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1.
目的对神经外科硕士研究生进行显微镜下操作的训练。方法 先进行显微镜下的基础操作训练,再行大鼠颈总动脉 端 - 侧吻合实验。结果 所有实验大鼠吻合血管愈合且通畅。取吻合口周围血管横断面进行 HE 染色,显示血管吻合口见 内皮细胞生长良好,血管通畅率为 100%,未见血管狭窄及假性动脉瘤。结论 通过显微镜下基础操作训练及建立大鼠颈 总动脉端侧吻合动物模型的方法,对神经外科硕士研究生进行显微镜下操作的训练,为其应用到临床打下坚实基础。  相似文献   

2.
目的探讨改良式吻合法行动静脉内瘘术中的手术方法,评价其临床效果。方法回顾性分析36例改良式吻合法病例,并与同期21例常规端侧吻合病例进行比较。结果36例改良式吻合法均一次性吻合成功,平均血管吻合时间(15±3)min,随访2年,2年通畅率为97.2%,未出现明显并发症;21例常规端侧吻合病例一次吻合成功率为95.2%,平均血管吻合时间(38±2)min,2年通畅率为85.7%,内瘘闭塞3例。结论改良式吻合法是一种理想的内瘘吻合技术,手术方法简单、手术时间短、效果好、并发症少,适合临床应用并推广。  相似文献   

3.
目的建立大鼠颈总动脉端-侧吻合模型,以期对欲进行显微血管吻合训练或相关实验的同道提供帮助。方法成年SD大鼠10只,将左侧颈总动脉远端穿过颈前肌肉群和气管之间的隧道, 与右侧颈总动脉行端-侧吻合。 结果成功建立大鼠颈总动脉端-侧血管吻合动物模型,手术成功率约为100%,平均吻合所需8针,平均血管吻合所需时间(35±5)min。吻合3个月后观察通畅率100%,HE染色示吻合口愈合良好。 结论吻合成功的关键是提高显微操作技术水平,同时注意保护术野中小的血管和神经。此模型可以较好的应用于显微血管缝合训练。  相似文献   

4.
目的:分析血液透析用前臂动静脉内瘘吻合手术经验,提高建立理想血管通路的成功率。方法:回顾性分析本院肾内科于1999年7月-2006年12月105例血液透析患者行内瘘吻合手术的临床资料,应用单因素方差分析和χ^2检验,统计并比较直视下钛轮钉吻合法,显微镜下端端吻合法及显微镜下端侧吻合法的手术时间和2年内瘘通畅率。结果:3组在手术时间上差异无显著性。2年内瘘通畅率分别为钛轮钉吻合法74.3%.端端吻合法88.6%,端侧吻合法达94.2%,组间比较差异有显著性(P〈0.05)。结论:前臂端侧吻合是动静脉内瘘的首选方法。  相似文献   

5.
目的 :对喉移植模型进行改进。方法 :大鼠 10 8只分为A、B、C 3组 ,术中供体在喉体暴露后于第三气管环水平做气管切开 ,移植时 ,用棉片湿温冷保存液包裹离体喉 ,并用冰块放置在移植喉的四周 ,术中尽量不要触动受体鼠的喉 ,采用不同的血管吻合方法 ,并观察血管吻合的通畅率。结果 :A组需要时间 45min~ 1h ;B组手术时间 30min以内 ;C组吻合时间减至 2 0min以内。大鼠动脉通畅率为 86 % ,静脉通畅率为 80 % ,静脉吻合改为套管吻合 ,静脉通畅率可达到 10 0 %。结论 :通过对大鼠喉移植技术的改进可以缩短手术时间 ,提高血管通畅率。可避免大鼠因分泌物增多而死亡 ,从而尽可能缩短供体喉的热缺血时间 ,提高受体鼠的存活率和生存质量 ,有利于实验的观察。  相似文献   

