OBJECTIVE To strengthen occupational safety and health(OSH) management of medical service. METHODS To analyze actuality of OSH management and internal and international laws and regulations for OSH management,and give the proposition of its construction. RESULTS On the basis of the requirement,a set of OSH management scheme was established. CONCLUSIONS It is imperative that construct occupational safety and health management laws and regulations and system in medical service.They are pacing factors for physical and mental health of medical members.

OBJECTIVE To select applicable air disinfectors that can be used at indoor dynamic state to disinfect air in hospital.METHODS Some different air disinfectors were installed different volumetric rooms.To detect indoor air bacterial content before and after running the air disinfectors at quiet state and dynamic state.To evaluate the disinfection effect of these air disinfectors according to the eliminateion rates.RESULTS At quiet state,the indoor bacteria eliminateion rate exceed 90% after the air disinfectors running 0.5h.So the disinfection were qualified.At dynamic state,these air disinfectors showed good lasting disinfection effect.CONCLUSIONS The air disinfectors solve the problem of indoor air disinfection at dynamic state.It is imperative that select and use exactly the air(disinfectors) to get good disinfection effect.

OBJECTIVE To attend to the importance and issues of using the enzyme cleaner for the reprocessing of medical instrument. METHODS The principle, usage, precautions, and the selection of enzyme cleaner were analyzed. RESULTS The cleaning of the medical instrument must use the liquid enzyme detergent that has the following characters: clear solution, no or low foam, free rinsing, flexibilities to the water temperature, and no limitation to the water quality. CONCLUSIONS For successful cleaning of the medical instrument the use of the high-quality enzyme cleaner is required. A complete cleaning of the medical instrument is the first step to assure the quality of disinfection, sterilization, and the infection control.

Oral feeding of water cannot be accomplished in some critical patients due to coma, mouth-breathing or long-term indwelling of gastric tube, causing dry mouth which results in oral pain, ulcer, or infection, aggravating patients' discomfort and even affecting the prognosis. To solve this problem, the medical staff of the First Hospital of Jiaxing developed a novel oral humidifier and obtained the National Utility Model Patent of China (ZL 2019 2 0066979.0). The oral humidifier consists of a spraying device and a fixation device. The spraying device is a spraying housing with a water tank, and a spraying port where nanometer water mist can be emitted. The spraying housing is also equipped with a flashlight with a switch, and a schematic diagram of pupil size, which can be used to assess the pupil size conveniently. The fixing device is composed of a fixing frame, an adjustable rod and a clamp. The two ends of the adjustable rod are connected to the fixing frame and the clamp respectively, and can be adjusted to proper shape. The spraying housing can be placed on the fixing frame and installed on the bed and adjusted to the proper position quickly. This novel oral humidifier is a simple device which combines a spraying system with a pupil evaluation tool, implying significant clinical application in improving the convenience of nursing and alleviating dry mouth of critical patients.

Bacterial disinfectant resistance is the phenomenon that minimal inhibitory concentration or minimal bactericidal concentration of a certain disinfectant increases after a certain bacterium contacts with it many times. It exists widespread. Many species of bacteria are may resistant to a certain disinfectant, and a species of bacterium is may resistant to many disinfectant Disinfectant selectivity pressure is the extrinsic agent of bacterial disinfectant resistance. Resistance mechanisms include bacterial biochemistry structure, genetics pathway and enzymology pathway. There is relationship in disinfectant resistance and drug resistance. We should strengthen study and monitoring, enact unified standard and application specification to reduce bacterial disinfectant resistance.

Objective To investigate the significance of the expression of serum LDH and β2-MG in predicting survival of NHL patients and there correlations with clinical parameters. Methods The serum levels of LDH and β2-MG of 429 patients with NHL were measured by rate method and immunoturbidimetry.Besides,the clinical reference of the patients such as gender,age,B symptoms,clinical stages,extranodal sites and Karnofsky evaluation were summarized and grouped.All patients' survival status were achieved via phone and letter. All statistical analyses were performed using the SPSS program for Windows (version 16.0).Results The levels of LDH and β2-MG in age,B symptom,the advanced stage,extranodal sites≥2,Karnofsky evaluation were obviously higher than their counterpart and the difference was significant (P＜0.001). The median of LDH and β2-MG lever in age group was 229 U/L,190 U/L, 2.4 mg/L,1.7 mg/L. In B symptom was 260 U/L,192 U/L,2.3 mg/L, 1.7 mg/L. In clinical stage was 252 U/L, 175 U/L, 2.5 mg/L, 1.6 mg/L. In extranodal sites group was 278 U/L,195 U/L,2.4 mg/L,1.8 mg/L.In Karnofsky evaluation group was 250 mg/L,195 mg/L,2.2 mg/L,1.8 mg/L.LDH level of invasive lymphoma was significantly higher than that of indolent ones (median 211U/L,175 U/L,P=0.002),but there were no difference in the 32-MG level (P=0.937). There were no statistical significance about LDH and β2-MG levels in gender and cell type (P＞0.05).Overall survival rates were different between the abnormal LDH group and the normal LDH group (χ2=119.029, P＜0.001).Overall survival rates were different between the elevated β2-MG group and the normal β2-MG group (χ2 =104.733,P＜0.001).Overall survival rates of the abnormal LDH/β2-MG group was significantly lower than that of normal group (x2=192.326,P＜0.001).Multivariate analysis in Cox regression showed that LDH,β2-MG,age,clinical stages, extranodal sites, Karnmofsky evaluation and aggressive were independent prognostic factors.Conclusion The level of serum LDH and β2-MG can be taken as an auxiliary clinical index to evaluate the prognosis of the NHL patients.

OBJECTIVE To give experimental basis for further investigation on Staphylococcus epidermidis biofilm resistance,we investigated the erythromycin repression of the planktonic,resuspended and biofilm cells.METHODS log Reduction of the planktonic,resuspended and biofilm cells of S.epidermidis strain 1457 and wild isolate S 68 was tested under 100 MIC erythromycin.The cells inside biofilm were observed by transmission electron microscope.RESULTS log Reduction of the planktonic and resuspended cells of S.epidermidis 1457 were 5.56?0.11 and 5.28?0.08,respectively,after 4h under 100 MIC erythromycin,which was higher than that of biofilm cells(P0.05).The tendency of the log reduction of isolate S 68 was the same as that of strain 1457.The cells of biofilm without erythromycin were spherical and of even distributed,but the swelling,liquefied cells and cell debris were observed in the biofilm with erythromycin after 12h.The arrangement of cells inside biofilm with erythromycin was looser than that without erythromycin.CONCLUSIONS The erythromycin resistance of biofilm cells is higher.Biofilm can give protection for the bacteria to avoid the killing of action by antibiotics.

OBJECTIVE To confirm the clinical disinfection effect of acidity electrolyzed oxidizing water(AEOW).METHODS According to the standards of disinfection techniques supplied by Health Ministry of China,the disinfection effect of health care worker,object surfaces and medical apparatus and instrument were investigated.RESULTS The log reduction of the bacteria on the hands,object surfaces and medical instruments were more than 1.00.The number of the bacteria on the endoscopes were 0-2 CFU per piece on average.No pathogenic bacteria were detected out.The disinfection effect of each experimental group was qualified.CONCLUSIONS The field disinfection effect of AEOW is accepted.