Displaying publications 1 - 20 of 45 in total

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  1. Rasidi WNA, Seluakumaran K, Jamaluddin SA
    Eur Arch Otorhinolaryngol, 2023 Oct;280(10):4391-4400.
    PMID: 36988687 DOI: 10.1007/s00405-023-07929-7
    PURPOSE: Pure-tone audiometry (PTA) is the gold standard for screening and diagnosis of hearing loss but is not always accessible. This study evaluated a simplified cochlear frequency selectivity (FS) measure as an alternative option to screen for early frequency-specific sensorineural hearing loss (SNHL).

    METHODS: FS measures at 1 and 4 kHz center frequencies were obtained using a custom-made software in normal-hearing (NH), slight SNHL and mild-to-moderate SNHL subjects. For comparison, subjects were also assessed with the Malay Digit Triplet Test (DTT) and the shortened Malay Speech, Spatial and Qualities of Hearing Scale (SSQ) questionnaire.

    RESULTS: Compared to DTT and SSQ, the FS measure at 4 kHz was able to distinguish NH from slight and mild-to-moderate SNHL subjects, and was strongly correlated with their thresholds in quiet determined separately in 1-dB step sizes at the similar test frequency. Further analysis with receiver operating characteristic (ROC) curves indicated area under the curve (AUC) of 0.77 and 0.83 for the FS measure at 4 kHz when PTA thresholds of NH subjects were taken as ≤ 15 dB HL and ≤ 20 dB HL, respectively. At the optimal FS cut-off point for 4 kHz, the FS measure had 77.8% sensitivity and 86.7% specificity to detect 20 dB HL hearing loss.

    CONCLUSION: FS measure was superior to DTT and SSQ questionnaire in detecting early frequency-specific threshold shifts in SNHL subjects, particularly at 4 kHz. This method could be used for screening subjects at risk of noise-induced hearing loss.

    Matched MeSH terms: Audiometry, Pure-Tone/methods
  2. Akmaliza Ali, Ellin Fariza Selamat
    MyJurnal
    Kajian terdahulu mendapati Respons Auditori Keadaan Mantap (ASSR) mempunyai variasi yang besar dalam meramal ambang pendengaran, manakala kebolehulangan ASSR masih kurang dilaporkan. Kajian ini bertujuan untuk menentukan kebolehulangan ASSR dalam menilai ambang pendengaran golongan dewasa lanjut umur yang bermasalah pendengaran sensorineural. Seramai 15 orang subjek berumur antara 55 hingga 75 tahun terlibat dalam kajian ini. Ambang pendengaran ditentukan menggunakan audiometri nada tulen (PTA) dan ASSR pada frekuensi 0.5, 1, 2 dan 4 kHz, di mana ASSR diulang pada 0.5 dan 1 kHz. Secara keseluruhannya, nilai ambang ASSR adalah lebih tinggi daripada PTA. ANOVA satu hala menunjukkan perbezaan antara ambang PTA dan ASSR adalah tidak signifikan pada semua frekuensi. Terdapat korelasi yang signifikan antara ambang PTA dan ambang ASSR pada 0.5 kHz (r = 0.77, p < 0.05), 1 kHz (r = 0.45, p < 0.05), 2 kHz (r = 0.58, p < 0.05) dan 4 kHz (r = 0.73, p < 0.05). Ujian t berpasangan menunjukkan tiada perbezaan signifikan antara ujian ASSR pertama dan ASSR ulangan pada frekuensi 0.5 kHz (t = 2.09, p > 0.05) dan 1 kHz (t = 0.436, p > 0.05). Korelasi Pearson menunjukkan korelasi yang sederhana di antara dua pengukuran ASSR pada 0.5 kHz (r = 0.68, p < 0.001) dan 1 kHz (r = 0.60, p < 0.001). Hasil kajian ini mendapati bahawa ambang pendengaran ASSR tidak berubah secara signifikan jika diulang uji dan ujian ASSR boleh disarankan sebagai alternatif kepada PTA dalam menentukan ambang pendengaran golongan dewasa lanjut usia bermasalah pendengaran sensorineural.
    Matched MeSH terms: Audiometry, Pure-Tone
  3. Noorhassim I, Kaga K, Nishimura K
    Am J Otolaryngol, 1996 1 1;17(1):31-5.
    PMID: 8801813
    PURPOSE: The objective of this study is to find the relationship between pure-tone audiometry results and the auditory brainstem response wave abnormalities.

