皮瓣受区床与缺血-再灌注皮瓣成活的关系

目的 :探讨皮瓣受区床对缺血 -再灌注皮瓣成活的影响 ,重视受区床的营养性作用。　方法 :40只大鼠分成 A组 (皮瓣下不置硅胶膜 )、 B组 (皮瓣下置硅胶膜后再缝合 )。阻断腹壁浅血管 1h、 6 h、 10 h及完全切断腹壁浅血管 ,观测不同时段皮瓣温度及组织病理改变 ,7天时计算皮瓣成活面积。　结果 :皮瓣温度、皮瓣成活面积及组织病理学改变阻断血管1h A、 B组无明显差别 ,阻断 6 h、 10 h及完全切断血管两组间有显著差别。 A组阻断 10 h与完全切断血管两组间皮瓣成活面积很相近。 A组完全切断血管后真皮下组织见白细胞大量聚积。　结论 :皮瓣受区床对缺血 -再灌注皮瓣成活起营养作用。白细胞可损害这种营养性作用。

THE RELATIONSHIP BETWEEN THE RECIPIENT BED VASCUSARITY AND VIABILITY OF ISCHEMIC-REPERFUSION FLAP

Objective:To study the relationship between recipient bed vascularity and the viability of ischemic-reperfusion flap,highlight the importance of recipient bed nourshment Methods:40 rats were divided into A (no silicone sheet implanted between flap and recipient bed)and B group (silicone interposed between flap and recipient bed).Different superficial abdomen vessels occlusion time(1h,6h,10h and permanent divided,respectively)was made,and flap temperature and the histopathology was studied on time Flap survival area were measured 7 days postoperatively Result:No significant difference of flap temperature and histopathology were found between A and B for 1h ischemia flap but significant differences were showed for 6h,10h and permanent ischemia flap Interestingly,it appeared the same flap surrival area between 10h and permenent ischemia in A groups,and lots of leukocyter were deposited on subcutaneous layer Conclusion:Recipient bed vascularity have nourishing effect on ischemic reperfusion flaps Leukocytes may damage this effect