Behavioral Assessment of Central Auditory Processing in Turner Syndrome.

 Turner syndrome (TS) affects ∼ 1 in 2,500 live births. The presence of hearing alterations is one of the comorbidities found in this syndrome.  The present study aimed to evaluate the central auditory abilities in TS and to associate the alterations found with the cytogenetic pattern of the syndrome.

A Study on the Reference Values and Cutoff Criteria of Masking Level Difference for Children Aged 7-12 Years.

The Masking Level Difference (MLD) test is one of the main instruments for investigating binaural interaction. Studies with children aged 7-12 years still disagree about the influence of age on test performance and present discordant reference values. This study aimed to verify the effect of age on the performance of children aged 7-12 years in the MLD test and to establish reference values and cutoff criteria for this age group.

Masking Level Difference: test-retest reliability assessment in normal hearing female university students.

Purpose: To verify the test-retest reliability of the Masking Level Difference in normal hearing female university students.

Methods: Prospective descriptive study with 78 young female adults without hearing complaints, submitted to the compact disc version of the Masking Level Difference by Auditec of Saint Louis. The threshold was determined by the difference between signal-to-noise ratios at hearing thresholds found in the antiphasic and homophasic conditions.

Efferent Auditory Pathways Inhibition in Turner syndrome.

Purpose: The goal of this study is to investigate the efferent auditory pathways inhibition in Turner's syndrome and to relate it to the cytogenetic profile.

Methods: This is a cross-sectional study with a comparison group. A sample with 94 participants divided into two groups: The study group was a sample of 40 patients diagnosed with Turner's syndrome (17.

Characterization of interstimulus interaction in the multiple auditory steady-state responses at high sound levels.

Multiple auditory steady-state response (MASSR) is recommended to estimate hearing thresholds in difficult-to-test individuals. The multiple stimuli that evoke MASSR may present an interstimulus interaction (ISI) that is able to distort the generation of responses. No consensus exists on the effects of the ISI in MASSR when dealing with high sound level stimuli or cases of sensorineural hearing loss.

Association between cytogenetic alteration and the audiometric profile of individuals with Turner syndrome.

Introduction: Turner syndrome is a frequent genetic disorder that affects female individuals and covers a large phenotypic variability. Scientific literature suggests an association between hearing loss and Turner syndrome, but it remains a controversial topic.

Objective: To associate the cytogenetic alteration with the audiometric profile of individuals with Turner syndrome.

Sequential analysis as a tool for detection of amikacin ototoxicity in the treatment of multidrug-resistant tuberculosis.

Objective: To investigate early detection of amikacin-induced ototoxicity in a population treated for multidrug-resistant tuberculosis (MDR-TB), by means of three different tests: pure-tone audiometry (PTA); high-frequency audiometry (HFA); and distortion-product otoacoustic emission (DPOAE) testing.

Methods: This was a longitudinal prospective cohort study involving patients aged 18-69 years with a diagnosis of MDR-TB who had to receive amikacin for six months as part of their antituberculosis drug regimen for the first time. Hearing was assessed before treatment initiation and at two and six months after treatment initiation.

The importance of audiometric monitoring in patients with multidrug-resistant tuberculosis.

Introduction: A total of 771 cases of multidrug-resistant tuberculosis (MDR-TB) were reported in Brazil in 2014. Treatment of MDR-TB with aminoglycosides can produce serious side effects such as permanent and irreversible hearing loss, which occurs in 5-64% of cases, and severely compromise patient quality of life. The goal of this research was to evaluate auditory and vestibular side effects in patients treated for MDR-TB and to identify associations between these complaints and the type of aminoglycoside used.

Cochlear function in students exposed to pesticides.

Purpose: To estimate the degree of association between exposure to pesticides and the risk of alteration in cochlear function in students exposed to pesticides.

Methods: This study evaluated individuals aged 8 to 30, of both genders, residing in an area of heavy pesticide use in the town of Nova Friburgo, Rio de Janeiro State. Each study participant answered a questionnaire to assess their degree of pesticide exposure.

Assessment of frequency specific auditory steady-state response using amplitude modulation with 2-order exponential envelope.