    SUBJECTS AND METHODS: The pure-tone audiometry (PTA) and auditory brainstem responses (ABRs) from 22 patients (44 ears) with diagnosed noise-induced permanent hearing loss were studied. Three indices of PTA were average thresholds of 0.5 kHz/, /1 kHz, and 2 kHz (PTA1); 2 kHz and 4 kHz (PTA2); and 4 kHz (PTA3) were subdivided into 3 thresholds of hearing. Their relationships with ABR results were analysed. The patterns of PTA from various groups of ABR wave patterns were studied.

    RESULTS: In this study, the abnormal ABR wave patterns were detected in 72.7% of the ears. The ears with prolonged ABR wave latency, absent early waves, prolong interpeak wave I-V latency was 20.5%, 18.2%, and 21.1%, respectively. Normal ABRs were recorded in 27.3% of the ears despite marked thresholds elevation of the PTA at high frequencies. Other relationships between PTA results and ABR wave results were discussed.

    CONCLUSION: There were relationships between severity of noise-induced hearing loss indicated by PTA and the patterns of ABR wave abnormalities among workers with noise-induced permanent hearing loss.

    Matched MeSH terms: Audiometry, Pure-Tone*
  4. Ailin Razali, M. S. Othman, M. S. Rahman, N. F.I. Misaridin
    MyJurnal
    Recreational noise exposure has become a major threat to the hearing system, and this
    includes exposure to loud noise during group exercises such as Zumba Fitness, where loud music plays an
    important role. This study aimed to assess the noise exposure and hearing threshold profile among Zumba
    Fitness regulars in Kuantan, Malaysia. MATERIALS AND METHODS: Noise exposure and hearing profile
    threshold were measured during Zumba Fitness sessions at a fitness studio in Kuantan, Malaysia from 24th
    June 2014 to 12th August 2014. Noise exposure was measured using a noise dosimeter for one hour of Zumba
    Fitness session with a total of nine sessions run by three different instructors while sound level pressure was
    taken using a sound level meter during ambient, peak session and during cooling down. Thirty participants
    answered questionnaires and underwent pure tone diagnostic audiometry test at a local clinic for hearing
    threshold documentation. RESULTS: Some areas of the hall posed higher risks of causing noise-induced
    hearing loss especially near the amplifiers. There were periods when the hearing level exceeded 115 dBA.
    Early abnormal pattern could be observed in the hearing profiles of some of the participants to suggest
    preliminary hearing problems. CONCLUSION: Zumba Fitness regulars have a risk of developing noise-induced
    hearing loss and preventive steps should be properly addressed as NIHL is permanent and irreversible.
    Matched MeSH terms: Audiometry, Pure-Tone
  5. Ooi TC, Ishak WS, Sharif R, Shahar S, Rajab NF, Singh DKA, et al.
    Clin Interv Aging, 2021;16:2033-2046.
    PMID: 34949916 DOI: 10.2147/CIA.S340432
    Purpose: This study evaluates the prevalence of and the multidimensional risk factors associated with age-related hearing loss (ARHL) among community-dwelling older adults in Malaysia.

    Patients and Methods: A total of 253 participants aged 60 years and above participated in this cross-sectional study. The participants were subjected to pure tone audiometric assessment. The hearing threshold was calculated for the better ear and classified into pure-tone average (PTA) for the octave frequencies from 0.5 to 4 kHz and high-frequency pure-tone average (HFA) for the octave from 2 to 8kHz. Then, the risk factors associated with PTA hearing loss (HL) and HFAHL were identified by using multivariate logistic regression analysis.

