Displaying all 11 publications

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  1. Wahab NA, Rashid MF
    Singapore Med J, 2009 Nov;50(11):1077-9.
    PMID: 19960163
    INTRODUCTION: The present study aimed to obtain preliminary tympanometric data of young Malay adults and to compare the results between genders.
    METHODS: 96 undergraduate students (49 males and 47 females), aged 19-25 (mean and standard deviation 21.14 +/- 1.31) years, participated in this study. Otoscopic examination, pure tone audiometry, qualitative tympanogram and ipsilateral acoustic reflex were measured to ensure a clear ear canal, normal hearing and normal middle ear function, prior to tympanometric measurement. As a result, a total of 154 ears (80 ears from males and 74 ears from females) were selected for further statistical analyses. The tympanometric parameters measured were peak compensated static acoustic admittance (Peak Y(tm)), tympanometric width (TW) and equivalent ear canal volume (V(ea)).
    RESULTS: The results showed that the mean Peak Y(tm), V(ea) and TW for males were 0.81 mmhos, 1.48 cubic cm and 113.67 daPa, respectively. The mean Peak Y(tm), V(ea) and TW for females were 0.63 mmhos, 1.12 cubic cm and 98.04 daPa, respectively. Males were found to have significantly higher mean V(ea) and mean Peak Y(tm) than females. However no significant gender difference was observed in the mean TW.
    CONCLUSION: The current study suggests that young Malay adults may require gender-specific Peak Y(tm) and V(ea) values when implementing a quantitative approach in tympanogram interpretation.
    Matched MeSH terms: Acoustic Impedance Tests/methods*
  2. Mohd Ibrahim H, Mohamed Yusoff FH, Ahmad K, Van Dort S
    Med J Malaysia, 2015 Dec;70(6):321-5.
    PMID: 26988203 MyJurnal
    INTRODUCTION: Little is known about the treatment outcomes of children with cleft lip and/or palate (CLP) receiving surgical care for primary lip and palate closure in Malaysia.

    OBJECTIVES: This study examined the speech and hearing status of Malay-speaking children with CLP residing in Kuala Lumpur.

    METHODS: Parents whose children were between the age of 5 and 7 years were recruited via the Cleft Lip and Palate Association of Malaysia (CLAPAM) registry. Parents completed a survey and the children completed a speech and hearing assessment at the Audiology and Speech Sciences Clinic, Universiti Kebangsaan Malaysia.

    OUTCOMES: Speech measures include nasality rating, nasalance scores, articulation errors and speech intelligibility rating, while hearing measures include hearing thresholds and tympanometry results for each child.

    RESULTS: Out of 118 registered members who fulfilled the inclusion criteria, 21 agreed to participate in the study. The overall speech and hearing status of children in this sample were poor. Only four (19%) participants had normal speech intelligibility rating and normal hearing bilaterally. In terms of overall cleft management, only four (19%) participants were seen by a cleft team while seven (33%) had never had their hearing tested prior to this study.

    CONCLUSION: Participants in this sample had poor outcomes in speech and hearing and received uncoordinated and fragmented cleft care. This finding calls for further large scale research and collaborative efforts into improving and providing centralised, multidisciplinary care for children born with CLP.

    Matched MeSH terms: Acoustic Impedance Tests
  3. 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: Acoustic Impedance Tests
  4. Wali HA, Mazlan R, Kei J
    Ear Hear, 2019 2 27;40(5):1233-1241.
    PMID: 30807541 DOI: 10.1097/AUD.0000000000000707
    OBJECTIVES: Wideband absorbance (WBA) is an emerging technology to evaluate the conductive pathway (outer and middle ear) in young infants. While a wealth of research has been devoted to measuring WBA at ambient pressure, few studies have investigated the use of pressurized WBA with this population. The purpose of this study was to investigate the effect of age on WBA measured under pressurized conditions in healthy infants from 0 to 6 months of age.

