Stumbling Blocks in the Investigation of the Relationship Between Age-Related Hearing Loss and Cognitive Impairment.

The relationship between age-related hearing loss (ARHL) and cognitive impairment (CI) remains intricate. However, there is no robust evidence from experimental or clinical studies to elucidate their relationship. The key unaddressed questions are (a) whether there is a causal effect of ARHL on CI and (b) whether efficacious treatment of ARHL (such as hearing-aid use) ameliorates CI and dementia-related behavioral symptoms. Because of several methodological and systematic flaws/challenges, rigorous verification has not been conducted. Addressing these stumbling blocks is essential to unraveling the relationship between ARHL and CI, which motivated us to undertake this review. Here, we discuss the methodological problems from the perspectives of potential confounding bias, assessments of CI and ARHL, hearing-aid use, functional-imaging studies, and animal models based on the latest information and our experiences. We also identify potential solutions for each problem from the viewpoints of clinical epidemiology. We believe that "objectivity," specifically the use of more objective behavioral assessments and new computerized technologies, may be the key to improving experimental designs for studying the relationship between ARHL and CI.

The genetic landscape of age-related hearing loss.

Age-related hearing loss (ARHL) is a prevalent concern in the elderly population. Recent genome-wide and phenome-wide association studies (GWASs and PheWASs) have delved into the identification of causative variants and the understanding of pleiotropy, highlighting the polygenic intricacies of this complex condition. While recent large-scale GWASs have pinpointed significant SNPs and risk variants associated with ARHL, the detailed mechanisms, encompassing both genetic and epigenetic modifications, remain to be fully elucidated. This review presents the latest advances in association studies, integrating findings from both human studies and model organisms. By juxtaposing historical perspectives with contemporary genomics, we aim to catalyze innovative research and foster the development of novel therapeutic strategies for ARHL.

Metabolic and Sensory Components of Age-Related Hearing Loss: Associations With Distortion- and Reflection-Based Otoacoustic Emissions.

Age-related hearing loss is difficult to study in humans because multiple genetic and environmental risk factors may contribute to pathology and cochlear function declines in older adults. These pathologies, including degeneration of the stria vascularis, are hypothesized to affect outer hair cells responsible for active cochlear amplification of low-level sounds. Otoacoustic emission (OAE) measures are used to quantify the energy added to the traveling wave in cochlear amplification, which typically weakens with increased pure-tone thresholds and for older individuals. Thus, the current study evaluated two OAE measures for individuals with different components of age-related hearing loss. We examined two retrospective adult lifespan datasets (18 to 89+ years of age) from independent sites (Medical University of South Carolina and Boys Town National Research Hospital), which included demographics, noise history questionnaires, distortion-product otoacoustic emissions (DPOAE), and cochlear reflectance (CR). Metabolic and sensory estimates of age-related hearing loss were derived from the audiograms in each dataset, and then tested for associations with DPOAE and CR. The results showed that metabolic estimates increased for older participants and were associated with lower overall DPOAE and CR magnitudes across frequency (i.e., lower fitted intercepts). Sensory estimates were significantly higher for males, who reported more positive noise histories compared to females and were associated with steeper negative across-frequency slopes for DPOAEs. Although significant associations were observed between OAE configurations, DPOAEs appeared uniquely sensitive to metabolic estimates. The current findings suggest that distortion-based measures may provide greater sensitivity than reflection-based measures to the components of age-related hearing loss.

The characteristics of hearing loss in outpatients with tinnitus over the age of 60: a 11-year cross-sectional study.

BACKGROUND: Presbycusis with tinnitus has a significant impact on the quality of life of elderly patients, becoming a serious socioeconomic problem. OBJECTIVES: We conducted an 11-year cross-sectional analysis of the audiometry results of elderly patients with tinnitus from 2011 to 2021. METHODS: 9642 patients aged 60 and over were divided into three groups: young-old (YO) (60-74), old-old (OO) (75-89), and longevous (LON) (90 and over). Pure-tone audiometry results of all patients were analyzed. RESULTS: Among 9642 patients, the cases of female with tinnitus were more than male in all years. The hearing curve showed a typical age-related decline. Hearing level of air conduction in female declined significantly at low frequencies while that of male was worse at high frequencies in YO and OO groups. Compared with right, left hearing level of air conduction was significantly decreased at all frequencies except 0.125 kHz. CONCLUSIONS: When the chief complaint was tinnitus, women were likely to experience more distress than men. However, men suffered from more hearing loss than women, at least in high frequencies. The influence weight of presbycusis and tinnitus on the auditory cortices might be a possible reason for the lateral distinction of hearing loss at different ages.

