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  1. Jean YQ, Mazlan R, Ahmad M, Maamor N
    Am J Audiol, 2018 Sep 12;27(3):260-271.
    PMID: 30007031 DOI: 10.1044/2018_AJA-17-0093
    Purpose: The aim of this study was to develop a substantive theory that explains parenting stress among mothers of deaf or hard-of-hearing (D/HH) children.

    Method: Fifteen hearing mothers of children with severe-to-profound sensorineural hearing loss were interviewed. Interviews were transcribed verbatim, and a grounded theory approach was used to inductively analyze parental stress in mothers of D/HH children. Theory generation was achieved through triangulation of data sources and systematic organization of data into codes. The coding process identified salient themes that were constantly cross-checked and compared across data to further develop categories, properties, and tentative hypotheses.

    Results: In general, two main themes emerged from the interviews: the contextual stressors and stress-reducing resources. The contextual stressors were labeled as distress over audiology-related needs, pressure to acquire new knowledge and skills, apprehension about the child's future, and demoralizing negative social attitudes. The stress-reducing resources that moderated parenting stress were identified to be the child's progress, mother's characteristics, professional support, and social support. The interaction between the identified stressors and adjustment process uncovered a central theme termed maternal coherence.

    Conclusion: The substantive theory suggests that mothers of D/HH children can effectively manage parenting stress and increase well-being by capitalizing on relevant stress-reducing resources to achieve maternal coherence.

  2. Dzulkarnain AAA, Abdullah SA, Ruzai MAM, Ibrahim SHMN, Anuar NFA, Rahim 'EA
    Am J Audiol, 2018 Sep 12;27(3):294-305.
    PMID: 30054628 DOI: 10.1044/2018_AJA-17-0087
    Purpose: The purpose of this study was to investigate the influence of 2 different electrode montages (ipsilateral and vertical) on the auditory brainstem response (ABR) findings elicited from narrow band (NB) level-specific (LS) CE-Chirp and tone-burst in subjects with normal hearing at several intensity levels and frequency combinations.

    Method: Quasi-experimental and repeated-measures study designs were used in this study. Twenty-six adults with normal hearing (17 females, 9 males) participated. ABRs were acquired from the study participants at 3 intensity levels (80, 60, and 40 dB nHL), 3 frequencies (500, 1000, and 2000 Hz), 2 electrode montages (ipsilateral and vertical), and 2 stimuli (NB LS CE-Chirp and tone-burst) using 2 stopping criteria (fixed averages at 4,000 sweeps and F test at multiple points = 3.1).

    Results: Wave V amplitudes were only 19%-26% larger for the vertical recordings than the ipsilateral recordings in both the ABRs obtained from the NB LS CE-Chirp and tone-burst stimuli. The mean differences in the F test at multiple points values and the residual noise levels between the ABRs obtained from the vertical and ipsilateral montages were statistically not significant. In addition, the ABR elicited from the NB LS CE-Chirp was significantly larger (up to 69%) than those from the tone-burst, except at the lower intensity level.

    Conclusion: Both the ipsilateral and vertical montages can be used to record ABR to the NB LS CE-Chirp because of the small enhancement in the wave V amplitude provided by the vertical montage.

  3. Amri NA, Quar TK, Chong FY
    Am J Audiol, 2019 Dec 16;28(4):877-894.
    PMID: 31600460 DOI: 10.1044/2019_AJA-18-0156
    Purpose This study examined the current pediatric amplification practice with an emphasis on hearing aid verification using probe microphone measurement (PMM), among audiologists in Klang Valley, Malaysia. Frequency of practice, access to PMM system, practiced protocols, barriers, and perception toward the benefits of PMM were identified through a survey. Method A questionnaire was distributed to and filled in by the audiologists who provided pediatric amplification service in Klang Valley, Malaysia. One hundred eight (N = 108) audiologists, composed of 90.3% women and 9.7% men (age range: 23-48 years), participated in the survey. Results PMM was not a clinical routine practiced by a majority of the audiologists, despite its recognition as the best clinical practice that should be incorporated into protocols for fitting hearing aids in children. Variations in practice existed warranting further steps to improve the current practice for children with hearing impairment. The lack of access to PMM equipment was 1 major barrier for the audiologists to practice real-ear verification. Practitioners' characteristics such as time constraints, low confidence, and knowledge levels were also identified as barriers that impede the uptake of the evidence-based practice. Conclusions The implementation of PMM in clinical practice remains a challenge to the audiology profession. A knowledge-transfer approach that takes into consideration the barriers and involves effective collaboration or engagement between the knowledge providers and potential stakeholders is required to promote the clinical application of evidence-based best practice.
  4. Dzulkarnain AAA, Shahrudin FA, Jamal FN, Marzuki MN, Mazlan MNS
    Am J Audiol, 2020 Dec 09;29(4):838-850.
    PMID: 32966099 DOI: 10.1044/2020_AJA-20-00049
    Purpose The purpose of this study is to investigate the influence of stimulus repetition rates on the auditory brainstem response (ABR) to Level-Specific (LS) CE-Chirp and click stimuli at multiple intensity levels in normal-hearing adults. Method A repeated-measure study design was used on 13 normal-hearing adults. ABRs were acquired from the study participants using LS CE-Chirp and click stimuli at four stimulus repetition rates (19.1, 33.3, 61.1, and 81.1 Hz) and four intensity levels (80, 60, 40, and 20 dB nHL). The ABR test was stopped at 40-nV residual noise level. Results High-stimulus repetition rates caused the ABR latencies to be longer and have reduced amplitudes in both ABR to LS CE-Chirp and click stimuli. The ABR to LS CE-Chirp Wave I, III, and V amplitudes were larger than ABR to click in almost all the stimulus repetition rates. However, there were no differences in the number of averages required to reach the stopping criterion between ABR to LS CE-Chirp and click stimulus, and between high-stimulus repetition rates and low-stimulus repetition rates. Conclusion The LS CE-Chirp at standard low-stimulus repetition rates can be used to elicit ABR for both neurodiagnostic and threshold seeking procedure.
  5. Quar TK, Rashid MFN, Rosdi MYM, Ishak WS, Chong FY
    Am J Audiol, 2023 Mar;32(1):59-69.
    PMID: 36446036 DOI: 10.1044/2022_AJA-22-00033
    OBJECTIVE: This study aimed to determine the challenges faced by individuals with hearing loss at a time when many nations were attempting to move from the COVID-19 pandemic to endemic.

    DESIGN: A cross-sectional survey was conducted on Malaysian adults with hearing loss to determine the impact of the COVID-19 crisis on hearing aid management, communication difficulties, psychosocial challenges, and access to audiological services.

    STUDY SAMPLE: One hundred forty-six individuals aged 18 years old and above with hearing loss were recruited from hearing health care centers to participate in the survey.

    RESULTS: Many of the participants (54.2%) reported significant difficulties communicating with people wearing face masks. For hearing aid management, repairing (36.3%) and fine-tuning devices (30.2%) were considered more challenging than obtaining a battery (21.3%). The COVID-19 pandemic had a serious psychosocial impact on a small portion of the individuals surveyed. Remote services were rarely offered by the audiologists, and most participants preferred in-person treatment. However, the majority perceived that creating awareness and training on telehealth was important.

    CONCLUSIONS: Effective management for people with hearing loss needs to consider the challenges faced by them, as the world prepares to live with the coronavirus. Clinical protocols should consider providing a service that is helpful for the clients as well as safe and sustainable in future pandemics.

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