Objective To investigate healthcare-associated infection(HAI)prevalence and antimicrobial use in a hospital.Methods HAI prevalence rate,antimicrobial use and pathogen detection in all inpatients on August 21 , 2013 were investigated with cross-sectional survey method.Results A total of 2 238 inpatients were investigated, 104 patients developed 126 times of HAI,HAI prevalence rate and case rate was 4.65% and 5.63% respectively;the top four sites for HAI were lower respiratory tract (28.57%),upper respiratory tract(18.25%),urinary tract (7.94%)and gastrointestinal tract(4.76%).Rate of specimens delivered for detection was 91 .35%(95/104),the main specimen was sputum (26.32%),followed by blood (25.26%)and urine (10.53%).Antimicrobial usage rate was 24.58%,therapeutic,prophylactic plus therapeutic,and prophylactic use accounted for 36.55%,45.09%, and 18.36% respectively;the usage rate of single,combination of 2,and 3 antimicrobial agents accounted for 75.82%,20.91 % and 3.27% respectively.Risk factors of HAI were age (<15 or >60 years),all kinds of inva-sive procedures (tracheotomy,mechanical ventilation,urinary catheterization,arteriovenous intubation,hemodialy-sis),and anti-tumor chemotherapy.Conclusion Survey on HIA prevalence helps to know the occurrence of HAI and usage of antimicrobial agents,as well as risk factors and high-risk departments of the occurrence of HAI,it also provides basis for subsequent targeted monitor on HAI.

Objective To detect bacterial content on surface of mobile phones of health care workers (HCWs)by adenosine triphosphate (ATP )bioluminescence assay.Methods HCWs in departments of internal medicine,surgery, medical laboratory,and administration were randomly selected,50 in each department,field detection on bacterial content on surface of mobile phones of HCWs was conducted,the relevant data were recorded.Results A total of 200 mobile phones were detected,33 mobile phone surface were qualified,the qualified rate was 16.50%.Qualified rate of mobile phone surface of HCWs in different departments as well as mobile phone disinfected by different modes were different(χ2 =13.46,10.24,respectively,both P <0.01);difference in qualified rate of mobile phones of different types,different service life,and different protective case were all not significant (χ2 =4.37,1 .87,0.25 respectively,all P >0.05).Conclusion The qualified rate of bacterial content on surface of HCWs’mobile phone is low,the awareness of hand hygiene of HCWs should be strengthened,regular cleaning and disinfection on the mo-bile phone can effectively reduce bacteria on the mobile phone surface.

Objective:To understand general hospital medical staff status quo and characteristics of blood -borne occupational exposure , analysis its ethics factor , to make the prevention countermeasures of blood -borne oc-cupational exposure to provide scientific basis .Methods:From January 2013 to December floor all the medical staff of blood -borne occupational exposure cases were retrospectively analyzed .Results:A total of 101 medical staff blood-borne occupational exposure , which is given priority to with the nurse , accounted for 60 .40%;More con-centrated in under 30 employees, accounted for 70.29%;Occupational exposure personnel distribution in the ma-jority with surgical department (42.57%), followed by the physician (36.63%);Wards (60.40%), the operat-ing room (15.84%) and therapy (11.88%) are the sites of occupational exposure often happen;Sharp injury in the composition of the ratio of 87.12%, in the first place, in which a proportion (23.76%), pull out the needle (18.81%) and blood (15.84%), surgical suture (14.85%) and transfusion injection (13.86%) as the sharp injury of frequent occurrence of occupational exposure;Exposure is given priority to with hepatitis b ( 61 .38%) . Conclusion:Medical staff blood-borne occupational exposure risk is high , the hospital infection control personnel must pay attention to occupational exposure of the whole education , strengthen the administration of the occupation-al exposure of ethics , reduce the risk of occupational exposure and injury .