Construction and Effect of the Three-Level and Two-Stage Screening Mode for Age-Related Hearing Loss: A Study Based on the Community in Shanghai, China.

Background: There is a high incidence rate of age-related hearing loss. Severe hearing loss may increase the prevalence of mental illness, cognitive impairment, and even the risk of all-cause death. Purpose: Construction of the three-level and two-stage screening mode for age-related hearing loss of the community and to evaluate its effectiveness. Materials and Methods: A total of 401 participants (aged 60 years or older) from five typical communities were enrolled in the study. The risk factors assessment of age-related hearing loss was completed by using a cross-sectional survey and receiver operating characteristic (ROC) curve. Multiple screening method was adopted and verified by serial and parallel tests, respectively. Based on research data, incorporate risk factors assessment, the Hearing Handicap Inventory for the Elderly Screening Version (HHIE-s) and pure tone audiometry (PTA) were used to construct the screening mode. Results: Multiple screening series testing and multiple screening parallel testing, including risk factors assessment, HHIE-s, and PTA, were used for verification: the sensitivity, specificity, and Kappa index were 70.5% and 9.2%, 95.0% and 71.6%, 0.26 and 0.63, respectively. Finally, the three-level and two-stage screening mode for age-related hearing loss was established. "Three-level" was defined as the risk factors assessment/HHIE-s (high-risk population), PTA (suspect population), and comprehensive hearing loss assessment (confirmed population). "Two-stage" was defined as the population screening by general practitioner in the community and target screening by otolaryngologist of the tertiary hospitals. Conclusion: The three-level and two-stage screening mode for age-related hearing loss consists of the following framework: from population screening to target screening, from suspicious diagnosis to accurate diagnosis, from primary health care to tertiary hospitals. The study objective is to structure a new secondary prevention and treatment mode for age-related hearing loss with primary health care as the core, so as to help the front-end management of healthy aging.

Presbycusis and Hearing Preservation in Observed Vestibular Schwannomas.

OBJECTIVE: We reviewed a cohort of patients with untreated sporadic vestibular schwannoma (VS) and examined the relationship between high-frequency hearing loss (HFHL) in the non-VS ear and long-term hearing outcomes in the VS-affected ear. We hypothesized that the progression of HFHL is associated with accelerated hearing decline in sporadic VS. STUDY DESIGN: Retrospective cohort study. SETTING: Tertiary center. PATIENTS: We studied 102 patients with sporadic VS diagnosed from 1999 to 2015 with ≥5 years of observation (median, 6.92; interquartile range, 5.85-9.29). Sixty-six patients had AAO-HNS class A/B hearing at presentation and were included in analysis. INTERVENTIONS: Audiometry, serial magnetic resonance imaging for observation of VS. MAIN OUTCOME MEASURES: Four-frequency pure tone average (PTA) and word recognition scores (WRS) in the VS-affected ear. Decline in high-frequency PTA (average of thresholds at 4000, 6000, and 8,000 Hz) was defined as ≥10 dB during the study period. Decline in WRS was defined as ≥10%. RESULTS: Compared with those without, patients with progressive HFHL in the non-VS ear were more likely to experience a decline in WRS in the VS ear (80% vs. 54%, p = 0.031). However, the same group showed no difference (52% vs. 41%, p = 0.40) in decline in PTA of the VS ear. CONCLUSIONS: Patients with observed VS who experience progressive HFHL in the non-VS ear are more likely to experience significant declines in speech understanding in the VS-affected ear over time. Patients with a history of presbycusis may have an increased risk of losing serviceable hearing because of sporadic VS.

Presbycusis and balance disorders in the elderly. Bibliographical review of ethiopathogenic aspects, consequences on quality of life and positive effects of its treatment.

