Micro-syringe as a result of the high frequency of clinical use, direct contact with patients, the failure of its equipment will have a direct impact on the patient's disease status. Researchers in this paper, by simulating the test fluid, electrical safety testing and analysis of statistical methods such as maintenance records, consider six kinds of common injection pump, in terms of performance, safety and the failure rate of three performance. Compared the performance analysis, summarized the various types of injection pump characteristics, researchers make suggestions to clinical departments, equipment procurement and equipment management departments for usage and improvement.
Equipment Failure ; Equipment Safety ; Syringes

The anti-hepatitis B virus (HBV) effects and its mechanisms of the ethanol extracts of Hypericum perforatum L. (EHP) in vitro were explored. HepG2 2.2.15 cells, a stable HBV-producing cell line, were cultured as the model system to observe the anti-HBV effect. The viral antigens of cellular secretion, HBsAg and HBeAg, were determined by enzyme linked immunosorbent assay (ELISA). The quantity of HBV-DNA released in the supernatant was assayed by real-time PCR. In order to understand the mechanisms of the suppression of HBV replication, all HBV promoters (Cp, Xp, S1p, S2p and Fp) with luciferase reporter gene were transfected into HepG2 cells respectively. Then the activities of viral promoters were examined by luciferase reporter assay. It was found EHP effectively suppressed the secretion of HBsAg and HBeAg from HepG2 2.2.15 cells in a dose-dependent manner, as well as the extracellular HBV DNA. And EHP could selectively inhibit the activity of HBV promoter Fp. Our data suggest that EHP exerts anti-HBV effects via inhibition of HBV transcription, which helps to elucidate the mechanism underlying the potential therapeutic value of EHP.

Objective To analyze the correlative factors of anemia in patients with non-small-cell lung cancer (NSCLC), and to explore the impact of anemia on prognosis.Methods The clinical data of 473 patients with NSCLC treated at the first time from January 2008 to November 2012 in the Fourth Hospital of Hebei Medical University were analyzed retrospectively.Results There were 273 patients (57.72 ％) with anemia.Anemia occurred in different age (x2 =3.459, P =3.459), different albumin level (x2 =70.648, P =70.648), different PS score (x2 =10.222, P =10.222), whether recent surgery (x2 =4.956, P =4.956), whether recent chemotherapy (x2 =3.627, P =0.037), and other factors.By multiple factors analysis, hypoalbuminemia was an independent risk factor for anemia (P ＜ 0.05).The median OS of the anemia patients was shorter than that of the patients without anemia (15 months vs 17 months, P ＜ 0.05).Conclusions Hypoalbuminemia is the independent risk factor for emergence of anemia.Anemia is the prognosis indicator of shorten survival period, which is an independent factor of prognosis in the NSCLC.

Objective:To investigate the anticoagulant causes, hemorrhagic susceptibility factors and clinical characteristics of patients with warfarin-related major bleeding in the emergency department of a general hospital.Methods:In a registry study from January 2017 to February 2020, 114 cases of warfarin-related major bleeding patients admitted to Department of Emergency Medicine, the First Affiliated Hospital of Wenzhou Medical University were enrolled. The descriptive methods were used to analyze anticoagulant causes, hemorrhagic susceptibility factors and clinical characteristics. Patients were divided into the international normalized ratio (INR) overrange group and the INR non-overrange group according to INR value during bleeding. The Chi-square test, Student’s t test, and Wilcoxon rank sum test were used to compare the differences between the INR overrange group and the INR non-overrange group. The Wilcoxon rank sum test and Student’s t test were used to analyze the characteristics of gastrointestinal tract bleeding and cerebral hemorrhage. Results:Warfarin-related major bleeding accounted for 0.36% (114/32 040) of first aid cases and 9.84% (114/1 158) of warfarin-taking cases, respectively. Seventy-seven cases (67.5%) of anticoagulant causes were related to atrial fibrillation (AF) and 32 cases (28.1%) were related to post-operative cardiac valve replacement. Of the bleeding susceptibility factors, HAS-BLED scored at 4.0 (3.0, 5.0), 84 cases (73.7%) had a history of drug use, 77 cases (67.5%) aged older than 65 years old, 65 cases (57.0%) had irregular INR monitoring, and 29 cases (25.4%) had recent increase in dose. Forty cases (35.1%) were gastrointestinal tract bleeding with the lowest hemoglobin (Hb) value and the highest score of HAS-BLED. Twenty-one cases (18.4%) were cerebral hemorrhage with the shortest prothrombin time (PT), the lowest INR value, the highest Hb, and the lowest score of HAS-BLED. Twelve cases (10.5%) died or gave up treatment in critical condition, including 6 cases of cerebral hemorrhage, 5 cases of gastrointestinal tract bleeding, and 1 case of hemoptysis. There were statistically significant differences in previous history of antiplatelet therapy, recent increase in dose, HAS-BLED score and bleeding site between the INR overrange group and the INR non-overrange group (all P<0.05). Conclusions:Among patients with warfarin-related major bleeding, AF and post-operative cardiac valve replacement are the main causes of warfarin anticoagulation. INR overrange is related to the previous history of antiplatelet therapy, recent increase in dose, and the high score of HAS-BLED. The gastrointestinal tract bleeding is the most common, with the lowest Hb value and the highest score of HAS-BLED. Cerebral hemorrhage is the second common, with the shortest PT, the lowest INR value, and the highest Hb. The incidence and mortality rates of warfarin-related major bleeding are relatively high.

