scholarly journals Noise Induce Hearing Loss among Peshmerga in Erbil City Participated in Daesh War

2021 ◽  
Vol 21 (1) ◽  
pp. 28-34
Author(s):  
Bayan Sabr Ibrahim ◽  
Keyword(s):  
Hearing Loss ◽  
Teaching Hospital ◽  
Pure Tone ◽  
Age Groups ◽  
Common Disease ◽  
Noise Induced Hearing Loss ◽  
Noise Induce Hearing Loss ◽  
Pure Tone Audiogram ◽  
The Right ◽  
The Military

Background: The aim of the study was to know noise induces hearing loss and the effect of the noise on peshmerga that participated in the Daesh war in Erbil city. One of the health problems or most common forms of sensorineural is the noise induced-hearing loss. depending on the exposure noise induce cause damaging of the cochlea. So, one of the causes of noise induced hearing loss is exposure to the excessive noise. Objective: To determine noise induce hearing loss among peshmerga participated in the Daesh war in Erbil city. Patients and Methods: In the present study, a total of (253) Peshmerga of four special brigades who exposed to noise in the Daesh war in Erbil city was performed, also pure tone audiogram was done for each peshmerga in the Auditory department at Hawler teaching hospital. Also, pure tone audiogram and firearm noise levels for the right and left ear for each degree of hearing loss for the range of the noise induced hearing loss (4000Hz) performed and hearing loss range in dB. Slight/Mild from 16-40dB, Moderate/Moderate severe from 41-70dB, and Severe/ Severe profound from 71-120 dB. were evaluated for each peshmerga in the auditory department at Hawler teaching hospital to know the cause of inducing hearing loss. Subjects answered a questionnaire and underwent threshold tonal audiometry. Results: Two hundred and fifty-three peshmerga who participated in the Daesh war, was enrolled in this study that subdivided into four age groups (20-29), (30-39), (40-49), (50-59) years, pure tone audiogram was done for each peshmerga for right and left ear. Conclusion: Because of the nature of the profession military, the common disease in the military is induce hearing loss is caused by noise. Hearing is the vital origin during exposure to loud noise. So, prevention is needed and to be a learner with care to the use of hearing protection device. Keywords: Peshmerga, noise, audiogram, daesh

scholarly journals Noise Induced Hearing Loss among Aircrews of Bangladesh Air Force

2021 ◽  
Vol 16 (1) ◽  
pp. 12-15
Author(s):  
Iftekharul Islam ◽  
Md Abdullah Al Jobair ◽  
Mohammad Ahmed Ahsan ◽  
Mushtaq Ahmad ◽  
Mohammad Delwar Hossain ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Air Force ◽  
Pure Tone ◽  
Prolonged Exposure ◽  
Age Groups ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
Noise Induced Hearing Loss ◽  
Cross Sectional ◽  
Military Pilots

Introduction: Noise-induced hearing loss is a significant, often unrecognized health problem among the military pilots. Advanced aircraft are powerful and more efficient but generate high noise causing noise-induced hearing loss (NIHL) among military pilots. Aim: To determine the prevalence of noise-induced hearing loss among pilots of the Bangladesh Air Force (BAF) and its association with aircraft type and flying hours. Methods: This cross-sectional study was carried out at Central Medical Board (CMB), Bangladesh Air Force (BAF) Dhaka from April 2017 to March 2018. The audiometry was done in the ENT department of CMB, BAF. Pure-tone audiometry was used to measure hearing thresholds and following pure tone frequencies were used for the test: 0.25, 0.5, 1, 2, 3, 4, 6 and 8 kHz. The association between flight hours and the development of noise-induced hearing loss was analyzed in the different age groups. Results: The study revealed NIHL in the aircrew was 16.5% with a higher prevalence among the helicopter pilots (18.6%) as compared with fighter (16.7%) and transport (11.5%) pilots. The left ear was affected in most of the cases than the right ear. Pilots of more than 40 years old and ≥1500 flying hours had a significantly higher hearing threshold compared with other categories. Conclusion: Exposure to noise in aircrew is unavoidable. By avoiding prolonged exposure to loud noise environments and utilization of personal hearing safety devices can prevent noise-induced hearing loss. JAFMC Bangladesh. Vol 15, No 1 (June) 2020: 12-15

