局部麻醉穿刺下完全无对比剂腔内修复腹主动脉瘤1例

目的 探讨对比剂过敏高危腹主动脉瘤患者接受局部麻醉穿刺下完全无对比剂主动脉腔内修复术(EVAR)的可行性.方法 对1例对比剂过敏腹主动脉瘤患者,在不使用对比剂、局部麻醉穿刺条件下实施EVAR术.结果 手术获成功.术后MRI随访结果显示,患者腹主动脉瘤完全隔绝,无内漏,覆膜支架内血流通畅,双侧肾动脉显影良好.结论 局部麻醉穿刺下完全无对比剂EVAR术治疗对比剂过敏伴全身麻醉禁忌高危腹主动脉瘤患者安全有效,但严格掌握适应证、术前充分评估是手术成功的关键.     

腹主动脉瘤腔内修复术后内漏的研究进展

腹主动脉瘤（abdominal aortic aneurysms，AAAs）是血管外科的常见疾病，其经典治疗方法是AAAs切除、人工血管移植术，但手术创伤大，不适于存在心、肺、肾等严重合并症的高危患者。1990年Parodi等首创了AAAs腔内修复术（endovascular aneurysm repair，EVAR），因其独特的微创优势被迅速推广，截至2003年美国已施行该手术超过5万例次，     

血管塞治疗腹主动脉瘤主动脉腔内修复术后高流量Ⅰ型内漏4例

目的 探讨血管塞治疗腹主动脉瘤主动脉腔内修复术后高流量Ⅰ型内漏的可行性和安全性.方法 回顾性分析2019年5月至9月收治的腹主动脉瘤主动脉腔内修复术患者临床资料,其中3例腹主动脉瘤术后即刻造影发现Ⅰa型内漏,1例腹主动脉瘤术后3个月复查CT发现Ⅰb型内漏.4例腹主动脉瘤主动脉腔内修复术后高流量Ⅰ型内漏患者均接受血管塞栓...     

采用NBCA经导管动脉栓塞治疗腹主动脉瘤修复术后的Ⅱ型血管内漏

目的：评价α-氰基丙烯酸正丁酯（n-butyl cyanoacrylate，NBCA）经导管动脉栓塞（TAE）治疗腹主动脉瘤血管内修复术后Ⅱ型血管内漏的疗效。方法：对2002～2006年采用NBCA经导管动脉栓塞治疗腹主动脉瘤血管内修复术后Ⅱ型血管内漏的患，进行回顾性分析。到达流入血管栓塞内漏即为技术成功。临床成功则是实现技术成功的同时，要完全栓塞内漏（complete endoleak embolization，CE）而不是部分栓塞内漏（partial endoleakt hrombosis，PE），并且无需球囊扩张达12个月。远期形态学分析应评价流入血管（吻合状／网状）和流出血管（复杂型／简单型）。采用Fisher精确概率法比较成功情况、内漏特点及球囊状况。结果：30例患采用NBCA行TAE。     

腹主动脉瘤血管内修复术前后血流动力学变化的MSCT分析

目的 :模拟、评价和分析肾动脉以下腹主动脉瘤行血管内修复术前后血流压力的变化。方法 :自 1996年 3月～ 2 0 0 1年 5月 ,13例腹主动脉瘤患者行血管内介入治疗。所有病例均行多排螺旋CT检查 ,采用计算机辅助流体动力学分析软件 (CFD) ,对主动脉病变介入治疗前后血流动力学进行     

无创性血管弹性成像对犬腹主动脉瘤腔内修复术后的随访观察

正摘要目的评估无创性血管弹性成像在评价犬腹主动脉瘤腔内支架修复术后内漏及血栓形成的能力,并以CT及病理做参照。材料与方法所有模型均经动物管理协会及加拿大动物管理委员会同意。18例狗腹主动脉瘤模型均置入支架。伴Ⅰ型内漏的动脉瘤有4例,Ⅱ型内漏13例,无内漏者1例。在手术当天及术后1周、1个月、3个月、6个月均用     

腹主动脉瘤腔内隔绝术后内漏的治疗

为探讨腹主动脉瘤（AAA）腔内隔绝术（EVGE）后内漏产生的原因和治疗方法,作者总结分析了38例腔内隔绝术并发内漏的诊治体会。38例腔内隔绝术中共4例并发内漏,其中I型内漏2例,Ⅱ型内漏1例,Ⅲ型内漏1例;1例中转传统手术,其余3例在观察中。DSA是术中发现内漏的有效手段,球囊扩张法、支架法、移植物法和栓堵法是治疗内漏的有效方法。     

腹主动脉瘤腔内隔绝术后内漏的治疗①

为探讨腹主动脉瘤(AAA)腔内隔绝术(EVGE)后内漏产生的原因和治疗方法,作者总结分析了38例腔内隔绝术并发内漏的诊治体会.38例腔内隔绝术中共4例并发内漏,其中Ⅰ型内漏2例,Ⅱ型内漏1例,Ⅲ型内漏1例;1例中转传统手术,其余3例在观察中.DSA是术中发现内漏的有效手段,球囊扩张法、支架法、移植物法和栓堵法是治疗内漏的有效方法.     