At this time, we still do not have adequate knowledge and awareness of the consequences of hearing loss in the elderly on quality of life. Similarly, there is also insufficient information on the relationship of presbycusis and balance disorders with other comorbidities. Such knowledge can contribute to improve both prevention and treatment of these pathologies, to reduce their impact on other areas such as cognition or autonomy, as well as to have more accurate information on the economic impact they generate in society and in the health system. Therefore, with this review article we aim to update the information on the type of hearing loss and balance disorders in people over 55 years of age, and their associated factors; to analyze the impact on the quality of life of these people and the one which can be generated at a personal and population level (both sociological and economic) if an early intervention in these patients is pursued.

Hipoacusia súbita asociada a depresión: síntoma inusual en adultos mayores infectados por Sars-CoV-2 / Sudden hearing loss associated with depression: an unusual symptom in older adults infected with Sars-CoV-2

Se comienza acumular información sobre las alteraciones en pacientes positivos a Covid-19, donde relacionan el virus con el daño del oído medio y oído interno, tanto en la porción vestibular como la auditiva en adultos mayores, generando episodios depresivos. Por tal razón, se propuso como objetivo evaluar la relación hipoacusia súbita asociada a depresión en adultos mayores infectados por Sars-CoV-2 atendidos en el Hospital Básico Pillaros, perteneciente al sector Ciudadela Ciudad Nueva, Ecuador 2020-2021. El estudio fue cuantitavo, descriptivo correlacional de corte transversal con una muestra de 87 pacientes >65 años positivos para Sars-CoV-2. Para la recolección de datos se aplicó el Test audiométrico y la escala de depresión geriátrica de Yesavage. El análisis de los datos fue con estadística descriptiva en base a frecuencias, porcentajes, IC 95% y X2 a través de SPSS. Como resultado 73,6% eran fememnino y 26,4% masculino, 54,0% tenían de 65-75 años, el tipo de presbiacusia más existente fue neural (31,2%) y coclear (31,0%). Así mismo, 81,6% presentaron signos de depresión, mientras que 18,4% no. En el test Vasayage 88,5% expresó no sentirse lleno de energía y 59,8% sienten temor a que algo malo suceda. Como conclusión, la presencia de trastornos auditivos constituye un problema para la comunicación de los adultos mayores que pudiese conllevar a estados depresivos, por ello, incentivar el desarrollo de investigaciones pudieran orientar hacia el desarrollo de alternativas de intervención temprana que favorezcan el mejoramiento de la calidad de vida de este grupo poblacional(AU)

Information is beginning to accumulate on the alterations in patients positive for Covid -19, where they relate the virus to damage to the middle ear and inner ear, both in the vestibular and auditory portions in older adults, generating depressive episodes. For this reason, the objective was to evaluate the relationship between sudden hearing loss associated with depression in older adults infected with Sars-CoV- treated at the Pillaros Basic Hospital, belonging to the Ciudadela Ciudad Nueva sector, Ecuador 2020-2021. The study was quantitative, descriptive correlational cross-sectional with a sample of 87 patients >65 years positive for Sars-CoV-2. For data collection, the audiometric test and the Yesavage geriatric depression scale were applied. The analysis of the data was with descriptive statistics based on frequencies, percentages, CI 95% and X2 through SPSS. As a result, 73.6% were female and 26.4% male, 54.0% were 65-75 years old, the most common type of presbycusis was neural (31.2%) and cochlear (31.0%). Likewise, 81.6% presented signs of depression, while 18.4% did not. In the Vasayage test, 88.5% expressed not feeling full of energy and 59.8% were afraid that something bad would happen. In conclusion, the presence of hearing disorders constitutes a problem for the communication of older adults that could lead to depressive states, therefore, encouraging the development of research could guide the development of early intervention alternatives that favor quality improvement. life of this population group(AU)

Relationship between hearing, cognitive function, and quality of life in aging companion dogs.

