword(s):  
Hearing Loss ◽  
Normal Hearing ◽  
General Decrease ◽  
Continuous Tone ◽  
Type V ◽  
Békésy Audiometry ◽  
Off Time

Forty-five normal-hearing subjects were divided into three groups according to sophistication regarding Bekesy audiometry in simulated hearing loss. Both standard pulsed (200 msec on/200 msec off) and lengthened off-time (200 msec on/800 msec off) were compared with a continuous tone tracing at 1000 Hz. Data revealed a general decrease in the number of Type V patterns observed as sophistication increased.

Bekesy Audiometry in Simulated Hearing Loss

1971 ◽  
Vol 36 (4) ◽  
pp. 506-510 ◽  
Author(s):  
S. K. Kacker
Keyword(s):  
Hearing Loss ◽  
Normal Hearing ◽  
Reliable Criterion ◽  
Reliable Tool ◽  
Type V ◽  
Békésy Audiometry

Ten normal-hearing volunteers, all otolaryngologists and audiometric technicians, were asked to simulate a 50-dB hearing loss in one ear on a Grason-Stadler Bekesy audiometer, Model E 800, standardized to ISO (1964). The data were analyzed and compared with the available literature. The following conclusions were reached: (1) A test-retest discrepancy, consistently present in all the subjects with simulated hearing loss, was the most reliable criterion for detecting such loss. (2) Type-V Bekesy tracings indicated simulated hearing loss and were found in 70% of the subjects. (3) Saucer-shaped curves and increased Bekesy excursions are not reliable indicators of simulated hearing loss. (4) The Bekesy audiometer is a reliable tool in detecting simulated hearing loss.

scholarly journals Acoustic reflex measurements and the loudness function in sensorineural hearing loss

1980 ◽  
Vol 27 (1) ◽  
Author(s):  
Sheila Uliel
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Sensorineural Hearing Loss ◽  
Acoustic Impedance ◽  
Pure Tone ◽  
Sensorineural Hearing ◽  
Acoustic Reflex ◽  
Reflex Responses ◽  
Loudness Function ◽  
The Individual

The suprathreshold acoustic reflex responses of forty two ears affected by sensorineural hearing loss of cochlear origin and fifty-eight ears demonstrating normal hearing, were recorded by means of an electro-acoustic impedance meter and attached X-Y recorder. The recordings were done in ascending and descending fashion,  at successively increasing and decreasing 5dB intensity levels from 90-120-90 dB HL respectively, for the individual pure-tone frequencies of 500, 1 000, 2 000 and 4 000 Hz. The contralateral mode of measurement was employed. Analysis of  these recordings indicated that the acoustic reflex  responses could be differentiated into five  characteristic patterns of  growth, which could be depicted upon a continuum of peaked, peaked-rounded, rounded, rounded-flat,  and flat  shapes. The peaked and peaked-rounded patterns were found  to predominate at all four pure-tone frequencies  in the normal ears, while the rounded-fiat  and flat  patterns were found  to predominate only at the higher pure-tone frequencies of 2 000 and 4 000 Hz in the ears affected  by sensorineural hearing loss. This latter relationship was also able to be applied to two disorders of  the loudness functio— loudness recruitment and hyperacusis. It was concluded that the flattened  acoustic reflex  patterns at the higher pure-tone frequencies  constituted a potential diagnostic cue related to the differential  diagnosis of sensorineural hearing loss, and to disorders of  the loudness function.

scholarly journals Tomographic diagnosis and relevant aspects of otosclerosis

2013 ◽  
Vol 46 (5) ◽  
pp. 307-312 ◽  
Author(s):  
Juliana Oggioni Gaiotti ◽  
Natália Delage Gomes ◽  
Ana Maria Doffémond Costa ◽  
Caroline Laurita Batista Couto Villela ◽  
Wanderval Moreira ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Hearing Loss ◽  
Differential Diagnosis ◽  
Multidetector Computed Tomography ◽  
Surgical Planning ◽  
Otic Capsule ◽  
Metabolic Derangement ◽  
Pictorial Essay ◽  
Temporal Bone Anatomy ◽  
Endochondral Layer

A literature review and pictorial essay were developed to discuss the importance of knowing the main findings and locations of otosclerosis at multidetector computed tomography (MDCT). The authors performed a retrospective review of cases of otosclerosis diagnosed in their institution by means of high resolution multidetector computed tomography. Otosclerosis corresponds to otic capsule dysplasia characterized by metabolic derangement of its endochondral layer. Such condition constitutes a relevant cause of sensorineural hearing loss, affecting about 7% to 10% of the general population. The diagnosis is usually clinical, but imaging methods play a significant role in the anatomical detailing, differential diagnosis, surgical planning and evaluation of postoperative complications. Among such methods, the relevance of MDCT is highlighted. Radiologists should be familiar with the MDCT findings of otosclerosis, as well as with the temporal bone anatomy to assist in the appropriate clinical management of this disease.

