Castor支架在主动脉弓病变中重建左颈总动脉的可行性和有效性研究

背景与目的 胸主动脉腔内修复术（TEVAR）已成为治疗主动脉弓病变的首选方法。如何重建主动脉弓上分支,是TEVAR的难点和研究方向之一。目前,Castor单分支主动脉覆膜支架广泛应用于TEVAR术中重建左锁骨下动脉,但其应用于重建左颈总动脉（LCCA）报道少见。因此,本研究探讨TEVAR术中运用Castor单分支主动脉覆膜支架在TEVAR术中重建LCCA的可行性和有效性。方法 回顾2021年10月—2022年9月潍坊市人民医院血管外科收治的5例累及Z2区的主动脉弓病变患者资料,患者均为男性;年龄39~77岁,平均（59.2±14.08）岁,其中急性Stanford B型主动脉夹层3例,主动脉弓动脉瘤2例。所有患者均在数字减影血管造影引导下采用Castor一体化分支型主动脉覆膜支架在TEVAR术中重建LCCA。分析手术相关指标及术后不良事件发生率,以及术后随访6个月内不良事件的发生情况与主动脉重塑情况。结果 5例患者均手术成功。手术时间168~233 min,平均（191±19.06）min,无中转开胸手术。5例患者的LCCA均成功采用Castor单分支支架行血运重建。术后住院期间发生1例脑卒中,术后2个月意识清晰,右上肢肌力完全恢复（Ⅴ级）;其余4例患者住院及随访期间无全因死亡、脑卒中、支架移位、夹层复发、内漏、截瘫、左上肢缺血等并发症。患者术后6个月复查主动脉CT血管造影显示Castor单分支支架位置良好,主动脉峡部平面主动脉平均直径与肺动脉分叉平面主动脉平均直径均较术前明显减小（35.8 mm vs. 41.9 mm,P=0.035;31.1 mm vs. 36.7 mm,P=0.048）;主动脉及分支支架通畅率为100%,无内漏,瘤腔/假腔均出现血栓化。结论 在严格把握适应证的前提下,Castor单分支支架在TEVAR术中重建LCCA安全可行,然而,其疗效仍需更长时间的随访和更多的病例验证。     

Ankura主动脉覆膜支架行原位开窗重建弓上分支的应用

背景与目的 胸主动脉腔内修复术（TEVAR）已经成为治疗主动脉弓部病变的首选术式。然而,此术式要求支架近端安全锚定区至少为15 mm,对于锚定区不足者,则通常需重建弓部分支血管以确保手术安全。在目前各种重建技术中,原位开窗技术因其较大程度的保留分支血管以及较低的内漏风险而应用最多。因此,本研究探讨Ankura主动脉覆膜支架进行原位开窗重建弓上分支的可行性及效果。方法 回顾性分析2017年3月—2020年12月中国科学院大学宁波华美医院收治的47例近端锚定区不足的主动脉病变患者的临床资料。其中胸主动脉夹层38例,胸主动脉瘤6例,胸主动脉溃疡3例。根据术前CTA影像资料决定患者的开窗数目、开窗支架规格,术中利用穿刺针对Ankura主动脉覆膜支架进行原位开窗重建弓部分支,术后定期行主动脉CTA复查随访。结果 所有患者均获手术成功,共植入Ankura胸主动脉覆膜支架47枚,Gore Viabahn覆膜支架51枚,Cordis Smart裸支架20枚。4例术中转烟囱支架植入,原位开窗成功率91.5%（43/47）,包括左锁骨下动脉（LSA）开窗29例,左颈总动脉（LCCA）开窗+LSA栓塞1例,LSA开窗+左椎动脉烟囱1例,LSA开窗+左LCCA烟囱9例,LCCA+LSA开窗+无名动脉（IA）烟囱1例,LCCA开窗+IA烟囱+LSA栓塞2例。全组患者手术时间160~300 min,平均（200±20）min,术中开窗时间18~45 min,平均（30±8）min;术后内漏（1型）3例,逆撕2例（1例行升主动脉置换后好转,1例死亡）,脑梗死2例,截瘫0例。平均随访时间（28.4±14.7）个月,期间2例内漏在随访中消失,1例内漏未进一步增大予以观察随访中,未见开窗分支血管闭塞。结论 利用穿刺破膜技术对Ankura主动脉覆膜支架进行原位开窗重建分支血管是一种切实可行且有效的治疗方式,近期效果良好。     