BACKGROUND: Elderly people with presbycusis are at higher risk for dementia and depression than the general population. There is no information regarding consequences of presbycusis in dogs. OBJECTIVE: Evaluate the relationship between cognitive function, quality of life, and hearing loss in aging companion dogs. ANIMALS: Thirty-nine elderly companion dogs. METHODS: Prospective study. Hearing was evaluated using brainstem auditory evoked response (BAER) testing. Dogs were grouped by hearing ability. Owners completed the canine dementia scale (CADES) and canine owner-reported quality of life (CORQ) questionnaire. Cognitive testing was performed, and cognitive testing outcomes, CADES and CORQ scores and age were compared between hearing groups. RESULTS: Nineteen dogs could hear at 50 dB, 12 at 70 dB, and 8 at 90 dB with mean ages (months) of 141 ± 14, 160 ± 16, and 172 ± 15 for each group respectively (P = .0002). Vitality and companionship CORQ scores were significantly lower as hearing deteriorated (6.6-5.4, 50-90 dB group, P = .03 and 6.9-6.2, 50-90 dB group, P = .02, respectively). Cognitive classification by CADES was abnormal in all 90 dB group dogs and normal in 3/12 70 dB group and 11/19 50 dB group dogs (P = .0004). Performance on inhibitory control, detour and sustained gaze tasks decreased significantly with hearing loss (P = .001, P = .008, P = .002, respectively). In multivariate analysis, higher CADES score was associated with worse hearing (P = .01). CONCLUSIONS AND CLINICAL IMPORTANCE: Presbycusis negatively alters owner-pet interactions and is associated with poor executive performance and owner-assessed dementia severity.

Age-related hearing loss and mild cognitive impairment: a meta-analysis and systematic review of population-based studies.

BACKGROUND: The aim of this study was to identify any relationship between hearing loss and mild cognitive impairment. METHOD: This was a systematic review and meta-analysis of randomised controlled trials conducted using Medline and the Cochrane Library up to 24 June 2020. Prospective, cohort and cross-sectional, and observational studies that reported on the relationship between mild cognitive impairment and hearing loss were included. RESULTS: A total of 34 studies reporting data on 48 017 participants were included. Twenty-three studies observed a significant association between hearing loss and mild cognitive impairment. The pooled risk ratio across all studies of prevalence of mild cognitive impairment in people with hearing loss was 1.44 (random-effects; 95 per cent CI = 1.27-1.64; p < 0.00001; I2 = 0 per cent). Significantly more people with mild cognitive impairment had peripheral hearing loss compared with those without (risk ratio, 1.40 random-effects; 95 per cent CI = 1.10-1.77; p = 0.005; I2 = 0 per cent). When the incidence was studied, significantly more people with peripheral hearing loss had mild cognitive impairment compared with those without (risk ratio = 2.06 random-effects; 95 per cent CI = 1.35-3.15; p = 0.0008; I2 = 97 per cent); however; a high level of statistical heterogeneity was evident. CONCLUSION: Most of the studies included in this systematic review observed a significant association between hearing loss and mild cognitive impairment.

Coprevalence of Presbycusis and Its Effect on Outcome of Voice Therapy in Patients With Presbyphonia.

OBJECTIVE: To identify the coprevalence of presbycusis and presbycusis and analyze the effect of presbycusis on compliance and result of voice therapy in presbycusis patients. METHODS: This cross-sectional, prospective cohort study initially screened patients aged ≥65 years who visited our hospital from February 2019 to January 2020. Unaided pure tone audiometry was performed in these subjects to determine the presence of presbycusis. Perceptual voice assessment by an examiner was conducted for screening of presbycusis, and its diagnosis was confirmed through the voice handicap index-10 (VHI-10) questionnaire and a laryngoscopic exam. Patients with presbycusis underwent voice therapy and were assessed for their compliance and outcomes of the treatment according to the coexistence of presbycusis. RESULTS: Among the 221 patients, presbycusis and presbycusis were diagnosed in 125 (56.6%) and 110 (49.8%) patients, respectively. The copresence of these two disorders were identified in 87 (39.4%) patients, and there was a significant correlation between presbycusis and presbycusis. The effects of voice therapy were examined in the consecutive 40 patients who were diagnosed with presbycusis. There were 21 patients without presbycusis and 19 patients with presbycusis. The average pretreatment voice handicap index-10 score was significantly higher in presbycusis patients; there was no significant difference in the incidence of dropout from voice therapy between the groups. The patients without presbycusis showed a significant improvement in the functional communication measurement (FCM) level and maximum phonation time (MPT) compared with those of patients with presbycusis after voice therapy. CONCLUSIONS: Presbyphonia and presbycusis coexisted in many elderly people. The improvement in the FCM level and MPT after voice therapy was relatively low if patients with presbycusis accompanied by presbycusis. The copresence of presbycusis did not significantly affect compliance with voice therapy in the patients.

