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1.
腹主动脉瘤腔内治疗的实验研究   总被引:7,自引:2,他引:5  
目的 探讨腹主动脉瘤的腔内血管外科治疗方法。方法 将健康杂种犬 9只通过剖腹手术建立 4个肾动脉平面以下的腹主动脉瘤模型 (Ⅰ组 ) ,5个肾动脉平面以上的腹主动脉瘤模型 (Ⅱ组 ) ,然后经髂动脉给Ⅰ组置入支架型人工血管隔绝其腹主动脉瘤 ,对Ⅱ组则先重建双侧肾动脉和肠系膜上动脉的血流 ,然后再自髂动脉置入支架型人工血管 ,隔绝瘤体。术后观察血管通畅情况及动物存活情况 ,2 ,3个月后处死动物 ,检查支架型人工血管通畅及血管内皮生长情况。结果 腹主动脉瘤成模率为 10 0 % ,术后Ⅰ组 4只犬成活良好 ;Ⅱ组中 1只成活良好 ,另 4只分别于术后 4h ,1d ,3d ,4d后死亡。 2 ,3个月后处死动物 ,解剖发现支架型人工血管通畅 ,主动脉瘤体萎缩 ,光镜和电镜检查显示支架内及支架两端血管内皮生长良好。结论 腔内血管外科技术能有效地治疗主动脉瘤 ,特别是为肾动脉平面以上的主动脉瘤的治疗提供了一种新的方法。  相似文献   

2.
近年来腔内隔绝术及肾动脉支架置入术已成为治疗腹主动脉瘤及.肾动脉狭窄的重要方法之一.传统开放手术的指征主要由患者全身情况而定,而支架置入术的主要根据是患者解剖学形态特点.腹主动脉瘤及肾动脉狭窄患者多全身情况不佳,开放手术风险极大,而介入手术创伤小,对患者全身情况要求小.我院于2008年1月11日对1例腹主动脉瘤、髂内动脉瘤合并左肾动脉狭窄患者施行了左肾动脉支架置入及腹主动脉腔内支架隔绝术,总结报道如下.  相似文献   

3.
近年来腔内隔绝术及肾动脉支架置入术已成为治疗腹主动脉瘤及肾动脉狭窄的重要方法之一。传统开放手术的指征主要由患者全身情况而定,而支架置入术的主要根据是患者解剖学形态特点。腹主动脉瘤及肾动脉狭窄患者多全身情况不佳.开放手术风险极大,而介入手术创伤小,对患者全身情况要求小。我院于2008年1月11日对1例腹主动脉瘤、髂内动脉瘤合并左肾动脉狭窄患者施行了左肾动脉支架置入及腹主动脉腔内支架隔绝术。总结报道如下。  相似文献   

4.
目的 探讨肾动脉下腹主动脉瘤腔内修复术的价值。方法 中山大学附属第一医院自2001年12月至2005年4月.共手术治疗42例肾动脉下腹主动脉瘤病人。采用单侧或双侧股动脉入路植入带膜支架对肾动脉下腹主动脉瘤进行腔内修复。结果42例肾动脉下腹主动脉瘤病人接受了血管腔内修复术,手术全部成功。围手术期死亡2例,其中1例为术前腹主动脉瘤破裂休克时间较长,已经合并急性肾功能不全;另1例为术后出现脑血管意外,2例均在术后3d死亡。其余40例随访1-40个月,全部存活。结论 肾动脉下腹主动脉瘤腔内修复术是一种安全、有效的治疗方法,长期疗效仍有待进一步观察。  相似文献   

5.
腹主动脉瘤腔内修复术中特殊近端锚定区的处理   总被引:3,自引:0,他引:3  
目的探讨腹主动脉瘤腔内修复术(EVAR)中特殊近端锚定区的处理方法。方法1997年7月至2005年7月对41例特殊类型腹主动脉瘤(瘤颈过短、严重成角、严重钙化、附壁血栓、形态不规则等)的腔内修复术中,根据情况分别采用近端裸支架跨肾动脉技术、覆盖部分肾动脉并肾动脉支架成形技术、针对成角选择合理产品、近端裸支架内支撑技术、近端延长支架型血管内支撑技术、“凹口”状支架型血管保留肾动脉技术来处理特殊近端锚定区的病变。结果41例EVAR中原发性近端Ⅰ型内漏发生率17.1%(7/41),随诊发现原发性内漏4例自愈,3例转化为持续性内漏,另发现4例继发性内漏。术后30d近端Ⅰ型内漏发生率17.1%(7/41)。无中转开腹手术及术中瘤体破裂、肾梗死等情况发生。结论对特殊近端锚定区的病例,通过相关技术处理可以使之适合腔内治疗。  相似文献   