    DESIGN: Forty-four full-term healthy neonates (17 males and 27 females) participated in a longitudinal study. The neonates were assessed at 1-month intervals from 0 to 6 months of age using high-frequency tympanometry, acoustic stapedial reflex, distortion product otoacoustic emissions, and pressurized WBA. The values of WBA at tympanometric peak pressure (TPP) and 0 daPa across the frequencies from 0.25 to 8 kHz were analyzed as a function of age.

    RESULTS: A linear mixed model analysis, applied to the data, revealed significantly different WBA patterns among the age groups. In general, WBA measured at TPP and 0 daPa decreased at low frequencies (<0.4 kHz) and increased at high frequencies (2 to 5and 8 kHz) with age. Specifically, WBA measured at TPP and 0 daPa in 3- to 6-month-olds was significantly different from that of 0- to 2-month-olds at low (0.25 to 0.31 kHz) and high (2 to 5 and 8 kHz) frequencies. However, there were no significant differences between WBA measured at TPP and 0 daPa for infants from 3 to 6 months of age.

    CONCLUSIONS: The present study provided clear evidence of maturation of the outer and middle ear system in healthy infants from birth to 6 months. Therefore, age-specific normative data of pressurized WBA are warranted.

    Matched MeSH terms: Acoustic Impedance Tests
  5. Elango S, Htun YN, Raza H
    Int J Pediatr Otorhinolaryngol, 1994 Jan;28(2-3):125-8.
    PMID: 8157410
    A total of 165 children from a school for the deaf in Malaysia were screened to find out the prevalence of additional conductive hearing loss. Otological examination, tympanometry and pure tone audiometry were performed in all these children. Fifty-one children (30.9%) had additional conductive hearing loss. Middle ear disorders were present in 15 children (9.09%). The deaf children seldom complain about the change in their hearing sensitivity, so there is a need for regular otological examination in deaf children to detect the additional conductive hearing loss.
    Matched MeSH terms: Acoustic Impedance Tests
  6. Wong MSL, Prepageran N
    J Laryngol Otol, 2021 Aug;135(8):691-694.
    PMID: 34342558 DOI: 10.1017/S0022215121001560
    OBJECTIVE: Eustachian tube dysfunction is a known complication following radiotherapy to the head and neck region. Unfortunately, treatment options are limited, with significant associated morbidity. Balloon Eustachian tube dilatation has been used successfully to treat Eustachian tube dysfunction; hence, this study aimed to determine the safety and efficacy of this method in treating Eustachian tube dysfunction in post-radiotherapy patients with nasopharyngeal carcinoma.

    METHOD: This interventional cohort pilot study on patients with Eustachian tube dysfunction compared those with nasopharyngeal carcinoma to patients without. Outcome assessment was based on tympanometry type and Eustachian Tube Dysfunction Questionnaire score.

    RESULTS: A total of 14 ears (12 patients) were tested. Only 14 per cent of the nasopharyngeal carcinoma cohort showed improvement, while 71 per cent of the non-nasopharyngeal carcinoma group were successfully treated. No significant adverse effect was reported in any patient during this study.

    CONCLUSION: Balloon Eustachian tube dilatation was not shown to be beneficial for post-radiotherapy Eustachian tube dysfunction in nasopharyngeal carcinoma patients in the preliminary stages of this pilot study.

