| Effect of static force on bone conduction hearing thresholds and comfort. | |
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MedLine Citation:
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PMID: 21506894 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Abstract Objective: To assess the effect of the static force of a bone vibrator on the results of bone conduction (BC) threshold measurements and comfort. Design: BC thresholds were determined for 40 participants using the standardized P-3333 headband and a leather adjustable headstrap with variable static forces (2.4, 3.4, 4.4, 5.4 N). Comfort ratings were examined using a five-point Likert scale. Results: Mean BC thresholds were within ± 2 dB across all conditions; differences may be considered small enough to be clinically insignificant. Participants experienced significantly greater discomfort with the P-3333 versus the adjustable headstrap. The mean static force of the P-3333 varied considerably and was higher in situ than the calibration standard of 5.4 N. Conclusions: The results suggest that future revisions of relevant international and national standards should address the use of an adjustable headstrap and a static force less than 5.4 N. Sumario Objetivo: Evaluar el efecto de la fuerza estática de un vibrador óseo en los resultados de las mediciones de los umbrales por conducción ósea (BC) y sobre la comodidad. Diseño: Se determinaron los umbrales BC en 40 participantes utilizando la diadema estandarizada P-3333 y una banda cefálica ajustable con fuerzas estáticas variables (2.4, 3.4, 4.4, 5.4 N). La calificación de la comodidad se examinó con una escala Likert de cinco puntos. Resultados: Los umbrales promedio estuvieron en los ± 2dB a través de todas las condiciones; las diferencias pueden ser consideradas lo suficientemente pequeñas para ser clínicamente insignificantes. Los participantes experimentaron una molestia mucho mayor con la P-3333 que con la banda cefálica ajustable. La fuerza estática de la P-3333 varió considerablemente y fue mayor in situ que en el estándar de calibración de 5.4 N. Conclusiones: Los resultados sugieren que las revisiones de los estándares internacionales y nacionales deben dirigir la atención al uso de las bandas cefálicas ajustables y una fuerza estática menor que 5.4 N. |
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Authors:
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Laura E Toll; Diana C Emanuel; Tomasz Letowski |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-21 |
Journal Detail:
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Title: International journal of audiology Volume: - ISSN: 1708-8186 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-21 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101140017 Medline TA: Int J Audiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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*Chesapeake Ear Nose & Throat, P.A., Owings Mills, Maryland, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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