Blog Archives

Comparison of auditory electrophysiological responses in normal-hearing patients with and without tinnitus

Conclusion: The pathogenesis and optimum management of tinnitus are still unclear. It often occurs with primary ear disease, usually associated with hearing loss, but may occur in patients with normal hearing. Observed changes in auditory brainstem and middle latency responses indicate central auditory alterations. Tinnitus involves both peripheral and central activity, and complete audiological and neurophysiological investigation is required. Management should be based on both audiological and neurophysiological findings.

from the Journal of Laryngology and Otology

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Evoked response audiometry in scrub typhus: prospective, randomised, case–control study

Conclusion: Findings were suggestive of retrocochlear pathology in two cases with normal hearing. In other patients, high frequency hearing loss may have led to altered evoked response results. Although scrub typhus appears to cause middle ear cochlear and retrocochlear damage, the presence of such damage could not be fully confirmed by evoked response audiometry.

from the Journal of Laryngology and Otology

The effects of tympanic membrane perforation on bone conduction hearing level

Conclusions
Pure tympanic membrane perforation increases bone conduction thresholds. The exact mechanism that deteriorates the bone conduction hearing level in patients with pure dry perforated tympanic membrane needs further studies.

from Auris Nasus Larynx

High-frequency audiometry in audiological complementary diagnosis: a revision of the national literature

High-frequency audiometry (HFA) is an important audiological test for early detection of hearing losses caused by leasions in the base of the cochlear duct. In recent years, its use was facilitated because audiometers began to identify frequencies higher than 8 kHz. However, there are differences related to the equipment used, the methodologies followed, and/or to the results and their interpretation. Therefore, the aim of this study was to analyze the national scientific production regarding HFA clinical application, to better understand its current use. Articles published and indexed in LILACS, SciELO and Medline databases in the last ten years were researched, using as keyword “audiometria de alta frequência/high-frequency audiometry”. Twenty-four Brazilian scientific papers using HFA were found; most studies evaluated participants with ages ranging from 18 to 50 years; 13 studies used decibel hearing level (dBHL) to determine the thresholds; a few studies compared tonal auditory thresholds between groups to define normality; the authors reported significant differences in high frequency auditory thresholds among age ranges. HFA is used in audiological clinic for early identification of auditory alterations and in the auditory follow-up of subjects exposed to ototoxic drugs and/or otoagressive agents.

from Revista de Sociedade Brasileira de Fonoaudiologia

Sensorineural Hearing Loss in Patients with Chronic Suppurative Otitis Media

Even though there are other complications of chronic suppurative otitis media, the aspect of hearing loss is often studied. Nevertheless, the occurrence of sensorineural hearing loss in patients with this disease is still controversial. This study aim (1) to assess the association between sensorineural hearing loss and chronic suppurative otitis media, (2) to investigate some clinical factors that might affect the sensorineural component in patients with this disease. This was a retrospective analysis of the clinical records and pure tone audiograms of patients with chronic suppurative otitis media in a Nigerian Tertiary Health Institution from January 2003 to December 2008. Sixty-nine patients with a mean age of 28.93 years; standard deviation of 18.593 were studied. They had an age range of 4–73 years. The duration of otorrhea ranged from 2 months to 20 years; with a mean of 6.11 years (standard deviation of 6.393). The mean bone conduction threshold in the diseased ear was 39.07 dB (standard deviation of 12.028), and 10.26 dB (standard deviation of 2.620) in the control ear (P < 0.05). The mean bone conduction threshold differences between the diseased and control ears range from 21.69 to 34.52 dB across the frequencies 0.5, 1.0, 2.0, and 4.0 kHz. These differences tended to increase with increasing frequency and were all significant (P 0.05; r = 0.190, P > 0.05 respectively). Patients with chronic suppurative otitis media had a significant degree of sensorineural hearing loss in this study. The higher frequencies were more affected; however, the patient’s age and duration of otorrhea seem not to have any correlation with the degree of sensorineural hearing loss.

from the Indian Journal of Otolaryngology

A comparison of audiometric and objective methods in hearing screening of school children. A preliminary study

Conclusions
Screening of school children is feasible with a combination of automated audiometry and tympanometry with time requirements equal to 3 min per subject.

from the International Journal of Pediatric Otorhinolaryngology

Auditory measurements in parents of individuals with autosomal recessive hearing loss

