It′s generally believed that the appropriate stimuli for sound field tests are warble tones and narrow band noise, while pure tone can only be a signal used in the free field and earphone listening conditions. In thi...It′s generally believed that the appropriate stimuli for sound field tests are warble tones and narrow band noise, while pure tone can only be a signal used in the free field and earphone listening conditions. In this study, we take a measurement of sound pressure distribution, sound field variability, and effects of frequency shifting on sound pressure levels (SPLs) at reference points of pure tone in an audiometric test room. It was found that the pure tone SPLs were also distributed uniformly at some sound field areas although it was not so well as warble tones. This indicated that the test results were relatively stable to head movement and/or frequency shifting in those regions, which was confirmed by the clinical measurements on 20 subjects with severe sensorineural hearing loss. Our study concluded that pure tones could also be suitable for sound field audiometry if subjects were seated at a proper location on the basis of the sound field calibrations.展开更多
<strong>Aim:</strong> Chronic otitis media (COM) is chronic muco purulent discharge through a perforated tympanic membrane. Theossicular chain damage is found in both mucosal and squamosal types of COM. We...<strong>Aim:</strong> Chronic otitis media (COM) is chronic muco purulent discharge through a perforated tympanic membrane. Theossicular chain damage is found in both mucosal and squamosal types of COM. We aim to evaluate relationship between preoperative otologic features, pure tone audiometric findings and intraoperative ossicular chain status in patients with chronic otitis media. <strong>Material and Methods:</strong> 100 patients of either sex aged between 12 to 60 years operated for active or inactive, squamosal or mucosal chronic otitis media attending Ram Lal Eye and ENT Hospital, Government Medical College Amritsar were taken. The preoperative ossicular chain status based on set parameters was compared with the intraoperative ossicular chain status. <strong>Results:</strong> The ossicular chain integrity is more commonly compromised in squamosal COM and the most common ossicle eroded is Incus. Pure tone audiogram has got a very important role in determining the ossicular chain integrity preoperatively and must be done in all cases with accuracy. <strong>Conclusion:</strong> It is concluded that on the basis of otoscopic examination and pure tone audiometry values, we can accurately classify the COM as mucosal or squamosal type and get an idea of the ossicular chain integrity preoperatively hence planning the extent of surgery.展开更多
Aim: To assess the hearing status of the study subjects in terms of degree and type of hearing loss, and establish the burden of this disability in the society. Materials and methods: This is a prospective study condu...Aim: To assess the hearing status of the study subjects in terms of degree and type of hearing loss, and establish the burden of this disability in the society. Materials and methods: This is a prospective study conducted in patients who attend our OPD. After an otorhinolaryngeal examination, all the patients were subjected to pure tone audiometry using MAICA-MA52 audiometer. Results: Our study comprises 1012 males (64%) and 563 females (36%). Out of this, about 15% have conductive deafness and 42% have sensorineural hearing loss. About 29% suffer from mild hearing loss, 26% moderate and 11% severe hearing loss. The alarming information is that about 5% have total hearing loss of Sudden Sensorineural type (SSNHL). Conclusion: Pure tone audiometry is cost effective and easy to perform. Early diagnosis and timely intervention will reduce the morbidity of deafness in our country. Hence it is necessary to identify and treat sudden sensorineural hearing loss and noise induced hearing loss at an early stage.展开更多