6.
目的研究采用血管斜形端端吻合进行断指再植的临床效果。方法收治断指患者380例共断指575指,离断时间20-720 min,平均180 min。随机分为观察组和对照组,观察组采用斜形端端吻合血管方法再植,对照组采用传统垂直端端吻合血管方法再植。术后给予抗感染、抗凝及抗血管痉挛药物治疗。发生动脉或静脉危象后给予抗血管痉挛或溶栓药物治疗,未见明显改善行手术探查。结果观察组术后出现动脉危象10例,静脉危象13例,动脉危象发生率5.2%,静脉危象发生率6.7%;对照组术后出现动脉危象18例,静脉危象22例,动脉危象发生率9.5%,静脉危象发生率11.7%。观察组再植后指体坏死6例12指,成活率95.9%;对照组植后指体坏死14例21指,成活率92.6%。统计学分析观察组与对照组动脉危象发生率、静脉危象发生率及再植成活率有显著差异,P0.05。结论采用血管斜形端端吻合进行断指再植可明显提高血管通畅率及再植成活率。  相似文献   

7.
用金葡萄菌在两组大白鼠腹股沟区造成污染或感染模型,在污染或感染环境下行股动,静脉显微吻合。观察吻合血管15d通畅情况。结果显示:在污染区经清创后,吻合小血管15d通畅率为动脉90.6%;静脉88.5%。感染多内小血管吻合15d通畅率明显下降;动脉29.1%;静脉43.3%。  相似文献   

8.
目的 利用生物降解材料建立新的显微血管吻合方法。方法 制作生物降解显微血管桥接套管;用该套管以非缝合方法吻合家兔股动脉;观察术后即刻和术后两周血流通畅率以及吻合部位病理改变。结果 吻合一根口径为0.8~1.2mm的动脉时间为5~7min。即刻和两周血流通畅率为100%。病理观察未见附壁血栓形成,吻合口处血管内膜均为内皮细胞覆盖。结论 本方法吻合显微血管简捷、可靠,无需显微缝合,所用生物降解桥接套管制作简单,携带方便,尤其适于在有限医疗条件下完成显微血管修复手术。  相似文献   

9.
赵荣  杨继庆  蔡振杰 《医学争鸣》2002,23(10):900-903
目的 应用线形CO2激光器和血管支撑物进行小血管吻合,观察术后血管吻合口的远期通畅率、动脉瘤发生率及物理性质。方法 家兔104只,随机分为8组,每只家兔的左颈动脉离断后用激光进行吻合,右颈动脉则用缝线进行吻合,在术后1h,24h,3d,1,2,4,8和12wk时分别再次麻醉动物,解剖颈动脉,观察血管通畅情况,并测试吻合口的耐压强度和抗拉强度。结果 术后血管吻合口的即刻通畅率均为100%;远期通畅率,激光吻合组为98%,缝线吻合组为94%;动脉瘤发生率,激光组为3%,缝线组为0。耐压强度测定,术后1wk内激光组显著高于缝线组,2 wk内,激光组显著低于缝线组,4wk后两组间无差异。结论 应用线形CO2激光器和血管支撑物进行小血管的吻合是一项可行的技术,它在远期通畅率、动脉瘤发生率及血管物理性质几方面都取得了令人满意的结果。  相似文献   

10.
目的:对喉移植模型进行改进。方法:大鼠108只分为A、B、C3组,术中供体在喉体暴露后于第三气管环水平,做气管切开,移植时,用棉片湿温冷保存液包裹离体喉,并用冰块放置在移植喉的四周,术中尽量不要触动受体鼠的鼠,采用不同的血管吻合方法,并观察血管吻合的通畅率。结果:A组需要时间45min-1h;B组手术时间30min以内;C组吻合时间减至20min以内,大鼠动脉通畅率为86%,静脉通畅率为80%,静脉吻合改为套管吻合,静脉通畅率可达到100%。结论:通过对大鼠喉移植技术的改进可以缩短手术时间。提高血管通畅率,可避免大鼠因分泌物增多而死亡,从而尽可能缩短供体喉的热缺血时间,提高受体鼠的存活率和生存质量,有利于实验的观察。  相似文献   

