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Leung JH, Thorne PR, Purdy SC, Cheyne K, Steptoe B, Ambler A, Hogan S, Ramrakha S, Caspi A, Moffitt TE, Poulton R. Trajectories of Hearing From Childhood to Adulthood. Ear Hear 2024:00003446-990000000-00301. [PMID: 38898547 DOI: 10.1097/aud.0000000000001542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
OBJECTIVES The Dunedin Multidisciplinary Health and Development Study provides a unique opportunity to document the progression of ear health and hearing ability within the same cohort of individuals from birth. This investigation draws on hearing data from 5 to 13 years and again at 45 years of age, to explore the associations between childhood hearing variables and hearing and listening ability at age 45. DESIGN Multiple linear regression analyses were used to assess associations between childhood hearing (otological status and mid-frequency pure-tone average) and (a) age 45 peripheral hearing ability (mid-frequency pure-tone average and high-frequency pure-tone average), and (b) age 45 listening ability (listening in spatialized noise and subjective questionnaire on listening experiences). Sex, childhood socioeconomic status, and adult IQ were included in the model as covariates. RESULTS Peripheral hearing and listening abilities at age 45 were consistently associated with childhood hearing acuity at mid-frequencies. Otological status was a moderate predicting factor for high-frequency hearing and utilization of spatial listening cues in adulthood. CONCLUSIONS We aim to use these findings to develop a foundational model of hearing trajectories. This will form the basis for identifying precursors, to be investigated in a subsequent series of analyses, that may protect against or exacerbate hearing-associated cognitive decline in the Dunedin Study cohort as they progress from mid-life to older age.
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Affiliation(s)
- Joan H Leung
- Faculty of Science, School of Psychology, University of Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, Centre for Brain Research, University of Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, Eisdell Moore Centre for Hearing and Balance Research, School of Medicine, University of Auckland, Auckland, New Zealand
- Faculty of Science, Department of Psychology, Dunedin Multidisciplinary Health and Development Research Unit, University of Otago, Dunedin, New Zealand
| | - Peter R Thorne
- Faculty of Science, School of Psychology, University of Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, Centre for Brain Research, University of Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, Eisdell Moore Centre for Hearing and Balance Research, School of Medicine, University of Auckland, Auckland, New Zealand
| | - Suzanne C Purdy
- Faculty of Science, School of Psychology, University of Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, Centre for Brain Research, University of Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, Eisdell Moore Centre for Hearing and Balance Research, School of Medicine, University of Auckland, Auckland, New Zealand
| | - Kirsten Cheyne
- Faculty of Science, Department of Psychology, Dunedin Multidisciplinary Health and Development Research Unit, University of Otago, Dunedin, New Zealand
| | - Barbara Steptoe
- Faculty of Science, Department of Psychology, Dunedin Multidisciplinary Health and Development Research Unit, University of Otago, Dunedin, New Zealand
| | - Antony Ambler
- Faculty of Science, Department of Psychology, Dunedin Multidisciplinary Health and Development Research Unit, University of Otago, Dunedin, New Zealand
| | - Sean Hogan
- Faculty of Science, Department of Psychology, Dunedin Multidisciplinary Health and Development Research Unit, University of Otago, Dunedin, New Zealand
| | - Sandhya Ramrakha
- Faculty of Science, Department of Psychology, Dunedin Multidisciplinary Health and Development Research Unit, University of Otago, Dunedin, New Zealand
| | - Avshalom Caspi
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina, USA
- Department of Biostatistics and Bioinformatics, Center for Genomic and Computational Biology, Duke University, Durham, North Carolina, USA
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
- PROMENTA, Faculty of Social Sciences, University of Oslo, Oslo, Norway