目的研究纯音测听对听骨链病变类型的预测价值,以及不同类型听骨链病变患者听骨链重建术后的远期听力效果。方法回顾性分析2013年至2017年间于北京大学第三医院耳鼻咽喉头颈外科行鼓室成形及听骨链重建术的患者,按照术中发现的听骨链病...目的研究纯音测听对听骨链病变类型的预测价值,以及不同类型听骨链病变患者听骨链重建术后的远期听力效果。方法回顾性分析2013年至2017年间于北京大学第三医院耳鼻咽喉头颈外科行鼓室成形及听骨链重建术的患者,按照术中发现的听骨链病变类型将其分为3组:(A)听骨链中断组,(BC)听骨链固定组,(D)听骨链完整而被病变包绕组。比较3组患者术前、术后的纯音测听结果,包括平均气导听阈(pure tone audiometry,PTA)、气骨导差(airbonegap,ABG)以及各频率的气、骨导阈值。结果入组92例患者,共计93侧耳,随访时间均大于6个月。3组患者术前PTA、ABG及各频率气导阈值均有统计学差异(P<0.05)。D组术前气导呈低频下降为主的听力曲线,骨导听力基本正常;A组与BC组术前气导呈平坦型下降曲线,伴有明显的中高频骨导下降。3组患者术后PTA、ABG均较术前显著降低(P<0.05),其中BC组阈值降低最明显,D组术后低频听阈基本恢复到正常范围。结论当听骨链中断且固定时,其听力损失主要由听骨链固定所致。听骨链固定引起的听力下降程度最重,骨气导间距最大,听骨链完整但被病变包绕引起的听力损失最轻。听骨链重建术能够有效改善患者的听力,其中听骨链固定的患者术后听力改善程度最明显。展开更多
BACKGROUND Numerous studies have found that patients experiencing sudden sensorineural hearing loss(SSHL),with or without accompanying vertigo,often show impaired vestibular function.However,there is a dearth of studi...BACKGROUND Numerous studies have found that patients experiencing sudden sensorineural hearing loss(SSHL),with or without accompanying vertigo,often show impaired vestibular function.However,there is a dearth of studies analyzing vestibularevoked myogenic potentials(VEMPs)in SSHL patients across various age groups.AIM To investigate vestibular condition in SSHL patients across various age demographics.METHODS Clinical data of 84 SSHL patients were investigated retrospectively.Audiometry,cervical vestibular evoked myogenic potentials(c-VEMPs),and ocular vestibular evoked myogenic potentials(o-VEMPs)were conducted on these patients.Parameters assessed included the latencies of P1 and N1 waves,as well as the amplitudes of P1–N1 waves.Moreover,the study evaluated the influence of factors such as sex,affected side,configuration of hearing loss,and presence of accompanying vertigo.RESULTS Among the 84 SSHL patients,no significant differences were observed among the three groups in terms of gender,affected side,and the presence or absence of vertigo.Group II(aged 41–60 years)had the highest number of SSHL cases.The rates of absent o-VEMPs in the affected ears were 20.83%,31.58%,and 22.72%for the three age groups,respectively,with no statistically significant difference among them.The rates of absent c-VEMPs in the affected ears were 8.3%,34.21%,and 18.18%for the three age groups,respectively,with significant differences.In the unaffected ears,there were differences observed in the extraction rates of o-VEMPs in the unaffected ears among the age groups.In the three age groups,no significant differences were noted in the three age groups in the latencies of P1 and N1 waves or in the amplitude of N1–P1 waves for c-VEMPs and o-VEMPs,either on the affected side or on the unaffected side,across the three age groups.CONCLUSION The extraction rate of VEMPs is more valuable than parameters.Regardless of the presence of vertigo,vestibular organs are involved in SSHL.Notably,SSHL patients aged 41–60 appear more susceptible to damage to the inferior vestibular nerve and saccule.展开更多
Background: Hearing is a unique sense that allows communication. Hearing loss leads to mental depression, social deprivation, cognitive decline, and gradually decreasing daily performance, making the person handicappe...Background: Hearing is a unique sense that allows communication. Hearing loss leads to mental depression, social deprivation, cognitive decline, and gradually decreasing daily performance, making the person handicapped. Presbycusis is a disease of older people, suffering 360 million worldwide. Methods: The present study is a cross-sectional study in the Comilla Medical College (https://www.cumc.edu.bd) and Cumilla Medical Centre (http://www.comillamedicalcentre.com/) of the Department of the Otolaryngology and Head-Neck Surgery Cumilla, Bangladesh, from 01 February 2024 to 31 July 2024. Results: The study was conducted in a developing country searching for adequate rehabilitation with hearing aids at maximum hearing loss. Hearing rehabilitation