CONCLUSION: the DPOAE were more effective, in comparison to the pure tone audiometry, to detect auditory differences between the groups. More studies of this type are necessary to confirm the observed results.

from Pró-Fono Revista de Atualização Científica

Prevalence of Noise-Induced Hearing-Threshold Shifts and Hearing Loss Among US Youths

CONCLUSIONS Increased exposure to recreational noise and minimal use of hearing protection might have lead to an increase in NITS prevalence among female youths.

from Pediatrics

Prevalence of Noise-Induced Hearing-Threshold Shifts and Hearing Loss Among US Youths

CONCLUSIONS Increased exposure to recreational noise and minimal use of hearing protection might have lead to an increase in NITS prevalence among female youths.

from Pediatrics

Acclimatization effect on new users of linear and non linear hearing aids

CONCLUSION: It was not found any influences of the period of amplification use over the benefit obtained from hearing aids. There were no differences between the results achieved by new users of linear amplification and those of new users of non linear amplification.

from Revista de Sociedade Brasileira de Fonoaudiologia

Development of the Brazilian Portuguese version of the dichotic sentence identification test (DSI)

CONCLUSION: The compact disc with the Brazilian Portuguese version of the DSI test consisted of six tracks: calibration, practice, binaural integration, directed attention to the right and to the left ears and auditory training.

from Revista de Sociedade Brasileira de Fonoaudiologia

Audiologic findings in children with phenylketonuria

CONCLUSION: Children with phenylketonuria early diagnosed and treated presented worse conductive hearing thresholds, speech reception threshold and speech recognition when compared to their normal peers, as evidenced in pure-tone and vocal audiometry.

from Revista de Sociedade Brasileira de Fonoaudiologia

Is familial adenomatous polyposis associated with sensorineural hearing loss?

The mutation causing familial adenomatous polyposis (FAP) affects the adenomatous polyposis coli (Apc) gene, which has a role in the cytoskeleton and has been shown to be important in the structure of supporting cells in the cochlea. One previous study suggested that FAP sufferers may have sensorineural hearing loss. In order to demonstrate whether this is the case we invited patients known to suffer from familial adenomatous polyposis to take part in our study. Audiograms were performed and compared to normal values for that patient’s age and gender calculated using ISO standard data. Thirteen patients were included in the study analysis. No conductive hearing losses were identified. A statistically significant greater hearing loss was identified at 500 Hz (2.8 dBHL, P = 0.03) and 1000 Hz (2.5 dBHL, P = 0.05). No audiometric difference could be identified between the patients with FAP and attenuated FAP. A power calculation demonstrated that the study was of adequate size. This study did not demonstrate a clinically significant difference in hearing loss between the FAP group and the calculated normal values.

from the International Journal of Audiology

Audiologic findings and auditory-related complaints of urban bus drivers

CONCLUSION: This study showed a need for the development of preventive actions towards hearing health, in order to promote improvements on work conditions and hearing preservation of bus drivers.

from Revista de Sociedade Brasileira de Fonoaudiologia

How private is your consultation? Acoustic and audiological measures of speech privacy in the otolaryngology clinic

The right to confidentiality is a central tenet of the doctor–patient relationship. In the United Kingdom this right to confidentiality is recognised in published GMC guidance. In USA the Healthcare Insurance Portability and Accountability Act of 1996 (HIPAA) strengthened the legal requirement to protect patient information in all forms and failure to do so now constitutes a federal offence. The aims of this study are to assess the acoustic privacy of an otolaryngology outpatient consultation room. Acoustic privacy was measured using the articulation index (AI) and Bamford-Kowal-Bench (BKB) speech discrimination tests. BKB speech tests were calibrated to normal conversational volume (50 dB SPL). Both AI and BKB were calculated in four positions around the ENT clinic: within the consultation room, outside the consulting room door, in the nearest waiting area chair and in the farthest waiting area chair. Tests were undertaken with the clinic room door closed and open to assess the effect on privacy. With the clinic room door closed, mean BKB scores in nearest and farthest waiting area chairs were 51 and 41% respectively. AI scores in the waiting area chairs were 0.03 and 0.02. With the clinic room door open, privacy was lost in both AI and BKB testing, with almost 100% of word discernable at normal talking levels. The results of this study highlight the poor level of speech privacy within a standard ENT outpatient department. AI is a poor predictor or privacy.

from the European Archives of Oto-Rhino-Laryngologyl