    Results: The prevalence of ARHL based on PTA and HFA among the community-dwelling older adults was 75.5% and 83.0%, respectively. Following multifactorial adjustments, being older (OR: 1.239; 95% CI: 1.062-1.445), having higher waist circumference (OR: 1.158; 95% CI: 1.015-1.322), lower intake of niacin (OR: 0.909; 95% CI: 0.831-0.988) and potassium (OR: 0.998; 95% CI: 0.996-1.000), and scoring lower in RAVLT T5 (OR: 0.905; 95% CI: 0.838-0.978) were identified as the risk factors of PTAHL. Meanwhile, being older (OR: 1.117; 95% CI: 1.003-1.244), higher intake of carbohydrate (OR: 1.018; 95% CI: 1.006-1.030), lower intake of potassium (OR: 0.998; 95% CI: 0.997-0.999), and lower scores on the RAVLT T5 (OR: 0.922; 95% CI: 0.874-0.973) were associated with increased risk of having HFAHL.

    Conclusion: Increasing age, having higher waist circumference, lower intake of niacin and potassium, higher intake of carbohydrates and having lower RAVLT T5 score were associated with increased risk of ARHL. Modifying these risk factors may be beneficial in preventive and management strategies of ARHL among older persons.

    Matched MeSH terms: Audiometry, Pure-Tone
  6. Seluakumaran K, Shaharudin MN
    Int J Audiol, 2022 Oct;61(10):850-858.
    PMID: 34455907 DOI: 10.1080/14992027.2021.1969455
    OBJECTIVE: To undertake calibration and preliminary validation of a custom-designed computer-based screening audiometer connected to consumer insert phone-earmuff combination for adult pure tone audiometry.

    DESIGN: Part 1 involved electroacoustic measurement and biological calibration of a laptop-earphone pair used for the computer-based audiometry (CBA). Part 2 compared CBA thresholds obtained without a sound booth with those measured using the gold-standard clinical audiometry.

    STUDY SAMPLE: 17 young normal-hearing volunteers (Part 1) and 43 normal and hearing loss subjects (Part 2) recruited from an audiology clinic via convenience sampling.

    RESULTS: The transducer-device combination produced outputs suitable for measuring thresholds down to 0 dB HL. Threshold pairs obtained from the CBA and clinical audiometry were highly correlated (Spearman's correlation coefficient, ρ = 0.92, p pure tone averages of >25 dB HL.

    CONCLUSIONS: The use of a computer-based audiometer application with consumer insert phone-earmuff combination can offer a cost-effective solution for boothless screening audiometry.

    Matched MeSH terms: Audiometry, Pure-Tone
  7. Mukari SZS, Ishak WS, Maamor N, Wan Hashim WF
    Ann Otol Rhinol Laryngol, 2017 Oct;126(10):697-705.
    PMID: 28845678 DOI: 10.1177/0003489417727547
    OBJECTIVES: Studies in cognitive aging demonstrated inconsistent association between hearing and cognition in older adults. Furthermore, it is still unclear if hearing loss at high frequencies, which is the earliest to be affected, is associated with cognitive functioning. This study aimed to determine the association between global cognitive status and pure tone average (PTA) at 0.5, 1, and 2 kHz (PTA low) and PTA at 4 and 8 kHz (PTA high).

    METHODS: This study involved 307 adults aged 60 years and older. Participants had their hearing and cognition measured using pure tone audiometry and Mini Mental State Examination (MMSE), respectively.

    RESULTS: Pure tone average (low) accounted for significant but minimal amount of variance in measure of MMSE. Multiple regression analyses were also performed on normal and impaired hearing cohorts and cohorts with younger (60-69 years) and older (≥70 years) groups. The results revealed a significant relationship between PTA (low) and MMSE only in the younger age group. In contrast, no significant relationship was found between PTA (high) and cognition in any of the cohorts.

    CONCLUSION: Pure tone average (low) is significantly but minimally related to measure of general cognitive status. Similar relationship is not observed between high-frequency hearing and cognition. Further research using a more comprehensive cognitive test battery is needed to confirm the lack of association between high-frequency hearing and cognition.

    Matched MeSH terms: Audiometry, Pure-Tone*
  8. Kong MH, Goh BS, Hamidah A, Zarina AL
    Med J Malaysia, 2014 Feb;69(1):9-12.
    PMID: 24814621 MyJurnal
    OBJECTIVE: This study aimed to evaluate the prevalence of sensorineural hearing loss (SNHL) in β-thalassaemia patients treated with Desferrioxamine (DFO) and determine the correlation of SNHL with average daily DFO dosage, serum ferritin level and Therapeutic index (T.I).