6.
猪霍乱沙门菌所致人感染性动脉瘤的腔内治疗   总被引:1,自引:0,他引:1  
目的 评价猪霍乱沙门菌所致人感染性动脉瘤的诊断治疗方法.方法 回顾性分析2000年1月至2008年12月收治的8例猪霍乱沙门菌感染性动脉瘤的诊断治疗方法及效果.结果 感染性腹主动脉瘤6例,胸主动脉瘤和胭动脉瘤各1例,均行人工血管内支架腔内修复术;放置直型人工血管内支架6例,分叉型人工血管内支架2例,手术成功率为100%,无围手术期30 d内死亡或并发症发生;所有患者均恢复满意,出院后口服抗菌药物,随访时间15~36个月,4例疗效满意,影像学及实验室检查无感染复发征象,3例感染复发行局部感染灶清创引流后痊愈,1例术后3个月因腹主动脉瘤破裂死亡.结论 猪霍乱沙门菌是侵袭性和毒力较强的菌株,对于猪霍乱沙门菌感染性动脉瘤,腔内修复、应用抗菌素并密切随访,是一种可供选择的治疗方式.  相似文献   

7.
外科治疗腹主动脉瘤482例   总被引:12,自引:0,他引:12  
Chen F  Wang Y  Fu W 《中华外科杂志》2001,39(11):835-837
目的 探讨提高腹主动脉瘤手术安全性的方法。方法 总结了自1960年1月-2001年3月482例腹主动脉瘤切除人工血管移植以及腹主脉瘤腔内隔绝术的经验。本组461例肾动脉水平以下腹主动脉瘤,采用动脉瘤切除人工血管移植430例,31例采用腹主动脉瘤腔内隔绝术,21例胸、腹主动脉瘤采用Crawford方法切除。采用腹膜外途径21例,小切口15例,脐下弧形切口11例。结果 随着腹膜后途径及脐下弧形切口和小切口等应用,动脉瘤近端血流控制,动脉瘤切除以及缝合修补和腔内隔绝术等方法的更新,使手术的危险性明显降低,总手术病死率5.2%,5年存活率达74.4%。结论 手术技术和麻醉监护的进步,使腹主动脉瘤的外科治疗变得更安全、迅速和方便。  相似文献   

8.
腹主动脉瘤形态对腔内治疗的影响   总被引:1,自引:0,他引:1  
目的:确定适于腔内治疗的腹主动脉瘤各项几何参数的大致分布;分析各项几何参数的相关关系,寻找其临床意义;总结腹主动脉瘤人工血管内支架移植术经验,检验其手术适应证。方法:选择128例腹主动脉瘤人工血管内支架移植术,通过螺旋CT和DSA检查获得腹主动脉瘤各项几何参数,对各项几何参数的相关性进行统计学研究。总结病例选择标准并分析其疗效。结果:瘤体直径与近端瘤颈直径正相关,相关系数r=0.559,P<0.01;与瘤腔直径正相关,相关系数r=0.773,P<0.01。近端瘤颈长度<10mm的23例手术成功,未出现移位、近端I型内漏或肾动脉闭塞等并发症。结论:①瘤体直径越大,则近端瘤颈直径越大。瘤体直径较大提示瘤腔直径较大,以及由肠系膜下动脉反流引起的Ⅱ型内漏的发病率较低。②近端瘤颈长度<10mm而瘤颈情况良好病者可考虑腔内手术。  相似文献   

9.
为了验正腹主动脉瘤 (AAAs)腔内修复术并发症的危险因素 ,对 6 4例腹主动脉瘤腔内修复术病人进行研究。对病人个体特征 ,动脉瘤的解剖特点 ,手术方式及手术小组经验与死亡率、内漏发生率及其它并发症做相关分析。围手术期并发症依AdHoc委员会推荐标准进行分级 ,应用Lo gistic回归分析方法评价危险因素与临床结果的相关性。结果 :43%的病人出现并发症 ,分别为轻 (2 4% )、中(5 5 % )、重 (2 1% )三种。美国麻醉学会 (ASA)危险级别的3 ,4级及高龄均为造成围手术期死亡和并发症的独立危险因素。附加操作或应用跨肾动脉裸支…  相似文献   

