Objective To explore a management strategy for disinfection supply in hospital. Methods A PDCA (plan, do, check, and action) model was applied to establish a manngement strategy for the disinfection supply, strengthen the education among all staff, promote the competence level of disin-fection supply center, organize joint inspection group for regular union supervision, give feedback promptly and implement strictly. Results By applying the PDCA model, the staff in the disinfection supply center strengthened the consciousness in standard cleanness, disinfection and sterilization, the number of pack-ages prepared by clinic room was reduced, and the supply of sterilized materials were more centralized. Conclusion The management strategy based on PDCA model of disinfection supply in hospital is effec-tive.

Objective: To strengthen the immunogenicity of hepatocarcinoma cells and activate immnological cells recognizing and killing the tumor cells.Methods:The murine MHC-I gene H-2Kb which can express immunologial rejection antigens was transfected into human hepatocarcinoma cells HepG2 by liposome DNA mediated gene gene transfer.The transfection of H-2Kb gene were detected by molecular hybridization techniues.The exogeous antigens expressed on the membrane of trans- fected tumor cells were detected with ABC immunohistochemical method and flow cytometer. [3H] release assays were used to detect the recognizing and killing effects of lymphocytes to HepG2 cells transferred with murine H-2Kb gene. The nude mice ex- periment was used to further verify CTL cells killing active.Results:Southern blot hybridization showed that the H-2Kb gene was integrated into the chromosome of HepG2 cells. The RNA dot blot hybridization showed that there was transcription of H-2Kb DNA in the transfected tumor cells.ABC immunohistochemical method and flow cytometer detection showed that the murine H-2Kb antigens were expressed on the membrane of HepG2 cells. [3H] release assays showed that the cytotoalcyty to HepG2 cells fected with H-2Kb gene was obviously higher than that to control cells.The results demonstrated that the growth of hepatocarcino- ma cells which were transferred with H-2Kb gene was obviously inhibited.Conclusion:The murine MHC-I gene H-2Kb could be transferred into the human hepatocinoma cells and expressed on the membrane of transferred cells.The HepG2 cells transferred with H-2Kb gene could induce human effective lymphocytes to recognize and kill these transferred tumor cells.

Objective This study compared the cleaning effect of gastroscope by different cleaning mehtods and discuss practical and reliable evaluation method for the cleaning degree of gastroscope.Methods Three cleaning methods were selected and used in the cleaning of gastroscope.The Endocheck lumen was used to examine the cleaning degree of gastroscope and the effects of different methods were compared. Results The qualification rate by using ordinary cleaning method was 50.0%and it reached 60.0%and 73.3%by elevation of polyenzyme concentration and adding bedside pre-washing.which Was statistically different from that by using ordinary cleaning method(P＜0.05).Conclusions Bedside pre-washing could increase the cleaning degree of gastroscope;Endocheck lumen could be regarded as an evaluation method for the cleaning degree of gastroscope.

Objective To explore the effect of comprehensive intervention measure on antimicrobial use and incidence of healthcare-associated infection(HAI)in patients in sports medicine department.Methods Antimicrobial use and incidence of HAI in hospitalized patients in the surgical departments (sports medicine department and other surgical departments)of a hospital between January 2006 and December 2010 were analyzed retrospectively(before intervention),from January 2011, comprehensive intervention based on clinical-centered multi-department cooperation was adopted by sports medicine depart-ment,the other surgical departments over the same period were not comprehensively intervened;antimicrobial use and inci-dence of HAI in patients in surgical departments between January 2012 and December 2013 were monitored prospectively (after intervention ),effectiveness of intervention was evaluated.Results Antimicrobial use and incidence of HAI in pa-tients in sports medicine department after intervention were both lower than before intervention (55.75% vs 95.26%,χ2=753.42;0.10% vs 0.32% ,χ2 =15.13,both P <0.01).Antimicrobial use in patients in other surgical departments after intervention was lower than that before intervention(65.63% vs 73.79% ,χ2 =251.57,P <0.01 );incidence of HAI was higher than that before intervention(0.55% vs 0.42% ,χ2 =19.04,P <0.01).Conclusion Comprehensive in-tervention measure based on clinical-centered multi-department cooperation is safe and effective,it can reduce antimicrobial use and incidence of HAI in patients in sports medicine department.

OBJECTIVE To understand the situation of the nosocomial infection among the hospital inpatients in a grade-A hospital in Beijing.METHODS Surveillance on nosocomial infection was performed among the hospital inpatients from Jan 2005 to Dec 2007.RESULTS From Sept 2006 to Aug 2007,803 cases were infected,the incidence was 1.99%.The lower respiratory tract ranked the first place(38.97%)and the highest infected rate was in ICU(16.16%).The species were predominated by Gram-negatives.The main pathogenic microorganisms were Pseudomonas aeruginosa,Staphylococcus aureus,Escherichia coli,Acinetobacter baumannii,Klebsiella pneumoniae and Candida albicans,etc.From 2005 to 2007,the infections caused by P.aeruginosa increased gradually,and the infections caused by C.albicans reduced gradually.CONCLUSIONS Many people should work to prevent and control the infections in hospital,such as doctors,nurses,inpatients,management workers,etc.

OBJECTIVE To investigate a case of nosocomial infection incident in a hospital,analyze the reasons and put forward preventive measures.METHODS Investigation was carried out on the related people and environment in the department where the incident occurred.Analysis was made on the reasons and processing.RESULTS The nosocomial infection incident was caused by Norovirus;fecal-oral transmission and contact transmission were 2 main pathways of Norovirus.There were 7 persons who had been contaminated by Norovirus,included 5 old inpatients,1 doctor and 1 nurse.CONCLUSIONS Many people should work to prevent and control the infections in hospital,such as doctors,nurses,inpatients,hospital works etc.Hand-washing and disinfection isolation should be enhanced among the hospital staffs in the normal works.

