Clinical teaching effect is directly affected by internship tutors’quality which is not very good at present. For this reason,a questionnaire on teachers and students was made and several solutions were put forward by analysis on the survey results.

Objective To evaluate HRCT typing of solitary pulmonary nodule with resected.Methods 30 cases with solitary plumonary nodules (totally 41) were undergone CT and HRCT scan befor operation.HRCT appearances were retrospectively analyzed and categorized into two types: typeⅠ ground-glass opacity (pure ground-glass opacity, mixed lower opacity, central high opacity with ground opacity ), typeⅡ pure solid opacity.Results TypeⅠ:14 nodules included bronchioloalveolar cell carcinoma (9 nodules) , adenocarcinoma (3 nodules),inflammatory granuloma (1 nodule) and adenoma (1 nodule).TypeⅡ : 27 nodules included adenocarcinoma(13 nodules),bronchioloalveolar cell carcinoma(4 nodules), squamous cell carcinoma(3 nodules),small cell lung cancer(1 nodule),adenoma(2 nodules),tuberculosis(2 nodules), inflammatory granuloma(1 nodule) and hamartoma(1 nodule). Among nodules with resected, ground-glass opacity was found more frequently in bronchioloalveolar cell carcinoma than in non- bronchioloalveolar cell carcinoma (P=0.002).No significant difference in ground-glass opacity existed between tumor lesions and non-tumor lesions (P=0.282) or adenocarcinoma and non-adenocarcinoma (P=0.146).Conclusion In the findings of HRCT in solitary pulmonary nodules,the nodules of ground-glass opacity find more frequently in bronchioloalveolar cell carcinoma than that in other lesions.

Objective To compare the effects of different antiplatelet therapy on outcomes in patients with acute coronary syndrome (ACS). Methods 338 hospitalized patients with ACS were enrolled. They were assigned to three groups: group 1, aspirin alone after discharge, n=93; group 2, dual antiplatelet treatment of aspirin and clopidogrel after discharge for 6～12 months, then aspirin, n=127; and group 3, dual antiplatelet treatment of aspirin and clopidogrel after discharge for 2 years, n=118. All the patients were followed up for 2 years. The clinical data (basic clinical data, platelet count and serum lipids indeices), primary end point (cardiovascular death, nonfatal myocardial infarction and stroke) and hemorrhagic events (major hemorrhage, moderate hemorrhage and minor hemorrhage) within 1 and 2 years were analyzed. Results During 1 and 2 years, compared with group 1, the incidence of cardiovascular death and all primary end points of groups 2 and 3 decreased significantly (P＜0.05), but the nonfatal myocardial infarction and stroke did not （P＞0.05）. The difference was not statistically significant between groups 2 and 3 in all the end points （P＞0.05）. The difference of hemorrhagic events was not statistically significant among the 3 groups（P＞0.05）. Conclusion Dual antiplatelet treatment of clopidogrel plus aspirin for 2 years may decrease the mortality of cardiovascular disease while the incidence of severe hemorrhage doesn't increase.

Ergonomics ; Humans ; Lifting ; National Institute for Occupational Safety and Health (U.S.) ; Occupational Health ; United States

Objective To design and develop a kind of venipuncture auxiliary device to use in the absence of light condition or patients with poor vein condition, and validate its clinical effect. Methods A total of 70 patients with shock were divided into experimental group (venipuncture auxiliary device group with 37 cases) and control group (non-device group with 42 cases) by random digits table method. The one-time puncture success rate and operating time were compared between two groups. Results The one-time puncture success rate was 94.59%(35/37) in experimental group and 78.57%(33/42) in control group, and there was significant difference, χ2=4.214, P<0.05. The time of establishing a single vein passage was (73.63±29.35) s in experimental group and (107.61±45.94) s in control group, and there was significant difference, t=3.656, P<0.05. Conclusions The device is small in size, low cost, easy to carry, the screen is clear, is a rapid infusion with explore vascular equipment. It can guide nurses accurately on vascular puncture, fast, smooth and effective transfusion puncture process.

