小口径人工血管顺应性低、与宿主血管顺应性不匹配是造成人工血管远期通畅率低的主要原因.采用弹性优良的血管材料、减小壁厚、增大孔隙率与孔径、合理孔径分布和多层管壁结构等均可提高人工血管的顺应性.反之,热定型等后处理方法则会降低高分子人工血管的顺应性.因此,提高人工血管的顺应性需结合血管材料、管壁结构和后处理方法等多方面因素综合考虑.
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