Hashir Aazh

Insights from the first international conference on hyperacusis: Causes, evaluation, diagnosis and treatment

The First International Conference on Hyperacusis gathered over 100 scientists and health care professionals in London, UK. Key conclusions from the conference included: (1) Hyperacusis is characterized by reduced tolerance of sound that has perceptual, psychological and social dimensions; (2) there is a growing awareness that children as well as adults experience symptoms of hyperacusis or misophonia; (3) the exact mechanisms that give rise to hyperacusis are not clear, but the available evidence suggests that functional changes within the central nervous system are important and in particular, hyperacusis may be related to increased gain in the central auditory pathways and to increased anxiety or emotional response to sound; (4) various counseling and sound therapy approaches seem beneficial in the management of hyperacusis, but the evidence base for these remains poor.

Tinnitus and hyperacusis therapy in a UK National Health Service audiology department: Patients’ evaluations of the effectiveness of treatments

Abstract Objective: To assess patients’ judgements of the effectiveness of the tinnitus and hyperacusis therapies offered in a specialist UK National Health Service audiology department. Design: Cross-sectional service evaluation questionnaire survey. Patients were asked to rank the effectiveness of the treatment they received on a scale from 1 to 5 (1 = no effect, 5 = very effective). Study sample: The questionnaire was sent to all patients who received treatment between January and March 2014 (n = 200) and 92 questionnaires were returned. Results: The mean score was greatest for counselling (Mean = 4.7, SD = 0.6), followed by education (Mean = 4.5, SD = 0.8), cognitive behavioural therapy - CBT (Mean = 4.4, SD = 0.7), and hearing tests (Mean = 4.4, SD = 0.9). Only 6% of responders rated counselling as 3 or below. In contrast, bedside sound generators, hearing aids, and wideband noise generators were rated as 3 or below by 25%, 36%, and 47% of participants, respectively. Conclusion: The most effective components of the tinnitus and hyperacusis therapy interventions were judged by the patients to be counselling, education, and CBT.

Hearing-aid use and its determinants in the UK National Health Service: A cross-sectional study at the Royal Surrey County Hospital

Abstract Objectives: The aim of this study was to investigate the rate of and factors contributing to non-adherence to hearing-aid use in the UK National Health Service. Design: A cross-sectional postal questionnaire survey. Study sample: A questionnaire, including the International Outcome Inventory for Hearing Aids, was sent to all patients fitted with hearing aids at the Royal Surrey County Hospital between 2011 and 2012 (N = 1874). A total of 1023 questionnaires were completed and returned (response rate of 55%). Results: A total of 29% of responders did not use their hearing aids on a regular basis (i.e. used them less than four hours per day). Non-regular use was more prevalent in new (40%) than in existing patients (11%). Factors that reduced the risk of non-regular use included bilateral versus unilateral amplification, and moderate or severe hearing loss in the better ear. 16% of responders fitted with bilateral amplification used only one of their hearing aids. Conclusions: The level of non-regular use of hearing aids in NHS found in this study was comparable to those for other countries. Additional support might be needed for patients at a higher risk of non-regular use.

Factors related to uncomfortable loudness levels for patients seen in a tinnitus and hyperacusis clinic

Abstract Objectives: The aims were as follows: (1) to explore patterns of uncomfortable loudness levels (ULLs) across frequency and their associated factors for patients with tinnitus and hyperacusis, and (2) to re-evaluate the criteria for diagnosing hyperacusis based on ULLs and scores for the Hyperacusis Questionnaire (HQ). Design: This was a retrospective cross-sectional study. Study sample: 573 consecutive patients for whom ULLs had been measured were included. Results: A good correspondence between the diagnosis of hyperacusis based on the across-frequency average ULL for the ear with the lowest ULLs (ULLmin) and hyperacusis handicap based on HQ scores was obtained with cut-off values of ULLmin ≤77 dB HL and HQ score ≥ 22. A regression model showed significant relationships between ULLmin and the score on the HQ and age. The mean HQ score for patients with a large interaural asymmetry in ULLs was significantly higher than for the remainder. Hyperacusis handicap was associated with strong across-frequency variations in ULLs. Conclusions: Appropriate cut-off values for diagnosing hyperacusis are ULLmin ≤77 dB HL and HQ score ≥22. Large interaural asymmetry and large across-frequency variations in ULLs are associated with higher HQ scores.

Usefulness of self-report questionnaires for psychological assessment of patients with tinnitus and hyperacusis and patients’ views of the questionnaires

Abstract Objective: The objective was to determine the relevance and applicability of psychological questionnaires to patients seeking help for tinnitus and/or hyperacusis. Design: This was a questionnaire-based survey. The following questionnaires were administered: Generalised Anxiety Disorder (GAD-7), Short Health Anxiety Inventory (SHAI), Mini-Social Phobia Inventory (Mini-SPIN), Obsessive Compulsive Inventory-Revised (OCI-R), Panic Disorder Severity Scale-Self Report (PDSS-SR), Patient Health Questionnaire (PHQ-9) and Penn State Worry Questionnaire-Abbreviated version (PSWQ-A). In addition, a patient feedback questionnaire was completed asking about the extent to which each questionnaire was relevant to them and how strongly they would recommend its use in the assessment of patients with tinnitus and hyperacusis. Study Sample: A total of 150/402 consecutive patients seen in a one-year period completed the questionnaires. Results: 65% of patients had abnormal scores for one or more of the questionnaires. All questionnaires except the PDSS-SR were rated as relevant and recommended for use. Conclusions: The GAD-7, SHAI, Mini-SPIN, OCI-R, PSWQ-A and PHQ-9 are recommended for evaluation of psychological problems for patients seeking help for tinnitus and/or hyperacusis. Abnormal results on these questionnaires may indicate the need for referral for possible treatment of psychological problems.