Objective To establish the m ethod to analyze γ-hydroxybutyric acid (GHB ) and its precursors 1,4-butanediol (1,4-B D ) and gam m a-butyrolactone (GBL) in urine through LC-M S/M S and provide evi-dence for related cases. Methods GHB-d6 and M O R-d3 were used as the internal standard. The urine sam ple w as separated by LC after protein precipitation w ith m ethanol. The electrospray ion source w as for ionization. E ach com pound w as detected through m ultiple-reaction m onitoring (M R M ) m ode. Results The lim its of detection of GHB and its precursors 1,4-B D and GBLwere 0.1, 0.1 and 2μg/m L. The accuracy w as 87.6% -98.1% . The intra-day and inter-day precisions were less than 15% and m atrix ef-fects were higher than 80% . Conclusion The m ethod is high sensitive, sim ple, rapid, specific and w ith high reliability. This study has provided technical support and basic data for forensic cases involving GHB .

Objective T o analyse the m etabolic changes in urine of rats w ith brodifacoum intoxication, and to reveal the m olecular m echanism of brodifacoum-induced toxicity on rats. Methods B y establish-ing a brodifacoum poisoning rats m odel, the urine m etabolic profiling data of rats w ere acquired using high performance liquid chromatography-timeofflightmassspectrometry (HPLC-TOF-M S).The orthogo-nal partial least squares analysis-discrim ination analysis (O PLS-D A ) w as applied for the m ultivariate statistics and the discovery of differential m etabolites closely related to toxicity of brodifacoum . Results O PLS-D A score plot show ed that the urinary m etabolic at different tim e points before and after drug adm inistration had good sim ilarity w ithin tim e period and presented clustering phenom enon. C om paring the urine sam ples of rats before drug adm inistration w ith w hich after drug adm inistration, tw enty-tw o m etabolites related to brodifacoum-induced toxicity w ere selected. Conclusion T he toxic effect of brodi-facoum w orked by disturbing the m etabolic pathw ays in rats such as tricarboxylic cycle, glycolysis, sphin-golipid m etabolism and tryptophan m etabolism , and the toxicity of brodifacoum is characterized of accu-m ulation effect. The m etabonom ic m ethod based on urine H PLC-TO F-M S can provide a novel insight into the study on m olecular m echanism of brodifacoum-induced toxicity.

Objective T o establish a gas chrom atography-m ass spectrom etry (G C-M S ) m ethod for the determ ination of sulfide ion in blood and apply it to the practical cases. Methods T he 1, 3, 5-tribro-m obenzene w as selected as an internal standard, and 0.2 m L blood sam ple w as collected and analyzed using G C-M S after α-B rom o-2, 3, 4, 5, 6-pentafluorobenzyl brom ide derivatization. Results T he m ass concentration of sulfide ion in blood had good linearity in the range of 0.2-40μg/m L w ith a lim it of detection (L O D ) of 0.05μg/m L . T he m ass concentration of sulfide ion w as less than 0.05μg/m L in blank blood from different sources such as healthy subjects and dead cases. In 3 sulfide poisoning cases, sul-fide ion w as detected in the blood sam ples of 6 victim s, and the m ass concentration range w as 1.02-3.13μg/m L . Conclusion T his study establishes a m ethod for investigation of sulfide ion in blood w hich has been applied successfully to the cases of fatal sulfide poisonings.

Objective To investigate survivin as an anticancer therapeutic target by use of shepherdin [79-87],a novel peptide carrying the survivin sequence from Lys-79 through Leu-87,we constructed an recombinant vector containing fusion gene NT4-Ant-Shepherdin [79-87].Methods The gene of Ant-Shepherdin [79-87] was obtained by PCR and T-vector method.After cloned and digested with restricted enzyme,Ant-shepherdin [79-87] was inserted in PBV220NT4 vector.The recombinant vector was transformed into the competent cell,E.coli DH5?.The fusion gene of NT4-Ant-Shepherdin [79-87] was identified by agarose gel electrophoresis (AGE).Results DNA sequencing results verified that the sequence of Ant-Shepherdin [79-87] was consistent with what we had designed.After transformed E.coli DH5?,a fragment of 321 bp was confirmed.Conclusion The recombinant vector containing fusion gene NT4-Ant-Shepherdin [79-87] was successfully constructed in this experiment by molecular biology techniques,which provides the basis of further research of survivin for cancer gene therapy.

