摘要
冠状动脉旁路移植术是当代医学公认的治疗冠心病最有效的手术方法,但是移植血管桥在术后出现狭窄一直是影响手术疗效的重要因素。很多因素都会影响血管桥的术后通畅性,其中包括移植材料的组织学及生理学特性、一些生长因子的作用、手术相关因素、新技术的采用、移植血管桥的慢性感染、患者是否合并有其他基础疾病、术后用药的合理性、移植后血流环境的改变导致的血管生理生化功能的改变及患者术后的生活习惯等。其中,术后中期血管桥狭窄与内膜增厚密切相关,而如何抗平滑肌细胞增殖及内膜增厚的相关研究则有所欠缺。同时,通过前期力学实验发现:静脉血管桥在移植动脉系统后其生物力学性能较移植前发生了明显变化,因此,术后静脉血管桥的狭窄与其力学参数的变化是否存在着某种联系及其规律尚需进一步探讨。最后,随着分子生物学及基因学、新材料学科、理工科和医学交叉及融合的新探索,将会发现更多影响术后血管桥通畅性的关键因素,或许可以从更加全面的视角综合干预、改善冠脉搭桥术后血管桥的中远期通畅性。
引文
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