单分支支架治疗锚定区不足Stanford B型主动脉夹层

目的探讨应用Castor分支型主动脉覆膜支架治疗健康锚定区不足15 mm的Stanford B型主动脉夹层(TBAD)的临床效果。方法回顾性分析解放军第九七〇医院2017年10月至2018年6月应用Castor单分支型支架治疗18例近端健康锚定区15 mm的TBAD患者的临床资料,其中急性TBAD 17例,慢性TBAD 1例,患者均经CT血管成像(CTA)确诊。结果手术成功率100%,手术平均时间(127.8±20.1)min,均无内漏发生,围术期无脑梗死、夹层动脉瘤破裂等并发症,无死亡病例。术中2例左锁骨下动脉(LSA)分支支架释放后存在狭窄,给予球囊扩张后狭窄解除;1例术后出现左侧肱动脉穿刺点血肿,经保守治疗治愈。随访18例,平均随访时间(8±2)个月,无截瘫及死亡病例,LSA分支支架通畅率为100%,无内漏及夹层逆撕,胸主动脉段真腔直径较术前明显扩大、假腔直径较术前明显缩小(P0.05),胸段假腔术后血栓化率高于腹主动脉。结论 Castor分支型覆膜支架治疗近端健康锚定区不足15 mm的TBAD可以有效重建LSA,操作安全精准,隔绝效果好,短期随访无内漏发生,远期疗效尚需进一步观察。     

胸主动脉腔内修复术采用裙边型烟囱支架（Longuette™）的PATENCY临床试验研究结果

背景与目的 烟囱技术是胸主动脉腔内修复术（TEVAR）中重建左锁骨下动脉（LSA）的方法,Ⅰa型内漏是其主要并发症。裙边型烟囱支架（Longuette?）专为烟囱技术设计,用于重建LSA时降低Ⅰa型内漏。为评估Longuette?烟囱支架联合TEVAR治疗累及LSA的Stanford B型主动脉夹层（TBAD）的疗效,笔者开展了前瞻性、多中心临床试验（PATENCY临床试验）。本研究总结PATENCY临床试验的1年结果和经验。方法 2018年10月—2022年3月,全国26家血管外科中心参与PATENCY临床试验,共纳入150例符合标准的TBAD患者。所有患者均在TEVAR术中采用Longuette?烟囱支架重建LSA。评估患者围手术期和术后12个月的临床效果和不良事件,并分析患者术后1年累积生存率、LSA通畅率和无内漏率。结果 患者年龄30~77岁,平均（54.48±11.12）岁,138例（92.0%）患者合并高血压病;急性、亚急性和慢性TBAD分别占74.7%,17.3%和8.0%。124例（82.7%）患者采用全身麻醉。手术成功率为99.33%（149/150）,手术时间（91.67±41.47）min,X线暴露时间（31.36±16.71）min,手术出血量为（71.55±60.40）mL。围手术期内漏发生率为5.33%（8/150）,包括Ⅰ型6例、Ⅱ型1例、Ⅳ型1例;1例（0.67%）患者发生Longuette?烟囱支架急性闭塞,再次实施腔内手术后恢复通畅;1例（0.67%）患者术后发生急性脑梗死;2例（1.33%）患者术后发生逆撕的Stanford A型主动脉夹层,其中1例术后3周死亡。术后30 d死亡2例（1.33%）。142例患者进行了密切随访,随访时间为11.67（5~16）个月。无主动脉支架和Longuette?烟囱支架移位。2例Ⅰ型内漏患者分别于术后6个月和1年进行了再次介入栓塞手术治疗,术后1年随访仍有6例患者有轻微的内漏持续存在,患者TBAD假腔保持稳定,无明显症状,均予以保守治疗。Longuette?烟囱支架内狭窄和闭塞分别发生1例和2例,逆撕的Stanford A型主动脉夹层患者1例,假腔增大,患者均无明显症状,予以保守治疗。无发生脑卒中、截瘫、左上肢缺血等并发症。术后12个月累积生存率、LSA通畅率、无内漏率分别为97.96%、97.96%和91.91%。结论 采用Longuette?烟囱支架在TBAD腔内治疗中重建LSA简便、安全、有效,其能够有效降低围手术期Ⅰa型内漏的发生率,为微创治疗主动脉弓部病变提供新的治疗方式。     

