Associations of blood pressure and arterial compliance with occupational noise exposure in female workers of textile mill  

作　　者：NI Chun-hui CHEN Zhi-yong ZHOU Yin ZHOU Jian-wei Pan Jing-jing LIU Nian WANG Jun LIANG Chen-ke ZHANG Zhi-zhong ZHANG Yu-jun 

机构地区：[1]Department of Occupational Medicine and Environmental Health, School of Public Health, Nanjing Medical University, Nanjing 210029, China [2]Centres for Disease Prevention and Control, Baoying County 225800, Jiangsu Province, China

出　　处：《Chinese Medical Journal》2007年第15期1309-1313,共5页中华医学杂志（英文版）

摘　　要：Background There are few studies on the arterial compliance of noise exposure. The purpose of this study was to understand the relationship between hearing loss, blood pressure and arterial compliance of female workers who exposed to occupational noise in a textile mill. Methods The noise levels in the workplace were measured with a HS6288 sound level meter. Cumulated noise exposure （CNE） was calculated according to the noise intensity and the exposure period. Hearing ability and arterial compliance were measured in 618 noise exposed workers. The database was set up with EpiData and the statistical analysis was performed with SAS software 9.1.3. Results The noise levels were 80.1dB（A） to 113.5dB（A）, of which the levels at 92.5% of the noise monitoring sites were over the national standard. The incidence of high frequency hearing loss （HFHL） was 24.43% and language frequency hearing impairment （LFHI） was 0.81%. The incidence of hypertension was 7.93%. Both systolic blood pressure （SBP） and diastolic blood pressure （DBP） in the high frequency hearing loss group were significantly higher than those in the normal hearing group （P〈0.05）, while C1 （large artery compliance） and C2 （small artery compliance） were significantly lower （P〈0.05）. The high frequency hearing threshold （HFHT） of the hypertension group was significantly higher than in the normal blood pressure group （P〈0.05）, while C1 and C2 were significantly lower （P〈0.05）.C1 and C2 had a negative correlation with HFHT, SBP, DBP, mean of arterial pressure （MAP）, pulse pressure （PP） and pulse rate （PR） （P〈0.05）. The multiple regression analyses showed that blood pressure and PR were the main influencing factors on C1 and C2. LFHT was an influence on C2 and HFHT on C1. Conclusions Textile mill noise pollution is very serious and has an obvious influence on worker＇s auditory function. The female workers with low artery compliance or with high blood pressure might be suffering from Background There are few studies on the arterial compliance of noise exposure. The purpose of this study was to understand the relationship between hearing loss, blood pressure and arterial compliance of female workers who exposed to occupational noise in a textile mill. Methods The noise levels in the workplace were measured with a HS6288 sound level meter. Cumulated noise exposure （CNE） was calculated according to the noise intensity and the exposure period. Hearing ability and arterial compliance were measured in 618 noise exposed workers. The database was set up with EpiData and the statistical analysis was performed with SAS software 9.1.3. Results The noise levels were 80.1dB（A） to 113.5dB（A）, of which the levels at 92.5% of the noise monitoring sites were over the national standard. The incidence of high frequency hearing loss （HFHL） was 24.43% and language frequency hearing impairment （LFHI） was 0.81%. The incidence of hypertension was 7.93%. Both systolic blood pressure （SBP） and diastolic blood pressure （DBP） in the high frequency hearing loss group were significantly higher than those in the normal hearing group （P〈0.05）, while C1 （large artery compliance） and C2 （small artery compliance） were significantly lower （P〈0.05）. The high frequency hearing threshold （HFHT） of the hypertension group was significantly higher than in the normal blood pressure group （P〈0.05）, while C1 and C2 were significantly lower （P〈0.05）.C1 and C2 had a negative correlation with HFHT, SBP, DBP, mean of arterial pressure （MAP）, pulse pressure （PP） and pulse rate （PR） （P〈0.05）. The multiple regression analyses showed that blood pressure and PR were the main influencing factors on C1 and C2. LFHT was an influence on C2 and HFHT on C1. Conclusions Textile mill noise pollution is very serious and has an obvious influence on worker＇s auditory function. The female workers with low artery compliance or with high blood pressure might be suffering from

关 键 词：hearing loss arterial compliance noise exposure FEMALE TEXTILES 

分 类 号：R135.8[医药卫生—劳动卫生]