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Wyszukujesz frazę "pure tone audiometry" wg kryterium: Temat


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Tytuł:
Hearing status of people occupationally exposed to ultrasonic noise
Autorzy:
Dudarewicz, Adam
Zamojska-Daniszewska, Małgorzata
Zaborowski, Kamil
Pawlaczyk-Łuszczyńska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2084911.pdf
Data publikacji:
2022-06-08
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
noise
pure-tone audiometry
otoacoustic emissions
noise-induced hearing loss
ultrasonic noise
extended high-frequency audiometry
Opis:
ObjectivesThe aim of the study was to evaluate the hearing status of operators of low-frequency ultrasonic devices compared to employees exposed to audible noise at a similar A-weighted sound pressure level (SPL) but without ultrasonic components.Material and MethodsStandard pure-tone audiometry, extended high-frequency audiometry (EHFA), transient-evoked otoacoustic emissions (TEOAE), and distortion-product otoacoustic emissions (DPOAE), as well as questionnaire surveys were conducted among 148 subjects, aged 43.1±10.8 years, working as ultrasonic device operators for 18.7±10.6 years. Their exposure to noise within the ultrasonic and audible frequency range was also evaluated. The control group comprised 168 workers, adjusted according to gender, age (±2 years), tenure (±2 years), and the 8-hour daily noise exposure level (LEX,8h) of ±2 dB.ResultsThe ultrasonic device operators and the control group were exposed to audible noise at LEX,8h of 80.8±3.9 dB and 79.1±3.4, respectively. The Polish maximum admissible intensity (MAI) values for audible noise were exceeded in 16.8% of the ultrasonic device operators, while 91.2% of them were exposed to ultrasonic noise at SPL>MAI values. There were no significant differences between the groups in terms of the hearing threshold levels (HTLs) up to 3 kHz, while the ultrasonic device operators exhibited significantly higher (worse) HTLs, as compared to the control group, in the range of 4–14 kHz. The results of the DPOAE and TEOAE testing also indicated worse hearing among the ultrasonic device operators. However, the differences between the groups were more pronounced in the case of EHFA and DPOAEs.ConclusionsThe outcomes of all hearing tests consistently indicated worse hearing among the ultrasonic device operators as compared to the control group. Both EHFA and DPOAE seem to be useful tools for recognizing early signs of hearing loss among ultrasonic device operators.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2022, 35, 3; 309-325
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Noise exposure and hearing status among employees using communication headsets
Autorzy:
Pawlaczyk-Łuszczyńska, Małgorzata
Dudarewicz, Adam
Zaborowski, Kamil
Zamojska-Daniszewska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2153012.pdf
Data publikacji:
2022
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
noise-induced hearing loss
pure-tone audiometry
otoacoustic emissions
communication headsets
occupational exposure to noise
extended high-frequency audiometry
Opis:
Objectives The objective of this study was to assess the hearing of employees using communication headsets with regard to their exposure to noise. Material and Methods The study group comprised 213 employees, including 21 workers of the furniture industry, 15 court transcribers and 177 call center operators, aged 19–55 years, working with headsets for a period of up to 25 years. All the participants underwent a standard puretone audiometry, extended high-frequency audiometry (EHFA) as well as transient-evoked otoacoustic emissions (TEOAEs) and distortion-product otoacoustic emissions (DPOAEs). Noise exposure from headsets was evaluated using the microphone in a real ear technique according to PN-EN ISO 11904-1:2008. Results Personal daily noise exposure levels ranged 57–96 dB and exceeded 85 dB only in 1.4% of the call center operators. Forty-two percent of the participants had bilateral normal hearing in the standard frequency range of 250–8000 Hz, and 33% in the extended highfrequency range of 9–16 kHz. It was found that DPOAEs were present bilaterally in 59% of the participants. Reproducibility of TEOAE at >70% and signal-to-noise ratio at >6 was exhibited by 42% and 17% of them, respectively. The 3 subgroups of workers differed in age, gender, noise exposure and type of headsets in use. However, after adjusting for age and gender, significant differences between these subgroups in terms of hearing were mostly visible in EHFA. A significant impact of age, gender, daily noise exposure level and current job tenure on hearing tests results was also noted among the call center operators and the transcribers. The most pronounced were the effects of age and gender, whereas the impact of the daily noise exposure level was less evident. Conclusions It seems that EHFA is useful for recognizing early signs of noise-induced hearing loss among communication headset users. However, further studies are needed before any firm conclusions concerning the risk of hearing impairment due to the use of such devices can be drawn.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2022, 35, 5; 585-614