Feasibility of conducting a randomized controlled trial to evaluate the effect of motivational interviewing on hearing-aid use

Abstract Objectives: The aim of this study was to evaluate the feasibility of conducting a randomized controlled trial (RCT) on the effect of motivational interviewing (MI) on hearing-aid use. Design: This was a pilot single-blind, randomized parallel-group study conducted in the UK. Study sample: Thirty-seven adult patients who reported using their hearing aid(s) less than four hours per day were randomized to MI combined with Standard Care (MISC) (n = 20), and Standard Care only (SC) (n = 17). Results: Of 220 patients invited, 37 were enrolled giving the recruitment rate of 17%. One participant withdrew giving the retention rate of 97%. It was feasible to combine MI with SC for facilitating hearing-aid use and deliver the intervention with high fidelity in an audiology setting. The measure on hearing-aid use (data logging) one month after interventions favoured the MISC group. Conclusions: This pilot study suggests that conducting an RCT on using MI for facilitating hearing-aid use in people who do not use their hearing aids is feasible, and that MI combined with SC may have more positive effects on hearing-aid use compared to SC only.

Influence of ear canal occlusion and static pressure difference on bone conduction thresholds: Implications for mechanisms of bone conduction

The effect of air pressure change on bone conduction (BC) hearing thresholds in the occluded ear was investigated. The pump manometer system of an impedance bridge was used to change the air pressure in the ear canal of twenty-two normally hearing subjects. BC thresholds were measured with: (1) open ear; (2) the ear canal occluded with a probe tube and application of 0 daPa air pressure; and (3) the ear canal occluded with a probe tube and application of −350 daPa air pressure. Thresholds were lower in condition 2 than in condition 1, the difference decreasing from 27 dB at 2500 Hz to 4.5 dB at 2000 Hz. Thresholds were higher in condition 3 than in condition 2. The results are interpreted in terms of changes in the relative contribution of the three routes of transmission for BC sound produced by occlusion and by a static pressure difference.

Audiological Rehabilitation for Facilitating Hearing Aid Use: A Review

Purpose: This article reviews and critically analyzes the design of studies on the effect of audiological rehabilitation (AR) programs on hearing aid (HA) outcomes, in order to guide future research. Research Design: The design of this study was a narrative review. Studies were included in the review if they were randomized controlled trials that investigated the effects of AR on HA use and outcome between 2000 and 2016. Results: Seven articles that met the inclusion criteria were included in the review. Most used educational rather than counseling approaches. Although educational AR programs seem to be useful in enhancing the use of communication strategies, there is limited evidence for their effect on HA use and selfperceived hearing handicap. Conclusions: More research is needed in this field. Future studies should (1) investigate the efficacy of AR interventions based on counseling and empathetic listening as opposed to or in addition to educational interventions, (2) use stricter criteria to include only a subpopulation of patients who do not get on well with their HAs, (3) measure the amount of HA use via data‐logging and self‐report questionnaires, and (4) use a matching comparison intervention for patients in the control group.

Incidence of Discomfort During Pure-Tone Audiometry and Measurement of Uncomfortable Loudness Levels Among People Seeking Help for Tinnitus and/or Hyperacusis

Purpose The aim of this study was to assess the proportion of patients seen in a tinnitus and hyperacusis therapy clinic for whom presentation levels based on the British Society of Audiology (BSA)-recommended procedures for pure-tone audiometry and determination of uncomfortable loudness levels (ULLs) exceed ULLs, leading to discomfort during administration of these procedures. Method This was a retrospective cross-sectional study of 362 consecutive patients who attended a National Health Service audiology clinic for tinnitus and/or hyperacusis rehabilitation. Results For 21% of the patients, presentation levels based on the BSA procedure for pure-tone audiometry exceeded the ULL for at least 1 of the measured frequencies (excluding the first frequency tested, 1 kHz): 0.25, 0.5, 2, 3, 4, 6, and 8 kHz. For 24% of patients, the starting presentation level of 60 dB hearing level recommended for determination of ULLs exceeded the ULL for at least 1 frequency. Conclusion The starting presentation levels used for pure-tone audiometry and measurement of ULLs should be lower than those recommended by the BSA for people with tinnitus and hyperacusis.

Real ear measurement methods for open fit hearing aids: Modified pressure concurrent equalization (MPCE) versus modified pressure stored equalization (MPSE)

Abstract Objective: The aim of this study was to assess differences between real ear insertion gains (REIG) measured with the modified pressure concurrent equalization (MPCE) and modified pressure stored equalization (MPSE) methods for open fittings in a typical audiology patient population. Design: REIGs were compared for the two methods using a warble tone sweep at 65 dB SPL. The differences between the two methods at 0.25, 0.5, 1, 2, 3, 4 and 6 kHz were recorded. Study sample: Eighty-three ears of a consecutive sample of 48 candidates for open-fit hearing aids were included. Results: The mean difference between MPSE and MPCE REIGs was less than 1 dB at all frequencies. Analysis of variance showed that the main effect of method was not significant, and there was no significant interaction between method and frequency. Conclusions: The results for the MPSE and MPCE methods did not differ significantly for the patients with mild-to-moderate hearing losses tested here, for whom REIGs were generally less than 20 dB. Further research is needed to identify the REIG values at which the differences between MPCE and MPSE methods become clinically significant.