Risk management of asymmetrical hearing impairment in an armed forces population

Caldera, Soledad; Pearson, C. R.

doi:10.1258/0022215001905751

Cited by 16 publications

(8 citation statements)

References 4 publications

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“…Caldera and Pearson analyzed 1,490 audiograms of Royal Air Force staff for audiology asymmetry. The incidence had a 141-fold variation according to the definitions they used and globally varied between 51 new cases per 100,000 patients to 7,215 cases per 100,000 patients per year [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Rule 3,000: a more reliable precursor to perceive vestibular schwannoma on MRI in screened asymmetric sensorineural hearing loss

Saliba

Bergeron

Martineau

et al. 2010

Eur Arch Otorhinolaryngol

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Nine different definitions of asymmetric sensorineural hearing loss (SNHL) have been reported in literature. The objectives of this study are to: (1) compare all these definitions of asymmetric SNHL; (2) measure the agreement between these definitions in detecting vestibular schwannoma (VS); and (3) determine the strongest association between an asymmetric SNHL definition and positive VS on magnetic resonance imaging (MRI). The study is a retrospective chart review in a tertiary care center. Cases were included if they were evaluated by an audiometric assessment and a posterior fossa MRI. Definitions of asymmetric SNHL reported in literature were applied to request for a further MRI investigation. The likelihood ratio (LR) for a positive test result (LR+) was the highest for the Rule 3,000 (2.91). On comparing all the other definitions with Rule 3,000, seven of the eight existing definitions have a kappa under the clinical usefulness threshold (Kappa < 0.6). When specification tests were applied, the Chi-square test identified Rule 3,000 with a highly significant P value (P < 0.0001). Rule 3,000, defined as asymmetric SNHL of 15 dB or more at the frequency 3,000 Hz, could serve as a universal referral guide for further MRI investigation. Results show that Rule 3,000 is more reliable to detect VS on MRI, a very simple rule that covers all the eight definitions of asymmetric SNHL reported in literature. This would help to reduce the number of negative MRI and to save time and money. If asymmetric SNHL is less than 15 dB, a biannual audiometry testing follow-up could be done.

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Section: Introductionmentioning

confidence: 99%

Rule 3,000: a more reliable precursor to perceive vestibular schwannoma on MRI in screened asymmetric sensorineural hearing loss

Saliba

Bergeron

Martineau

et al. 2010

Eur Arch Otorhinolaryngol

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“…Many authors advocate this testing paradigm at a considerable cost 1. The standard work‐up for a patient presenting with ASNHL often includes contrast enhanced magnetic resonance imaging (MRI) to exclude retrocochlear pathology such as a VS or meningioma 2, 3. In the pediatric population, computed tomography (CT) of the temporal bone is preferred to explore the possibility of anatomical variants such as an enlarged vestibular aqueduct 4, 5.…”

Section: Introductionmentioning

confidence: 99%

Cost analysis of asymmetric sensorineural hearing loss investigations

et al. 2010

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“…The prevalence of hearing impairment (Pure Tone Average > 25dB HL) was 14.7% in the right ear and 11.3% in the left ear. The criteria for making a diagnosis of unilateral, asymmetrical hearing impairment [20,21] was met in the audiograms of 10 (6.7%) of the participants. The signi cance of unilateral asymmetrical hearing impairment is that these participants might need to be further screened for other causes of asymmetrical hearing impairment apart from noise [21] and more importantly for medicolegal reasons.…”

Section: Discussionmentioning

confidence: 99%

Hearing Thresholds of Nigerian Navy Personnel Serving in Lagos Area

Aliyu¹,

Adedeji²,

Daniel³

et al. 2021

Preprint

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Introduction: Navy personnel are exposed to several risk factors that increase hearing thresholds and impair hearing. The aim of the study was to determine the prevalence of hearing impairment among Nigerian Navy personnel. Materials and Method: This was a cross sectional study of Nigerian Navy personnel working in various ships. Structured, self-administered questionnaire was used to obtain information on hearing. All the subjects had ear examination and pure tone audiometry of both ears. Results: The prevalence of hearing impairment was 22(14.7%) in the right and 17(11.3%) in the left ears. The Pure Tone Average for the right and left ear were 19.0±8.6dB and 17.4±6.7dB respectively. There was a statistically significant association between noisy work place and total hearing loss (p<.01), pure tone average in the left ear (p<.05) and frequencies of 3000 Hz (p<.05), 2000 Hz (p<.001) and 1000Hz (p<.05) in the left ear. The association between past history of ear infections and pure tone average in the left ear (p<.05) and the frequency 2000 Hz (p<.005) in the left ear were significant. The length of service years, occupational group, age, sex report of change in hearing, non-use of hearing protection and presence of tinnitus did not show significant association with pure tone averages nor on the frequencies tested. Conclusion: The significant unilateral hearing impairment on the right ear suggests the need for more research on hearing impairment in the Nigerian Navy as well as development of a comprehensive hearing conservation programme.

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Risk management of asymmetrical hearing impairment in an armed forces population

Cited by 16 publications

References 4 publications

Rule 3,000: a more reliable precursor to perceive vestibular schwannoma on MRI in screened asymmetric sensorineural hearing loss

Rule 3,000: a more reliable precursor to perceive vestibular schwannoma on MRI in screened asymmetric sensorineural hearing loss

Cost analysis of asymmetric sensorineural hearing loss investigations

Hearing Thresholds of Nigerian Navy Personnel Serving in Lagos Area

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