Objective To understand the cleanliness of hands and uniforms of health care workers(HCWs)while they were working in a hospital.Methods Specimens of hands and uniforms of HCWs while they were working were collected and detected.Results A total of 342 specimens were collected, 173 were specimens from hands and 169 were from uniforms, the total qualified rate was 78.65%,qualified rates of hands and uniforms were 76.30% and 81.07% respectively.Qualified rates of hands and uniforms of different HCWs were compared respectively, differences were both statistically significant (both P<0.05);qualified rates of hands and uniforms of nurses were both highest (87.93% and 92.86% respectively), followed by doctors (75.86% and 87.72% respectively), while medical auxiliary persons were the lowest(64.91% and 62.50% respectively).Correlation analysis between qualified rates of hands and uniforms of HCWs in general wards showed that the correlation coefficient was 0.930 (P<0.01).Conclusion Cleanliness of hands and uniforms of HCWs needs to be further improved, especially medical auxiliary persons;cleaning frequency and cleanliness standard of HCWs' uniforms needed to be studied further.

Ventilator related events is a new concept proposed by the America Center for Disease Control and Prevention of the United States. Compared with ventilator-associated pneumonia, ventilator related events has objectivity in diagnosis. In 2013, the National Health Safety Network replaced ventilator-associated pneumonia monitoring in adult inpatients with ventilator-associated event monitoring. This review mainly introduces the concept of ventilator-related events, the evaluation of the relationship between ventilator-related events and respiratory pneumonia, the monitoring situation at home and abroad, and the related factors of ventilator-related events, so as to lay a foundation for the further study in the future.

AIM:To investigate the effects of resveratrol ( Res) on the proliferation of ARPE-19 cells and to ex-plore the possible mechanisms.METHODS:After ARPE-19 cells were treated with Res at concentrations of 0, 50, 100, 150, 200 and 300 μmol/L for 24 h, 48 h and 72 h, the effects of Res on the proliferation of the cells were tested by CCK-8 assay.The ARPE-19 cells were treated with Res at concentrations of 0, 100, 150 and 200 μmol/L for 48 h.The effects of Res on the cell cycle and apoptosis were detected by flow cytometry with Annexin V-FITC/PI staining.The protein expression of proliferating cell nuclear antigen (PCNA) was detected by immunofluorescent assay.The mRNA expression of PCNA, P21 and P27 was determined by real-time PCR.RESULTS:The results of CCK-8 assay showed that Res inhibited the prolifera-tion of ARPE-19 cells in a time-and dose-dependent manner.The treatment with Res for 48 h resulted in an arrest of cell cycle at S phase without increasing cell apoptosis.Res inhibited the protein expression of PCNA in ARPE-19 cells.The re-sults of real-time PCR showed that Res increased the mRNA expression of P21 and P27, and decreased the mRNA expres-sion of PCNA.CONCLUSION: Res inhibits the proliferation of ARPE-19 cells and induces the cell cycle arrest at S phase.The mechanism may be related to up-regulation of P21 and P27, and down-regulation of PCNA.

BACKGROUND:Spinal canal decompression is needed in posterior pedicle screw fixation surgery for thoracolumbar burst fractures combine with spinal cord injury. The structure of posterior spine is often damaged. The posterolateral bone fusion in al fixed segment is stil the main surgery. In order to further reduce fusion segment and maintain motor unit, it is necessary to perform selective segmental bone graft fusion during fixation and decompression.
OBJECTIVE: To discuss the advantages of selective posterolateral vertebral fusion for thoracolumbar fracture with spinal injury through comparing with posterolateral vertebral fusion.
METHODS: Data of 83 thoracolumbar burst fracture cases, who received posterior lumbar decompression and short segment fixation with pedicle screws and bone graft through injured vertebra from January 2006 to July 2013, were analyzed retrospectively. According to fusion segments, above patients were divided into selective posterolateral vertebral fusion group (n=42) and the whole posterolateral vertebral fusion group (n=41). Perioperative index, internal fixation, vertebral height loss rate, Cobb angle, spinal nerve recovery and Oswestry Disability Index were compared between the two groups.
RESULTS AND CONCLUSION:(1) Al cases were folowed up for 25-32 months. (2) There was no statistical significance in operation time, intraoperative blood loss and ambulation time between the two groups (P > 0.05). Postoperative drainage volume was less in the selective posterolateral vertebral fusion group than in the whole posterolateral vertebral fusion group (P < 0.05). Before removal of fixator, there was no loosened fixator or breakage of screw or stick. (3) There were improvements in the rate of vertebral front height loss and Cobb angle in both groups at various time points after operation (P < 0.05). There was no statistical significance in the rate of vertebral front height loss and Cobb angle in both groups (P > 0.05). (4) There was no significant difference in fusion rate at 6 months after treatment between the two groups (P > 0.05). Fusion was achieved in both groups before removal of the fixator. (5) Spinal nerve recovery was found after treatment in both groups. No significant difference in Oswestry Disability Index was detected in final folow-up (P > 0.05). (6) Results verified that compared with the whole posterolateral vertebral fusion, selective posterolateral vertebral fusion can obtain a good vertebral height and prevent Cobb angle loss again, reduce the internal fixation loosening and breakage. After removal of the fixator, selective posterolateral vertebral fusion can reduce spinal motion unit lost, and decrease the adjacent vertebral degeneration.