10.3969/j.issn.2095-4344.2013.23.020

Epidermnoid cysts are henign, cutaneous cysts which commonly occur on face, neck and trunk. Retroauricular epidermoid cyst is rare reported which should be differentiated from auricle pseudocyst, lipoma, steatocystoma and fibroma. The hitopathological examination is a gold standard of diagnosis. Surgery of complete excision is the first choice of treatment methods.
Ear, External ; pathology ; Epidermal Cyst ; diagnosis ; pathology ; Humans

Objective The research of impeller blood pump has been the key point in cardiac surgery and biomedical engineering fields in recent years. To investigate hydrodynamies of self researched and developed mini axial flow pump, parameters of pump were tested on a homemade mimic vitro platform. Methods Hydrodynamics tests were performed in vitro mimic circulation, water and 30% glycerin in water as respeetive circulatory mediator to simulate blood. Results Flow rates can reach 6. 19L/min and 5.08L/min respectively in water and 30% glycerin, when rotation speed was 13000rpm and pressure was 100mmHg. Conclusion Axial flow blood pump has good hydrodynamics to substitute for left ventricle, whieh can meet the demand of assisted circulation in congestive heart failure patients.

Objective To study the efficiency of the first time platelet transfusion in patients with blood diseases.Methods Investigate the effect of platelet transfusion in 87 patients with blood diseases.All the patients were transfused 10U platelet (platelet≥2.5×1011 ).Observe CCI after platelet transfusion and analyse the influence factors to the efficiency of the first time platelet transfusion such as the kind of diseases,splenomegaly,fever,age and sex.Results After platelet transfusion,66 patients (75.9 ％) were effective.The efficancy rates were 80.0 ％,78.1％,65.2 ％,82.3 ％ in AA,ITP,AL,MDS (x2=2.88,P＞0.05).In 31 patients with a fever and infaction the efficancy rate was 58.1％,but it was 85.7％ in 56 patients without a fever and infaction (x2=8.3308,P＜0.01).The efficancy rate in 59 patients with non-splenomegaly was 86.4 ％.It was higher than that in 28 patients with splenomegaly which was 53.6％(x2=11.2033,P＜0.01).The efficancy rate was 76.0％ in male patients and it was 75.7 ％ in female patients (x2=- 0.0012,P＞0.05).The efficancy rate was 74.5 ％ in young group (＜60 years old)and 77.8 ％ in old group (≥60 years old)(x2=0.1231,P＞0.05).Conclusion Fever and splenomegaly are the influence factors to the efficiency of the first time platelet transfusion.

Objectives:This study aims to provide a full picture of how Health Policy and Systems Research ( HPSR) in Chinese universities. Based on the current situation, analysis of problems and challenges of the HPSR capacity has been conducted and suggestions on personnel training have been proposed. Methods: Quantitative sur-veys and qualitative interviews have been conducted among personnel engaged in HPSR from 8 representative univer-sities. Results:Most HPSR researchers in the universities are young, of which 75. 26% have doctorates and the ma-jority is trained in health care management and public health sciences. Among the current HPSR projects, health in-formation and evidence is the main research direction in this field, and both the capital investment and attention of re-searchers are high. However, research resources and funding are still currently focused on senior researchers, with limited efforts to support young scholars. HPSR has interdisciplinary and multidisciplinary characteristics, but cur-rently the collaboration among institutions and individuals is relatively limited. In addition, only 5. 81% of undertak-en HPSR projects have been translated into health policy. Discussion and Suggestions:HPSR researchers in Chinese universities are not sufficient and have similar backgrounds, resulting in limited collaboration. Investment in HPSR projects is still shallow and young researchers are vulnerable in acquiring funding resources. The ability to translate research results into policy is weak. Therefore, this paper suggests to mainstream undergraduate and postgraduate teaching, enhance the training, funding and technical support for young researchers, and to establish the mechanism of dissemination of research findings and their translation into policy.

BACKGROUND:A few studies have reported that autologous chondrocyte implantation is better than microfracture for treating cartilage defects of the knee. But there are few meta-analyses on the clinical outcomes of autologous chondrocyte implantation versus microfracture. OBJECTIVE:To evaluate the effects of autologous chondrocyte implantation versus microfracture in the treatment of cartilage defects of the knee based on existing clinical data. METHODS:A systematic search for control ed clinical trials or control ed prospective observational studies published from 1979 to January 2015 was done in electronic databases MEDLINE, EMBASE, CINAHL, the Cochrane Central Register, Wanfang, CNKI and VIP. The literatures about the effects of autologous chondrocyte implantation versus microfracture in the treatment of cartilage defects of the knee were retrieved. We screened the retrieved literature according to the inclusion and exclusion criteria and performed a Meta-analysis with the software RevMan 5.2 after identification of the relevant data. RESULTS AND CONCLUSION:Eight studies were enrol ed according to the selection criteria, which revealed a statistical y significant difference, representing a clinical y relevant superiority of autologous chondrocyte implantation over microfracture, in IKDC scores at final fol ow-up [weighted mean difference (WMD),-9.93;95%confidence interval (CI):-13.16 to-5.43;P<0.000 01] and available scores at 5-year fol ow-up [standard mean difference (SMD),-0.30;95%CI: -0.55 to-0.05;P=0.02). In contrast, there were no significant differences, thus representing no clinical relevant superiority of microfracture versus autologous chondrocyte implantation, in Tegner scores at final fol ow-up (WMD=0.44;95%CI:0.04 to 0.84;P=0.03), Lysholm scores at final fol ow-up (WMD=-10.21;95%CI:-33.68 to 13.26;P=0.39), and available scores at 2-year fol ow-up (SMD=-0.25;95%CI:-0.92 to 0.43;P=0.47). These findings demonstrate that autologous chondrocyte implantation can result in a better long-term outcome than microfracgure. However, whether autologous chondrocyte implantation has a better treatment effect than microfracture in general needs more research.

