2.Lead Contamination of Drinking Water Stagnated in Household Pipe
Changjun HU ; Yunxi CHEN ; Linqi NING
Journal of Environment and Health 1993;0(03):-
Objective To investigate lead pollution of drinking water stagnated in household pipe and its characteristic, and provide the scientific basis for safe and health consumption of drinking water. Methods 30 taps in households were randomly chosen as objects. According to the stagnated time the water samples were divided into group A (12-13 hours), group B (7-8 hours) and group C (3-4 hours). The samples were collected in 0 min, 1 min and 2 min after opening taps. Lead levels in the samples were determined by atomic absorption spectrometry (AAS), whose comparative analysis was performed by SPSS software. In total, 320 samples were analyzed. Results In group A, lead concentrations (geometric mean, the same for latter) of water samples in 0 min, 1 min and 2 min were 61.33, 12.27and 5.47 ?g/L respectively, but they were 33.90, 9.13 and 4.59 ?g/L in group B,and 11.37, 6.29 and 4.27 ?g/L in group C. There were significant differences among three groups (P
3.Effect of Liver-soothing and Spleen-strengthening Therapy on Gastric Emptying and Vasoactive Intestinal Peptide in Patients with Functional Dyspepsia
Xiaocong FU ; Ke HU ; Yunxi JI
Journal of Guangzhou University of Traditional Chinese Medicine 1999;0(02):-
0.05),but the clinical cure rate in group A was higher than that in group B(P0.05),but the clinical cure and markedly effective rate in group A was higher than that in group B(P0.05),but decreased in group A(P0.05).Conclusion Liver-soothing and spleen-strengthening therapy can improve the gastric emptying and regulate plasma VIP content in patients with dysmotility-like functional dyspepsia(D-FD).
4.The effect of X-ray radiography exposure intensity on image quality of the monitor
Yunxi CAO ; Huiqin HU ; Jianfeng QIU ; Lemin HE ; Fengtan HAN ; Xuean JING
Chinese Journal of Radiology 2008;42(10):1056-1058
Objective To explore the relationship between image quality and different exposure intensity of digital radiography(DR).Methods Using a contrast-detail phantom Cdrad 2.0,observers evaluated images on the monitots when exposure parameters were 90 kV and mAs ranged from 0.5 to 16.0 mAs.Then calculate image quality figure(IQF),and ANOVA was used to analyze the difference of IQF under different radiation dose in 8 subjects.Results (1)When exposure parameters were 90 kV and mAs altered from 0.5 to 8.0 mAs.the IQF observed on the monitor was reduced,and the minimal value was 38.54±2.82.When mAs changing from 8.0 to 16.0 mAs.IQF observed on the monitor was increased,and the maximum was 44.33±2.35.(2)Under the different exposure condition,the difference of IQF values were statistically significant(F=60.35,P<0.01).Conclusions With the increased exposure intensity,the image quality on monitor increased.When mAs was 8.0 mAs,image quality was the optimum When mAs was more than 8.0 mAs,the image quality on monitor reduced.
5.Effectiveness of multicenter intervention in hand hygiene compliance among health care workers in intensive care units
Liuyi LI ; Anhua WU ; Bijie HU ; Weiguang LI ; Tieying HOU ; Yunxi LIU ; Jianguo WEN ; Zhiyong ZONG ; Huai YANG ; Yun YANG ; Qun LU ; Xiuyue ZHANG
Chinese Journal of Infection Control 2015;(8):513-517
Objective To evaluate the effect of comprehensive intervention measures on improving hand hygiene (HH)compliance of health care workers(HCWs)in intensive care units (ICUs)by multicenter study.Methods A total of 47 hospitals in 12 provinces and cities were enrolled in the study,from October 2013 to September 2014, HH compliance among HCWs in ICUs was investigated according to World Health Organization HH investigation method,HH compliance rates before and after intervention were compared.Results HH compliance rate of HCWs in ICUs increased from 73.70%(11 155/15 135)before intervention to 78.70%(18 206/23 132)after intervention (χ2 =128.16,P <0.01);except northeast region ,HH compliance of HCWs in the other provinces increased signif-icantly after intervention(all P <0.05);among all departments,HH compliance of HCWs in general ICUs,respira-tory ICUs,emergency ICUs,and surgical ICUs increased significantly(all P <0.05);HH compliance of HCWs of all kinds of occupations increased significantly(all P <0.05);HH compliance rates before touching a patient,before clean/aseptic procedure,after touching a patient,and after touching patient surroundings increased significantly after intervention(all P <0.01 ).Conclusion Comprehensive interventions are helpful for improving HH compliance of HCWs in ICUs. Objective To evaluate the effect of comprehensive intervention measures on improving hand hygiene (HH)compliance of health care workers(HCWs)in intensive care units (ICUs)by multicenter study.Methods A total of 47 hospitals in 12 provinces and cities were enrolled in the study,from October 2013 to September 2014, HH compliance among HCWs in ICUs was investigated according to World Health Organization HH investigation method,HH compliance rates before and after intervention were compared.Results HH compliance rate of HCWs in ICUs increased from 73.70%(11 155/15 135)before intervention to 78.70%(18 206/23 132)after intervention (χ2 =128.16,P <0.01);except northeast region ,HH compliance of HCWs in the other provinces increased signif-icantly after intervention(all P <0.05);among all departments,HH compliance of HCWs in general ICUs,respira-tory ICUs,emergency ICUs,and surgical ICUs increased significantly(all P <0.05);HH compliance of HCWs of all kinds of occupations increased significantly(all P <0.05);HH compliance rates before touching a patient,before clean/aseptic procedure,after touching a patient,and after touching patient surroundings increased significantly after intervention(all P <0.01 ).Conclusion Comprehensive interventions are helpful for improving HH compliance of HCWs in ICUs.