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, North Carolina, USA
| | - Terrie E Moffitt
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina, USA
- Department of Biostatistics and Bioinformatics, Center for Genomic and Computational Biology, Duke University, Durham, North Carolina, USA
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
- PROMENTA, Faculty of Social Sciences, University of Oslo, Oslo, Norway
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, North Carolina, USA
| | - Richie Poulton
- Faculty of Science, Department of Psychology, Dunedin Multidisciplinary Health and Development Research Unit, University of Otago, Dunedin, New Zealand
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Gisselsson-Solen M, Gunasekera H, Hall A, Homoe P, Kong K, Sih T, Rupa V, Morris P. Panel 1: Epidemiology and global health, including child development, sequelae and complications. Int J Pediatr Otorhinolaryngol 2024; 178:111861. [PMID: 38340606 DOI: 10.1016/j.ijporl.2024.111861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 12/19/2023] [Accepted: 01/09/2024] [Indexed: 02/12/2024]
Abstract
OBJECTIVE To summarise the published research evidence on the epidemiology of otitis media, including the risk factors and sequelae associated with this condition. DATA SOURCES Medline (PubMed), Embase, and the Cochrane Library covering the period from 2019 to June 1st, 2023. REVIEW METHODS We conducted a broad search strategy using otitis [Medical Subject Heading] combined with text words to identify relevant articles on the prevalence, incidence, risk factors, complications, and sequelae for acute otitis media, otitis media with effusion, and chronic suppurative otitis media. At least one review author independently screened titles and abstracts of the retrieved records for each condition to determine whether the research study was eligible for inclusion. Any discrepancies were resolved by reviewing the full text followed by discussion with a second review author. Studies with more than 100 participants were prioritised. RESULTS Over 2,000 papers on otitis media (OM) have been published since 2019. Our review has highlighted around 100 of these publications. While the amount of otitis media research on the Medline database published each year has not increased, there has been an increase in epidemiological studies using routinely collected data and systematic review methodology. Most of the large incidence studies have addressed acute otitis media (AOM) in children. Several studies have described a decrease in incidence of AOM after the introduction of conjugate PCV vaccines. Similarly, a decrease was noted when rates of coronavirus disease of 2019 (COVID-19) were high and there were major public health efforts to reduce the spread of infection. There have been new studies on OM in adults and OM prevalence in a broader range of countries and population subgroups. CONCLUSION Overall, the rates of severe and/or suppurative OM appeared to be decreasing. However, there is substantial heterogeneity between populations. While better use of available data is informative, it can be difficult to predict rates of severe disease without accurate examination findings. Most memorably, the COVID-19 pandemic had an enormous impact on the research and clinical services for otitis media for most of the period under review. IMPLICATIONS FOR PRACTICE The use of routinely collected data for epidemiological studies will lead to greater variability in the definitions and diagnostic criteria used. The impact of new vaccines will continue to be important. Some of the lessons learned during the COVID-19 pandemic concerning behaviours that reduce spread of respiratory viruses can hopefully be used to decrease the burden of otitis media in the future. There are still many countries in the world where the burden of otitis media is not well described. In countries where otitis media has been studied over many years, new potential risk factors continue to be identified. In addition, a better understanding of the disease in specific subgroups has been achieved.
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Affiliation(s)
- Marie Gisselsson-Solen
- Department of Otorhinolaryngology, Head and Neck Surgery, Lund University Hospital, Lund, Sweden.