Objective: The compare the safety and efficacy between cryoablation (CRYO) and radiofrequency catheter ablation (RFCA) for treating the patients with atrio-ventricular nodal reentrant tachycardia (AVNRT) by meta-analysis.
Methods: We systemically searched the Medline, Cochrane library and Embase database to fulifll our pre-deifned criteria until the publication of May 2014.
Results: There were 5 randomized controlled trials (RCTs) and 14 retrospective trials enrolled in our study with 2900 patients. The patients were allocated into 2 groups:CRYO group, n=1384 and RFCA group, n=1516. The overall pool-analysis demonstrated that compared with RFCA group, CRYO group had the lower risk of permanent atrio-ventricular nodal block (OR:0.27, 95%CI 0.11 to 0.62, P<0.01) and shorter X-ray exposure time (WMD:-3.36, 95%CI-5.58 to-1.15, P<0.01);while CRYO group had the lower immediate procedural success rate (OR:0.63, 95%CI 0.42 to 0.96, P<0.05), longer procedural time (WMD:10.97, 95%CI 3.35 to 18.58, P<0.01), and higher long-term arrhythmia recurrence rate (OR:2.89, 95%CI 2.05 to 4.06, P<0.01).
Conclusion: Although CRYO could decrease the risk of permanent atrio-ventricular nodal block, while its effectiveness was lower than RFCA for AVNRT treatment in relevant patients.

rotein binding toxin and pathogenic components, and reduce clinical symptoms and patients'prognoses, which is more effective than HP or CVVHDF.

Objective The purpose of this study was to evaluate the hemodynamic effects of an extra-thoracic paraaortic counterpulsation device(ETPACD) with various capacities in an animal model with acute heart failure.Methods The acute heart failure model was successfully induced by snaring branch of anterior descending coronary artery in sheep(weighting 35-42 kg,n =8).The ETPACD is a single port,40 ml,60 ml and 80 ml stroke volume blood chamber designed to be connected to descending aorta through a valveless graft and placed extra-thorax.The hemodynamic indices of 40 ml,60 ml and 80 ml stroke volume were recorded respectively during counterpulsation assistance.Results 40 ml,60 ml and 80 ml ETPACD increased cardiac output 36.98％ (P =0.009),34.16％ (P =0.012) and 53.26％ (P =0.000) respectively,80 ml compared with 60 ml and 40 ml respectively P =0.001,P =0.005.And on diastolic mean aortic pressure 43.40％ (P =0.000)、63.20％ (P =0.000) and 78.76％ (P =0.000),80ml compared with 60ml and 40ml respectively P =0.329,P =0.025.The ETPACD (40 ml,60 ml and 80 ml) increased left carotid artery flow 45.19％ (P =0.007) 、61.51％ (P =0.001) and 81.50％(P=0.000),80 ml compared with 60ml and40 ml respectively P=0.016,P =0.000.Conclusion This study demonstrated that ETPACD (40 ml,60 ml and 80 ml) provided benefit of circulatory support in acute heart failure with better effect on hemodynamic parameters provided by 80 ml.Therefore,ETPACD with larger stroke volume may become a promising counterpulsation device for treatment of heart failure.

Objective To discuss clinic effect of pulmonary artery valvuloplasty for right ventricle outflow tract (RVOT) reconstruction in patients with repaired tetralogy of fallot (TOF). Methods A total of 93 cases TOF were randomly divided into Group A (n = 49) or Group B (n = 44) to perform the procedure with repaired tetralogy of fallot Group A received autogenous pericardium to enlarge RVOT and pulmonary valvuloplasty.Group B received autogenous pericardium to enlarge RVOT by routine therapy. Pulmonary regurgitation index (PRi) and the ratio between pulmonary regurgitant jet width and pulmonary annulus diameter were measured with echoeardiography. Results The mean follow-up was 3. 1 ± 0. 2 years. The PRi and the ratio between pulmonary regurgitant jet width and pulmonary annulus diameter in Group A were-significantly lower than Group B (0. 55 ± 0. 13 vs. 0. 61 ± 0. 10, t = 2. 685, P < 0.01) and ([52.0 ± 10.4] % vs. [57.1 ± 10. 5]% ,t = 2. 349, P < 0.05) . Three-dimensional ultrasound examination showed that 69% (34/69) of pulmonary valves in Group A was developed well. Conclusion Pulmonary valvuloplasty during transannular patch for repaired TOF may prevent fre'e pulmonary regurgitation and can obtain good clinical outcome.