    METHODS: This is a cross sectional descriptive study carried out for a period of 14 months and 54 patients were recruited. The recruited patients are transfusion dependant β- thalassaemia patient aged 3 years and above treated with DFO. An interview, clinical examination and hearing assessment, which included tympanogram, and Pure Tone Audiometry (PTA) or behaviour alaudiometry were performed. The data on age started on DFO, average daily DFO, duration of DFO intake, serum ferritin past 1 year and Therapeutic Index (T.I) were obtained from patients' case notes.

    RESULTS: The prevalence of SNHL was 57.4% and majority has mild hearing loss (93.6%). Fourteen patients (25.9%) have bilateral ear involvement and as many as 17 patients (31.5%) have SNHL in either ear. A total of 23 patients (42.6%) have normal hearing level. Although the prevalence of SNHL was 57.4%, only a small percentage of the patient noticed and complained of hearing loss (11.1%). There is no association between age started on DFO, average daily DFO and duration of DFO intake with normal hearing group and those patients with SNHL. Positive correlation was seen between average daily DFO with 2000 and 4000Hz on PTA in the left ear and between serum ferritin level past 1 year with 4000 and 8000Hz in the right ear and 8000Hz in the left ear. No significant correlation was seen between T.I on PTA.

    CONCLUSION: The prevalence of SNHL from hearing assessment is high in β-thalassaemia patients in this study. However, it is manifested clinically in a smaller percentage. We suggest a baseline hearing assessment should be carried on all β-thalassaemia patients prior to DFO chelation therapy.
    Matched MeSH terms: Audiometry, Pure-Tone
  9. Hu S, Anschuetz L, Huth ME, Sznitman R, Blaser D, Kompis M, et al.
    JMIR Res Protoc, 2019 Jan 09;8(1):e12270.
    PMID: 30626571 DOI: 10.2196/12270
    BACKGROUND: Electroencephalography (EEG) studies indicate possible associations between tinnitus and changes in the neural activity. However, inconsistent results require further investigation to better understand such heterogeneity and inform the interpretation of previous findings.

    OBJECTIVE: This study aims to investigate the feasibility of EEG measurements as an objective indicator for the identification of tinnitus-associated neural activities.

    METHODS: To reduce heterogeneity, participants served as their own control using residual inhibition (RI) to modulate the tinnitus perception in a within-subject EEG study design with a tinnitus group. In addition, comparison with a nontinnitus control group allowed for a between-subjects comparison. We will apply RI stimulation to generate tinnitus and nontinnitus conditions in the same subject. Furthermore, high-frequency audiometry (up to 13 kHz) and tinnitometry will be performed.

    RESULTS: This work was funded by the Infrastructure Grant of the University of Bern, Bern, Switzerland and Bernafon AG, Bern, Switzerland. Enrollment for the study described in this protocol commenced in February 2018. Data analysis is currently under way and the first results are expected to be submitted for publication in 2019.

    CONCLUSIONS: This study design helps in comparing the neural activity between conditions in the same individual, thereby addressing a notable limitation of previous EEG tinnitus studies. In addition, the high-frequency assessment will help to analyze and classify tinnitus symptoms beyond the conventional clinical standard.

    INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR1-10.2196/12270.