Characteristics of hearing loss in elderly outpatients over 60 years of age: an annual cross-sectional study.

BACKGROUND: The prevention and treatment of presbycusis becomes a serious health challenge and socio-economic problem. OBJECTIVES: We performed a cross-sectional analysis of the audiometry results of all elderly patients who visited our department throughout the year of 2018. MATERIAL AND METHODS: A total of 5520 people aged 60 and over were included and divided into three groups: young-old group (60-74 years old), old-old group (75-89 years old), and longevous group (over 90 years old). Pure-tone audiometry results of all patients were analyzed. RESULTS: Among the 5520 patients, there were 4445 cases in the young-old group, 1029 cases in the old-old group, and 46 cases in the longevous group, accounting for 80.53, 18.64, and 0.83%, respectively. In the young-old group, normal hearing and mild-moderate hearing loss were the most common, while moderate and severe hearing loss were more common among the old-old group and the longevous group. The hearing curve showed typical age-related hearing loss with a drop at high frequencies. CONCLUSIONS: With an increase in age, patients tend to suffer from more serious hearing disorders. Presbycusis was associated with specific frequency and age characteristics. Understanding these characteristics is of great significance for the prevention and treatment of age-related hearing loss.

Association of Age-Related Hearing Impairment With Physical Functioning Among Community-Dwelling Older Adults in the US.

Importance: Hearing impairment, a common treatable condition, may contribute to poorer physical function with aging. Objective: To assess whether hearing impairment is associated with poorer physical function, reduced walking endurance, and faster decline in physical function. Design, Setting, and Participants: In this cohort study, cross-sectional and longitudinal analyses were performed using data from the 2011 to 2019 period of the Atherosclerosis Risk in Communities study, a population-based study of community-dwelling adults at 4 sites in the US. Exposures: Hearing thresholds (per 10 dB) assessed with pure tone audiometry and categorized as normal hearing or mild, moderate, or severe hearing impairment. Main Outcomes and Measures: Physical function was assessed using the short physical performance battery (SPPB), with composite scores ranging from 0 to 12. A composite score of 6 or less and a score for each component (balance, gait speed, and chair stands) of 2 or less indicated poor performance. Walking endurance was assessed using a 2-minute fast-paced walk test. Tobit regression models adjusted for sociodemographic factors and medical history were used to calculate the mean differences in SPPB composite scores; logistic regression models, to estimate the odds ratios (ORs) of low SPPB composite and component scores; and linear mixed-effects models, to estimate the mean rate of change in SPPB composite scores over time. Results: Of the 2956 participants (mean [SD] age, 79 [4.6] years) who attended study visit 6 between 2016 and 2017, 1722 (58.3%) were women, and 2356 (79.7%) were White. As determined by pure tone audiometry, 973 (33%) participants had normal hearing, 1170 (40%) had mild hearing impairment, 692 (23%) had moderate hearing impairment, and 121 (4%) had severe hearing impairment. In the Tobit regression model, severe hearing impairment was associated with a lower mean SPPB score (ß, -0.82; 95% CI, -0.34 to -1.30) compared with normal hearing. In fully adjusted logistic regression models, hearing impairment was associated with higher odds of low physical performance scores (severe impairment vs normal hearing: OR for composite physical performance, 2.51 [95% CI, 1.47-4.27]; OR for balance, 2.58 [95% CI, 1.62-4.12]; OR for gait speed, 2.11 [95% CI, 1.03-4.33]). Over time (2 to 3 visits; maximum, 8.9 years), participants with hearing impairment had faster declines in SPPB compared with those with normal hearing (moderate hearing impairment × time interaction, -0.34 [-0.52 to -0.16]). In adjusted models for walking endurance, participants with moderate or severe hearing impairment walked a mean distance of -2.81 m (95% CI, -5.45 to -0.17 m) and -5.31 m (95% CI, -10.20 to -0.36 m) than those with normal hearing, respectively, during the 2-minute walk test. Conclusions and Relevance: In this cohort study, hearing impairment was associated with poorer performance, faster decline in physical function, and reduced walking endurance. The results of the longitudinal analysis suggest that hearing impairment may be associated with poorer physical function with aging. Whether management of hearing impairment could delay decline in physical function requires further investigation.