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exposure to excessive sounds and hearing status in academic classical music students
Autorzy:
Pawlaczyk-Łuszczyńska, Małgorzata
Zamojska-Daniszewska, Małgorzata
Dudarewicz, Adam
Zaborowski, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/2161930.pdf
Data publikacji:
2017-02-21
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
noise-induced hearing loss
music students
exposure to excessive sounds
pure-tone audiometry
hearing threshold levels
high-frequency notches
Opis:
Objectives The aim of this study was to assess hearing of music students in relation to their exposure to excessive sounds. Material and Methods Standard pure-tone audiometry (PTA) was performed in 168 music students, aged 22.5±2.5 years. The control group included 67 subjects, non-music students and non-musicians, aged 22.8±3.3 years. Data on the study subjects’ musical experience, instruments in use, time of weekly practice and additional risk factors for noise-induced hearing loss (NIHL) were identified by means of a questionnaire survey. Sound pressure levels produced by various groups of instruments during solo and group playing were also measured and analyzed. The music students’ audiometric hearing threshold levels (HTLs) were compared with the theoretical predictions calculated according to the International Organization for Standardization standard ISO 1999:2013. Results It was estimated that the music students were exposed for 27.1±14.3 h/week to sounds at the A-weighted equivalent-continuous sound pressure level of 89.9±6.0 dB. There were no significant differences in HTLs between the music students and the control group in the frequency range of 4000–8000 Hz. Furthermore, in each group HTLs in the frequency range 1000–8000 Hz did not exceed 20 dB HL in 83% of the examined ears. Nevertheless, high frequency notched audiograms typical of the noise-induced hearing loss were found in 13.4% and 9% of the musicians and non-musicians, respectively. The odds ratio (OR) of notching in the music students increased significantly along with higher sound pressure levels (OR = 1.07, 95% confidence interval (CI): 1.014–1.13, p < 0.05). The students’ HTLs were worse (higher) than those of a highly screened non-noise-exposed population. Moreover, their hearing loss was less severe than that expected from sound exposure for frequencies of 3000 Hz and 4000 Hz, and it was more severe in the case of frequency of 6000 Hz. Conclusions The results confirm the need for further studies and development of a hearing conservation program for music students. Int J Occup Med Environ Health 2017;30(1):55–75
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2017, 30, 1; 55-75
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena narażenia na hałas i czasowych zmian słuchu związanych z pracą na stanowisku instruktora fitness
An assessment of exposure to noise and temporary changes in hearing related to working as a fitness instructor
Autorzy:
Wolniakowska, Anna
Dudarewicz, Adam
Zaborowski, Kamil
Pawlaczyk-Łuszczyńska, Małgorzata
Śliwińska-Kowalska, Mariola
Powiązania:
https://bibliotekanauki.pl/articles/2081843.pdf
Data publikacji:
2021-08-31
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
ekspozycja zawodowa
hałas
czasowe zmiany słyszenia
audiometria tonalna
klub fitness
uszkodzenia słuchu spowodowane hałasem
occupational exposure
noise
temporary changes in hearing
pure tone audiometry
fitness club
noise-induced hearing impairment
Opis:
Muzyka jest dla wielu osób nieodłącznym elementem życia. W ostatnich latach głośna muzyka, zarówno grana na żywo, jak i odtwarzana, stanowi istotne źródło hałasu. Celem niniejszej pracy była ocena związku między ekspozycją na wysokie poziomy dźwięku a czasowym przesunięciem progu słuchu (temporary threshold shift – TTS) u osób pracujących na stanowisku instruktora fitness. Materiał i metody Badaniem objęto 29 osób (26 kobiet i 3 mężczyzn, średnia wieku: 33±6 lat) zatrudnionych w 8 klubach fitness. Poziomy dźwięków i charakterystykę częstotliwościową hałasu zmierzono z zastosowaniem dozymetrii indywidualnej. Progi słuchu oceniano za pomocą audiometrii tonalnej przeprowadzanej przed rozpoczęciem zajęć fitness oraz bezpośrednio po ich zakończeniu, otrzymując łącznie 116 audiogramów przed- i poekspozycyjnych.WynikiZawodowe narażenie instruktorów fitness na hałas trwało 60–120 min, a równoważny poziom ciśnienia akustycznego A (LAeq,T) w miejscu ich pracy wynosił 76,3–96,0 dB (M = 87,1 dB). W 12% indywidualnych pomiarów odnotowano przekroczenie najwyższego dopuszczalnego natężenia (NDN) hałasu na stanowisku pracy (NDN = 85 dB). U 41% badanych instruktorów zaobserwowano TTS o wielkości ≥6 dB dla częstotliwości 4 kHz.WnioskiPraca instruktorów w klubach fitness może stwarzać ryzyko uszkodzenia słuchu związanego z pracą zawodową. Med. Pr. 2021;72(4):391–397
