Objective To fully realize laboratory information sharing, giving full play of automation and intellectualization of laboratory devices and improving the management level and work efficiency. Methods A new network architecture method was adopted. The laboratory devices were connected by joining TS into the master network. A computer installing interface management program was used as device server. All laboratory instruments were managed by the interface management program. Results The new LIS realized the total inosculation of LIS and HIS and the connection method of different communication modes on many serial communication devices. Conclusion The method strengthens the system's network integration. The maintenance costs and PC resources are saved.

Objective To build high availability cluster using VMware to improve availability of hospital information system.Methods Virtual machines were installed in VMware server to act as backup servers.High availability software continuously detected status of physical servers using heartbeat signals.Results When physical servers failed,high availability cluster switched services automatically.The business switched to virtual machine quickly and smoothly.Conclusion High availability cluster based on VMware can improve HIS availability and lower implementation costs effectively.

Objective To design a data management solution based on geographic information system for health service units to deal with health resources of subordinate medical institutions.Methods The whole solution was developed with layer logic function of data service, application and presentation. Storage, transformation and relationship of both spatial data and health service data were totally managed by relational database.Results The system was able to import, export, maintain, sum, query and analyze geography spatial information and health service information.Conclusion A new method is provided to improve capability of health support and health service management efficiency.

Objective: To establish an LC-MS/MS method for the determination of 4-( 4-amino-3-fluorophenoxy )-N-methylpyri-dine-2-carboxamide ( AFP-PMA) as a genotoxic impurity in regorafenib. Methods: The content of AFP-PMA was determined by an LC-MS/MS method. A Waters XBridge Shield RP18 column was adopted to separate the samples and the column temperature was 50℃. The mobile phase consisted of 5 mmol·L-1ammonium acetate aqueous (A)-acetonitrile (B) with gradient elution (0~9 min, 5%B→90%B) at a flow rate of 1. 0 ml·min-1. An electrospray ionization source (ESI) was used in a positive-ion and multiple reactions monitoring mode. The ion channel was m/z 262. 2→244. 1. Results:The standard curve was linear within the range of 2. 41-980. 90 ng·ml-1(r=0. 9998) and the limit of quantification was 8. 02 ng·ml-1. The limit of detection was 2. 41 ng·ml-1, which was e-quivalent to 0.000241% for the concentration of regorafenib. The average recovery was 100.95% and RSD was 2.37% (n=9). Conclusion:The method has good specificity, promising accuracy and high sensitivity, which can be used for determining the trace genotoxic impurity AFP-PMA in regorafenib.

Objective:To prepare 2 composites using different proportions of hydroxyapatite and collagen and to assess their structural and biological properties, so as to pave a way for preparing tissue engineering chest wall scaffold.Methods: Two kinds of hydroxyapatite/collagen composites were prepared according to the weight ratios of 11 and 12; collagen sponge served as control. Then the structures of the 2 composites and the collagen sponge were observed under SEM. In vivo study was conducted to assess the biocompatibility and biodegradation of the composites by gross inspection and histological examination. Results: The collagen sponge had a 3-D network structure with fluey collagen fibers and poor mechanical strength, and its structure was damaged within 2 weeks after implantation and was completely absorbed 4 weeks later. The hydroxyapatite and collagen were well mixed in the composite with a hydroxyapatite to collagen ratio of 12; the composite had homogeneous 3-D porous structure (size of the pore being 100-400 m) and showed good biocompatibility: maintained its porous structure 4 weeks after implantation and was absorbed within 8 weeks. In composite with hydroxyapatite to collagen ratio of 11, the hydroxyapatite particles were separated from collagen fiber and conglomerated into masses, and the composite resulted in severe tissue reaction after implantation.Conclusion: When mixed with a reasonable proportion of hydroxyapatite, the collagen sponge has improved structure, biodegradable performance, and biocompatibility; the composite may be a novel scaffold for tissue engineering chest wall reconstruction.

