ABSTRACT
Objective To assess the results of emergency endovascular stent-grafting for patients with acute Stanford type B aortic dissection(type B AAD)within 24 hours of onset.Methods Between June 2007 and October 2008,30 patients with acute type B aortic dissection underwent emergency endOVascular stent-grafting within 24 hours of presentation.Under general anesthesia,stent-graft was deploved at the proper position of first tear entry through femoral artery under X-ray monitering.Follow-up by CT was performed 1 w,1 m ,3 m,6 m,1 y postoperatively to observe the efficacy and complications such as endoleak,migration and fracture of stent-graft. Result The technical success rate was 100%;13.4%(4 cases) endoleak rate was identified immediately after deployment.Follow up was made between 1 month to 19 months,averaging at(12±8)months,3.3%type-1 endoleak Was observed after 6 months;One patient died within 30 days possibly of dissection rupture;One patient died of acute liver failure during the follow-up. Conclusion Endovascular repair with stent-graft within 24 hours of presentation was effectivefor the treatment of acute type B aortic dissection.
ABSTRACT
Objective To evaluate the value of three dimensional reconstruction images of rotational DSA on measuring aneurysmal necks and make a comparison with traditional DSA so as to provide more abundant and accurate informations for the enbolization of aneurysm. Methods A comparison was made between the measurement of aneurismal necks from 14 cases with traditional DSA examination and a measurement made on three dimensional reconstruction images of the same patient. Results There was a difference shown in the measurment of the aneurysmal necks between three dimensional reconstruction images of rotational DSA and those of traditional DSA, outcoming with more angles and data on three dimensional reconstruction images. Conclusions There are more angles of aneurysmal neck can be shown on rotational 3D DSA especially for the demonstration of the largest aneurysmal neck with a directional value for the intervention. (J Intervent Radiol, 2006, 15: 259-260)
ABSTRACT
Objective To screen a kind of microorganism which is low poisonous for living creature but has high molluscicidal effect. Methods The Xanthobacter autotrophicus from the soil where Oncomelania hupensis lived were detached, then its molluscicidal effect against the snails were studied by the immersing and contacting methods, respectively. Results The death rates were 1.3%-95.0% immersed for 24 to 72 hours in the different density liquids (1?106,2?106,3?106,4?106 cfu/ml). The LD_~50 immersed for 48 hours was 2.6?106 cfu/ml. The death rates had obviously positive relationship with the immersing time and the density of the liquid. Conclusion The liquid which contains more than 106 cfu/ml Xanthobacter autotrophicus has a stable molluscicidal capacity, and the immersing method is better than the contacting method.[