主动脉定制开窗支架治疗主动脉弓动脉瘤中国首例报告（附视频）

背景与目的：胸主动脉腔内修复术（TEVAR）治疗胸主动脉病变已逐渐成为一线手术方案。然而，受限于主动脉弓部复杂解剖结构，在治疗病变的同时如何有效重建弓部分支动脉是应用当前标准化产品常有的困境。鉴于此，笔者团队与支架厂家合作开发了Castor胸主动脉定制开窗覆膜支架（以下简称Castor定制开窗支架），并实施了国内首例Castor定制开窗支架的置入。本文对此作一汇报。方法：报告国内首例Castor定制开窗支架置入病例的临床资料、支架定制情况与手术过程，并进行Castor定制开窗支架的优缺点分析与相关文献复习。结果：患者为59岁男性，于TEVAR术后14年发生主动脉弓部动脉瘤，病变累及左侧锁骨下动脉（LSA）、左颈总动脉（LCCA）。经患者及家属同意后采用Castor定制开窗支架隔绝动脉瘤，手术规划拟采用Castor定制开窗支架隔绝动脉瘤，将Castor支架分支置入LCCA；术前定制开窗分别重建无名动脉（IA）和LSA。术中成功置入Castor单分支支架并顺利重建弓部三根分支动脉，术后复查结果提示动脉瘤隔绝满意无内漏，弓部三根分支动脉通畅，同时无主动脉相关不良事件的发生。结论：Castor...     

三分支覆膜支架行主动脉弓重建治疗Stanford A型主动脉夹层效果的临床随访

目的通过长期随访采用三分支覆膜支架重建主动脉弓治疗 Stanford A 型主动脉夹层患者的临床治疗效果,评价三分支覆膜支架行主动脉弓重建的安全性和可行性。方法纳入 2009 年 3 月至 2014 年 6 月我院心脏大血管外科应用三分支覆膜支架治疗的 Stanford A 型主动脉夹层患者 17 例,其中男 11 例、女 6 例,年龄 35~72 岁。观察其临床疗效及并发症发生率以及术后 CT 随访结果。结果三分支主动脉弓覆膜支架治疗组患者随访期间死亡 1 例。术后不同随访时间 64 排 CT 血管造影结果显示支架血管位置满意,支架打开完全,无扭曲及内漏发生。主动脉各分支血管血流通畅,无狭窄及闭塞。3 个月后随访观察到有 8 例假腔血栓形成闭塞,6 个月后随访观察到所有患者假腔全部血栓闭塞。3 年后随访观察到支架稳定,未发生支架扭曲、变形或者断裂情况,假腔消失。结论三分支覆膜支架重建主动脉弓治疗 A 型主动脉夹层临床效果可靠,值得推广应用。     

单分支支架治疗Stanford B型主动脉夹层安全性和有效性的Meta分析

目的比较单分支支架(single-branched stent graft,SBSG)与其他胸主动脉腔内修复术(thoracic endovascular aortic repair,TEVAR)治疗Stanford B型主动脉夹层(type B aortic dissection,TBAD)患者的安全性和有效性。方法系统性检索PubMed、Embase、Cochrane Library、Web of Science、万方数据、中国知网从建库至2022年9月发表的比较SBSG和其他TEVAR相关技术治疗TBAD患者的中英文文献,对技术成功率、手术时间、早期Ⅰ型内漏、围术期神经系统并发症、术后30 d死亡和随访期分支血管阻塞等数据进行Meta分析。结果共纳入9篇文献986例患者,其中SBSG组338例,对照组637例。Meta分析结果显示,SBSG组有更低的早期Ⅰ型内漏(OR=0.47,95%CI=0.22~0.99,P=0.046)和随访期分支血管阻塞发生率(OR=0.46,95%CI=0.21~0.97,P=0.041)。两组技术成功率、手术时间、围术期神经系统并发症和术后30 d死亡发生率的差异无统计学意义。结论SBSG在治疗TBAD的应用中是安全有效的,能有效降低早期Ⅰ型内漏和随访期分支血管阻塞的发生率。     

