veoexrmpzt
Dołączył: 21 Lut 2011
Posty: 371
Przeczytał: 0 tematów
Ostrzeżeń: 0/5
Skąd: England
|
 Wysłany: Wto 15:24, 22 Mar 2011 Temat postu: tory burch shoes zvq vbm ands eer |
 |
|
Impulse noise of 62 cases of workers of the ECG
Chapter No. :1003-6245 (2008) 09-0713 O1 noise is a common occupational hazards,[link widoczny dla zalogowanych], the etiology of hearing loss caused by already clear. The report on the impact of autonomic nervous system is rare. In this paper, a factory press operator exposure to noise, ECG changes were analyzed and discussed. 1 Materials and methods 1.1 Site noise level measured by the results of 20 years,[link widoczny dla zalogowanych], mean, and its value is 97.5dB (A). 1.2 punch operator noise exposure group of 62 called to record indicators include gender, age and length of service, while 62 non-selection of workers exposed to noise as the control group, on their ECG at the same time. Automatic inspection equipment using 8110 ECG analyzer. 1.3 Statistical analysis using SPSS / PC + statistical package (Suzhou Medical College Department of Health Statistics provided),[link widoczny dla zalogowanych], non-conditional on the computer Logistic multiple regression analysis. Assignment for the analysis of the factors and methods (Table 1). Table 1 The results of variable assignment method 2 2.1 EKG results (Table 2). Table 2 ECG results 2.2Logistic first full multi-factor regression analysis to establish equations,[link widoczny dla zalogowanych], and then removed one by one were not significant factors, until the objective function. Gender, age and length of service, whether exposed to noise for Logistic multiple regression analysis,[link widoczny dla zalogowanych], the final variable entered the model only if a noise exposure, test of significance P <o. O1 (Table 3). Table 3Logistic 713 * multiple regression analysis of all factors were again the single factor Logistic regression analysis showed that, in addition to whether the exposure to noise factors, length of service and ECG abnormalities associated with significant, P <O. 05 (Table 4). Table 4 years of service with the ECG abnormality univariate Logistic regression analysis 3 Discussion 3.1 Influence of noise on the cardiovascular system, mainly as changes in blood pressure and heart rate has been reported as well as noise on the ECG T wave sT segment, making the segment and T sT wave abnormality rate increased J, and has simply repeating what level and length of service increases with the trend. 3.2 This paper studied the noise exposure group was exposed to impulse noise intensity average 97.5dB (A). ECG results of univariate and multivariate Logistic regression analysis showed that, if exposed to noise and the length of service on ECG has significant meaning. From the inspection results, except for some sT segment changes and sinus bradycardia, the ECG abnormalities to pre-main shock syndrome. That noise on the population have an impact on the cardiovascular system. The mechanism may be the noise of atrial and ventricular excitation pathways, causing changes in atrioventricular conduction. In conclusion, occupational exposure to noise intensity due to noise, large crowds, and long-term exposure. In addition to the impact of hearing loss, but on the cardiovascular system will be affected. Therefore, care should be strengthened in this area of work.
Post został pochwalony 0 razy
|
|