Synergistic effect of smoking on age-related hearing loss in patients with diabetes.

This study investigated the synergistic effects of risk factors on age-related hearing loss (ARHL) using nationwide cross-sectional data of 33,552 individuals from the 2010‒2013 Korea National Health and Nutrition Examination Survey. Patients with ARHL were selected based on their pure-tone audiometry results. Previously reported risk factors for ARHL were analyzed using logistic regression and propensity score-matching, and synergistic effects between risk factors were analyzed using propensity score-matching. Of the 12,570 individuals aged 40-79 years, 2002 (15.9%) met the criteria for ARHL. Male sex, exposure to occupational noise, and diabetes showed a significant relationship with ARHL (p < 0.05) in both the logistic regression and propensity score-matching analyses. Smoking and diabetes showed the strongest significant synergistic effect on ARHL (odds ratio [OR] 1.963, 95% confidence interval [CI] 1.285‒2.998; p = 0.002). In the subgroup analysis based on smoking status, current smokers with diabetes had a significant relationship with ARHL (OR 1.883, CI 1.191‒2.975; p = 0.009), whereas ex-smokers with diabetes did not (OR 1.250; CI 0.880‒1.775; p = 0.246). This implies that current smokers with diabetes may benefit from the cessation of smoking. In conclusion, patients with diabetes should strictly avoid or cease smoking to prevent the progression of ARHL.

Prevalence of presbycusis in an otologically normal population / Prevalencia de presbiacusia en una población otológicamente norma

OBJECTIVE: Presbycusis or age-related hearing loss is a bilaterally symmetric sensorineural hearing loss associated exclusively with age, excluding any other causes of hearing loss. Presbycusis is very relevant because of its high prevalence, and its consequences (e.g., alterations in communication, social isolation, depression, dementia), and the economic impact. This paper reports the first attempt to estimate the prevalence of presbycusis in an otologically normal population, i.e., without previous ear disease, exposure to noise, or potentially ototoxic substances, or familial hearing loss. METHODS: A total of 4290 subjects from 5 to 90 years old were included in the study. RESULTS: No statistically significant differences were found between right and left ear, nor between males and females, in any of the age groups. Presbycusis was detected over 60 years following the WHO classification; although the results vary depending on the classification used. Moderate hearing loss (≥ 41 dB) was detected in the population over 72 years. None of the subjects had severe or profound hearing impairment. The prevalence of presbycusis increased with age, being 100% in individuals aged 80 years and older. The prevalence of presbycusis is highly variable depending on the pure-tone averaged frequencies and the classification system used; therefore, a common classification system should be used. CONCLUSIONS: An otologically normal population is needed to establish the prevalence of presbycusis as in non-screened populations it is the hearing level including all types of hearing loss that is measured, but not presbycusis itself