Castor单分支支架腔内治疗Stanford B型主动脉夹层单中心回顾性研究

背景与目的 随着腔内治疗的发展,累及左锁骨下动脉（LSA）的Stanford B型主动脉夹层的治疗方案逐渐成熟,但由于该部位解剖结构复杂、器具自身局限,仍旧存在内漏、锚定区损伤、逆撕等并发症。本研究通过单中心回顾性研究探讨Castor单分支支架治疗Stanford B型主动脉夹层的效果。方法 纳入中国人民解放军海军军医大学附属第一医院血管外科自2018年12月─2021年10月期间使用Castor单分支支架进行腔内手术的Stanford B型主动脉夹层患者。收集入组患者的术前Dicom格式全主动脉计算机体层成像血管造影（CTA）影像、术中详细信息及随访预后结果,使用EndoSize软件测量夹层近远端锚定区动脉直径、病变长度、LSA开口与夹层关系等指标,并结合术中使用移植物情况计算支架放大率,观察并记录手术成功率、近远期并发症率等指标。结果 共纳入107例Stanford B型主动脉夹层患者,全部采用腔内手术方式,手术均取得技术成功。夹层近端主要裂口与LSA距离（42.7±17.3）mm;夹层近端边缘与LSA距离（7.7±13.2）mm;主动脉近端锚定区直径（31.5±3.0）mm;左颈总动脉开口远端与LSA开口近端距离（8.5±2.6）mm。Castor主体支架近端直径（32.5±3.3）mm,远端直径（26.6±3.3）mm,分支支架直径（10.7±3.5）mm。主体支架近端放大率为（3.2±3.5）%,远端放大率为（0.1±9.5）%。围手术期与随访期间,共9例患者死亡,其中1例术前严重低血压,术后1 d死于低灌注引起的多脏器功能衰竭;1例患者于术后4 d死于夹层逆撕破裂;1例患者于术后1个月死于呼吸衰竭;1例患者于术后4个月死于肺部感染;2例患者于术后6个月死于心衰;2例患者分别于术后9个月及14个月死于脑出血;1例患者于术后11个月死于不明原因疾病。6例患者出现主动脉夹层相关不良事件,其中围手术期出现1例夹层逆撕,3例脑梗,随访期间出现1例Ib型内漏,1例分支支架闭塞。结论 Stanford B型主动脉夹层病变往往累及LSA,腔内手术需要将支架锚定在健康的锚定区同时保留LSA,以防止脑梗及截瘫等并发症。Castor单分支支架能够很好地适用于累及LSA的Stanford B型主动脉夹层的腔内治疗,在急性期的治疗上具有一定优势。     