Lateralized Auditory Symptoms in Central Neuroaudiology Disorder

2013 ◽  
Vol 24 (07) ◽  
pp. 556-563 ◽  
Author(s):  
Frank Musiek ◽  
Linda Guenette ◽  
Krista Fitzgerald
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Small Lesion ◽  
Pure Tone Audiogram ◽  
Heschl’S Gyrus ◽  
Hearing In Noise ◽  
Patient Reported ◽  
Heschl's Gyrus ◽  
Underlying Mechanisms ◽  
The Right

Many individuals with central auditory nervous system (CANS) pathology/disorder report a variety of auditory symptoms with difficulty hearing in noise being one of the most common complaints (Chermak and Musiek, 1992) Interestingly, there seems to be a paucity of information in the literature on lateralized hearing loss symptoms in patients with central auditory disorders. Reported here is a case where the patient reported auditory symptoms, specifically hearing loss that was lateralized distinctly to the right ear. This ear was contralateral to a stroke that involved the left hemisphere with neural compromise limited primarily to the left Heschl's gyrus. Although the patient reported other hearing difficulties, the lateralized symptom of right-sided hearing loss seemed to be the most noticed. While the pure-tone audiogram was totally disassociated from the right ear auditory symptoms, central auditory tests revealed a marked and consistent right ear deficit, which was consistent with the site of lesion. It is rare that a relatively small lesion in Heschl's gyrus results in the perception of hearing loss so specifically localized to the right ear. It is also of interest that a patient with definite complaints of hearing loss would yield a normal, highly symmetrical pure-tone audiogram. The triad of patient symptoms, anatomy of the lesion, and central auditory test findings in this case are discussed, and theories as to possible underlying mechanisms for the patient's auditory deficits are provided.

scholarly journals STUDY OF PREVALENCE AND PATTERN OF HEARING LOSS IN PATIENTS OF HEPATITIS B

2019 ◽  
Vol 3 (12) ◽  
Author(s):  
Kapildev Mondal ◽  
Poulomi Saha
Keyword(s):  
Hearing Loss ◽  
Chronic Hepatitis ◽  
Hepatitis B ◽  
Chronic Hepatitis B ◽  
Pure Tone ◽  
Control Group ◽  
Hepatitis B Infection ◽  
Cellular Carcinoma ◽  
The Right ◽  
Hep B

Hepatitis B has been documented to cause various extra hepatic manifestations along with known hepatic complications. It has been reported that hepatitis-B patients are more susceptible to inner ear damage and hearing loss. The aim of this study is to evaluate hearing loss among patients of   hepatitis B {all 6 categories Hepatitis B infection: chronic Hepatitis B  infection , hepatitis B cirrhosis ,Hepatitis B virus carriers , occult chronic Hepatitis B and Hepatitis B infection with poly arthritis nodosa, hepato cellular carcinoma with hepatitis B}compared with healthy subjects. METHOD: In this case control study 100 Hepatitis B positive patients and 100 age and gender-matched healthy individuals were included over the period of 5 years. All of them were known cases of chronic hepatitis B positive for   HBsAg at least for 18 months. All   patients were aged 18 to 50 years to exclude presence of presbycusis. After base line investigations, they were subjected for all cases and controls were subjected otoscopic examination and hearing assessment using standard pure tone audiometry. Descriptive statistical analysis has been carried out in this study. RESULT: In patients of Hepatitis B (94 patients,6 patients had of  natural death ) pure tone average (mean thresholds 250,500, 1000,2000,4000 &8000 Hz) was 28.4 dB in the right ear and 27.3 dB in the left (hearing loss).In the control group(96 patients,4 patients dropped out), PTA average was 9.9 dB in the right ear and 9.3dB in the left (normal hearing). In both groups, Speech Discrimination score (SDS) was100% in both ears. The percentage of hearing loss in the right and left ear over the total of six frequencies differed significantly in the two groups. Out of 94 patients of control group, 38 patients (40.4%) patients presented with Chronic Liver Disease (CLD), 14 patients (14.8%) patients presented with cirrhosis with Hepatitis B, 6 (6.3%) patients had Poly arthritis Nodosa with Hep-B, 18(19.1%) patients were diagnosed as carrier of Hepatitis-B , 11(11.7%) patients had occult Hepatitis-B and 7(7.4%) patients were diagnosed with hepato cellular carcinoma. Hearing loss was maximum in patients of   PAN with Hep-B. Second highest mean SNHL was seen in patients of Hep-B with cirrhosis .Third highest mean hearing loss was noted in patients with HCC .Forth highest mean hearing loss was noted in patients with occult Hep-B. Fifth highest mean hearing loss was noted in carriers of Hep-B.Lowest group with SNHL was chronic liver disease. CONCLUSION: Regular audiometric tests are recommended for patients with HBV infection to assess their hearing ability and enable the earlier detection of SNHL. We also suggest that HBV presenting with the sudden onset of hearing loss should be examined for the possibility of acute exacerbation of chronic HBV infection. KEYWORDS: Mean, Sensorineural, Hearing loss, Cirrhosis.