    Matched MeSH terms: Audiometry, Pure-Tone
  10. Zirwatu Hanani, Wan Ahmad Wan Aslynn, Marina L. Alisaputri
    MyJurnal
    Introduction: Clinical studies have shown that people suffering from tinnitus are at a high risk of developing serious psychological disturbances or serious psychological distress (Erlandsson &
    Widen, 2004 in Hiller and Goebel, 1998). Thus the purpose of this study was to determine the
    relationship between life-time noise exposure and tinnitus experience among young adults in IIUM Kuantan. Methods: A cross sectional study was used to determine whether there is any association between tinnitus experiences and life-time noise exposure among 11 young adults in IIUM Kuantan from age of 18 to 35 years old who are exposed to the noise. Hearing assessment was done using otoscopy, tympanometry and pure tone audiometry. Participants were asked to fill in a questionnaire on tinnitus experience, and were fitted with a noise dosimeter that measured their noise exposure during waking hours. Values collected from dosimeter were then converted into cumulative life-time noise exposure which refers to the equivalent noise exposure per year (Jokitulppo, Tolvenen & Bjork, 2005). Results: Average cumulative life-time noise exposure of the participants is 72.54 dBA ± 6.9459. Fifty five percent (55%) reported of sometimes having tinnitus. No correlation was found between cumulative life-time noise exposure and tinnitus experience. Conclusion: The cumulative life-time noise exposure among young adults in IIUM Kuantan was found to be lower than the level considered as hazardous. Despite reports of tinnitus experience, there was no evidence that the tinnitus was due to noise exposure.
    Matched MeSH terms: Audiometry, Pure-Tone
  11. Ibrahimzubil, A.R., Nor Hassim, I., Thaherah Nor
    MyJurnal
    Comparative cross sectional study was conducted to determine the prevalence of hearing impairment among workers in one of the airport in Malaysia and the factors associated with it. A total of 248 subjects comprising 175 from the exposed group and the remaining control group were sampled. The main tools used in this study were validated questionnaire on hearing assessment and pure tone audiometric test. Response rate was 94%. Both area and personal exposure monitoring have exceeded action level for 8 Hrs TWA in the exposed group but within normal limit in the control group. The prevalence of hearing impairment was 88% among the noise exposed group and 11% in the control group with prevalence odds ratio (POR) 3.569 (95%CI 1.210-10.53, p
    Matched MeSH terms: Audiometry, Pure-Tone
  12. Mukari SZMS, Wan Hashim WF
    Ann Otol Rhinol Laryngol, 2018 Nov;127(11):798-805.
    PMID: 30139270 DOI: 10.1177/0003489418795982
    INTRODUCTION: The aims of this study were to examine the validity of self-perceived hearing loss in detecting hearing loss and factors associated with self-perceived hearing loss and hearing-help seeking and to report hearing aid adoption among a group of community-dwelling older adults in Malaysia.

    METHODS: A total of 301 older adults (⩾60 years of age) participating in a study on aging had their hearing tested using pure-tone audiometry. Self-perceived hearing loss was assessed using a single question. Sociodemographic profile, otologic history, and general cognitive status were also obtained.

    RESULTS: A single question had low sensitivity in detecting actual hearing loss: 31.3% for 4-frequency average > 25 dBHL and 48.8% for 4-frequency average > 40 dBHL. Besides hearing level, history of otorrhea and tinnitus were factors that were associated with self-perceived hearing loss among older adults with at least mild hearing loss. Hearing-help-seeking behavior was not associated with any of the tested variables. The hearing aid adoption rate was 2.7% and 7.3% among participants with 4-frequency averages > 25 dBHL and > 40 dBHL, respectively.

    CONCLUSION: The underestimation of hearing loss in the majority of older adults in this study poses a potential barrier to hearing loss intervention.