ObjectiveTo establish a method for content determination of total iridoid compounds and baldrinal and 11-ethoxyviburtinal from Valerianae Jatamansi Rhizoma et Radix; To determine the contents of total iridoid compounds and baldrinal and 11-ethoxyviburtinal in Valerianae Jatamansi Rhizoma et Radix from three medicinal origins.Methods UV spectrophotometry was applied, 11-ethoxyviburtinal (cyclopentane-pyran-7-formaldehyde, 4-ethoxy methyl) was set as the reference substance, and the content of total iridoid compounds was determined at 288 nm. HPLC method was used to simultaneously determine the contents of baldrinal and 11-ethoxyviburtinal. The HPLC analysis was performed on a Phenomenex Luna C18 column (250 mm×4.6 mm, 5μm). The mobile phase was composed of acetonitrile-water in gradient elution at a flow rate of 0.95 mL/min. The detection wavelength was 288 nm and the column temperature was 30℃.Results The total iridoid compounds, baldrinal and 11-ethoxyviburtinal were in good linearity within the ranges of 2.088–14.616μg/μL, 74.88–224.64μg, and 41.6–249.6μg, respectively. This method was precise, and with good repeatability, stability and recovery rate.Conclusion The method is accurate, simple, rapid, which can be used for the quality control of Valerianae Jatamansi Rhizoma et Radix.

Objective To observe the changes in transfer rates of epigoitrin, forsythoside A and forsythin in Ganmao Tuire Granules prescription medicinal materials by water decoction extraction, vacuum concentration and atmospheric concentration.Methods Prescription medicinal materials fromGanmao Tuire Granules were decocted in water and the decoction was condensed by vacuum and atmospheric concentration process. The contents of epigoitrin, forsythoside A and forsythin at different states were measured by HPLC for transfer rates.Results The transfer rates of epigoitrin, forsythoside A and forsythin were 72.97%, 29.27%, 72.84%, respectively after decocted in water. The RSD of epigoitrin, forsythoside A and forsythin were less than 2% in the process of vacuum concentration. The transfer rates of epigoitrin, forsythoside A and forsythin by atmospheric concentration decreased by 13.51%, 7.38% and 4.24% respectively compared with vacuum concentration when concentrated to the same state.Conclusion The method for simultaneous determination of epigoitrin, forsythoside A and forsythin by HPLC has been established. A more suitable extraction and concentration process should be chosen for the preparation ofGanmao Tuire Granules.

Objective To investigate cognitive status and influencing factors for hand hygiene(HH)among health care workers(HCWs),and provide basis for scientific management of HH.Methods In April 2013,HCWs in a general hospital were selected by randomly sampling method,questionnaires were used to survey the implementation of HH in recent one month and HCWs’cognition on knowledge about HH.Results A total of 750 HCWs were in-vestigated,652 available questionnaires were collected.The frequency of hand washing and hand disinfection per day among most HCWs were 10 - 19 times,accounting for 46.62% and 47.85% respectively;30.52% of HCWs washed their hands for ≥30 seconds each time,60.58% of HCWs dried hands with paper towel after washing hands,57.21 % of HCWs abided by six-step hand washing method.The overall correct rate of cognition on ten op-portunities that requiring HH in clinical practice was 68.68%.The main factors influencing the implementation of HH were as follows:skin irritation of hand sanitizer and hand disinfectant subjectively considered by HCWs (63.34%),inadequate hand washing facilities(41 .10%);high cost of hand sanitizer ,hand disinfectant,and dry paper towel (38.96%),et al.Conclusion In addition to intensifying education on HH,installing rational HH facili-ties and improving HH standard are key points in strengthening HH in general hospital.