Conductive SISI Test

1974 ◽  
Vol 83 (1) ◽  
pp. 125-127 ◽  
Author(s):  
Vincent W. Byers
Keyword(s):  
Hearing Loss ◽  
Middle Ear ◽  
Statistical Difference ◽  
Conductive Hearing Loss ◽  
Bone Conduction ◽  
Sensitivity Index ◽  
Index Test ◽  
Bone Conduction Threshold ◽  
Conductive Hearing

The conductive SISI (short increment sensitivity index) test is an indirect procedure to estimate bone-conduction thresholds for middle ear pathology patients. A series of SISI tests are run, beginning at 20 dB S.L. and increasing in 10 dB S.L. steps, until a 100% SISI score is obtained. The following equation predicts the bone-conduction threshold: [Formula: see text] The results of 25 conductive SISI tests on a conductive hearing loss group indicate that the equation approximates the measured B.C. threshold. There was no statistical difference between the predicated B.C. thresholds (12.4 dB) and measured B.C. thresholds (10.4 dB) for the group.

Facial Paralysis in Children: Differential Diagnosis

1981 ◽  
Vol 89 (5) ◽  
pp. 841-848 ◽  
Author(s):  
Mark May ◽  
Thomas J. Fria ◽  
Frank Blumenthal ◽  
Hugh Curtin
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Herpes Zoster ◽  
Facial Paralysis ◽  
Positive Family History ◽  
Pseudobulbar Palsy ◽  
Slow Progression ◽  
Facial Edema ◽  
Physical Findings ◽  
Fissured Tongue

The differential diagnosis in 170 patients between birth and 18 years of age is reviewed. There are a number of obvious physical findings and historical features that allow one to make a diagnosis rather quickly. Pain, vesicles, a red pinna, vertigo, and sensorineural hearing loss suggest herpes zoster oticus. Slow progression beyond three weeks, recurrent facial paralysis involving the same side, facial twitching, weakness, or no return of function after six months indicate a neoplasm. Bilateral simultaneous facial paralysis indicates a cause other than Bell's palsy, such as Guillain-Barré syndrome, pseudobulbar palsy, sarcoidosis, and leukemia. Recurrent facial paralysis associated with a fissured tongue, facial edema, and a positive family history should suggest Melkersson-Rosenthal syndrome.

Some Observations on Type V Bekesy Tracings

1963 ◽  
Vol 6 (4) ◽  
pp. 339-348 ◽  
Author(s):  
Laszlo Stein
Keyword(s):  
Hearing Loss ◽  
Frequency Of Occurrence ◽  
Type Ii ◽  
Additional Information ◽  
Type Iv ◽  
Apparent Relationship ◽  
Original Observation ◽  
Type V ◽  
Békésy Audiometry

Jerger and Herer (1961) were the first to report an apparent relationship between functional hearing loss and the Type V Bekesy pattern. Several recent studies have added substantial support to the original observation, although the number of subjects on whom these findings are based is still limited. The present study was undertaken to provide additional information on: (a) the frequency of occurrence of the Type V Bekesy tracing, (b) the manner and degree to which the interrupted tracing drops below the continuous tracing, and (c) the possible existence of additional signs of functionality in the Bekesy audiogram. Bekesy audiometry was undertaken with 100 veterans referred for audiologic examination. Thirty showed other evidence of functional hearing loss. Of these 30 subjects, 17 or 57% recorded Type V patterns and an additional nine recorded Bekesy patterns that could not be classified. In total, 26 of 30 or 87% of subjects with nonorganic hearing loss recorded Type V or unclassifiable Bekesy patterns. The remaining three subjects in this group recorded Type II or Type IV tracings. These findings suggest that the occurrence of either a Type V or unclassifiable Bekesy pattern should alert the audiologist to the possibility of functional hearing loss.

scholarly journals Fundamental Principles of Bone Conduction Hearing in Humans

2020 ◽  
Vol I (3) ◽  
pp. 28-32
Author(s):  
Georgios K Panagiotopoulos
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Auditory Perception ◽  
Bone Conduction ◽  
Sound Transmission ◽  
Auditory Pathway ◽  
Routine Practice ◽  
Clinical Routine ◽  
Bone Conduction Hearing ◽  
Air Conduction

Bone conduction involves sound transmission through bone oscillations of the skull or neighboring body areas, resulting in auditory perception. Its significance is not confined to differential diagnosis of hearing loss only. It represents a secondary auditory pathway supplementing air conduction process co instantaneously. Known bio-mechanical mechanisms involved in bone conduction in humans are analyzed and summarized in a most concise way including most recent updates that improve current clinical routine practice. Nevertheless, longstanding assumptions still need further research in order to establish a thorough bone and tissue conduction understanding.

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