    Matched MeSH terms: Acoustic Impedance Tests
  7. Tikaram A, Chew YK, Zulkiflee AB, Chong AW, Prepageran N
    MyJurnal
    Introduction: The aim of this study is to determine the prevalence of otitis media with effusion (OME) in Malaysian children between three months to twelve years of age and to identify the risk factors associated with it.
    Materials and methods: This is a cross-sectional study consists of 153 children selected by stratified random sampling method. Parents of these children were interviewed with a structured questionnaire. Clinical examination, including otoscopic examination and tympanometry was performed for each child.
    Results: The prevalence of OME was 18.3%. There was no statistical significant relationship between OME and gender, race, household size, attendance to daycare center, breast feeding, and exposure to passive smoking, allergy, and asthma.
    Conclusion: The prevalence of OME is 18.3% in Malaysian children between three months to twelve years of age. Frequency of AOM is a statistically significant factor to the development of OME later in life. The different risk factors associated with OME are still controversial.
    Matched MeSH terms: Acoustic Impedance Tests
  8. Rahmat S, O'Beirne GA
    Hear Res, 2015 Dec;330(Pt A):125-33.
    PMID: 26209881 DOI: 10.1016/j.heares.2015.07.013
    Schroeder-phase masking complexes have been used in many psychophysical experiments to examine the phase curvature of cochlear filtering at characteristic frequencies, and other aspects of cochlear nonlinearity. In a normal nonlinear cochlea, changing the "scalar factor" of the Schroeder-phase masker from -1 through 0 to +1 results in a marked difference in the measured masked thresholds, whereas this difference is reduced in ears with damaged outer hair cells. Despite the valuable information it may give, one disadvantage of the Schroeder-phase masking procedure is the length of the test - using the conventional three-alternative forced-choice technique to measure a masking function takes around 45 min for one combination of probe frequency and intensity. As an alternative, we have developed a fast method of recording these functions which uses a Békésy tracking procedure. Testing at 500 Hz in normal hearing participants, we demonstrate that our fast method: i) shows good agreement with the conventional method; ii) shows high test-retest reliability; and iii) shortens the testing time to 8 min.
    Matched MeSH terms: Acoustic Impedance Tests
  9. Saniasiaya J
    Ear Nose Throat J, 2021 Apr;100(2_suppl):152S-154S.
    PMID: 32755405 DOI: 10.1177/0145561320946902
    Matched MeSH terms: Acoustic Impedance Tests
  10. Abdullah B, Hassan S, Sidek D
    Malays J Med Sci, 2007 Jul;14(2):22-7.
    PMID: 22993488 MyJurnal
    To determine the characteristic presenting symptoms, otoscopic findings, audiological profiles and the intraoperative findings of children with chronic otitis media with effusion who required surgical intervention. A prospective cross sectional study was undertaken in the otorhinolaryngology clinic of USM Hospital (HUSM) involving 25 cases (50 ears) of children with chronic otitis media with effusion requiring surgical intervention from June 1999 to September 2001. Their ages ranged from 3 to 12 years old. The gender distribution included males at 72 % and females at 28 %. The presenting symptoms noted were hearing impairment (52%), otalgia (18%), ear block (16%) and tinnitus (14%). The otoscopic findings were fluid in the middle ear (40%), dullness (32%) and retraction of the tympanic membrane (28%). On audiometry, 24 ears had moderate deafness (48%), 16 ears had mild deafness (32%) while 4 ears had severe deafness (8%). With tympanometry, 42 ears out of the total 50 had a flat type B curve (84%) while 6 ears had type As curve (12%). During myringotomy, middle ear secretion was seen in 38 ears (76%) out of the 50 ears; 22 ears had mucoid secretion while 16 ears had serous secretion. Clinically, the commonest presenting symptom was hearing impairment (52%) while the most common otoscopic finding was fluid in the middle ear (40%). Audiologically, most patients had moderate conductive hearing loss (48%) and a type B curve (84%) on tympanometry. On myringotomy middle ear fluid was found in 76 % of the ears.
    Study site: otorhinolaryngology clinic, Hospital Universiti Sains Malaysia (HUSM), Kelantan, Malaysia
    Matched MeSH terms: Acoustic Impedance Tests
  11. Ami M, Abdullah A, Awang MA, Liyab B, Saim L
    Laryngoscope, 2008 Apr;118(4):712-7.
    PMID: 18176342 DOI: 10.1097/MLG.0b013e318161e521
    To investigate cochlear outer hair cell function based on distortion product otoacoustic emission (DPOAE) in patients with tinnitus.
    Matched MeSH terms: Acoustic Impedance Tests
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