Tang J T, Godlewski G, Rouy S
Laboratoire d'Anatomie Expérimentale, Faculté de Médecine Montpellier-Nîmes, Université de Montpellier I, Nîmes, France.
J Clin Laser Med Surg. 1997;15(4):175-9. doi: 10.1089/clm.1997.15.175.
The process of aneurysm formation after laser welding is described.
The mechanism of aneurysm formation after laser-assisted microarterial anastomosis is presently unclear.
A series of 830-nm diode-laser-assisted longitudinal aortorrhophy with a condition of 400 to 500 J/mm2 for 1 cm length of anastomosis versus conventional manual anastomoses were performed in 90 Wistar rats. To compare this technique with normal media process, a histologic examination of aneurysm formation was conducted.
The results show that there are two important factors that cause aneurysm formation after laser-assisted anastomosis: 1) the vessel wall is damaged by laser heating; 2) proliferation of collagen fiber at the adventitia is absent during media reconstruction.
描述激光焊接后动脉瘤形成的过程。
目前，激光辅助微动脉吻合术后动脉瘤形成的机制尚不清楚。
对90只Wistar大鼠进行了一系列830纳米二极管激光辅助的纵向主动脉修补术，吻合长度为1厘米，能量条件为400至500焦/平方毫米，与传统手工吻合术进行对比。为了将该技术与正常中膜过程进行比较，对动脉瘤形成进行了组织学检查。
结果表明，激光辅助吻合术后导致动脉瘤形成有两个重要因素：1）血管壁因激光加热而受损；2）中膜重建过程中外膜胶原纤维无增殖。