OBJECTIVETo investigate the effects of total flavonoids of Chrysanthemum indicum (TFC) on metabolism of free radical and immunoregulatory effects in adjuvant arthritis (AA) rats.

METHODAA rats were induced by Freunds complete adjuvant. Secondary paw swelling of AA rats was measured with volume meter to observe the antirheumatic effect of TFC. The levels of SOD, MDA and NO in serum and supernatant of peritoneal macrophage were measured by commercial assay kits. ConA-induced splenocyte proliferation and IL-2 level produced by splenocyte were detected by MTT method.

RESULTTFC could decrease the levels of MDA and NO, as well as increase the activity of SOD in serum and supernatant of peritoneal macrophage compared with AA model group. Meanwhile, the suppressed lymphocyte proliferation and IL-2 production of splenic lymphocytes in AA rats were reversed by treatment with TFC.

CONCLUSIONTFC showed significant therapeutical effect on adjuvant arthritis and its mechanism was at least in part related to the antioxidant and immunoregulatory effects.

Animals ; Antioxidants ; metabolism ; Arthritis, Experimental ; drug therapy ; immunology ; metabolism ; Cells, Cultured ; Chrysanthemum ; chemistry ; Flavonoids ; chemistry ; therapeutic use ; Free Radicals ; metabolism ; Interleukin-2 ; metabolism ; Lymphocyte Activation ; drug effects ; Male ; Malondialdehyde ; metabolism ; Mice ; Mice, Inbred C57BL ; Nitric Oxide ; metabolism ; Rats ; Rats, Sprague-Dawley ; Spleen ; cytology ; Superoxide Dismutase ; metabolism

The anti-hepatitis B virus(HBV)effects and its mechanisms of the ethanol extracts of Hypericum perforatum L.(EHP)in vitro were explored.HepG2 2.2.15 cells,a stable HBV-producing cell line,were cultured as the model system to observe the anti-HBV effect.The viral antigens of cellular secretion,HBsAg and HBeAg,were determined by enzyme linked immunosorbent assay(ELISA).The quantity of HBV-DNA released in the supernatant was assayed by real-time PCR.In order to understand the mechanisms of the suppression of HBV replication,all HBV promoters(Cp,Xp,S1p,S2p and Fp)with luciferase reporter gene were transfected into HepG2 cells respectively.Then the activities of viral promoters were examined by luciferase reporter assay.It was found EHP effectively suppressed the secretion of HBsAg and HBeAg from HepG2 2.2.15 cells in a dose-dependent manner,as well as the extracellular HBV DNA.And EHP could selectively inhibit the activity of HBV promoter Fp.Our data suggest that EHP exerts anti-HBV effects via inhibition of HBV transcription,which helps to elucidate the mechanism underlying the potential therapeutic value of EHP.

Multi-disciplinary team(MDT)mode is regarded as the key to standardized diagnosis and treatment of malignant tumors. The model, however, encounters such roadblocks in the current form of MDT organization, as costly clinical resources and time consumption, low efficiency, poor management of participating experts in MDT, and lack of enforceability of the therapeutic decisions made. This paper summarized the practical MDT experiences of the Affiliated Cancer Hospital of Shandong First Medical University. It introduced the construction of an intranet-based MDT system covering a large proportion of newly diagnosed malignant tumor patients, and the practices and achievements of such MDT management system under hospital administrative guidance. The authors proposed to use reporting ratio as the main assessment indicator in promoting MDT, and that to define the performance, responsibilities and rights in MDT practice. These measures aim at to upgrading individual behaviors of doctors to organizational behaviors of hospitals, and providing cancer patients with more standardized, comprehensive and personalized diagnosis and treatment decisions.

