Objective To investigate the risk factors and microbial causes related to the pathogenesis of ventilator-associated pneumonia(VAP).Methods Totaly 138 intubated newborn infants for longer than 48 hours in Ningbo Women and Children's Hospital were studied,who were divided into VAP group (56 cases)and non VAP group(82 cases).Microbial causes of VAP were analyzed.Results Malnutrition,repeated tracheal intubation,repeated endotracheal suctioning,indwelling tube,posture,hyaline membrane disease,gestational age,birth weight,duration of intubation,duration of hospitalization were independent risk factors for ventilator-associated pneumonia(P<0.05).Klebsiella pneumoniae,pseudomonas aeruginosa,acinetobacter species and enterobacter cloacae were the main pathogenic bacteria of VAP.Conclusion Shortening of mechanical ventilation duration,avoiding repeated tracheal intubation and indwelling tube usage,semi-fowler positioning can lower the incidence of VAP.Pathogenic bacteria control is essential for VAP.

Objective:To study the expression of discoidin domain receptor1(DDR1) protein in esophageal squamous cell carcinoma(ESCC) tissues. Methods:The expression of DDR1 protein was detected by Western blotting in 40 cases of ESCC tissues,para-cancer tissues,and matched esophageal normal tissues,and their relation to clinical pathologic characteristics of esophageal cancer was analyzed. Results:The expressionof DDR1 in ESCC(1.201?0.348)were significantly higher than those in para-cancer tissues(0.640?0.323)and normal esophageal tissues(0.551?0.413). The positive expression rate and relative content of DDR1 in ESCC were correlated with degrees of differentiation、lymphnode metastasis and invasion depth of carcinoma (P

OBJECTIVE:To improve HPLC for the contents determination of 2-methyl-5-methoxy-indole-3-acetic acid(impuri-ty Ⅰ) and 4-chlorobenzoic (impurity Ⅱ) in Indometacin enteric-coated tablet. METHODS:The column was Phenomenex Phe-nyl-Hexyl with mobile phase of 10 g/L acetic acid solution- acetonitrile(gradient elution)at a flow rate of 1.0 ml/min,the detec-tion wavelength was 254 nm,column temperature was 40℃,injection volume was 20 μl. RESULTS:The linear range was 0.262 2-5.243 0 μg/ml for impurity Ⅰ(r=0.999 8)and 0.252 5-5.050 0 μg/ml for impurity Ⅱ(r=0.999 8);the limits of quanti-tation were 1.12 ng and 0.48 ng,limits of detection were 0.340 ng and 0.146 ng,respectively;RSDs of precision,stability and re-producibility tests were lower than 2%;recoveries were 99.71%-100.52%(RSD=0.28%,n=9) and 100.84%-102.14%(RSD=0.47%,n=9). CONCLUSIONS:The method is accurate and rapid,and can be used for the contents determination of impurity Ⅰand impurityⅡin Indometacin enteric-coated tablet.

OBJECTIVE: To establish the HPLC method for the determination of spironolactone tablets. METHODS: The determination was performed on Agilent C18 column with mobile phase of acetonitrile-water (50 ∶ 50) and detection wavelength of 238 nm. RESULTS: The linear range of spironolactone were within 5.023 1 ?g?mL-1～75.347 1 ?g?mL-1 (r=1.000 0) with an average recovery of 100.23% (RSD=0.53%). CONCLUSION: The method is reproducible, simple and convenient for the quality control of spironolactone tablets.

Due to the increase in competitive sports and some other reasons, the influence of physical activity in some extent, appeal to the essence of life care from its ethical. Excessive instrumental performance for sports ac-tivities, utilitarianism, in some ways is not pure is the activity of fitness and it happened some alienation. There-fore, the relevant state departments and the whole society starting from the height of national strategy, deal with the relationship of sport and fitness sport, promote the development of undertakings of physical culture and sports, mak-ing the sports return to nature of life care.

Objective To analyze the clinical features of rheumatic diseases patients with Glucocorticoid (GC) induced osteoporotic fractures.Methods Fourteen patients with GC induced osteoporotic fractures in Beijing Children's Hospital from January 2005 to December 2012 were retrospectively analyzed.The clinical features,spine radiographs/CT,dose of GC were analyzed.Results In various rheumatic diseases,systemic lupus erythematosus (SLE) and systemic onset juvenile idiopathic arthritis (SoJIA) were the most common related diseases.All children had no obvious causes of fracture.Eleven patients had back pain or limitation of activity.Fourteen patients had vertebral fractures.Seven cases had thoracic vertebral fracture,3 cases had fractures of lumbar vertebra.Four cases had multiple painful vertebral fractures.The time of fracture occurrence in patients received glucocorticoid therapy were between 5 months and 6.5 years.Daily minimum dose of glucocorticoid was 0.25-1.12 mg/kg and mean dose was 0.47-2.62 mg/kg.Conclusion GC induced osteo-porotic fractures is a serious complication of long-term use of glucocorticoid.Physicians taking care of children who have received long-term glucocorticoid therapy should be alert of the manifestation of osteo-porosis,such as back pain.

Objective: To discuss the effect of metal materials science for how to prevent and control adverse events of medical devices, and provide forewarning measures for preventing this kind of events. Methods: To analyze the adverse events report of medical devices, and summarize 10 kinds of fault phenomenon and clinical manifestation of adverse events came from metal materials, such as respiration device and its accessories, color ultrasonic imaging device and ultrasound intervention, intracavity diagnosis and implants, and so on. To analyze the reason of the medical equipment accidents;and provide countermeasures for monitoring and management of adverse events of medical devices. Results: The advantages of preventing and controlling adverse events of medical equipment based on metal material science were:①monitor the metal material performance changes occur in force or strain and early alarming, ②identify implanted medical consumables degradation. Conclusion: The fatigue damages and defects of metal materials were the main reason of medical device adverse events. The hospital needs to establish the medical device adverse event reporting, evaluation model, evaluation and classification of time report supervision mechanism; establish and improve the monitoring and management mechanism, technical personnel and regulations; perfect the corresponding technical support system, and achieve monitoring and risk management for adverse events of clinical medical devices.

constrained plate group(P

Objective:To investigate the roles of vascular endothelial growth factor C(VEGF-C) and tumor infiltrating dendritic cells(TIDC) in invasion and metastasis of gastric cancer cells and to investigate the relationship between VEGF-C expression and TIDC infiltration in gastric cancer.Methods:Fifty-two patients,who were pathologically diagnosed with gastric carcinoma and received gastrectomy in the First Affiliated Hospital of Chongqing Medical University from 2004 to 2006,were enrolled in this study.The expression of VEGF-C and infiltration of dendritic cells were examined by immunohistochemical staining(S-ABC method),using anti-VEGF-C polyclonal antibody and anti-S-100 polyclonal antibody,and the relationship between them was investigated.Results:(1) In poorly differentiated and well/moderately differentiated cancer patients,the rates of positive of VEGF-C expression were 75.86% and 44.23%,respectively(P 0.05);the rates of serosa invasion in the high density group and low density TIDC patients were 36.36% and 70%,respectively(P

0.05).Conclusions Both GH and GHF,gelatin hydrolysates with various molecular weights,can stimulate rat dermis fibroblasts proliferation,and the latter can meanwhile increase type Ⅰ collagen secretion.