scholarly journals Risk Assessment of Recreational Noise–Induced Hearing Loss from Exposure through a Personal Audio System—iPod Touch

2019 ◽  
Vol 30 (07) ◽  
pp. 619-633 ◽  
Author(s):  
Kamakshi V. Gopal ◽  
Liana E. Mills ◽  
Bryce S. Phillips ◽  
Rajesh Nandy
Keyword(s):  
Hearing Loss ◽  
Otoacoustic Emissions ◽  
Pure Tone ◽  
Risk Indicator ◽  
Noise Induced Hearing Loss ◽  
Ipod Touch ◽  
Distortion Product ◽  
Before And After ◽  
Within Subjects ◽  
Loud Music

AbstractRecreational noise–induced hearing loss (RNIHL) is a major health issue and presents a huge economic burden on society. Exposure to loud music is not considered hazardous in our society because music is thought to be a source of relaxation and entertainment. However, there is evidence that regardless of the sound source, frequent exposure to loud music, including through personal audio systems (PAS), can lead to hearing loss, tinnitus, difficulty processing speech, and increased susceptibility to age-related hearing loss.Several studies have documented temporary threshold shifts (TTS) (a risk indicator of future permanent impairment) in subjects that listen to loud music through their PAS. However, there is not enough information regarding volume settings that may be considered to be safe. As a primary step toward quantifying the risk of RNIHL through PAS, we assessed changes in auditory test measures before and after exposure to music through the popular iPod Touch device set at various volume levels.This project design incorporated aspects of both between- and within-subjects and used repeated measures to analyze individual groups.A total of 40 adults, aged 18–31 years with normal hearing were recruited and randomly distributed to four groups. Each group consisted of five males and five females.Subjects underwent two rounds of testing (pre- and postmusic exposure), with a 30-min interval, where they listened to a playlist consisting of popular songs through an iPod at 100%, 75%, 50%, or 0% volume (no music). Based on our analysis on the Knowles Electronic Manikin for Acoustic Research, with a standardized 711 coupler, it was determined that listening to the playlist for 30 min through standard earbuds resulted in an average level of 97.0 dBC at 100% volume, 83.3 dBC at 75% volume, and 65.6 dBC at 50% volume. Pure-tone thresholds from 500–8000 Hz, extended high-frequency pure tones between 9–12.5 kHz, and distortion product otoacoustic emissions (DPOAE) were obtained before and after the 30-min music exposure. Analysis of variance (ANOVA) was performed with two between-subjects factors (volume and gender) and one within-subjects factor (frequency). Change (shift) in auditory test measures was used as the outcome for the ANOVA.Results indicated significant worsening of pure-tone thresholds following music exposure only in the group that was exposed to 100% volume at the following frequencies: 2, 3, 4, 6 and 8 kHz. DPOAEs showed significant decrease at 2000 and 2822 Hz, also only for the 100% volume condition. No significant changes were found between pre- and postmusic exposure measures in groups exposed to 75%, 50%, or 0% volume conditions. Follow-up evaluations conducted a week later indicated that pure-tone thresholds had returned to the premusic exposure levels.These results provide quantifiable information regarding safe volume control settings on the iPod Touch with standard earbuds. Listening to music using the iPod Touch at 100% volume setting for as little as 30 min leads to TTS and worsening of otoacoustic emissions, a risk for permanent auditory damage.

scholarly journals White-matter integrity and hearing acuity decline in healthy subjects: Magnetic resonance tractography

2020 ◽  
Vol 33 (3) ◽  
pp. 236-243
Author(s):  
Fahad H Alhazmi
Keyword(s):  
Hearing Loss ◽  
White Matter ◽  
Pure Tone ◽  
Structural Connectivity ◽  
Normal Hearing ◽  
Anxiety And Depression ◽  
Healthy Population ◽  
Hearing Acuity ◽  
The Right ◽  
Moderate Hearing Loss