| | - Hasantha Gunasekera
- Children's Hospital Westmead Clinical School, University of Sydney, Australia
| | | | - Preben Homoe
- Department of Otorhinolaryngology and Maxillofacial Surgery, Zeeland University Hospital, Koege, Denmark
| | - Kelvin Kong
- School of Medicine and Public Health, Newcastle, Australia
| | - Tania Sih
- Medical School University of Sao Paolo, Brazil
| | | | - Peter Morris
- Menzies School of Health Research Charles Darwin University Darwin, Australia
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Ziniel SI, Preciado D, Lee R, Kerschner JE, Ryan AF, Santos-Cortez RLP. Ensuring the future of otitis media research: Interest in and feasibility of a mentoring network program within the otitis media research community. Int J Pediatr Otorhinolaryngol 2023; 172:111693. [PMID: 37579520 PMCID: PMC10523683 DOI: 10.1016/j.ijporl.2023.111693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 08/03/2023] [Indexed: 08/16/2023]
Abstract
OBJECTIVES The goal of this study was to assess the feasibility of the implementation of a mentoring network program based on expressed interest and the diverse composition of the otitis media research community in order to address attrition of the scientific workforce. METHODS An online survey was sent to basic, translational, and clinical researchers with a known interest in otitis media. RESULTS Of 509 eligible participants, 119 (23.4%) responded to the survey. Survey respondents had a diverse background by completed education, current job description, and membership in an underrepresented group in science. Most faculty respondents (76.4%) were willing to participate in the proposed program as mentors and faculty lecturers, or had early-career researchers or trainees in their research group who were willing to participate as mentees in the mentoring network. Scientific and non-scientific topics for inclusion in the training program were ranked, with immunology and inflammation, microbiology, science leadership and collaboration, mentoring, and grantsmanship as main foci of interest among respondents. CONCLUSION Our survey results showed enthusiastic participation among responding otitis media researchers, indicating the feasibility of implementing a mentoring network program that will address workforce attrition, particularly among underrepresented groups in science.
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Affiliation(s)
- Sonja I Ziniel
- Section of Pediatric Hospital Medicine, Children's Hospital Colorado, Aurora, CO, 80045, United States; Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States.
| | - Diego Preciado
- Departments of Pediatrics and Surgery, George Washington University School of Medicine, Washington D.C., District of Columbia, 20010, United States; Department of Pediatric Otolaryngology, Children's Research Institute, Children's National Health System, Washington D.C., District of Columbia, 20010, United States.
| | - Rita Lee
- Department of Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States.
| | | | - Allen F Ryan
- Department of Otolaryngology, University of California San Diego School of Medicine and Veterans Affairs Medical Center, La Jolla, CA, 92093, United States.
| | - Regie Lyn P Santos-Cortez
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, United States; Center for Children's Surgery, Children's Hospital Colorado, Aurora, CO, 80045, United States.
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Pauli N, Sunnergren O, Florentzson R. High frequency hearing 25 years after transmyringeal ventilation tube treatment. Int J Pediatr Otorhinolaryngol 2023; 167:111509. [PMID: 36907111 DOI: 10.1016/j.ijporl.2023.111509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/22/2023] [Accepted: 03/04/2023] [Indexed: 03/14/2023]
Abstract
OBJECTIVES The main aim of the study was to compare hearing outcome between a healthy control group and patients treated with transmyringeal ventilation tubes, 25 years after primary surgery. Another aim was to analyse the relation between ventilation tube treatment in childhood and the occurrence of persistent middle ear pathology 25 years later. METHODS In 1996, children treated with transmyringeal ventilation tubes were recruited for a prospective study on the outcome of ventilation tube treatment. In 2006, a healthy control group were recruited and examined together with the original participants (case group). All participants in the 2006 follow-up were eligible for this study. A clinical ear microscopy examination including eardrum pathology grading and high frequency audiometry (10-16 kHz) was carried out. RESULTS A total of 52 participants were available for analysis. Hearing outcome was worse in the treatment group (n = 29) compared to the control group (n = 29), both in regard to standard frequency range hearing, (0.5-4 kHz), and high frequency hearing (HPTA3 10-16 kHz). Almost half the case group (48%) had eardrum retraction to some extent, compared to 10% in the control group. No case of cholesteatoma was found in this study and eardrum perforation was rare (<2%). CONCLUSION In the long term, high frequency hearing (HPTA3 10-16 kHz) was more often affected in the patients with transmyringeal ventilation tube treatment during childhood compared with the healthy controls. Middle ear pathology of greater clinical significance was rare.
