目的 探讨搭桥术对主动脉夹层假腔内血流动力学参数的影响及该术式的治疗有效性.方法 利用AutoCAD软件构建DeBakeyⅢ型主动脉夹层及其移植管搭桥术的理想化二维几何模型,然后利用ANSYS软件进行数值模拟,分析计算结果的血流动力学特性.结果 在实施搭桥手术后,假腔内的血流速度与压力均小于实施搭桥手术前的值.结论 利用旁路搭桥转流术可有效地降低主动脉弓的血压,减轻血流对夹层病变的冲击和压力.由此推之到其对防止夹层破裂,促进夹层局部病变愈合,是一种有效的手术方式.

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