Stanford B型主动脉夹层合并迷走右锁骨下动脉的腔内治疗：附16例报告

背景与目的：迷走右锁骨下动脉（ARSA）为主动脉弓部的一种先天畸形,Stanford B型主动脉夹层（TBAD）合并ARSA是一种罕见且严重威胁患者生命的疾病。既往临床上对其处理通常采用开放手术或杂交手术。随着血管腔内技术的飞速发展,胸主动脉腔内修复术（TEVAR）已逐渐被应用与TBAD合并ARSA的治疗,并展现出其创伤小,恢复快的优势。但由于ARSA与夹层破口相对位置的不确定性,如何处理夹层破口与ARSA成为了影响其腔内治疗的主要因素,完全腔内治疗这一复杂主动脉弓部病变的安全性和有效性尚不明确。本文旨在探讨TBAD合并ARSA的腔内修复治疗方法,总结初步经验。  方法：回顾性分析2012年1月—2019年12月中南大学湘雅二医院血管外科采用TEVAR治疗的16例TBAD合并ARSA患者资料。其中男14例,女2例;平均年龄为（56.1±11.3）岁;13例患者破口位于Z3区,3例位于Z4区;左椎动脉优势14例,右椎动脉优势1例,双侧椎动脉均势1例。根据主动脉夹层破口位置与双侧锁骨下动脉开口位置、椎动脉形态制定手术方案。 结果：技术成功率100%,平均手术时间（95.2±38.9）min,无围手术期死亡。2例患者保留双侧锁骨下动脉,5例患者封堵ARSA,7例患者采用烟囱技术重建左锁骨下动脉（LSA）,1例患者采用烟囱技术重建LSA并采用潜望镜技术重建ARSA,1例患者采用开窗技术重建LSA。弓部分支动脉重建的患者,术后服用拜阿司匹林（100 mg/d）和氯吡格雷（75 mg/d）3个月。平均随访时间33.2（3~66）个月。无内漏、支架移位等;右上肢缺血2例,保守治疗后逐渐恢复;比较术前和末次随访的主动脉CTA,降主动脉最大直径从（37.1±9.6）mm降至（33.9±8.9）mm,假腔与真腔之比从1.03±0.62降至0.21±0.31。长期随访,所有烟囱支架均保持通畅,未出现弓部分支动脉缺血、锁骨下动脉窃血、脊髓缺血等症状。 结论：TEVAR辅以“烟囱”、开窗等技术治疗合并ARSA的TBAD安全可行,可以在保留LSA和（或）ARSA血流的同时良好封堵主动脉夹层破口,且创伤小、住院时间短、围手术期并发症发生率低。具体的手术方式应由夹层破口与双侧锁骨下动脉的相对位置来决定,应至少保证椎动脉优势一侧锁骨下动脉的血流供应。      

主动脉分支支架的血流动力学分析

目的 探讨主动脉分支支架内血流动力学的变化情况.方法 基于2020年12月中国科学技术大学第一附属医院收治的1例Stanford B型主动脉夹层患者的增强计算机断层扫描血管造影(CTA)影像数据进行图像分割和三维模型重建,构建不同深度的胸主动脉分支支架模型,采用数值模拟的方法模拟分支支架植入后,分析分支支架内血流动力学...     

Initial results of thoracic endovascular repair for uncomplicated type B aortic dissection involving the arch vessels using a semicustom-made thoracic fenestrated stent graft

ObjectiveThoracic endovascular aortic repair (TEVAR) for selected type B aortic dissection (TBAD) is a standard treatment; however, TBAD involving the aortic arch is difficult to treat because of the need for arch vessel reconstruction. We report our initial results of TEVAR for uncomplicated TBAD involving the arch vessels using a semicustom-made fenestrated stent graft.MethodsThis is a retrospective study of 24 patients treated by fenestrated (F group) or debranching (D group) TEVAR from August 2011 to July 2017. The patients in the F group received the Najuta semicustom-made fenestrated stent graft (Kawasumi Laboratories, Tokyo, Japan). The fenestrated graft ensures sufficient sealing at the proximal healthy aorta without the need for arch vessel reconstruction. The primary end point was aorta-related mortality; the secondary end points were technical success and major adverse events (stroke, type IA endoleak, retrograde type A aortic dissection, and secondary intervention).ResultsDuring the study period, we treated 65 TBAD cases by TEVAR, including 17 complicated cases. Of the 48 uncomplicated cases, 24 underwent TEVAR with arch vessel involvement (13 in the F group and 11 in the D group). The technical success rates in the F and D groups were 92.3% and 100.0%, respectively (P > .99, NS). The mean operation time was significantly shorter in the F group (158 minutes) than in the D group (202 minutes; P = .0426), and the mean postoperative hospital stay was also significantly shorter in the F group (7 days) than in the D group (22 days; P = .0168). The primary patency rate of the reconstructed branch vessel was 100%, and there were no aorta-related deaths or retrograde type A aortic dissection in either group. One patient had a type IA endoleak in the F group. In the D group, one patient had a postoperative stroke and two patients required secondary interventions for stent graft-induced new entry at the descending aorta. The median follow-up period was 14.1 months (range, 1-37 months). The rate of freedom from aorta-related death was 100% in both groups (P > .99, NS); the rate of freedom from major adverse events at 24 months was 92.3% in the F group and 72.7% in the D group (P = .749, NS).ConclusionsThe initial results of TEVAR with aortic arch vessel reconstruction for uncomplicated TBAD were acceptable. The fenestrated graft may be a less invasive option for the treatment of TBAD involving the aortic arch.     