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Affiliation(s)
- Nina Pauli
- Department of Otorhinolaryngology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Otorhinolaryngology, Gothenburg, Sweden.
| | - Ola Sunnergren
- Region Jönköping County, Ryhov Hospital, Ear, Nose and Throat Clinic, Jönköping, Sweden
| | - Rut Florentzson
- Department of Otorhinolaryngology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Region Västra Götaland, Sahlgrenska University Hospital, Department of Otorhinolaryngology, Gothenburg, Sweden
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Low Evidence for Tinnitus Risk Factors: A Systematic Review and Meta-analysis. J Assoc Res Otolaryngol 2023; 24:81-94. [PMID: 36380120 PMCID: PMC9971395 DOI: 10.1007/s10162-022-00874-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
AIMS/HYPOTHESIS Identifying risk factors for tinnitus could facilitate not only the recommendations for prevention measures, but also identifying potential pathways for new interventions. This study reports the first comprehensive systematic review of analytical observational studies able to provide information about causality (i.e., case-control and cohort designs). METHODS A literature search of four electronic databases identified epidemiological studies published on tinnitus and different exposures. Independent raters screened all studies, extracted data, and evaluated study quality using the Newcastle-Ottawa Scale. Reported relative risks (RR), hazard ratios (HR), odds ratios (OR), and prevalence ratios (PR) with 95% confidence intervals (CI) were used to compute crude estimates of RR for tinnitus risk factors. RESULTS From 2389 records identified, a total of 374 articles were read as full text (24 reviews, 301 cross-sectional studies, 42 cohort studies, and 7 case-control studies). However, from 49 case-control and cohort studies, only 25 adequately reported risk ratios. Using the findings from these studies, positive causal associations were found for various hearing-related factors (i.e., unspecified hearing loss, sensorineural hearing loss, occupational noise exposure, ototoxic platinum therapy, and otitis media). Evidence was also found for a number of non-otological risk factors including temporo-mandibular joint disorder, depression, chronic obstructive pulmonary disease, and hyperlipidemia. Negative associations indicating preventative effects were found for diabetes and high alcohol consumption. No associations were found for low alcohol consumption, body mass index, head injury, heart failure, hypertension, leisure noise exposure, migraine, rheumatoid arthritis, sex, smoking, stroke, and whiplash. However, with the exception of unspecified hearing loss, these findings resulted from pooling no more than 4 studies, illustrating that the vast majority of the associations still remain inconclusive. CONCLUSIONS These systematic review and meta-analysis confirm a number of otological and non-otological risk factors for tinnitus. By highlighting major gaps in knowledge, our synthesis can help provide direction for future research that will shed light on the pathophysiology, improve management strategies, and inform more effective preventions.
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Molaug I, Engdahl B, Degerud E, Mehlum IS, Aarhus L. Occupation and 20-year hearing decline: findings from The HUNT Study. Occup Med (Lond) 2022; 72:622-628. [PMID: 36039845 PMCID: PMC9805300 DOI: 10.1093/occmed/kqac085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Studies show that certain occupations are associated with an increased risk of hearing loss. However, many studies are cross-sectional, and the few longitudinal studies are mostly small or focus on only one occupation. AIMS We aimed to quantify the long-term hearing decline among workers in different occupations and assess whether the change differs between the occupations. METHODS The study population was 4525 adults who participated in two population-based health studies in Norway, HUNT2 1996-1998 and HUNT4 2017-2019. Linear regression models assessed the association between occupations (clerks as reference) and 20-year hearing decline (hearing thresholds at 3-6 kHz, averaged over both ears) from HUNT2 to HUNT4. Models were adjusted for age, sex, recurrent ear infections, smoking and ear pathology. RESULTS Among the participants (40% men), the mean age at HUNT2 was 31.2 ± 5.4 years (range 20-39) and the average 20-year hearing decline was 11.3 ± 9.8 dB. Occupations that were associated with larger hearing decline included other craft and related trades workers (3.9 dB, 95% confidence interval [CI] 0.2-7.7) and building frame and related trades workers (3.4 dB, 95% CI 1.3-5.4). Among occupations with larger hearing decline, a higher proportion of the workers reported exposure to noise. CONCLUSIONS This large longitudinal study shows a larger long-term hearing decline among building frame workers and craft and related trades workers. Differences between occupations were modest, which may indicate successful preventive measures in Norway during the last two decades.