    Matched MeSH terms: Audiometry, Pure-Tone
  13. Singh AP, Prasad U, Kumar N
    Singapore Med J, 1983 Dec;24(6):367-73.
    PMID: 6681493
    Clinical synopsis and investigations on fourteen patients with blast injuries of the ear successfully treated at the ENT Unit of the University Hospital, Kuala Lumpur, revealed few interesting observations in addition to usual findings. The most outstanding one was the absence of sensorineural deafness, although it has been claimed as one of the most constant features. Conservative management alone was found to be of significant value.
    Matched MeSH terms: Audiometry, Pure-Tone
  14. Sulaiman AH, Husain R, Seluakumaran K
    Eur Arch Otorhinolaryngol, 2014 Jun;271(6):1463-70.
    PMID: 23812554 DOI: 10.1007/s00405-013-2612-z
    Although sound exposure from personal listening devices (PLDs) could potentially lead to noise-induced hearing loss (NIHL), the actual hearing risk associated with the use of these devices is still unclear. In this study, early hearing effects related to PLD usage were evaluated in 35 young adult PLD users (listening for >1 h/day, at >50% of the maximum volume setting of their devices) and their age- and sex-matched controls using a combination of conventional and extended high-frequency audiometry as well as transient-evoked otoacoustic emission (TEOAE) and distortion product of otoacoustic emission (DPOAE) measurements. The mean listening duration of the PLD users was 2.7 ± 1.0 h/day while their estimated average listening volume was 81.3 ± 9.0 dBA (free-field corrected). Typical signs of NIHL were not detected in the audiogram of PLD users and their audiometric thresholds at most of the conventional test frequencies (0.25-8 kHz) were comparable with those obtained from controls. However, compared with the controls, mean hearing thresholds of PLD users at many of the extended high-frequencies (9-16 kHz) were significantly higher. In addition, TEOAE and DPOAE amplitudes in users were reduced compared with controls. The deterioration of extended high-frequency thresholds and the decrease in DPOAE amplitudes were more evident in the users' right ears. These results indicate the presence of an early stage of hearing damage in the PLD user group. Preventive steps should be taken as the initial hearing damage in these users could eventually progress into permanent NIHL after many years of PLD use.
    Matched MeSH terms: Audiometry, Pure-Tone
  15. Asma A, Anouk H, Luc VH, Brokx JP, Cila U, Van De Heyning P
    Int J Pediatr Otorhinolaryngol, 2010 May;74(5):474-81.
    PMID: 20189254 DOI: 10.1016/j.ijporl.2010.01.023
    To discuss the clinical approach in managing patients with large vestibular aqueduct syndrome.
    Matched MeSH terms: Audiometry, Pure-Tone
  16. Mukari SZ, Mamat WH
    Audiol. Neurootol., 2008;13(5):328-34.
    PMID: 18460868 DOI: 10.1159/000128978
    The purposes of this study were to: (1) compare medial olivocochlear system (MOCS) functioning and speech perception in noise in young and older adults and (2) to quantify the correlation between MOCS functioning and speech perception in noise. Measurements were taken in 20 young (mean 26.3 +/- 2.1 years) and 20 older adults (mean 55.2 +/- 2.8 years). Contralateral distortion product otoacoustic emission (DPOAE) suppression was measured to assess MOCS functioning. Speech perception in noise was evaluated using the Hearing in Noise Test in noise-ipsilateral, noise-front and noise-contralateral test conditions. The results revealed that the older group had a significantly lower high-frequency (3-8 kHz) contralateral DPOAE suppression, and performed more poorly in the noise-ipsilateral condition than the younger group. However, there was no correlation between contralateral DPOAE suppression and speech perception in noise. This study suggests that poor speech perception performance in noise experienced by older adults might be due to a decline in medial olivocochlear functioning, among other factors.
    Matched MeSH terms: Audiometry, Pure-Tone
  17. Subha ST, Raman R
    Ear Nose Throat J, 2006 Oct;85(10):650, 652-3.
    PMID: 17124935
    We performed a study to determine if cerumen in the ear canal causes significant hearing loss and to ascertain if there is any correlation between the amount of cerumen and the degree of hearing loss. Our study was conducted on 109 ears in 80 patients. The results indicated that impacted cerumen does cause a significant degree of conductive hearing loss. We found no significant correlation between the length of the cerumen plug and the severity of hearing loss. Nor did we find any significant correlation between the presence of impacted cerumen and variables such as age, sex, ethnicity, or affected side.
    Matched MeSH terms: Audiometry, Pure-Tone
  18. Noorhassim I, Rampal KG
    Am J Otolaryngol, 1998 8 6;19(4):240-3.
    PMID: 9692632
    PURPOSE: To determine the combined effect of smoking and age on hearing impairment.

    MATERIALS AND METHODS: Pure tone audiometry test was conducted on 263 residents of a rural village who were not exposed to noise. The pack-years of smoking were computed from the subjects' smoking history. The association between pack-years and hearing impairment was assessed. The combined effect of smoking and age on hearing impairment was determined based on prevalence rate ratio.

