Objective To design an intravenous indwelling needle in battle field aid.Methods Several concavity were made on the hollow tube inner surface posterior puncture needle case,and some corresponding convexity uplifted peripheral needle handle pistons posterior puncture needle core.Revolution could be avoided because the needle handle pistons were just embedded in hollow tube concavity.It was convenient to operate and decreased the operator's orientation transformation by the needle's handhold vane adopting rectangle instead of butterfly shape.Results The improved puncture needle was stable and the rate of success of intravenous puncture was increased.Conclusion The improved venous retaining needle can be applied in battle field aid.

Objective:To explore the route of automatic computer-aided design for occlusal rest of the removable partial denture.Methods: A new module for the design of occlusal rest was developed.The three-dimensional data of a partially dentate dental cast was obtained and imported into the new module.The contour of the occlusal's tissue surface was identified.Then,the tissue surface and polished surface were constructed respectively and connected to each other to form an integrated entity.Results: The surface of the occlusal rest was smooth and the curvature matched that of the surrounding area of the abutment tooth.The accuracy was satisfying.Conclusion: Design of occlusal rest was much more convenient and time-saving using the newly developed module.The future development of special software package for the design of removable partial denture will benefit from it.

Objective To investigate the electrophysiological characteristics of the atrium in patients with atrial fibrillation (AF) during electrophysiological study (EPS) Methods Seventy two patients with presence of AF during EPS were selected as Group AF , and the other 78 patients without AF as Group control All the patients had no AF history and structural heart diseases P A, P CSd, S1 A1, S2 A2, Max CD, CD zone and ERP HRA were measured as the electrophysiological parameters Results P A, P CSd, S1 A1, S2 A2, Max CD and CD zone were significantly longer in Group AF than in Group control , ERP HRA was shorter in Group AF Conclusion The decreased atrial conduction and the shorter atrial effective refractory period may be the electrophysiological basis for the occurrence of AF

Objective To study congenital transmission of Trichinella spiralis in mice and observe the protection of anti-Trichinella antibodies from the infected dams to challenge infection. Methods According to the gestation (fertilization), the Kunming mice were divided into two groups: the infected group after gestation and the gestated group after infection. New-born mice were cut into small pieces to separate the larvae within 1 day after birth. One-day-old offspring born to normal dams were nursed by the infected dams, slaughtered after 21 days and examined for the larvae. Serum anti-Trichinella antibody level in offspring born to the infected dams was assayed by ELISA at different time after birth, and its immune protection against challenge infection was studied. Results Out of 6 offspring born to the dams infected at 7 days after fertilization, two were found to be infected. Among other female mice which were first infected with T. spiralis and then gestated, only the offspring born to the dams fertilized at 8 and 22 days after infection were found to be infected, the infection rate of offspring was 20% (2/10) and 25%(2/8) respectively. All larvae recovered from the young were non-encapsulated. The cross-fostering experiment showed that none of 30 offspring born to normal dams were found to be infected. The serum antibody positive rate in 27 offspring born to the infected dams at 1, 7, 24, and 40 days after birth was 100%, 100%, 77.8% and 14.8%, respectively. The worm reduction rate in the offspring 40 days after birth was 62.0% after challenge infection. The worm reduction rate in mice in which sera from the offspring born to the infected dams were passively transferred was 55.7%, there was a significant difference (P

Objective To evaluate in-hospital and mid-term results of endovascular type B aortic dissection by stent graft.Methods From May 2002 to September 2006, 46 patients with type B aortic dissection underwent stent graft implantation. The study included 36 men and 10 women with mean age of 62?18 years old. Twenty one patients underwent stent-graft implantation in the acute phase and the other 25 patients in the chronic phase. All patients were followed up for 1 to 52 months (average 17?16 months) and the clinical data of the patients were analyzed. Results No patients died during hospitalization and within 30 days after operation. Transient post-implantation syndrome occurred in 11 patients. Left subclavian artery was totally occluded in 2 patients. Endoleak occurred in 5 patients and in 4 of them the leak closed spontaneously after three months of follow-up. Late endoleak occurred in 1 patient after one year. One patient developed paraplegia at 6 months after the operation. The follow-up CT scan at 3 months documented occlusion of the intimal tear by the stent-grafts and complete thrombosis of the false lumen in all patients. The true lumen of the aorta was enlarged and there was no evidence of migration or twisting of the stent-grafts. Ascending aortic dissection occurred in 1 patient after one year. Three patients died within the follow-up period. The mortality during the follow-up period was 6.7%. The actuarial survival curve by the Kaplan-Meier method showed a 4-year survival rate was 89.3%. Conclusion In-hospital and mid-term results showed that endovascular repair was effective in the treatment of type B aortic dissection.