This study investigated the performance of Frequency Specific Auditory Steady-State Response (FS-ASSR) detection elicited by the amplitude modulated tone with 2-order exponential envelope (AM2), using objective response detection (ORD) techniques of Spectral F-Test (SFT) and Magnitude Squared Coherence (MSC). ASSRs from 24 normal hearing adults were obtained during binaural multi-tone stimulation of amplitude-modulation (AM) and AM2 at intensities of 60, 45 and 30 dBSPL. The carrier frequencies were 500, 1000, 2000, and 4000 Hz, modulated between 77 and 105 Hz.

Assessment of otoacoustic emission suppression in women with migraine and phonophobia.

Given that the medial olivocochlear efferent system reduces the amplitude of otoacoustic emissions (OAE), the aim of this study was to establish whether such a pathway is affected in women with migraine and phonophobia by means of OAE suppression testing. In this prospective case-control study, 55 women (29 with migraine and phonophobia and 26 healthy women) were subjected to transient-evoked otoacoustic emission (TEOAE) testing at frequencies from 1 to 4 kHz. The amplitudes of the TEOAE response before and after exposure to contralateral noise and the magnitude of TEOAE suppression were assessed.

Temporal auditory processing in rural workers exposed to pesticide.

Purpose: The objective of this research was to assess the ordering and temporal resolution auditory abilities in rural workers exposed to pesticides and compare them with laborers exposure index.

Methods: A sectional study assessed 33 individuals of both genders, aged 18-59 years, who were exposed to pesticides during their daily routine. The procedures were: questionnaire, meatoscopy, basic audiological evaluation and Temporal Auditory Processing tests: pattern test duration and Gaps-in-Noise.

Audiometric evaluation of patients treated for pulmonary tuberculosis.

Objective: To evaluate the hearing status of patients being treated for pulmonary tuberculosis at referral hospitals in Brazil.

Methods: This was a descriptive study involving 97 male and female inpatients/outpatients between 18 and 60 years of age who were undergoing treatment for active pulmonary tuberculosis at one of two referral hospitals in the state of Rio de Janeiro. After being interviewed, all of the patients underwent pure tone audiometry.

[Auditory temporal processing assessment in rural workers exposed to organophosphate pesticides].

Purpose: To evaluate the auditory temporal processing in workers occupationally exposed to organophosphate pesticides.

Methods: Cross-sectional study in which 43 rural workers of both genders with bilaterally normal auditory thresholds that were occupationally exposed to organophosphates were assessed. The procedures included the following items: questionnaire regarding personal and professional background, period of exposition to organophosphates, otoscopy, pure-tone audiometry.

High-frequency audiometry in normal hearing military firemen exposed to noise.

Unlabelled: The study of high frequencies has proven its importance for detecting inner ear damage. In some cases, conventional frequencies are not sensitive enough to pick up early changes to the inner ear.

Aim: To analyze the results of threshold high frequency analysis of individuals exposed to noise with normal conventional audiometry.

Comparative study of audiometrics tests on metallurgical workers exposed to noise only as well as noise associated to the handling of chemical products.

Unlabelled: Exposure to ototoxic chemical products in the presence or absence of noise can cause irreversible injury to the hearing of workers for a significantly short period of exposure period.

Aim: to perform a comparative study, through audiometric tests, in workers exposed to noise only and noise associated with chemical products.

Materials And Methods: 155 steel workers (18 - 50 years) exposed to noise (group I), and exposed to noise and chemical products (group II) for a period that varies from 3 to 20 years.

The efficiency of otoacoustic emissions and pure-tone audiometry in the detection of temporary auditory changes after exposure to high sound pressure levels.

Unlabelled: Exposure to noise has a harmful effect on the auditory health of workers.

Aim: The main goal of this paper was to establish the role of pure-tone audiometry and evoked transient otoacoustic emissions in the detection of small temporary auditory changes after exposure to high sound pressure levels.

Study Design: A cross-sectional cohort study.

Analisys of high frequency auditory thresholds in individuals aged between 18 and 29 years with no otological complaints.

Unlabelled: Recent studies analyzing audibility thresholds at frequencies over 8 KHz have brought new perspectives on the investigation of auditory damage. These studies, however, have not yet reached a consensus on normal standards for auditory thresholds at these frequencies.

Aim: To analyze the results of high frequency auditory thresholds in individuals aged between 18 and 29 years with no otological complaints.