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Affiliation(s)
- I Molaug
- The National Institute of Occupational Health in Norway, Oslo, Norway
| | - B Engdahl
- The Norwegian Institute of Public Health, Oslo, Norway
| | - E Degerud
- The National Institute of Occupational Health in Norway, Oslo, Norway
| | - I S Mehlum
- The National Institute of Occupational Health in Norway, Oslo, Norway
- The Institute of Health and Society, University of Oslo, Oslo, Norway
| | - L Aarhus
- The National Institute of Occupational Health in Norway, Oslo, Norway
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Perdrizet J, Farkouh RA, Horn EK, Hayford K, Sings HL, Wasserman MD. The broader impacts of otitis media and sequelae for informing economic evaluations of pneumococcal conjugate vaccines. Expert Rev Vaccines 2022; 21:499-511. [PMID: 35191368 DOI: 10.1080/14760584.2022.2040989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Otitis media (OM) is a common childhood infection. Pneumococcal conjugate vaccines (PCVs) prevent OM episodes, thereby reducing short- and long-term clinical, economic, humanistic, and societal consequences. Most economic evaluations of PCVs focus on direct health gains and cost savings from prevented acute episodes but do not fully account for the broader societal impacts of OM prevention. AREAS COVERED This review explores the broader burden of OM on children, caregivers, and society to better inform future economic evaluations of PCVs. EXPERT OPINION OM causes a substantial burden to society through long-term sequelae, productivity losses, reduced quality of life for children and caregivers, and contribution to antimicrobial resistance from inappropriate antibiotic use. The effect of PCVs on acute OM has been recognized globally, yet the broader impact has not been consistently quantified, studied, or communicated. Economic evaluations of PCVs must evolve to include broader effects for patients, caregivers, and society from OM prevention. Future PCVs with broader coverage may further reduce OM incidence and antimicrobial resistance, but optimal uptake will depend on increasing the recognition and use of novel frameworks that include broader benefits. Communicating the full value of PCVs to decision makers may result in wider access and positive societal returns.
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Affiliation(s)
- Johnna Perdrizet
- Health Economics and Outcomes Research, Pfizer Inc, New York, NY, USA
| | - Raymond A Farkouh
- Health Economics and Outcomes Research, Pfizer Inc, New York, NY, USA
| | - Emily K Horn
- Health Economics and Outcomes Research, Pfizer Inc, New York, NY, USA
| | - Kyla Hayford
- Vaccines Medical Development and Scientific and Clinical Affairs, Pfizer, Inc., Toronto, Canada
| | - Heather L Sings
- Vaccines Medical Development and Scientific and Clinical Affairs, Pfizer, Inc., Collegeville, PA, USA
| | - Matt D Wasserman
- Health Economics and Outcomes Research, Pfizer Inc, New York, NY, USA
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Abstract
There is a lack of studies assessing how hearing impairment relates to reproductive outcomes. We examined whether childhood hearing impairment (HI) affects reproductive patterns based on longitudinal Norwegian population level data for birth cohorts 1940-1980. We used Poisson regression to estimate the association between the number of children ever born and HI. The association with childlessness is estimated by a logit model. As a robustness check, we also estimated family fixed effects Poisson and logit models. Hearing was assessed at ages 7, 10 and 13, and reproduction was observed at adult ages until 2014. Air conduction hearing threshold levels were obtained by pure-tone audiometry at eight frequencies from 0.25 to 8 kHz. Fertility data were collected from Norwegian administrative registers. The combined dataset size was N = 50,022. Our analyses reveal that HI in childhood is associated with lower fertility in adulthood, especially for men. The proportion of childless individuals among those with childhood HI was almost twice as large as that of individuals with normal childhood hearing (20.8% vs. 10.7%). The negative association is robust to the inclusion of family fixed effects in the model that allow to control for the unobserved heterogeneity that are shared between siblings, including factors related to the upbringing and parent characteristics. Less family support in later life could add to the health challenges faced by those with HI. More attention should be given to how fertility relates to HI.