Music is for many people an integral part of their lives. In recent years, loud music, whether recorded or played live, has been a significant source of noise. The aim of the study was to assess the relationship between exposure to high sound levels and temporary threshold shift (TTS) in people working as fitness instructors.Material and MethodsThe study included a total of 29 people (26 women and 3 men, age: 33±6 years) employed in 8 fitness clubs. The sound levels and the frequency characteristics of noise were assessed using individual dosimetry. Hearing threshold was evaluated by pre- and post-exposure pure tone audiometry (PTA), yielding a total of 116 audiograms.ResultsOccupational exposure of fitness instructors to noise lasted 60–120 min and the A-weighted sound pressure level (LAeq,T) in their workplace ranged 76.3–96.0 dBA (M = 87.1 dB). In 12% of individual measurements, the maximum admissible intensity (MAI) value for noise at the workplace was exceeded (MAI = 85 dB). In 41% of the surveyed instructors, a TTS of ≥6 dB at 4 kHz was observed.ConclusionsFitness instructors may be a risk of hearing impairment related to their work. Med Pr. 2021;72(4):391–7
Źródło:
Medycyna Pracy; 2021, 72, 4; 391-397
0465-5893
2353-1339
Pojawia się w:
Medycyna Pracy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena czasowych zmian słuchu związanych z pracą na stanowisku barmana
Assessment of temporary hearing changes related to work as a bartender
Autorzy:
Wolniakowska, Anna
Zaborowski, Kamil
Dudarewicz, Adam
Pawlaczyk-Łuszczyńska, Małgorzata
Śliwińska-Kowalska, Mariola
Powiązania:
https://bibliotekanauki.pl/articles/2162600.pdf
Data publikacji:
2019-02-28
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
ekspozycja zawodowa
uszkodzenie słuchu spowodowane hałasem
hałas
czynniki ryzyka uszkodzenia słuchu spowodowanego hałasem
czasowe zmiany słyszenia
audiometria tonalna
occupational exposure
noise-induced hearing loss
noise
risk factors of NIHL
temporary changes in hearing
pure-tone audiometry
Opis:
Wstęp W przemyśle rozrywkowym hałas często osiąga wysokie poziomy ciśnienia akustycznego, jednak ryzyko uszkodzenia słuchu w tym sektorze nie zostało jeszcze dokładnie ocenione. Celem pracy była ocena związku między ekspozycją na wysoki poziom dźwięku a czasowym przesunięciem progu słuchu u osób pracujących na stanowisku barmana w lokalach rozrywkowych. Materiał i metody Badaniem objęto 18 barmanów (średni wiek: 25±7 lat) zatrudnionych w klubie muzycznym (N = 8), pubie (N = 5) i dyskotece (N = 5). Poziomy dźwięków oraz charakterystyka częstotliwościowa hałasu były określane za pomocą dozymetrii indywidualnej. Progi słuchu oceniano za pomocą audiometrii tonalnej przeprowadzanej przed rozpoczęciem dnia pracy oraz bezpośrednio (do 15 min) po jego zakończeniu. Badania słuchu przeprowadzono u barmanów w czasie 2 lub 3 sesji badawczych podczas pracy w weekendy. Uzyskano 92 audiogramy przed- i poekspozycyjne. Wyniki Uśrednione równoważne poziomy dźwięku odniesione do 8-godzinnego dnia pracy w ocenianych 3 lokalach muzycznych wynosiły 95 dBA, przekraczając ponad czterokrotnie dopuszczalne prawnie normy. U 77% badanych osób wykazano przynajmniej w 1 sesji pomiarowej czasowe przesunięcia progów słuchu ≥ 10 dB HL dla częstotliwości 4 kHz. Wnioski Osoby pracujące na stanowisku barmana stanowią grupę zawodową o podwyższonym ryzyku utraty słuchu. Niezbędne jest zwiększanie świadomości tego faktu oraz wdrażanie u tych pracowników programów ochrony słuchu, zgodnie z dyrektywą Komisji Europejskiej (EU 2003/10/WE). Med. Pr. 2019;70(1):17–25
Background Noise in entertainment industry often reaches high sound pressure levels. Nevertheless, the risk of hearing loss in this sector is insufficiently recognized. The aim of this study was the assessment of the relationship between noise exposure and temporary threshold shifts (TTS) for people working as bartenders at a variety of entertainment venues. Material and Methods The study comprised a total of 18 bartenders (mean age was 25±7 years old) employed at a music club (N = 8), pub (N = 5) and discotheque (N = 5). Personal dosimeters were used for determining noise levels and frequency characteristics. Hearing was evaluated by pre- (before work) and post-exposure (up to 15 min after the end of work) pure tone audiometry. Hearing tests were carried out for bartenders during 2 or 3 sessions while working on weekends. Results The mean personal noise exposure level normalized to a nominal 8-hour working day was 95 dBA, above 4 times higher than the accepted legal limit. The TTS values (10 dB HL or more) were significant at 4 kHz for both ears for 77% of bartenders. Conclusions People working as bartenders represent a professional group with an increased risk of hearing loss. Raising awareness of this fact and implementing hearing protection programs in this group of workers is urgently needed, in line with the European Commission Directive (EU Directive 2003/10/EC). Med Pr. 2019;70(1):17–25
Źródło:
Medycyna Pracy; 2019, 70, 1; 17-25
0465-5893
2353-1339
Pojawia się w:
Medycyna Pracy
Dostawca treści:
Biblioteka Nauki
Artykuł
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