6.Multicenter study on epidemiology of device-associated infection in neonatal intensive care units
Junhong REN ; Huan YIN ; Anhua WU ; Bijie HU ; Xiuyue ZHANG ; Tieying HOU ; Zhiyong ZONG ; Weiguang LI ; Huai YANG ; Yun YANG ; Yunxi LIU ; Jianguo WEN ; Qun LU ; Huixue JIA ; Liuyi LI
Chinese Journal of Infection Control 2015;(8):530-534
Objective To investigate the epidemiological characteristics of device-associated infection (DAI)in neonatal intensive care units(NICUs)of tertiary first-class hospitals in China,and provide scientific evidence for the prevention and control of neonatal DAI.Methods Neonates in NICUs at 17 hospitals of 9 provinces from October 2013 to September 2014 were selected for multicenter study,DAI was surveyed prospectively according to the uni-form diagnostic criteria and methods.Results A total of 12 998 neonates were monitored,the total patient-days were 126 125 d,13 cases of central line-associated bloodstream infection (CLABSI)and 70 cases of ventilator-asso-ciated pneumonia (VAP)occurred,central line utilization rate was 15.56%,incidence of CLABSI was 0.66/1 000 device-days;ventilator utilization rate was 7.67%,incidence of VAP was 7.23/1 000 device-days.Utilization rates of central line and respirator in neonates with body weight ≤ 1 000 g was the highest,which were 61 .06% and 29.91 % respectively;In NICUs with 20-30 beds,utilization rate of central line was the highest(16.67%),and res-pirator was the lowest(4.11 %);of hospitals in different regions,central line and respirator utilization rate in south-west China was the highest.Of different sizes of ICUs,VAP per 1 000 device-days was the lowest in NICUs with 20-30 beds(2.36 ‰).Difference in incidence of CLABSI and VAP per 1 000 device-days in neonates at NICUs of different regions were significantly different;incidence of CLABSI and VAP per 1 000 device-days was highest in southern China(2.68 ‰ and 31 .06‰ respectively),followed by southwest region.Of different quarters,incidence of CLABSI,and VAP per 1 000 device-days were not significantly different(all P >0.05).Conclusion Device utili-zation rate and incidence of DAI in China are both high,and are different in neonates of different birth weight,at different sizes of NICUs,as well as different regions,monitoring should be intensified,prevention and control measures should be implemented according to infection characteristics.
7.Related factors of troublemaking among patients with mental disorders caused by amphetamine-type stimulants
Guojian YAN ; Li PU ; Fugui JIANG ; Xuanyi HU ; Jialing LEI ; Yuesheng CAO ; Shunzhen ZHOU ; Hua REN ; Jiajia CHEN ; Shu WAN ; Yunxi LUO ; Langbin ZHOU ; Xufeng SONG ; Jun YANG ; Wei JI
Sichuan Mental Health 2021;34(4):341-344
ObjectiveTo explore the related factors of troublemaking behaviors among patients with mental disorders induced by amphetamine-type stimulants (ATS), and to provide references for the formulation of relevant intervention measures for ATS-induced mental disorders. MethodsA total of 105 patients who met the diagnostic criteria of International Classification of Diseases, tenth edition (ICD-10) for ATS-induced mental disorders were included, and classified into troublemaking group and non-troublemaking group. The general demographic data and clinical data of the selected individuals were collected, and all patients were assessed using Social Support Rating Scale (SSRS). Then univariate analysis and multivariate Logistic regression model were used to screen the related factors of troublemaking behaviors. ResultsThe scores of SSRS, objective support dimension and social support utilization dimension were significantly lower in troublemaking group than those in non-troublemaking group, with statistical differences [(24.10±6.59) vs. (28.94±5.59), t=3.364, P=0.001; (5.50±1.96) vs. (8.20±2.13), t=5.183, P<0.01; (4.60±2.26) vs. (6.28±1.90), t=3.435, P=0.001]. Multivariate Logistic regression analysis showed that male (OR=6.061, P=0.014) was a risk factor, while high social support level (OR=0.873, P=0.018) was the protective factor for troublemaking behaviors among patients with ATS-induced mental disorders. ConclusionPatients with ATS-induced mental disorders of the males and with low social support level are at high risk of troublemaking behaviors.