faces challenges like low awareness, stigma, and insufficient healthcare infrastructure. The paired sample T-test was done between pure tone audiometry (PTA) tests before and after using a hearing aid in the right and left ear. It showed that hearing aids significantly increased hearing that p ≤ 0.001. The t-test of WHO quality of life before and after using hearing aids revealed p ≤ 0.001, and the HHIE-S score exhibited p ≤ 0.001. Conclusion: It needs adequate support to improve hearing health by increasing the number of audiologists and trained healthcare workers and supplying low-cost hearing aids and services.展开更多
文摘It′s generally believed that the appropriate stimuli for sound field tests are warble tones and narrow band noise, while pure tone can only be a signal used in the free field and earphone listening conditions. In this study, we take a measurement of sound pressure distribution, sound field variability, and effects of frequency shifting on sound pressure levels (SPLs) at reference points of pure tone in an audiometric test room. It was found that the pure tone SPLs were also distributed uniformly at some sound field areas although it was not so well as warble tones. This indicated that the test results were relatively stable to head movement and/or frequency shifting in those regions, which was confirmed by the clinical measurements on 20 subjects with severe sensorineural hearing loss. Our study concluded that pure tones could also be suitable for sound field audiometry if subjects were seated at a proper location on the basis of the sound field calibrations.
文摘<strong>Aim:</strong> Chronic otitis media (COM) is chronic muco purulent discharge through a perforated tympanic membrane. Theossicular chain damage is found in both mucosal and squamosal types of COM. We aim to evaluate relationship between preoperative otologic features, pure tone audiometric findings and intraoperative ossicular chain status in patients with chronic otitis media. <strong>Material and Methods:</strong> 100 patients of either sex aged between 12 to 60 years operated for active or inactive, squamosal or mucosal chronic otitis media attending Ram Lal Eye and ENT Hospital, Government Medical College Amritsar were taken. The preoperative ossicular chain status based on set parameters was compared with the intraoperative ossicular chain status. <strong>Results:</strong> The ossicular chain integrity is more commonly compromised in squamosal COM and the most common ossicle eroded is Incus. Pure tone audiogram has got a very important role in determining the ossicular chain integrity preoperatively and must be done in all cases with accuracy. <strong>Conclusion:</strong> It is concluded that on the basis of otoscopic examination and pure tone audiometry values, we can accurately classify the COM as mucosal or squamosal type and get an idea of the ossicular chain integrity preoperatively hence planning the extent of surgery.
文摘Aim: To assess the hearing status of the study subjects in terms of degree and type of hearing loss, and establish the burden of this disability in the society. Materials and methods: This is a prospective study conducted in patients who attend our OPD. After an otorhinolaryngeal examination, all the patients were subjected to pure tone audiometry using MAICA-MA52 audiometer. Results: Our study comprises 1012 males (64%) and 563 females (36%). Out of this, about 15% have conductive deafness and 42% have sensorineural hearing loss. About 29% suffer from mild hearing loss, 26% moderate and 11% severe hearing loss. The alarming information is that about 5% have total hearing loss of Sudden Sensorineural type (SSNHL). Conclusion: Pure tone audiometry is cost effective and easy to perform. Early diagnosis and timely intervention will reduce the morbidity of deafness in our country. Hence it is necessary to identify and treat sudden sensorineural hearing loss and noise induced hearing loss at an early stage.
