The problems in nursing postgraduate training in China are summarized,which include the ambiguity of subject orientation,absence of unified standard on training objective,imperfection of tutor team,uncertainty of research direction,lack of scientific research funds,etc.The countermeasures are then proposed,and the direction of nursing postgraduate education reform in China is discussed.

Objective To retrospec the efficacy of percutaneous nephrolithotomy on treatment of urinary tract stones in solitary kidney.Methods From June 2008 to April 2011,percutaneous nephrolithotomy technique was used to treat 20 cases of urinary tract stones,with kidney stone or cast form staghorn calculi in 4 cases,single pelvis,calyceal stones 10 cases,6 cases of upper ureteral calculi;Fourteen cases used the standard channel F24;6 cases used F16 Micro Channel.Among the 20 patients,16 cases performed stage Ⅰ single channel surgery;2 cases performed dual-channel surgery in Ⅰ stage;2 patients with severe infection performed stage Ⅱ single channel surgery.Results The average duration of the operation was 66mins.The stone clearance rate was 88.36％ on average(18/20),without laceration or bleeding of pelvis or renal calyces mucosa or any other complications.Postoperative indwelling nephrostomy tubes were removed 6 -7 days later,without complications found during the follow-up period.For the 6 cases with preoperative renal dysfunction before surgery,the levels of blood Cr decreased at 2 weeks after surgery.Conclusion Compared to open surgery,percutaneous nephrolithotomy is safe and effective with small wound in treatment of solitary kidney with invasive upper urinary tract calculi.

Objective To investigate the causes of postoperative severe infection and other complications of percutaneous nephrolithotomy,and to study the principles of prevention and treatment.Methods Five hundred and sixty three cases of patients underwent percutaneous nephrolithotomy from September 2008 to December 2011 in our hospital,after operation,22 patients were found with serious infection.Data of these 22 cases were analyzed retrospectively according to the causes of the infection,corresponding prevention and treatment.Results The occurrence rate of severe postoperative infection was 3.9％ ( 22/563 ) in this group.The condition of 21 patients improved through adjusting antibiotics and taking other necessary measures in time;the condition of 1 case of septic shock patient was under control by giving anti-infective and anti-shock treatment measures.Conclusion Percutaneous nephrolithotomy is a safe and effective minimally invasive surgery,with a certain incidence of postoperative infection which should be timely and effectively controlled.

Objective To design a new portable vital signs monitor for family use. Methods TMS320F2812, a kind of digital signal processor, was applied as the main processor to control the functional mod-ules including A/D convertor, LCD display. Bluetooth communication module was introduced to achieve real-time fast transfer of data between the system and the PC. Results Not only can the system monitor electrocardiogram (ECG), breath rate, pulse rate, body temperature and other vital signs accurately, but also it runs stably. Conclusion The features of DSP and Bluetooth were well combined in the design of the family-oriented, easy to use, multi-functional monitor with small size, low power consumption and convenience. A broad application and market prospects can be predicted.

The relationship between PGE2 and sIL-2R and ca rcinoma of large intestine and the development of its immunological study is de scribed briefly.

Objective To preliminary investigate and summarize the experiences of maintaining renal function and caring the cardio preoperative patients who have renal insufficiency (renal failure stage). Methods The treatment and cared for five cardio preoperative patients who had renal insufficiency were studied, those patients had been hospitalized in Peking University People′s Hospital for cardiac surgeries from June 2013 to January 2016. Results All the five patients had received preoperative renal maintenance, none of them got severe acute renal failure, and four of them had to get regular hem dialysis treatment after discharging. One of them died because of heart failure. Conclusions Renal insufficiency is a high risk for cardiac surgeries, however, it is not a contraindication for cardiac surgeries. Preoperative evaluation, preoperative caring and the application of CRRT can reduce the complications and improve the prognosis.

Objective To explore the effect of failure mode and effect analysis (FMEA) method in strengthening the management of critical value of blood specimens in hospital. Methods According to the procedures of FMEA, critical values management team were established, drew flow chart of generating test specimens and crisis value, explored the potential failure mode and failure cause, analyzed the severity, possibility and critical value, and formulate and implement countermeasures according to the research outcome. Results The crisis value of the failure mode fell from 1 320 to 151 after the implementation of FMEA, and rate of decline was 88.56%; number of unqualified blood samples decreased from 510 cases to 78 cases, and the difference is statistically significant (χ2=407.27, P<0.05);critical value processing defects decreased from 85 cases (a total of 236 cases) to 3 cases (a total of 229 cases), and the difference was statistically significant (χ2=91.26, P<0.05). Conclusions FMEA method is helpful to improve the accuracy and precision of critical value management of clinical blood samples, so as to ensure the safety of patients in hospitals.

Objective To explore the relationship of hypoxia inducible factor-1?(HIF-1?) expreesion and microvessel density with biological behavior of hepatocellular carcinoma(HCC).Methods The expreesions of HIF-1? and MVD were studied through immunohistochemistry in 36 cases of hepatocellular carcinoma tissues and 15 cases of paraneoplastic tissues.The relationship between these parameters were analyzed.Results The expression level of HIF-1? and MVD were more significant in HCC tissues than those in paraneoplastic tissues(P

BACKGROUND: So far there is a lack of reliable biomedical evidence about the effects of three-dimensional y (3D) printed porous β-tricalcium phosphate (β-TCP) scaffold loading poly(lactic-co-glycolic acid) (PLGA)/anti-tuberculosis drug control-release microspheres on the growth and proliferation of cel s, especial y osteoblasts. OBJECTIVE: To construct porous β-TCP scaffold loading PLGA/anti-tuberculosis drug control-release microspheres by 3D printing technology and to detect its cytotoxicity. METHODS: Twenty porous β-TCP scaffolds whose aperture was 400 μm were prepared by 3D printing technology. Ten of these scaffolds were randomly selected for loading PLGA/anti-tuberculosis drug control-release microspheres, and the others were without any drugs. Then the extracts from two groups were cultured with osteoblasts for 72 hours. Afterwards, cel morphology was observed by inverted phase contrast microscope, and the absorbance value was detected using cel counting kit-8 assay. Besides, the relative growth rate of osteoblasts was calculated to evaluate the cytotoxicity of the scaffold. RESULTS AND CONCLUSION: The drug-loaded scaffold exhibited with moderate size, regular structure and uniform pores. Within 72 hours of culture in the extracts from the drug-loaded scaffold, elongated or fusiform osteoblasts appeared, with less karyopycnosis. Moreover, the drug-loaded scaffold showed slight cytotoxicity, which was classified as grade 1. In conclusion, the 3D-pinted porous β-TCP scaffold loading PLGA/anti-tuberculosis drug control-release microspheres exhibits no obvious cytotoxicity.

Objective To investigate the therapeutic effects of Astragalus & Angelica (A&A) , the mixture of Chinese herbs, on different vasoconstrictors and vasodilators in the process of renal interstitial fibrosis in rats with unilateral ureteral obstruction (UUO). Methods Wistar rats were randomly divided into Sham,UUO and UAA (UUO+A&A) groups. After administration of A&A (14 g?kg-1?d-1) for 0, 3, 7 and 10 days, the levels of Ang-II , ET-1, nitric oxide(NO) and the activities of different NOS in renal homogenate were measured by RIA or enzyme method. The expression levels of eNOS, nNOS, iNOS were detected in the kidney by immunohistochemistry and semi-quantitively assessed by Western blot. Results After A&A administration, the levels of Ang- II and ET-1 were increased in UUO at all time points (P