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Elzinga HBE, van Oorschot HD, Stegeman I, Smit AL. Relation between otitis media and sensorineural hearing loss: a systematic review. BMJ Open 2021; 11:e050108. [PMID: 34385254 PMCID: PMC8362691 DOI: 10.1136/bmjopen-2021-050108] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 07/26/2021] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES This systematic review summarises the evidence on the correlation between recurrent acute otitis media (rAOM) or chronic suppurative otitis media (CSOM) and sensorineural hearing loss (SNHL). RESEARCH METHODS PubMed, Embase and Cochrane Library databases were searched from inception to 15 January 2021. Two authors independently identified articles, extracted data and performed quality assessment for included studies. Studies comparing the sensorineural hearing levels of patients with a history of rAOM/CSOM for >3 months to a control group were included. RESULTS Screening of 4168 articles lead to inclusion of two case-control studies (control-group: patients non-OM) and seven cohort-studies (control group: contralateral ear). Quality assessment indicated considerable risk of bias in all studies. Reported populations varied (sample size 13-607, mean age 22-41.5 years, mean duration of disease 6.1-12.4 years). The OR for SNHL in the OM-group was 3.30-7.86 (95% CI 1.16 to 9.40, p<0.05) in cohort studies (n=2), and 0.05 (95% CI 0 to 0.78, p<0.05) in a case-control study. Mean/median bone conduction thresholds were respectively 1.19-32.21/0-10 dB higher on all frequencies (0.5-4 kHz) for the OM-group in four cohort studies (p<0.05). Two other studies reported no statistical test outcomes. CONCLUSION Due to the high risk of bias of included studies, effect estimates heterogeneity and suboptimal research designs, no conclusion on the correlation between OM and SNHL can be made. It emphasises the need for future prognostic studies.
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Affiliation(s)
| | | | - Inge Stegeman
- Department of Otorhinolaryngology, Head and Neck Surgery, UMC Utrecht, Utrecht, The Netherlands
- Department of Translational Neuroscience, UMC Utrecht Brain Center, Utrecht, The Netherlands
| | - Adriana L Smit
- Department of Otorhinolaryngology, Head and Neck Surgery, UMC Utrecht, Utrecht, The Netherlands
- Department of Translational Neuroscience, UMC Utrecht Brain Center, Utrecht, The Netherlands
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Monsanto RDC, Penido NDO, Uchiyama M, Schachern P, Paparella MM, Cureoglu S. Quantitative assessment of cochlear and vestibular ganglion neurons in temporal bones with chronic otitis media. Eur Arch Otorhinolaryngol 2020; 278:331-338. [PMID: 32488375 PMCID: PMC10123924 DOI: 10.1007/s00405-020-06094-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 05/26/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE In this study, we aimed to determine whether or not COM leads to loss of spiral and Scarpa ganglion neurons. METHODS From the human temporal bone (HTB) collection at the University of Minnesota we selected human temporal bones with COM, defined as the presence of clinically intractable tissue abnormalities in the middle ear (cholesteatoma, perforation of the eardrum, granulation tissue, fibrosis, tympanosclerosis, and cholesterol granuloma). We also selected HTBs from donors with no ear diseases as controls. We quantitatively analyzed the number of spiral and Scarpa ganglion cells and compared the results obtained in the control and study groups. RESULTS In both COM and control groups we observed a significant negative correlation between age and number of both spiral (R = -0.632; P < 0.001; 95% CI - 0.766 to - 0.434) and Scarpa ganglion (R = - 0.404; P = 0.008; 95% CI - 0.636 to - 0.051) cells. We did not find any significant differences in the number of spiral ganglion cells (in total or per segment) or in the density of Scarpa ganglion cells (in each vestibular nerve or both) in the COM group as compared with controls (P > 0.05). CONCLUSIONS AND RELEVANCE Our results did not demonstrate significant loss of cochlear or vestibular peripheral ganglion neuron loss in HTBs with COM as compared with controls.