Objective To build an architecture for medical information integration based on SOA(Service-Oriented Architecture)by analyzing the characters of medical information integration and the integration technology of SOA. Methods Virtual database was built by XML Schema mapping for conform share of medical data based on XML technology. The method and principle of Web Services for medical information were researched and built. Results Medical information systems could uniformly exchange information based on standards of Web Services, and the conform medical information share mode was realized. Conclusion The integration of medical information systems based on SOA not only has the characteristics of loose-coupling and customization agility but also makes information share possible because of conform mode.

Objective To apply the techniques of network isolation and secure data exchange network to hospital information system.Methods Network isolation and secure data exchange were used to do data exchange and synchronization between two networks.Results A LIS result query system was designed and realized based on this technology.Conclusion Secure data exchange in HIS can be realized effectively by using the techniques of network isolation and secure data exchange and it has good foreground in hospital information system.[Chinese Medical Equipment Journal,2008,29(2):45-47]

Objective:To evaluate whether off pump coronary artery bypass grafting (OPCABG) has advantages over conventional coronary artery bypass grafting(CCABG). Methods:A total of 362 patients undergoing coronary artery bypass grafting were divided into 2 groups: OPCABG group:152 cases undergoing OPCABG and beating heart via sternotomy; CCABG group,210 cases undergoing CCABG with extracorporeal circulation. Preoperative and postoperative variables of 2 groups were compared. Results:There were no significant differences in sex, age, weight, acute or remote myocardium infarction, hypertension, diabetes and type of bypass grafts between 2 groups.The numbers of bridge vessels were not significantly different between the 2 groups; the incidences of low cardiac output syndrome, atrial fibrillation and atelectasis in OPCABG group were significantly less than those of CCABG group( P

Objective:To evaluate the therapeutic effectiveness of peritoneal dialysis(PD) for acute renal failure(ARF) following cardiac surgery with cardiopulmonary bypass and its effect on hemodynamics. Methods:Retrospective data from 88 patients with ARF following cardiac surgery undergoing PD were analyzed. Results:The renal function of the patients recovered within 3 to 39 d of PD, K +] declined to normal level within 1 d, HCO 3 -] declined to normal level within 1 4 d, and BUN and Cr declined by 49.2% and 42.6% respectively within 4 6 d of PD( P

OBJECTIVE: To observe the effects of Xuefu Zhuyu Capsule (XFZYC), a compound traditional Chinese herbal medicine, on endothelin-1 (ET-1) release in myocardium and vascular endothelium and nitric oxide (NO)/nitric oxide synthase (NOS) system of swines after acute myocardial infarction (AMI) and reperfusion, and to explore the action mechanisms of XFZYC in improving the endothelium function. METHODS: Forty-five Yorkshire swines were randomized into 3 groups: sham-operated group, untreated group and XFZYC-treated group. A Yorkshire swine model of reperfusion in AMI was established by ligation of left anterior descending coronary artery for 90 min followed by 2 h relaxation. The content of serum ET-1 and NO was measured by radioimmunoassay before and after AMI and after reperfusion, respectively. Twenty-four hours after operation, all Yorkshire swines underwent diagnostic coronary angiography to delineate coronary arteries. The expressions of ET-1 and endothelial nitric oxide synthase (eNOS) in myocardial tissue of ischemic area were quantified with Western blotting. Microvessel density of the implanting sites was assessed by using HE staining. RESULTS: Compared with the untreated group, the levels of serum ET-1 after AMI and reperfusion were significantly decreased in XFZYC-treated group (P<0.01), while the NO levels after AMI and reperfusion in XFZYC-treated group were significantly increased (P<0.01). There was no significant difference in diagnostic coronary angiography between XFZYC-treated group and untreated group (P=0.253). Western blotting showed that the level of ET-1 in ischemic area in XFZYC-treated group was lower than that in the untreated group (P<0.01), while the eNOS protein expression in XFZYC-treated group was higher than that in the untreated group (P<0.01). The results of HE staining and microvessel density analysis of the implanting sites all showed that the degree of telangiectasis was reduced, the cardiac muscle damage was improved, and the density of capillaries was increased obviously in XFZYC-treated group as compared with the untreated group. CONCLUSION: The endothelium injury may be one of the important mechanisms for no-reflow phenomenon. XFZYC may reduce the no-reflow by protecting endothelium cells.