10.
复杂主动脉病变的腔内血管外科治疗   总被引:3,自引:1,他引:2  
目的 探讨复杂主动脉病变的腔内血管外科治疗方法。方法 对21例合并有内脏动脉缺血等复杂的主动脉病变,双球管定位下经锁骨上动脉到股动脉交换导丝以确保真腔内植入带膜支架,对真腔完全被假腔压闭的患者采取真腔内加压推进以通过导丝,用超长带膜支架来封堵大破口治疗夹层合并巨大假性动脉瘤形成,对夹层合并腹主动脉瘤患者采取血管腔内技术联合开腹手术等方法。结果 术后内漏3例,其中2例7 d后停止,1例漏血持续存在。3例主动脉创伤术后完全康复,余18例复杂主动脉夹层术后即时造影示瘘口已被完整覆盖,假腔无血漏入,内脏动脉等恢复真腔供血。18例中6例合并肠管缺血,3例合并肾动脉缺血,3例肠管缺血、肾动脉缺血,2例腹主动脉真腔完全被假腔压迫,以及2例合并下肢缺血术后均逐渐恢复,无脏器及肢体缺血坏死发生。2例合并腹主动脉瘤夹层行支架型人工血管封闭夹层破口后行开腹手术切除腹主动脉瘤、人工血管置换。16例随访5~36个月,平均22.3月,1例内漏持续存在,但假腔未继续加大,其余患者存活良好。结论 对复杂的主动脉病变的治疗,通过对腔内血管外科技术进行改进,并适当结合传统手术方法,使某些过去被认为不能够治疗的复杂主动脉病变可得以成功治疗。  相似文献   

11.
Aortoenteric fistula (AEF) has been described after endovascular stent graft repair of abdominal aortic aneurysms (EVAR). AEF after EVAR has been associated with aneurysm growth, endoleak, migration, and aortic inflammation. We report a patient with an AEF presenting 2 years after EVAR with two abscesses in the right leg. A computed tomographic scan showed a gas-filled thrombus lining the right limb of his graft. At conversion, no endoleak, device migration, or residual aneurysm sac was found. AEF can occur after endoluminal stent graft (ELG) in the absence of aneurysm growth, endoleak, migration, or inflammation. AEF can cause ELG infection and extremity infection.  相似文献   

12.
Migration and endoleaks after endovascular exclusion of an infrarenal abdominal aortic aneurysm may lead to long-term failure of the stent graft. We report a successful case of a novel technique that combined open and endovascular surgery to address the issues of migration and endoleak in the repair of an abdominal aortic aneurysm. The hybrid graft, consisting of a proximal, conventional Dacron graft and two distal endoprosthesis limbs, was designed to reduce aortic cross-clamp time in aortic procedures. This is the first reported clinical experience with this new hybrid vascular graft for the treatment of an abdominal aortic aneurysm.  相似文献   

13.
We report a case of aortoduodenal fistula 5 years after uncomplicated endovascular abdominal aortic aneurysm repair. The diagnosis was confirmed by abdominal computed tomography scan and esophagogastroduodenoscopy. The patient was successfully treated with primary duodenal repair, removal of the infected graft, in situ placement of a bifurcated graft, and omental interposition. Review of the literature identifies this as one of very few documented aortoduodenal fistulas after endovascular aneurysm repair. Fistulization occurred despite accurate stent graft placement without migration, endoleak, or aortic sac size enlargement on annual postoperative imaging studies.  相似文献   

14.
目的:总结一体式覆膜支架在腹主动脉以及髂动脉病变中的应用效果。方法:回顾性分析应用一体式腹主动脉覆膜支架腔内修复腹主动脉瘤15例、髂动脉瘤5例及腹主动脉或髂动脉夹层5例的临床资料。结果:平均时间42.4 min,手术成功率100%(25/25)。术后无I、III型内漏,发生髂动脉血栓形成1例,围术期无死亡病例。随访3~16个月复查无动脉瘤复发和II型内漏。结论:一体式覆膜支架是腹主动脉瘤和夹层动脉瘤腔内治疗方法的一种较好选择,具有快速、简单、有效的优点;其远期疗效需进一步观察。  相似文献   

