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不同缝合方法对兔胆管损伤后早期愈合的影响 被引量:2

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摘要 目的观察不同缝合方法对兔胆管损伤愈合早期的影响。方法将35只兔随机分为3组,连续缝合组(15只)、间断缝合组(15只)制备胆管损伤模型,术毕连续缝合组以6-0无损伤缝线作黏膜对黏膜外翻全层连续缝合,间断缝合组为全层间断缝合。在术后1、2、4周,连续缝合组、间断缝合组分别用空气栓塞法各处死5只;取胆总管缝合处上下0.5 cm胆管组织,测量缝合处管壁厚度及管腔内周长。对照组直接处死,在相同位置取长约0.5 cm胆管组织,测量管壁厚度及管腔内周长。采用免疫组化染色法检测胆管α-平滑肌肌动蛋白(α-SMA)、增殖细胞核抗原(PCNA),计算微血管密度(MVD)。结果与对照组比较,连续缝合组、间断缝合组术后各时点胆管壁厚度、α-SMA、PCNA阳性细胞率、MVD增加,管腔内周长减少(P均<0.05);与间断缝合组比较,连续缝合组术后各时点胆管壁厚度、α-SMA、PCNA阳性细胞率、MVD增加,管腔内周长减少(P均<0.05)。结论与间断缝合相比,连续缝合可使胆管损伤愈合早期胆管壁增厚,瘢痕组织内细胞分裂增殖更旺盛,肌成纤维细胞更多,瘢痕组织缺氧程度更严重;连续缝合对胆管损伤边缘血供破坏更大可能是导致这一差异的重要原因。
出处 《山东医药》 CAS 2013年第39期34-36,共3页 Shandong Medical Journal
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