Objective To evaluate the effectiveness and safety of successive interventional treatment in patients with thoracic aortic dissection and coronary heart disease by endovascular graft exclusion(EVGE)and percutaneous coronary intervention(PCI)respectively.Methods From January,2005 to July,2007,8 patients with Stanford B aortic dissection and coronary heart disease received successive EVGE and PCI in our centre.All patients were performed with EVGE 3-7 days prior to their PCI.Results The site of dissection tears were confirmed by aortic angiography which located within 0~10 mm from the exterior margin of left subclavian artery in 1 patient,11-30 mm in 4 patients and 31-50 mm in 3 patients.One patient had two tear gaps.Dissection of or distal to the renal arteries were involved in 7 patients.Talent graft(Medtronic Corporation,U.S.)was used in one patient and Aegis grafts(Microsport Medical Corporation,China)in 7 patients.Eight trunk tectorial membrane stents were used with lengths ranged from 100 to 140 mm with diameters ranged from 34 to 38 mm.Left subclavian artery was thoroughly covered by the proximal section of the graft in one patient,which resulted in a weak left radial artery pulse but with no obvious ischemic symptom of the left upper limb and brain.Procedures were technically successful in all patients and no severe complication such as death,paraplegia,and kidney insufficiency occurred after the procedure during hospitalization.Post-procedural aortography showed no leakage in 4 patients and minor leakage in 4 patients.Two patients had residual thoracic back pain which could be relieved by drugs.Coronary angiography showed that 4 patients had single-vessel disease,2 had double-vessel disease and one had triple-vessel disease.The mean stenosis rate of the target lesions was 85.6%?14.0% and the mean diameter of the reference vessels was 2.8?0.3 mm.Twelve stents were inplanted in 11 target vessels in 8 patients.The mean length of stents was 23.5?13.6 mm.The procedural success rate of PCI was 100% and no severe complication occurred.No mortality,delayed endo-leak,adverse cardiac events and repeat intervention was recorded during a mean follow-up period of 18.0?8.5 months.Conclusion It is safe and feasible to treat Stanford B aortic dissection and coronary heart disease by successive inter vention of EVGE and PCI.The effect of anticoapulation therapy after PCI on EVGE still requires further investigation.

AIM The quality standard of Tongmai Jiangzhi Capsules (Rhizoma Curcumae Longae, Radix et Rhizoma Rhei, Fructus Ligustri Lucidi, Rhizoma Alismatis) has been established. METHODS TLC was used to identify curcumin, rhein, emodin, chrysophanol and aloe-emodin. HPLC was used to determine the content of curcumin, free-chrysophanol and free-emodin. RESULTS[WTBZ]: The linear relation was excellent for determination with ODS column and methanol-water-acetic acid(77∶ 22∶ 1)as mobile phase. The average recoveries of curcumin, free-emodin, free-chrysophanol were 101.8 % , 97.55 % and 97.64 % , respectively. The curcumin content in capsule was 2.27 mg, free-emodin 0.162 mg, free-chrysophanol 0.291 mg. CONCLUSION The methods are available with a good reproducibility and can be used to control the quality of Tongmai Jiangzhi Capsules.

Objective To explore the in-hospital clinical results of percutaneous coronary intervention (PCI) in patients with multi-vessel coronary disease during past 11 years. Methods Data related to rates of success, complications and clinical effects of 4 365 patients who were hospitalized in our center and underwent PCI for their target multi-coronary arteries from 1995 to 2005 were analyzed. Among them 3 833 patients had acute coronary syndrome (ACS, 87.8%), among whom 1 480 suffered form acute myocardial infarction within 30 days (38.6%), 2 353 unstable angina pectoris (61.4%), and the remaining 532 patients had stable angina pectoris (12.2%). Results Overall success rate of PCI procedure for all patients and target lesions were 96.9% ( 4 230/ 4 365) and 98.8% ( 11 185/ 11 320), respectively. The total in-hospital all-reason mortality was 1.3% (56/ 4 365) and the mortality during PCI procedure was 0.05 % (2/ 4 365).The complication rate related to PCI procedure was 7.2% (314/ 4 365). After PCI procedure the angina-free survival rate for all patients was 96.2% ( 4 147/ 4 309) at discharge and the average hospital stay was 13?9 days. Conclusion The success rate of PCI procedure in patients with multi-vessel coronary disease is high, and the rates of complications and in-hospital mortality are low, all indicating that with PCI therapy an ideal short-term effect in patients with multi-vessel coronary disease can be achieved.

Objective To compare the clinical safty and short-term outcomes of multivessel percutaneous coronary intervention(PCI)by drug eluting stenting early after acute myocardial infarction(AMI).Methods A total of 343 patients who had multivessel disease and underwent PCI within 10 days after AMI were enrollded from January 2003 to November 2005 and were divided into three groups(134 patients in single-PCI group,112 patients in re-PCI-BMS group and 97 patients in re-PCI-DES group).The clinical safty and short-term outcomes of all patients were evaluated.Results The average ages of both re-PCI-BMS and re-PCI-DES groups were older than that of single-PCI group(68.4?12.8 yrs vs 63.9?11.4 yrs,P

Objective To evaluate the influence of complete or incomplete revascularization by percutaneous coronary intervention(PCI)on heart function of heart dysfunction patients with multivessel coronary artery disease.Methods The study retrospectively analysed the clinical data and the echocardiogram result in patients with multivessel coronary artery diease complicated with heart dysfunction,who underwent PCI procedure from October 1994 to October 2004 in our center.Results 6 months after revascularization by PCI,DE,SV,CO,LVEF,FS,MVCF and E/A elevated,MVEF velocity increased,and EPSS decreased in both complete and incomplete revascularization groups,but the above heart function indexes tested by echocardiogram in complete revascularization patients were better than those of incomplete revascularization patients.Conclusion PCI can significantly improve the heart function in both groups,but complete revascularization by PCI improves the heart function of patient with multivessel coronary artery disease more obviously in compare with incomplete revascularization.