15.
The purpose of this study was to present a novel treatment method for repair of a type III endoleak due to separation of modular components of an AneuRx (Medtronic AVE, Sunnyvalle, CA) stent graft as a result of graft kinking. A 73-year-old male had undergone endovascular repair of a 8.2-cm abdominal aortic aneurysm (AAA) 2 years previously. An aortic extender cuff was required to secure the proximal graft. Computed tomographic (CT) follow-up revealed a type III endoleak at 6-month follow-up. Plain radiographs showed separation between the main graft body and the aortic extender cuff. A second custom-made 28 mm × 5.5cm aortic extender cuff was placed to seal the type III endoleak. Follow-up CT showed a persistent endoleak with an increase in AAA size to 10.5 cm. The patient underwent remedial AAA repair with an aortouniiliac endograft placed within the previous stent graft and a femorofemoral bypass. At 3-month follow-up there was no detectable endoleak. This constitutes an alternative endovascular therapy for modular device separation (type-III endoleak) after endoluminal AAA repair in patients who cannot undergo repair with a second bifurcated graft.  相似文献   

16.
Unlike open aortic aneurysm repair, follow-up is vital for endovascular aneurysm repair. If there is no perigraft flow or endoleak after endograft placement, the natural history is a decrease in aneurysm size. However, a significant number of aneurysms after endograft repair enlarge without apparent endoleak, and ruptures have occurred in this situation. Aneurysms so treated also can develop a late, secondary endoleak that leads to rupture. Late stent deformation has been noted in abdominal and thoracic applications, and deformation can ultimately lead to graft thrombosis, endoleak, and aneurysm rupture. For these reasons, regular postoperative imaging will likely be needed for the life of the patient after endovascular aortic aneurysm repair, and it must be capable of accurately detecting endoleak, aneurysm expansion, graft migration, and graft deformation. As with the entire field of endovascular surgery, imaging techniques and recommendations regarding their use are changing rapidly. However, a combination of examinations appears superior to any single test. Only long-term follow-up data can determine which methods will become standard, but physical examination, abdominal radiographs, and spiral computed tomography (CT) with specialized 3D reconstruction protocols are the current gold standard. In centers of excellence, color or power Doppler ultrasound is a useful adjunctive study and ultimately may decrease the required frequency of more expensive studies such as CT with specialized protocols.  相似文献   

17.
HYPOTHESIS: Little information about the long-term results of endovascular abdominal aortic aneurysm repair is available. This study was performed to evaluate the long-term data of patients treated with the first generation of commercially available stent grafts. DESIGN: Multicenter registry. SETTING: Sixty-two European centers that participated in the EUROSTAR (EUROpean collaborators on Stent-graft Techniques for abdominal aortic Aneurysm Repair) registry. PATIENTS: A total of 1190 patients with a follow-up of up to 8 years, who underwent endovascular abdominal aortic aneurysm repair with a stent graft (Stentor or Vanguard). INTERVENTION: Elective endovascular abdominal aortic aneurysm repair. MAIN OUTCOME MEASURES: The morbidity and mortality data of patients treated with the first-generation stent graft who enrolled in the EUROSTAR registry were analyzed. Incidence rates of complications were calculated to quantify annual risks. Life-table analyses and multivariate Cox proportional hazards models were used for the survival analysis. RESULTS: Conversion to open repair, aneurysm rupture, all-cause death, and aneurysm-related death occurred in 7.1%, 2.4%, 19.9%, and 3.0% of the patients, respectively. The cumulative percentage of the combined outcome event, conversion-free and rupture-free survival, after 8 years was 48.0%. Procedure-related complications that frequently occurred were endoleak (13.0 cases per 100 patient-years), stenosis/thrombosis (4.6 cases per 100 patient-years), and stent migration (4.3 cases per 100 patient-years). CONCLUSIONS: Patients treated with the first generation of stent grafts will need lifelong surveillance because of a considerable risk of late complications. How these findings translate to the outcome of newer-generation stent grafts is unknown. For this reason, vigilant surveillance remains indicated in all patients who undergo endovascular abdominal aortic aneurysm repair.  相似文献   

