Manibalan Vimalraj, Ramani Dhanesh, Bhat Prajna J
Global Hearing Aids Pvt. Ltd., Chennai, Chennai, India.
Department of Audiology, School of Rehabilitation and Behavioral Sciences, Vinayaka Mission's Research Foundation (DU), Puducherry, India.
Int Marit Health. 2025;76(1):21-27. doi: 10.5603/imh.101888.
Fishermen face multiple occupational health risks including drowning, traumatic injuries, asphyxia, and skin allergies. Additionally, their exposure to high intensities of engine noise during fishing puts them at risk of noise-induced hearing loss (NIHL). Inadequate use of ear protective devices and lack of awareness further contribute to the prevalence of NIHL among fishermen. This study aims to measure the engine noise level of fiber motor boats and develop an audiological profile of fishermen in Puducherry.
Thirty fishermen between the ages of 20 to 45 years, who operate fiber motor boats were tested using pure-tone and speech audiometry, high-frequency audiometry, immittance audiometry, single and multifrequency tympanometry, and distortion product oto-acoustic emissions (DPOAEs). Additionally, the engine noise level of fiber motor boats was measured using a sound level meter.
The engine noise levels ranged from 92 dB(A) to 115 dB(A) and 81 dB(A) to 106 dB(A) at 3 feet and 6 feet distance respectively, which exceeds the permissible 90 dB(A) limit in accordance to Occupational Safety and Health Administration (OSHA) standards for 8 hours. Audiological test results indicated hearing loss primarily at 4 kHz and at higher frequencies. Single and multifrequency tympanometry results were atypical. Although Pure Tone Audiometry (PTA) at standard frequencies was normal, DPOAEs were affected.
It is crucial to educate fishermen about ear care and the use of ear protection to prevent hearing loss due to harmful noise levels. In addition, the importance of using.
渔民面临多种职业健康风险,包括溺水、创伤性损伤、窒息和皮肤过敏。此外,他们在捕鱼过程中暴露于高强度的发动机噪音中,有患噪声性听力损失(NIHL)的风险。耳保护装置使用不足和意识缺乏进一步导致渔民中NIHL的流行。本研究旨在测量纤维摩托艇的发动机噪音水平,并建立本地治里渔民的听力学档案。
对30名年龄在20至45岁之间操作纤维摩托艇的渔民进行了纯音和言语测听、高频测听、声导抗测听、单频和多频鼓室图以及畸变产物耳声发射(DPOAE)测试。此外,使用声级计测量纤维摩托艇的发动机噪音水平。
发动机噪音水平在距离3英尺和6英尺处分别为92 dB(A)至115 dB(A)和81 dB(A)至106 dB(A),根据职业安全与健康管理局(OSHA)的标准,8小时的允许限值为90 dB(A),该噪音水平超过了此限值。听力学测试结果表明主要在4 kHz及更高频率出现听力损失。单频和多频鼓室图结果不典型。尽管标准频率下的纯音听力测定(PTA)正常,但DPOAE受到了影响。
对渔民进行耳部护理和使用耳保护装置以预防有害噪音水平导致的听力损失的教育至关重要。此外,使用……的重要性。