Background As a key to economic and social development, occupational groups with low levels of occupational health literacy (OHL) are considered vulnerable groups with high risks of work-related diseases and injuries. Therefore, improving the OHL of these groups is of great significance in reducing the burden on public health. Objective To master the four dimensional OHL levels and influencing factors of the key groups in Fuling District, Chongqing, and provide a basis for formulating health education programs for occupational groups in the future. Methods The Occupational Health Literacy Questionnaire of Key Populations was distributed online to investigate the key occupational groups in Fuling District through stratified cluster sampling. The survey collected data on basic demographic information, legal knowledge of occupational health, basic knowledge of occupational health protection, basic skills of occupational health protection, and healthy working style and behavior. Univariate analysis, logistic regression, and nomogram were used to analyze the above data. Results This survey distributed 4824 questionnaires, of which 4677 were valid, with a recovery rate of 97.0%. The dimensional OHL levels of key occupational groups in Fuling District from high to low were: healthy working style and behavior (79.1%), basic knowledge of occupational health protection (78.4%), legal knowledge of occupational health protection (43.3%), and basic skills of occupational health protection (37.6%). The results of logistic regression showed that the occupational health legal knowledge levels in the groups of high school/vocational high school/technical secondary school and above (reference: primary school and below) (OR=1.47, 95%CI: 1.05, 2.05), ≥3000 yuan of monthly income (reference: <3000 yuan of monthly income) (OR=1.39, 95%CI: 1.06, 1.84), and medium enterprises (reference: micro enterprises) (OR=1.84, 95%CI: 1.29, 2.63) were higher; the occupational health legal knowledge level in the electricity, heat, gas, and water production and supply industry was lower than that in the mining industry (OR=0.68, 95%CI: 0.47, 0.97); the basic knowledge levels of occupational health protection in the groups of ≥ 3 years of service (reference: < 3 years of service) (OR=0.78, 95%CI: 0.65, 0.94) and medium enterprises (reference: large enterprises) (OR=0.78, 95%CI: 0.64, 0.95) were lower; the basic knowledge level of occupational health protection in the ethnic minorities was higher than that in the Han ethnic group (OR=1.73, 95%CI: 1.04, 2.87); the occupational health protection basic skill level in the group of ≥ 3 years of service (reference: < 3 years of service) (OR=0.69, 95%CI: 0.60, 0.79) was higher; the level of healthy working style and behavior in the group of ≥ 11 years of service (reference: < 3 years of service) (OR=0.73, 95%CI: 0.59, 0.89) was lower; the level of healthy working style and behavior in the group of high school/vocational high school/technical secondary school and above (reference: primary school and below) (OR=1.60, 95%CI: 1.15, 2.23) was higher. The nomogram showed that educational level and monthly income had the greatest impact on the occupational health legal knowledge level; length of service had the greatest impact on the basic knowledge of occupational health protection level and the healthy working style and behavior level. Conclusion In the future, the focus of health education and health promotion in Fuling District should be implemented to improve the basic skills of occupational health protection and the legal knowledge of occupational health, especially for workers with low education, low income, from micro enterprises, and on the job, so as to improve their skills of occupational health protection and legal knowledge, and to control the occurrence of occupational or work-related diseases.

Objective: To analyze the clinical characteristics of cases of novel coronavirus pneumonia and a preliminary study to explore the relationship between different clinical classification and liver damage. Methods: Consecutively confirmed novel coronavirus infection cases admitted to seven designated hospitals during January 23, 2020 to February 8, 2020 were included. Clinical classification (mild, moderate, severe, and critical) was carried out according to the diagnosis and treatment program of novel coronavirus pneumonia (Trial Fifth Edition) issued by the National Health Commission. The research data were analyzed using SPSS19.0 statistical software. Quantitative data were expressed as median (interquartile range), and qualitative data were expressed as frequency and rate. Results: 32 confirmed cases that met the inclusion criteria were included. 28 cases were of mild or moderate type (87.50%), and four cases (12.50%) of severe or critical type. Four cases (12.5%) were combined with one underlying disease (bronchial asthma, coronary heart disease, malignant tumor, chronic kidney disease), and one case (3.13%) was simultaneously combined with high blood pressure and malignant tumor. The results of laboratory examination showed that the alanine aminotransferase (ALT), aspartate aminotransferase (AST), albumin (ALB), and total bilirubin (TBil) for entire cohort were 26.98 (16.88 ~ 46.09) U/L and 24.75 (18.71 ~ 31.79) U/L, 39.00 (36.20 ~ 44.20) g/L and 16.40 (11.34- ~ 21.15) mmol/L, respectively. ALT, AST, ALB and TBil of the mild or moderate subgroups were 22.75 (16.31- ~ 37.25) U/L, 23.63 (18.71 ~ 26.50) U/L, 39.70 (36.50 ~ 46.10) g/L, and 15.95 (11.34 ~ 20.83) mmol/L, respectively. ALT, AST, ALB and TBil of the severe or critical subgroups were 60.25 (40.88 ~ 68.90) U/L, 37.00 (20.88 ~ 64.45) U/L, 35.75 (28.68 ~ 42.00) g/L, and 20.50 (11.28 ~ 25.00) mmol/L, respectively. Conclusion The results of this multicenter retrospective study suggests that novel coronavirus pneumonia combined with liver damage is more likely to be caused by adverse drug reactions and systemic inflammation in severe patients receiving medical treatment. Therefore, liver function monitoring and evaluation should be strengthened during the treatment of such patients.