Objective To investigate the effect of high pressure distention on the expression of stenosis-related genes of saphenous vein graft(SVG) during the coronary artery bypass grafting(CABG).Methods The biopsy specimens of saphenous vein collected from 10 patients who have undergone CABG,were divided into expansion group and no-expansion group.Real-time PCR and immunohistochemical staining were performed for examination of mRNA and protein expression of VE-cad,Egr-1,VCAN respectively.Student's t and Chi-square test were used to do statistic analysis.Results The results of RT-PCR showed that the mRNA transcription of Egr-1,VCAN in the expansion group were statistically significantly higher than those in no-expansion group(P<0.05).The mRNA transcription VE-cad in expansion group was statistically significantly lower than that in the no-expansion group(P<0.05).The immunohistochemical staining results showed that the expression of Egr-1 and VCAN in expansion group were significantly stronger than those in no-expansion group,while the expression of VE-cad was significantly lower than no-expansion group.Conclusion The intraoperative expansion of SVG can increase the expression of stenosis-related genes Egr-1 and Versican,and decrease the expression of stenosis-related gene VE-cad,which may be related with the SVG stenosis after CABG.

Objective To observe the distribution of blood vessels in tibial metaphysis in ovariectomized and control mice by micro-CT(?CT),and investigate the relationship between bone regional blood supply and osteoporosis. MethodsForty mice were randomly divided into ovariectomy group(n=20) and control group(n=20).Four weeks after operation,?CT analysis was conducted to observe the bone blood vessel distribution after silicone rubber perfusion,and bone mineral density measurement,?CT bone microarchitecture analysis and biomechanical test were performed. Results Bone mineral density,bone microarchitecture in ?CT analysis,biomechanical properties and bone blood vessel distribution in ?CT analysis of ovariectomy group were significantly lower than those of control group(P

BACKGROUND: Many methods involved in measuring energy expenditure of physical action, however, study regarding measurements of upper limber movement energy expenditure are few.OBJECTIVIE: To measure the energy expenditure of limber movement using indirect calorimetry, and to analyze the characteristics of upper limber movement energy expenditure and influencing factors such as age and gender.DESIGN, TIME AND SETTING: The comparison observation was performed at the Jiangsu Institute of Sports Science from January to March 2009.PARTICIPANTS: Totally 108 health adults, including 47 males and 61 females, participated in the study, 65 of them aged 20-39 years, and the remained 43 aged 40-59 years.METHODS: Energy expenditure of 4 upper limb movements were performed, including sitting posture arm swing (60 times/min),elbow flexion (40 times/min), shoulder flexion-extension (60 times/min), and lateral arm raise (30 times/min). At each interval,have a 3-minute rest.MAIN OUTCOME MEASURES: Oxygen expenditure of 4 kinds upper limb movements were measured by MetaMax 3B tester. RESULTS: Rest oxygen expenditure of males were greater than that of females (P < 0.05), greater in 20-39 years old than 40-59 years old (P < 0.05). The greatest oxygen consumption occurred in males with arm swing [(550.9±90.6) mL/min], which was (425.8±75.7) mL/min in females. The lowest oxygen expenditure was elbow bend [male: (440.4±82.7) mL/min, female: (367.0±60.1) mL/min]. Net oxygen expenditure of all 4 kinds of upper limb movements was lower than 250mL/min (1 metabolic equivalent).CONCLUSION: ① The energy expenditure of usual upper limber movements below 1 metabolic equivalent. ② Age and body mass has more effect on resting energy expenditure than the gender. ③ The efficiency of young adults upper limb movements is higher than old adults.

Objective To discuss the MRI features and its clinical significance of bone contusion in knee joint.Methods MR images of injuries of knee in 40 cases were retrospectively analyzed,the complications were reviewed simultaneously.Results 69 lesions of bone contusion in 40 cases were discovered,of them,Ⅰ type was in 38 and Ⅱ type was in 31, in company with fractures were 24 in 22 cases and ligament injury was in 33 cases.Conclusion The present of bone contusion is prompt to the bone injuries,MRI is of significant value in showing bone contusion and its complications in knee.

Animals ; Humans ; Vaccines, Virus-Like Particle ; genetics ; immunology ; Viral Vaccines ; genetics ; immunology ; Virus Diseases ; immunology ; prevention & control ; virology