不同内径腹主动脉瘤腔内血流状况分析  

Blood stream in abdominal aortic aneurysms with different diameters

作　　者：陆清声[1] 景在平[1] 徐静[1] 梅志军[1] 黄晟[1] 熊江[1] 

机构地区：[1]第二军医大学长海医院血管外科解放军血管外科研究所,上海200433

出　　处：《中华实验外科杂志》2004年第4期397-399,共3页Chinese Journal of Experimental Surgery

基　　金：国家自然科学基金资助项目 (3980 0 1 77)

摘　　要：目的　观察不同内径腹主动脉瘤腔内血流情况。方法　应用二维彩色多普勒超声观察不同内径和形状腹主动脉瘤患者 (2 0例 )和通过牛颈外静脉移植法 (3例 )及补片法 (3例 )制作不同内径和形状的腹主动脉瘤模型的动脉瘤腔内血流。结果　在人体中 ,动脉瘤内径≤ 3 .0cm有 5例 ,其中 4例为层流 ,动脉瘤形态为梭形。动脉瘤内径 >3 .0cm有 15例 ,其中 14例出现湍流。 3例牛颈静脉移植法建立的模型 ,当内径≤ 1.5cm时 ,血流表现为层流 ,动脉瘤形态为梭形。内径 >1.5cm时 ,动脉瘤腔内出现湍流和逆流。 3例牛颈静脉补片法建立的模型 ,在动脉瘤腔内近凸起部位出现湍流和逆流。结论　随着动脉瘤内径的增大和形状的改变 ,瘤腔内的血流更为复杂 ,可能会对动脉瘤的生长、破裂及血栓形成产生进一步的影响。ObjectiveTo observe blood stream in abdominal aortic aneurysm with different diameters.MethodsThe bovine jugular vein segments were removed (3 cases) and patched (3 cases) to the canine successively at infra-kidney abdominal aorta to construct aneurysm models with different diameters and shapes.The blood streams in the 20 patients' and models' abdominal aortic aneurysms were measured by Doppler ultrasound.ResultsThere were 5 patients whose abdominal aortic aneurysms' diameters were not more than 3 cm.The stream in 4 aneurysms of the 5 patients was laminar flow and the shape of the 4 aneurysms was shuttle-like.The stream was onflow in 14 aneurysms in which the diameters were more then 3 cm.When the diameters of 3 models' aneurysm were not more than 1.5 cm,the stream in the aneurysms was laminar flow.When the diameters were more than 1.5 cm,reverse flow and onflow appeared.There were some reserve flow and onflow in 3 patching models' aneurysms.Conclusion The blood streams in abdominal aortic aneurysms are more complicated with the increased diameters and varied shapes in aneurysms,which may influence expansion and rupture of the aneurysm and thrombosis.

关 键 词：腹主动脉瘤 腔内血流 分析 二维彩色多普勒超声 

分 类 号：R654.3[医药卫生—外科学]