文摘目的研究纯音测听对听骨链病变类型的预测价值,以及不同类型听骨链病变患者听骨链重建术后的远期听力效果。方法回顾性分析2013年至2017年间于北京大学第三医院耳鼻咽喉头颈外科行鼓室成形及听骨链重建术的患者,按照术中发现的听骨链病变类型将其分为3组:(A)听骨链中断组,(BC)听骨链固定组,(D)听骨链完整而被病变包绕组。比较3组患者术前、术后的纯音测听结果,包括平均气导听阈(pure tone audiometry,PTA)、气骨导差(airbonegap,ABG)以及各频率的气、骨导阈值。结果入组92例患者,共计93侧耳,随访时间均大于6个月。3组患者术前PTA、ABG及各频率气导阈值均有统计学差异(P<0.05)。D组术前气导呈低频下降为主的听力曲线,骨导听力基本正常;A组与BC组术前气导呈平坦型下降曲线,伴有明显的中高频骨导下降。3组患者术后PTA、ABG均较术前显著降低(P<0.05),其中BC组阈值降低最明显,D组术后低频听阈基本恢复到正常范围。结论当听骨链中断且固定时,其听力损失主要由听骨链固定所致。听骨链固定引起的听力下降程度最重,骨气导间距最大,听骨链完整但被病变包绕引起的听力损失最轻。听骨链重建术能够有效改善患者的听力,其中听骨链固定的患者术后听力改善程度最明显。
基金the Innovative Program of Hebei Provincial Eye Hospital,No.2023ZZ107.
文摘BACKGROUND Numerous studies have found that patients experiencing sudden sensorineural hearing loss(SSHL),with or without accompanying vertigo,often show impaired vestibular function.However,there is a dearth of studies analyzing vestibularevoked myogenic potentials(VEMPs)in SSHL patients across various age groups.AIM To investigate vestibular condition in SSHL patients across various age demographics.METHODS Clinical data of 84 SSHL patients were investigated retrospectively.Audiometry,cervical vestibular evoked myogenic potentials(c-VEMPs),and ocular vestibular evoked myogenic potentials(o-VEMPs)were conducted on these patients.Parameters assessed included the latencies of P1 and N1 waves,as well as the amplitudes of P1–N1 waves.Moreover,the study evaluated the influence of factors such as sex,affected side,configuration of hearing loss,and presence of accompanying vertigo.RESULTS Among the 84 SSHL patients,no significant differences were observed among the three groups in terms of gender,affected side,and the presence or absence of vertigo.Group II(aged 41–60 years)had the highest number of SSHL cases.The rates of absent o-VEMPs in the affected ears were 20.83%,31.58%,and 22.72%for the three age groups,respectively,with no statistically significant difference among them.The rates of absent c-VEMPs in the affected ears were 8.3%,34.21%,and 18.18%for the three age groups,respectively,with significant differences.In the unaffected ears,there were differences observed in the extraction rates of o-VEMPs in the unaffected ears among the age groups.In the three age groups,no significant differences were noted in the three age groups in the latencies of P1 and N1 waves or in the amplitude of N1–P1 waves for c-VEMPs and o-VEMPs,either on the affected side or on the unaffected side,across the three age groups.CONCLUSION The extraction rate of VEMPs is more valuable than parameters.Regardless of the presence of vertigo,vestibular organs are involved in SSHL.Notably,SSHL patients aged 41–60 appear more susceptible to damage to the inferior vestibular nerve and saccule.
文摘Background: Hearing is a unique sense that allows communication. Hearing loss leads to mental depression, social deprivation, cognitive decline, and gradually decreasing daily performance, making the person handicapped. Presbycusis is a disease of older people, suffering 360 million worldwide. Methods: The present study is a cross-sectional study in the Comilla Medical College (https://www.cumc.edu.bd) and Cumilla Medical Centre (http://www.comillamedicalcentre.com/) of the Department of the Otolaryngology and Head-Neck Surgery Cumilla, Bangladesh, from 01 February 2024 to 31 July 2024. Results: The study was conducted in a developing country searching for adequate rehabilitation with hearing aids at maximum hearing loss. Hearing rehabilitation faces challenges like low awareness, stigma, and insufficient healthcare infrastructure. The paired sample T-test was done between pure tone audiometry (PTA) tests before and after using a hearing aid in the right and left ear. It showed that hearing aids significantly increased hearing that p ≤ 0.001. The t-test of WHO quality of life before and after using hearing aids revealed p ≤ 0.001, and the HHIE-S score exhibited p ≤ 0.001. Conclusion: It needs adequate support to improve hearing health by increasing the number of audiologists and trained healthcare workers and supplying low-cost hearing aids and services.