腹主动脉瘤血管腔内修补术的临床应用价值

腹主动脉瘤血管腔内修补术是一种微创手术，对于老年或高危病人有明显优越性，但在中、长期随访时也发现很多缺陷和问题。对血管腔内修补术治疗腹主动脉瘤的优、缺点及发展前景进行综述。     

主动脉瘤腔内修复术一期治愈Stanford A型主动脉夹层并腹主动脉瘤一例

Stanford A型主动脉夹层是一种灾难性疾病,病死率极高[1]。治疗主要以手术为主,即升主动脉或主动脉弓置换术,但手术创伤大,手术病死率达14%～21.6%[2]。自1991年     

Low-dose multidetector-row CT-angiography of abdominal aortic aneurysm after endovascular repair

Purpose

To investigate the possibility of reducing radiation dose exposure while maintaining image quality using multidetector computed tomography angiography (MDCTA) with high-concentration contrast media in patients undergoing follow-up after endovascular aortic repair (EVAR) to treat abdominal aortic aneurysm.

Materials and methods

In this prospective, single center, intra-individual study, patients underwent two consecutive MDCTA scans 6 months apart, one with a standard acquisition protocol (130 mAs/120 kV) and 120 mL of iomeprol 300, and one using a low dose protocol (100 mAs/80 kV) and 90 mL of iomeprol 400. Images acquired during the arterial phase of contrast enhancement were evaluated both qualitatively and quantitatively for image noise and intraluminal contrast enhancement.

Results

Thirty adult patients were prospectively enrolled. Statistically significantly higher attenuation values were measured in the low-dose acquisition protocol compared to the standard protocol, from the suprarenal abdominal aorta to the common femoral artery (p < 0.0001; all vascular segments). Qualitatively, image quality was judged significantly (p = 0.0002) better with the standard protocol than with the low-dose protocol. However, no significant differences were found between the two protocols in terms of contrast-to-noise ratio (CNR) (13.63 ± 6.97 vs. 11.48 ± 8.13; p = 0.1058). An overall dose reduction of up to 74% was observed for the low-dose protocol compared with the standard protocol.

Conclusion

In repeat follow-up examinations of patients undergoing EVAR for abdominal aortic aneurysm, a low-dose radiation exposure acquisition protocol provides substantially reduced radiation exposure while maintaining a constant CNR and good image quality.     

Complications following endovascular abdominal aortic aneurysm repair

There is a growing population of patients who have undergone endovascular abdominal aortic aneurysm repair (EVAR) and thus there is an increasing likelihood that radiologists who are unfamiliar with this technique and its complications will have to report radiological investigations on one of these patients. The purpose of this review is to describe and illustrate the normal and abnormal radiological appearances after EVAR on plain radiography, ultrasound and CT.     

腹主动脉瘤腔内修复术22例围手术期处理回顾性总结

目的 总结腹主动脉瘤腔内修复术(EVAR)围手术期处理的临床经验.方法 回顾分析22例腹主动脉瘤患者EVAR临床经过,通过术前对主要脏器功能进行评估和保护,CTA测量近远侧瘤颈长度、直径、角度和构型,瘤体与分支动脉的关系,最低肾动脉开口至腹主动脉分叉的距离,导入途径的直径、扭曲和钙化程度.根据CTA测量结果,选择覆膜支架和手术方式.术时采用局麻20例,中转全麻l例,1例通过髂总动脉重建导人途径采用硬膜外麻醉,1例合并Stanf.0rd A型主动脉夹层,术时采用全麻.在支架释放前准确定位最低肾动脉位置,至少保留一侧通畅的髂内动脉,若双侧需要覆盖,分期覆盖或髂内动脉重建.支架植入后复查造影,有无内漏.正确判断内漏类型并进行相应处理.支架近端Ⅰ内漏2例,球囊扩张1例,植入Cuff 1例;支架远端Ⅰ内漏1例,球囊扩张时,动脉破裂,行人工血管补片修补术;Ⅲ型内漏3例,球囊扩张后支架植入1例.1例合并Starford A型主动脉夹层先行胸主动脉腔内修复术,后行EVAR.术后7一10 d复查CTA,以后每年复查1次.结果 EVAR手术全获成功.主要并发症为单侧髂肢扭结继发血栓形成,Fogarty导管取栓并支架植人1例;腹壁切口裂开1例,清创缝合;无手术死亡,随访6个月～5年,患者均存活.结论 CTA图像质量高、测量准确,是EVAR术前评估和术后随访的金标准.EVAR是高危、高龄腹主动脉瘤患者有效的治疗方法.     

Endovascular treatment of endoleaks after endovascular abdominal aortic aneurysm repair: personal experience

PURPOSE: This paper describes the different endovascular treatments (cuffs, endografts and embolisation) available for types I, II and III endoleaks occurring after endovascular abdominal aortic aneurysm repair (EVAR). MATERIALS AND METHODS: From January 2000 to June 2006, 134 patients (118 men, 16 women; mean age 75.1 years) underwent EVAR. Ten patients (7%) developed significant endoleaks requiring endovascular treatment. RESULTS: Five endoleaks were type I, two were type II and three were type III. Of the five type I endoleaks, four were proximal and one was distal. The proximal endoleaks were treated by cuff deployment, whereas the distal endoleak was treated with a bifurcated graft. Of the two patients with type II endoleak, one was treated by translumbar puncture and coil embolisation, and the other was treated by superselective embolisation of the lumbar feeding vessel with nonresorbable particles. Of the three patients with type III endoleak, two were treated by deploying an aortouniiliac endograft inside the bifurcated graft and the other by implanting a cuff to restore continuity between the graft body and the contralateral limb. Endovascular treatment was successful in 6/10 cases, whereas three cases required surgical conversion. One patient did not undergo surgery owing to poor general condition. CONCLUSIONS: The reported incidence of endoleaks after EVAR is 10%-20%. Significant endoleaks should be treated promptly. Endovascular treatment can be done with different techniques, but success in not constant due to adverse anatomical conditions and technical difficulties.