Aim The association between hearing acuity and white-matter (WM) microstructure integrity was evaluated in a normal healthy population with a variety of hearing acuity using an automated tractography technique known as TRACULA (TRActs Constrained by UnderLying Anatomy) in order to investigate whether hearing acuity decline is correlated with brain structural connectivity. Methods Forty healthy controls were recruited to this study, which used a Siemens 3T Trio with a standard eight-channel head coil. Hearing acuity was assessed using pure-tone air conduction audiometry (Amplivox 2160, with Audiocups to eliminate noise and allow accurate pure-tone audiometry). Handedness and anxiety and depression were assessed for all participants in this study using the Edinburgh Handedness Inventory and the Hospital Anxiety and Depression Scale, respectively. Results This study showed a significant reduction in WM volume of the left cingulum angular bundle (CAB; t = 2.32, p = 0.02) in the mild to moderate hearing-loss group (238 ± 223 mm2) compared to the group with normal hearing (105  ± 121 mm2). The WM integrity of the left CAB was found to be significantly different ( t = 2.06, p = 0.04) in the mild to moderate hearing-loss group (0.18 ± 0.06 mm2/s) compared to the group with normal hearing (0.22 ± 0.05 mm2/s). The WM integrity of the left anterior thalamic radiation (ATR) was found to be significantly different ( t = 2.58, p = 0.014) in the mild to moderate hearing-loss group (0.33 ± 0.05 mm2/s) compared to the group with normal hearing (0.37 ± 0.03 mm2/s). A significant negative correlation was found between age and the WM integrity of the right ATR ( r = −0.33, p = 0.038), and between hearing acuity and the WM integrity of the right ATR ( r = −0.38, p = 0.013) and left CAB ( r = −0.36, p = 0.019). Discussion and conclusion: An important finding in this study is that brain structural connectivity changes in the left hemisphere seem to be associated with age-related hearing loss found mainly in the ATR and CAB tracts.

scholarly journals “Clinical Profile & Prognostic Factors In Patients with Sudden Sensorineural Hearing Loss”

2021 ◽  
Vol 8 (12) ◽  
pp. 5830-5835
Author(s):  
Md. Feroz Hossen ◽  
Mahbubul Alam Choudhury
Keyword(s):  
Hearing Loss ◽  
Prognostic Factors ◽  
Sensorineural Hearing Loss ◽  
Pure Tone ◽  
Winter Season ◽  
Hearing Threshold ◽  
Sudden Sensorineural Hearing Loss ◽  
Sensorineural Hearing ◽  
Clinical Profile ◽  
Pure Tone Audiogram

Introduction: Idiopathic sudden sensorineural hearing loss (ISSNHL) is an emergency disease requiring immediate diagnosis and treatment. The incidence of ISSNHL in the Western countries’ population was estimated to 5–20 per 100,000 inhabitants. The etiology of ISSNHL remains unknown. Its pathogenesis is most often suggested to be due to a disturbed microcirculation and infection. Objective: To study the clinical profile & prognostic factors in patients with sudden sensorineural hearing loss. Material and Methods: A retrospective study was carried out from patients of sudden sensineural hearing loss (SSNHL) presenting to ENT Department ofNorthern Private Medical College, Rangpur, Bangladesh from January to June-2020. All patients were given intravenous steroids as treatment modality for 14 days and pure tone audiogram was done every 3 days during hospital admission. It was followed by oral steroids in tapering dose for further 14 days. After 1 month, audiogram was done again. After 1 month if hearing threshold was decreased by more than 50% of presenting one, then it was labeled as improved. Results:Total 51 patients (55ears) with age ranging from 6-70 years (average-38.5 years) were included. Three fourth were male. Presentation was 1-14days after onset of hearing loss (average- 3.7days) with pure tone audiogram (PTA) of 38-117dB (average 83.1dB). The flat audiogram (62.3%) was most common type. Smoking was present in 14 patients and tinnitus in 30 ears. Hemoglobin ranged from 7.3-18.7gm %( average- 15.3gm/dl). PTA post treatment was 8-73dB (average- 56dB). Average age of improved patient was 39.8years which was lower than non-improved patients (42.3years). In improved patients, average PTA at presentation was 77.9dB while it was 86.6dB in non-improved patients. Conclusion: Our study demonstrates that the age distribution and clinical characteristics of ISSNHL patients vary according to levels of hearing loss. Moreover, ISSNHL patients with vertigo tend to sufer from a more severe hearing loss. Further studies are needed to obtain better knowledge about the etiopathogenesis of SSNHL.  SSNHL is more commonly seen in male patients with polycythaemia and is commonly presented in winter season and is frequently associated with tinnitus. Young age and lower audiogram threshold at presentation favor prognosis.