    RESULTS: There was a statistically significant trend in the number of pack-years of smoking and age as risk factors for hearing impairment. The prevalence rates of hearing impairment for nonsmokers aged 40 years and younger, smokers aged 40 years and younger, nonsmokers older than 40 years of age, and smokers older than 40 years of age were 6.9%, 11.9%, 29.7%, and 51.3%, respectively. The prevalence rate ratio for nonsmokers aged 40 years and younger, smokers aged 40 years and younger, nonsmokers older than 40 years of age, and smokers older than 40 years of age (nonsmokers aged 40 years and younger as a reference group) was 1, 1.7, 4.3, and 7.5, respectively. The prevalence rate ratios showed a multiplicative effect of smoking and age on hearing impairment.

    CONCLUSION: Age and smoking are risk factors for hearing impairment. It is clear that smoking and age have multiplicative adverse effects on hearing impairment.

    Matched MeSH terms: Audiometry, Pure-Tone
  19. Mukari SZMS, Yusof Y, Ishak WS, Maamor N, Chellapan K, Dzulkifli MA
    Braz J Otorhinolaryngol, 2018 12 10;86(2):149-156.
    PMID: 30558985 DOI: 10.1016/j.bjorl.2018.10.010
    INTRODUCTION: Hearing acuity, central auditory processing and cognition contribute to the speech recognition difficulty experienced by older adults. Therefore, quantifying the contribution of these factors on speech recognition problem is important in order to formulate a holistic and effective rehabilitation.

    OBJECTIVE: To examine the relative contributions of auditory functioning and cognition status to speech recognition in quiet and in noise.

    METHODS: We measured speech recognition in quiet and in composite noise using the Malay Hearing in noise test on 72 native Malay speakers (60-82 years) older adults with normal to mild hearing loss. Auditory function included pure tone audiogram, gaps-in-noise, and dichotic digit tests. Cognitive function was assessed using the Malay Montreal cognitive assessment.

    RESULTS: Linear regression analyses using backward elimination technique revealed that had the better ear four frequency average (0.5-4kHz) (4FA), high frequency average and Malay Montreal cognitive assessment attributed to speech perception in quiet (total r2=0.499). On the other hand, high frequency average, Malay Montreal cognitive assessment and dichotic digit tests contributed significantly to speech recognition in noise (total r2=0.307). Whereas the better ear high frequency average primarily measured the speech recognition in quiet, the speech recognition in noise was mainly measured by cognitive function.

    CONCLUSIONS: These findings highlight the fact that besides hearing sensitivity, cognition plays an important role in speech recognition ability among older adults, especially in noisy environments. Therefore, in addition to hearing aids, rehabilitation, which trains cognition, may have a role in improving speech recognition in noise ability of older adults.

    Matched MeSH terms: Audiometry, Pure-Tone
  20. Aziz A, Md Daud MK, Nik Othman NA, Abd Rahman N
    Otol Neurotol, 2020 09;41(8):e989-e992.
    PMID: 32472918 DOI: 10.1097/MAO.0000000000002725
    BACKGROUND: Presbycusis is an age-related sensorineural hearing loss and it may reduce quality of life. We conducted a study to establish the prevalence of high-frequency presbycusis in normal hearing individuals and to validate the role of extended high-frequency distortion product otoacoustic emission (DPOAE) in the screening.

    METHOD: A cross-sectional study was conducted among 205 normal hearing adult participants with an age range between 25 and 54 years old. Hearing analysis with extended high-frequency pure-tone audiometry (PTA) and high-frequency DPOAE was carried out for all eligible participants. High-frequency presbycusis was considered to be present when the impairment of more than 25 dB occurs at higher than 8 kHz frequencies on both ears.

    RESULTS: Prevalence of high-frequency presbycusis using extended PTA was 31.7 (95% CI: 25.3, 38.1) and using high-frequency DPOAE was 57.4 (95% CI: 50.7, 64.4). The sensitivity and specificity of high-frequency DPOAE in detecting high-frequency presbycusis were 72.3 and 49.3% respectively with positive predictive value of 39.8% and negative predictive value of 79.3%. The association between age and high-frequency presbycusis was significant based on high-frequency DPOAE (p = 0.029).

    CONCLUSIONS: The prevalence of high-frequency hearing loss is higher with increasing in age. High-frequency DPOAE may be used as a screening tool followed by confirmation using extended PTA. The early detection of presbycusis is important so that measures can be taken to prevent more severe problems developing.

    Matched MeSH terms: Audiometry, Pure-Tone
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