Estimation of Measurement Uncertainty for Air Conduction Audiometry Testing by ISO 8253-1:2010

Santos, Viviane Fontes dos; Soalheiro, Marcia; Nabuco, Marco Antonio de Araujo

doi:10.1055/s-0034-1388841

Cited by 2 publications

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“…In both groups, a statistically significant difference was found in the audiometric thresholds between phases 1 and 3 for some frequencies in both conventional and high frequency audiometry. It is known that pure tone audiometry is influenced by endogenous factors such as attention and patient experience [ 49 ]; the difference observed herein was not of clinical value since only two individuals in each group showed variation in the degree of hearing loss grade between phases 1 and 3, and this variation in degree was due to the difference of less than 10dB between the measures which is considered a non-significant variation [ 50 ]. These data differ from out expectations since caffeine has been shown to improve an individual’s alertness, ability to concentrate, attention and memory and improves transmission in the central brain auditory pathways [ 51 , 52 ].…”

Section: Discussionmentioning

confidence: 98%

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

et al. 2021

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Objective To test the hypothesis that caffeine can influence tinnitus, we recruited 80 patients with chronic tinnitus and randomly allocated them into two groups (caffeine and placebo) to analyze the self-perception of tinnitus symptoms after caffeine consumption, assuming that this is an adequate sample for generalization. Methods The participants were randomized into two groups: one group was administered a 300-mg capsule of caffeine, and the other group was given a placebo capsule (cornstarch). A diet that restricted caffeine consumption for 24 hours was implemented. The participants answered questionnaires (the Tinnitus Handicap Inventory—THI, the Visual Analog Scale—VAS, the profile of mood state—POMS) and underwent examinations (tonal and high frequency audiometry, acufenometry (frequency measure; intensity measure and the minimum level of tinnitus masking), transient otoacoustic emissions—TEOAE and distortion product otoacoustic emissions—DPOAE assessments) at two timepoints: at baseline and after capsule ingestion. Results There was a significant change in mood (measured by the POMS) after caffeine consumption. The THI and VAS scores were improved at the second timepoint in both groups. The audiometry assessment showed a significant difference in some frequencies between baseline and follow-up measurements in both groups, but these differences were not clinically relevant. Similar findings were observed for the amplitude and signal-to-noise ratio in the TEOAE and DPOAE measurements. Conclusions Caffeine (300 mg) did not significantly alter the psychoacoustic measures, electroacoustic measures or the tinnitus-related degree of discomfort.

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Section: Discussionmentioning

confidence: 98%

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

et al. 2021

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How Stapes Ankylosis and Fracture Affect Middle Ear Dynamics: A Numerical Study

Lobato

Paul

Cordioli

et al. 2019

Journal of Biomechanical Engineering

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Numerical models of the human middle ear have been developed throughout the last 30 years, for different purposes. While several types of pathologies have been studied, stapedial disorders were seldomly explored. This papers aims to clarify how stapes fracture and some forms of stapes ankylosis, such as stapedial tendon (ST) ossification, augmented pyramidal eminence (PE) and bony bar presence, affect the sound transmission through the middle ear. In addition, the stapes dynamics is also analyzed by means of total displacement and first principal strain. For the purpose of the study, first, a three-dimensional finite element model of the human middle ear is detailed and validated under normal (healthy) conditions. The model is then modified to represent the stapedial disorders of interest. A measure is established for evaluating how the disorders reduce sound transmission through the middle ear. Results of the reduction of sound transmission showed that the different forms of stapes ankylosis affect primarily low frequencies, while the stapes fracture mostly affects high frequency sound transmission. According to the results, an augmented PE does not restrict stapes movement unless followed by some ossification of the ST. In addition, the question whether the fracture is in the anterior or posterior crus and the distance of the fractured part from the stapes footplate have a relevant role in the reduction of the sound transmission. Finally, the analysis of total displacement and first principal strain of the stapes helped to highlight some differences among the stapedial disorders.

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Estimation of Measurement Uncertainty for Air Conduction Audiometry Testing by ISO 8253-1:2010

Cited by 2 publications

References 0 publications

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

How Stapes Ankylosis and Fracture Affect Middle Ear Dynamics: A Numerical Study

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