18.
自制国产化支架-移植物腔内治疗腹主动脉瘤的实验研究   总被引:6,自引:2,他引:4  
目的 探讨自制国产化支架、移植物在治疗犬腹主动脉瘤中的作用。方法 以国产镍钛合金丝纺织成网状管型支架,外套以国产真丝涤纶交织人造血管,装入导鞘制成支架-移植物系统;用胰蛋白酶灌注犬肾下腹主动脉段形成动脉瘤模型;用血管腔内技术将支架-移植物置入腹主动脉内,隔绝血流分别于第1周、1个月、3个月和6个月末观察通畅度及新生内膜生长。结果 20条模型犬接受手术,成功19条,支架置入后能充分展开并恢复形状,1个月末,支架内表面90%被新生内膜覆盖,3个月末几达100%,6个月末,79%的支架保持通畅,无移位、内漏等并发症。结论 自制国产化支架、移植物有良好的生物相容性和较高的通畅率,可用于腹主动脉瘤的治疗。  相似文献   

19.
We report the successful endovascular repair of a ruptured abdominal aortic aneurysm (AAA) in a multimorbid patient 8 months after endovascular abdominal aortic aneurysm repair (EVAR). A 74-year-old man with a history of EVAR 8 months earlier presented with hypotension, severe back pain, and tenderness on abdominal palpation. A contrast-enhanced computed tomographic scan showed a large retroperitoneal hematoma and confirmed the diagnosis of secondary abdominal aortic rupture. Because the patient had severe comorbidities, the endovascular method was chosen for further management. Two stent grafts were placed appropriately to eliminate a type 1a and a type 3 endoleak owing to modular separation of the left iliac graft limb from the main body stent graft. An additional self-expanding stent was deployed in the solitary right renal artery to open its origin, which was partially overlapped by the proximal cuff. The patient was discharged on the tenth postoperative day and is alive and well 1 year postoperatively. This case indicates that endovascular repair is feasible not only in cases of primarily ruptured AAAs but also in secondarily ruptured AAAs after failure of EVAR.  相似文献   

20.
Aneurysm rupture after endovascular repair using the AneuRx stent graft   总被引:9,自引:0,他引:9  
OBJECTIVE: The purpose of this study was to determine the cause and frequency of aneurysm rupture after endovascular aneurysm repair. METHODS: We reviewed each patient who sustained aneurysm rupture among all patients enrolled for endovascular aortic aneurysm repair in phases I, II, and III of the US AneuRx Multicenter Clinical Trial from June 1996 through October 1999. RESULTS: A total of 1067 patients were enrolled for endovascular aneurysm repair. The AneuRx stent graft was successfully implanted in 1046 patients (98%). Endovascular repair was unsuccessful in 21 patients (2%); 13 patients (1%) were converted to open aneurysm repair. Among these, two patients (0.2%) sustained aneurysm rupture due to procedure-related instrumentation and underwent open surgical conversion. Aneurysm rupture has occurred in seven patients (0.7%) 3 weeks to 24 months (mean, 16 months) after successful endovascular repair. Four patients survived open surgical repair, and three patients died within 30 days. Overall rupture-related mortality was 0.5% and included late deaths after rupture. Before rupture, two patients had endoleak and aneurysm enlargement, and five patients had no endoleak and no aneurysm enlargement. After aneurysm rupture all seven patients had evidence suggesting that there was poor fixation of the stent graft at the proximal distal, or iliac junction fixation sites. The two patients with endoleak declined recommended open surgical or endovascular repair, which could have prevented aneurysm rupture. In retrospect, the five patients without endoleak could potentially have avoided rupture with better patient selection, better stent graft positioning, or reinforcement of fixation points with stent graft extenders. The probability of no aneurysm rupture for all patients undergoing endovascular repair is 0.996 +/- 0.002 at 1 year and 0.974 +/- 0.011 at 2 years by life table analysis with the longest follow-up of 41 months. CONCLUSION: The early risk of aneurysm rupture after endovascular aneurysm repair is low. However, the possibility of rupture persists even in patients with no endoleak after the procedure. Therefore, all patients treated with endovascular aneurysm repair should continue to be monitored after the procedure. Patients with evidence suggesting insecure stent graft fixation should undergo further endovascular treatment or open surgical repair.  相似文献   

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