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Affiliation(s)
- Rafael da Costa Monsanto
- Department of Otolaryngology Head and Neck Surgery, Universidade Federal de São Paulo/Escola Paulista de Medicina (UNIFESP/EPM), R dos Otonis, 700 - piso superior - Vila Clementino, São Paulo, SP, 04037-004, Brazil.
| | - Norma de Oliveira Penido
- Department of Otolaryngology Head and Neck Surgery, Universidade Federal de São Paulo/Escola Paulista de Medicina (UNIFESP/EPM), R dos Otonis, 700 - piso superior - Vila Clementino, São Paulo, SP, 04037-004, Brazil
| | - Mio Uchiyama
- Department of Otolaryngology, Showa University, Tokyo, Japan.,Department of Otolaryngology Head and Neck Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Patricia Schachern
- Department of Otolaryngology Head and Neck Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Michael M Paparella
- Department of Otolaryngology Head and Neck Surgery, University of Minnesota, Minneapolis, MN, USA.,Paparella Ear Head and Neck Institute, Minneapolis, MN, USA
| | - Sebahattin Cureoglu
- Department of Otolaryngology Head and Neck Surgery, University of Minnesota, Minneapolis, MN, USA
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Aarhus L, Engdahl B. Occupational noise exposure and asymmetric hearing loss: Results from the HUNT population study in Norway. Am J Ind Med 2020; 63:535-542. [PMID: 32187713 DOI: 10.1002/ajim.23105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 01/30/2023]
Abstract
BACKGROUND A large population study with adequate data on confounders is required to determine whether asymmetric hearing loss (AHL) is associated with occupational noise exposure. METHODS We performed a cross-sectional population study in Norway (the Health Investigation in Nord-Trøndelag: HUNT) with 24 183 participants, using pure-tone audiometry and questionnaires. AHL was defined as a difference in hearing threshold between the right and left ears of greater than or equal to 15 dB for the pure-tone average of 0.5 to 2 or 3 to 6 kHz. RESULTS The mean age of the participants was 53 years (range, 19-99); 53% were women. The prevalence of AHL in this general Norwegian population was 6% for the 0.5 to 2 kHz range and 15% for 3 to 6 kHz. In unadjusted regression models, subjects reporting prolonged occupational noise exposure to high-level noise sources (N = 1652) had a higher risk of AHL at 3 to 6 kHz than those reporting no prior exposure (odds ratio [OR], 1.98; 95% confidence interval [CI], 1.75-2.25). After adjustment for age and sex, OR was 1.08; (95% CI, 0.95-1.24). After additional adjustment for head trauma, ear infections, blasting or shooting (all associated with AHL), smoking, and diabetes, OR was 1.00 (95% CI, 0.87-1.16). No association between occupational noise and right-ear hearing threshold advantage (left-right ear difference) was observed after adjustment for confounders. CONCLUSION Our study suggests that AHL is relatively common in the general population, especially at the high-frequency range in men and elderly subjects. Our study showed no relation between occupational noise exposure and AHL after confounder adjustment.
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Affiliation(s)
- Lisa Aarhus
- Department of Occupational Medicine and EpidemiologyNational Institute of Occupational HealthOslo Norway
| | - Bo Engdahl
- Department of Chronic Diseases and AgeingNorwegian Institute of Public HealthOslo Norway
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