ANTECEDENTES Y OBJETIVO: La presbiacusia o pérdida auditiva relacionada con la edad, es una hipoacusia neurosensorial bilateral y simétrica asociada exclusivamente a la edad. La presbiacusia es muy relevante debido a su alta prevalencia y sus consecuencias (alteraciones en la comunicación, aislamiento social, depresión, demencia) y el impacto económico. Este es el primer trabajo que aporta datos sobre la prevalencia de la presbiacusia en una población otológicamente normal, es decir, sin enfermedad auditiva previa, exposición a ruido o sustancias potencialmente ototóxicas o pérdida de audición familiar. MATERIAL Y MÉTODOS: Un total de 4.290 sujetos de 5 a 90 años de edad fueron incluidos en el estudio. RESULTADOS: No se encontraron diferencias entre el oído derecho y el izquierdo, ni entre varones y mujeres. La presbiacusia se detectó a partir de los 60 años siguiendo la clasificación de la OMS, aunque los resultados varían dependiendo de la clasificación utilizada. Se detectó hipoacusia moderada (≥ 41dB) en la población mayor de 72 años. Ninguno de los sujetos tenía hipoacusia grave o profunda. La prevalencia de presbiacusia aumentó con la edad, siendo del 100% en individuos de 80 años o más. La prevalencia de la presbiacusia es altamente variable dependiendo de las frecuencias promediadas y del sistema de clasificación utilizado; por lo tanto, debería utilizarse un sistema de clasificación común. CONCLUSIONES: Para establecer la prevalencia de la presbiacusia se necesita una población otológicamente normal ya que, si la población no está cribada, lo que se mide es la hipoacusia que incluye todos los tipos de pérdida auditiva, pero no la presbiacusia de forma aislada

Early Detection of High-frequency Presbycusis Among Normal Hearing Individuals.

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.

The Relationship Between Cisplatin-related and Age-related Hearing Loss During an Extended Follow-up.

OBJECTIVES: Cisplatin-related hearing loss (HL) is claimed to progress after treatment. This controlled longitudinal study with extended follow-up investigates HL in testicular cancer survivors (TCSs) after cisplatin-based chemotherapy (CBCT). STUDY DESIGN: Controlled longitudinal study. METHODS: Eighty-two TCSs treated with CBCT between 1980 and 1994 in Norway participated in two surveys (S1/S3), including pure-tone audiograms (0.125-8 kHz) and self-reported HL, 12 and 31 years after treatment, respectively. Hearing thresholds were age-adjusted based on age-matched hearing thresholds from the general population (controls). Hearing loss was defined as thresholds >20 dB at any frequency. RESULTS: Between the two surveys, the prevalence of high-frequency HL (4, 6, and 8 kHz) increased from 73% to 94% but approached those of the aging general population after age adjustment. In TCSs aged >40 years at first survey, HL at the subsequent survey equaled that of controls. Self-reported HL increased from seven (9%) at S1 to 20 (26%) at S3. At S1, age-adjusted HL was identified in all (seven) TCSs reporting decreased hearing whereas at S3, hearing thresholds did not differ from controls in seven out of 20 patients reporting HL. CONCLUSION: CBCT-related ototoxicity causes high-frequency HL, but in contrast to reports from follow-up studies from the first post-treatment decade, no major progression was found beyond the first post-treatment decade for frequencies 0.125-8 kHz. Importantly, with extended follow-up, hearing thresholds of patients approach those of the general population, possibly due to a less-than-additive effect with age-related hearing loss (ARHL) in CBCT-treated patients. Age-and sex-matching is strongly advised in long-term follow-up of CBCT-related ototoxicity. Specificity for detecting ototoxicity with self-reported questionnaires decreases with extended follow-up. LEVEL OF EVIDENCE: 3 Laryngoscope, 130:E515-E523, 2020.

Quantitative criteria for age-related hearing loss using audiometric configuration analysis.

OBJECTIVES: To suggest the most adaptable criteria of age-related hearing loss (ARHL) using prevalence matching with population-based data. METHODS: We chose 30, 25, 20, and 15 dB as gap ranges of cutoff values of the descending type of hearing loss, between an average of low (500 Hz, 1 kHz) and high (4 kHz, 6 kHz) frequencies. Interaural difference was defined as 10 or 15 dB. Hearing loss was defined over 25 dB. We compared the prevalence results of the cross-matching criteria. We used population-based data from the Korea National Health and Nutrition Examination Survey. We assumed that the prevalence of ARHL ranged from 25 to 35%, and this prevalence will increase gradually with age. RESULTS: Among the eight possible criteria, age ≥ 65 years, average of all frequencies > 25 dB at the each sides, gap between low- and high frequencies ≥ 20 dB, and interaural difference ≤ 10 dB were the most suitable criteria to suggest a quantitative definition of ARHL audiometrically. CONCLUSION: In the current study, we recommend the new, quantitative ARHL criteria. The suggested criteria for ARHL might be easily accessed by other researchers to demonstrate their own hypotheses.