11.
目的 探讨弹性纤维在损伤后的变化过程。方法 在手术显微镜下将90只大鼠股动脉横行切断后行端端吻合术,在手术后3、7、14、21、30、90d,结果 用weigert弹性纤维染色及甲酸消化法扫描电镜观察弹性纤维在动脉吻合术后的重构。结果动脉吻合术后弹性纤维的重构分为:静止期、增生期、重建期。在静止期吻合口弹性纤维没有增生;在增生期可见大量新生的弹性纤维;在重建期可见弹性纤维的结构发生变化,而相对含量不变。结论 动脉壁的弹性纤维在动脉吻合术后经历了重建过程,吻合后弹性纤维的修复为新生内膜的模式。动脉吻合术后30d弹性纤维的含量明显增高及弹性纤维的形态结构趋于正常。  相似文献   

12.
Background The operating microscopes have been applied to modern surgery for nearly a century.However,generations of microsurgeons have to flex their necks and fix their eyes on the eyepieces of a microscope continually that leads to physical and mental fatigue during a long operation.Stereoscopic three-dimensional (3D) media provides more ergonomic working environment,subsequently,resulting better performance in tasks and more accurate judgment.In this study,an alternative method of magnification was analyzed using a three-dimensional microsurgical video system and compared with the traditional method under microscopy to evaluate the availability and feasibility of a 3D microsurgical video system for microvascular anastomosis.Methods Forty Sprague-Dawley rats were randomly divided into four groups with each of 10.In 20 rats,10 femoral artery anastomoses with a conventional microscope (arterial microscope group) were compared with that of 10 femoral artery anastomoses with a 3D microsurgical video system (arterial 3D group).For the other 20 rats,10 femoral vein anastomoses using a conventional microscope (venous microscope group) were compared with that of 10 femoral vein anastomoses using a 3D microsurgical video system (venous 3D group).The arterial and venous microscope groups were considered to be the control groups.The arterial and venous 3D groups were the experimental groups.The examined criteria were as follows:anastomotic time,patency right after the procedure and 10 days later,number of sutures,vessel caliber,and pathological features.Results There were no differences between the operating equipment with respect to vessel caliber,anastomotic time,patency rate,number of sutures,and pathological changes in either the small arteries or veins.The average arterial anastomotic time of the arterial microscope group and arterial 3D group was 34.21 and 33.87 minutes,respectively (P >0.05).The average venous anastomotic time of the venous microscope group and venous 3D group was 29.95 and 31.50 minutes,respectively (P >0.05).Conclusions A small vessel anastomosis can be performed successfully with the help of a 3D display system.Although the vascular anastomotic time did not demonstrate a significant difference between the groups,the 3D microsurgical video system offers another option to improve the working environment for surgeons.Further development of our 3D monitoring system should focus on a higher resolution and better flexibility.  相似文献   

13.
目的:观察野百合碱(crotaline)诱导慢性肺损伤的病理变化及探讨肺动脉高压形成机理.方法:24只SD大鼠一次性皮下注射crotaline 50 mg/kg体重,建立肺动脉高压动物模型.通过光学显微镜观察crotaline对肺动脉血管内皮细胞的损伤和肺部的病理改变,并分析病变之间以及它们与肺动脉高压的关系.结果:注射crotaline可使肺动脉血管内皮细胞损伤,并诱导肺动脉平滑肌明显增生,导致肺动脉血管壁的重建和右心室肥厚.结论:肺动脉血管壁的重建是肺动脉高压的主要病理基础.  相似文献   

14.
本文报告了应用显微外科技术作断指再植手术34例,成活率为84.78%,其中末节指再植成活率为94.11%。认为细致的显微镜下清创,熟练掌握直径为0.3~0.4mm 的血管吻合技术,及时处理血管危象,为断指再植成功的关键。并对适应症的选择,清创及手术步骤等进行了讨论。  相似文献   