scholarly journals HEARING EVALUATION OF NIGERIAN PRISON INMATES: A CROSS-SECTIONAL SURVEY

2020 ◽  
Vol 14 (2) ◽  
pp. 106-114
Author(s):  
Abdullahi Musa Kirfi ◽  
◽  
Mohammed Bello Fufore ◽  
Garba Mohammed Mainasara ◽  
Abdulrazak Ajiya ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
Control Group ◽  
Prison Inmates ◽  
Impaired Hearing ◽  
Cross Sectional ◽  
The Mean ◽  
The Right

Background: Prisoners, due to confinement are isolated from contact with the society and access to many of the facilities, including medical care. This study aimed to evaluate the hearing threshold of inmates of Kaduna convict prison. Method: It was a cross-sectional study of prison inmates at the Kaduna convict prison between April 2017 and February 2019. Ethical approvals were obtained from relevant bodies and all consented inmates aged 18 – 55years in the Kaduna convict prison were enrolled. Equal number of control matched for age and gender were enrolled from the communities in Kaduna North Local Government Area. Data were collated using a structured questionnaire. A diagnostic Pure Tone Audiometry was performed to assess their hearing threshold. Statistical Package for Social Sciences (SPSS) version 20.0 was used for analysis. Results: Four hundred and thirty inmates and equal number of control group were enrolled. The mean age for the inmates and controls were 30.2±7.5 and 30.4±8.02 years respectively. There were 383 males and 47 females in both groups. Among the 860 ears of the inmates, 238(27.7%) ears had hearing loss while in the control group, 95/ (11.1%) ears had impaired hearing. Conductive hearing loss was the commonest among the inmates 111(46.6%) while sensorineural was commoner among the controls 57(60.0%). The mean pure tone average among the inmates was 25.6±11.3dBHL and 26.1±11.2dBHL on the right and left ears respectively while in the control group, it was 18.4±7.8dBHL on the right and 17.9±7.9dBHL on the left. Conclusion: This study revealed that hearing loss was more prevalent among prison inmates than the general population. In majority of the inmates, the hearing loss was mild, conductive and mostly affecting all the frequencies.

AN OBSERVATIONAL STUDY OF HEARING THRESHOLDS IN PROFESSIONAL DRIVERS

2021 ◽  
pp. 49-51
Author(s):  
R. Shanthimalar ◽  
R. Bhuvaneswari ◽  
V. Sumathi
Keyword(s):  
Hearing Loss ◽  
Tamil Nadu ◽  
Pure Tone ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
P Value ◽  
Professional Drivers ◽  
Threshold Levels ◽  
Hearing Thresholds ◽  
The Right

Introduction: Noise has become a very important stress factor in the environment. Drivers are the most commonly affected persons due to trafc noise. The majority of drivers remain unaware about noise induced hearing loss as this is an insidious process, leading to temporary or permanent hearing impairment, but preventable. Pure Tone audiometric test is used to determine the degree of hearing loss in noise exposed individuals. Aim & Objective: To nd the hearing threshold levels for high and mid frequency sounds for both ears in Professional drivers. To evaluate the preponderance of hearing loss between right and left ear using hearing thresholds. Materials & Methods: This study was conducted in 100 Professional male drivers aged between 30-40 years who are working in Tamil Nadu State Transport Corporation, Madurai. Pure tone audiometry was used to measure the high and mid frequency hearing threshold levels in both ears. Results: The mean (SD) hearing threshold for high and mid frequency sounds was signicantly higher in left ear comparative to right ear with P value < 0.05. The statistically signicant difference in hearing loss was observed between both ears. Conclusion : Our study showed statistically signicant higher hearing threshold for high and mid frequency sounds in left ear compared to right ear, that concludes left ear is more prone for hearing loss than the right ear

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