15.
[目的]介绍同时应用左内乳动脉和桡动脉移植物行冠状动脉搭桥的早期效果和临床经验。[方法]同时应用左内乳动脉和桡动脉行冠状动脉搭桥手术21例。常规体外循环下搭桥18例,非体外下搭桥3例。平均每例搭桥(4.21±0.98)支,搭动脉桥2.6支。[结果]全组无手术死亡。随诊未发现心绞痛复发,除1例心衰外,无其他心脏事件发生,无心电图缺血表现发生。无前臂缺血、功能障碍等并发症发生。[结论]内乳动脉和桡动脉搭桥的近期效果显著。  相似文献   

16.
Objective To assese the healing of stoma after magnetic anastomosis for the reconstruction of biliary-enteric continuity under severe inflammation. Methods Acute bile duct injury was constructed as a bile peritonitis model in mongrel dogs(n=32). Magnetic anastomosis(group A, n=16) and traditional suture anastomosis(group B, n=16) were performed to reconstruct the biliary-enteric continuity in one stage. Half of the dogs in each group were euthanized on the 30 th postoperative day, and the other half on the 90 th postoperative day to harvest the stoma region. The healing conditions of the stoma after the 2 anastomotic approaches were observed with naked eyes, under light microscope and scanning electron microscope. Results The stoma leakage rate(50% versus 0% on the 30 th postoperative day, 37.5% versus 12.5% on the 90 th postoperative day, both P〈0.05) and stenosis degree(13.9%±0.3% versus 7.1%±0.3% on the 30 th postoperative day, 17.2%±0.4% versus 9.4%±0.4% on the 90 th postoperative day, both P〈0.01) were significantly higher in group B than in group A. Compared with traditional manual anastomoses, the histological analysis under light and electron microscope showed a more continuous stoma with more regular epithelium proliferation and collagen arrangement, less inflammation in group A. Conclusions Magnetic anastomosis stent ensures better healing of the stoma even under the circumstance of severe inflammation.  相似文献   

17.
Repair of arterial injuries has decreased the amputation rate to 15% from 50%, which was prevalent when ligation was practised. Methods of treatment include lateral repair, resection of damaged area with end-to-end anastomosis, and resection and graft, with or without the assistance of partial or complete cardiopulmonary bypass. Lacerations of large arteries (aorta, iliac) may be treated by lateral repair. Lacerations of smaller arteries are best treated by resection and anastomosis, or by resection and graft. True and false aneurysms and arteriovenous fistulas are best treated by resection and restoration of blood flow. “Spasm” in an artery is frequently due to intimal rupture or subintimal hemorrhage, and likewise requires resection and anastomosis in many instances. Clinical examples of each type of injury are presented. Angiography is of great value in establishing the precise abnormality present, its location, the degree of collateral circulation, and the result achieved by surgery.  相似文献   

18.
舌黏膜血管铸型扫描电镜观察及其临床意义   总被引:1,自引:0,他引:1  
目的 为中医舌诊和外科舌瓣设计提供解剖学依据。方法 6具新鲜的胎儿尸体经血管铸型后在扫描电镜下观察。结果 舌深动脉长支和舌背动脉终支在舌黏膜下形成一完整的致密动脉网,跨越舌中线,成为一整体。由动脉网发出微动脉支进入舌黏膜内,形成黏膜内的毛细血管网和各种乳头毛细血管丛。结论 舌黏膜两侧血管吻合丰富,可选用舌黏膜肌瓣修复创面,并为舌诊提供了形态学基础。  相似文献   

19.
目的:总结同种异体原位肝移植中肝动脉吻合的经验。方法:回顾性分析11例原位肝移植中影响肝动脉吻合的因素和处理技巧。结果:7例行供、受者肝固有动脉端端吻合,2例供者肝总动脉与受者肝固有动脉吻合.2例供者肝总动脉与受者脾动脉吻合;术后彩色多普勒超声监测显示肝动脉血流通畅,均未发现有血栓形成或肝动脉狭窄,现存活8例。结论:合理选择吻合用血管是避免术后发生血栓形成和动脉狭窄的关键。  相似文献   

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