Early Outcomes of Left Subclavian Artery Revascularization Using Castor Single-Branched Stent-Graft in the Treatment of Type B Aortic Dissection or Intramural Hematoma

Background: More evidence was required to guide the management of left subclavian artery (LSA) during thoracic endovascular aortic repair (TEVAR). The present study aimed to compare the outcomes of LSA coverage with LSA revascularization. Another purpose of this study was to share our experience of LSA revascularization with castor single-branched stent-graft.Methods: From January 2016 to December 2019, 134 patients with type B aortic dissection (TBAD) or intramural hematoma (IMH) were enrolled and divided into two groups, the LSA-covered group (n = 61) and the LSA-revascularized group (with castor single-branched stent-graft, n = 73). The results, such as in-hospital and 30-day mortality, stroke, paraplegia, left arm ischemia, operation time, endoleak, were compared between the two groups.Results: The incidence of 30-day stroke in the LSA-covered group (8.2%) was significantly higher compared with the LSA-revascularized group (0%, P = 0.018). 30-day ischemia of left arm occurred in more patients in the LSA-covered group (11.5%, P = 0.003). No statistical difference was found in the incidences of paraplegia, endoleak, in-hospital mortality, and 30-day mortality.Conclusions: LSA should be revascularized during TEVAR to reduce the incidences of stroke and left arm ischemia. Castor single-branched stent-graft was feasible and safe for treating TBAD or IMH.     

Double-barrel technique for preservation of aortic arch branches during thoracic endovascular aortic repair

Thoracic endovascular aortic repair (TEVAR) may involve either planned or inadvertent coverage of aortic branch vessels when stent grafts are implanted into the aortic arch. Vital branch vessels may be preserved by surgical debranching techniques or by placement of additional stents to maintain vessel patency. We report our experience with a double-barrel stent technique used to maintain aortic arch branch vessel patency during TEVAR. Seven patients underwent TEVAR using the double-barrel technique, with placement of branch stents into the innominate (n = 3), left common carotid (n = 3), and left subclavian (n = 1) arteries alongside an aortic stent graft. Gore TAG endografts were used in all cases, and either self-expanding stents (n = 6) or balloon-expandable (n = 1) stents were utilized to maintain patency of the arch branch vessels. In three cases the double-barrel stent technique was used to restore patency of an inadvertently covered left common carotid artery. Four planned cases involved endograft deployment proximally into the ascending aorta with placement of an innominate artery stent (n = 3) and coverage of the left subclavian artery with placement of a subclavian artery stent (n = 1). TEVAR using a double-barrel stent was technically successful with maintenance of branch vessel patency and absence of type I endoleak in all seven cases. One case of zone 0 endograft placement with an innominate stent was complicated by a left hemispheric stroke that was attributed to a technical problem with the carotid-carotid bypass. On follow-up of 2-18 months, all double-barrel branch stents and aortic endografts remained patent without endoleak, migration, or loss of device integrity. The double-barrel stent technique maintains aortic branch patency and provides additional stent-graft fixation length during TEVAR to treat aneurysms involving the aortic arch. Moreover, the technique uses commercially available devices and permits complete aortic arch coverage (zone 0) without a sternotomy. Although initial outcomes are encouraging, long-term durability remains unknown.     

累及主动脉弓部病变的完全腔内治疗:95例中长期随访结果

目的探讨完全腔内技术治疗累及主动脉弓部病变的中长期随访结果。方法回顾性分析2010年1月~2017年12月95例应用完全腔内技术处理累及主动脉弓部病变的临床资料,其中烟囱支架技术81例,“开窗”技术8例(原位4例,体外4例),分支支架技术6例。结果共植入胸主动脉覆膜支架主体95枚,重建主动脉弓部分支动脉124支,其中无名动脉7支,左颈总动脉36支,左锁骨下动脉81支。2例原位开窗失败中转烟囱技术重建分支。术中Ⅰ型内漏11例(11.6%),其中5例弹簧圈栓塞后消失,6例轻微内漏随访观察。技术成功率91.6%(87/95)。围术期死亡3例(3.2%),一过性截瘫1例(1.1%),脑梗死2例(2.1%),急性心肌梗死2例(2.1%),急性肺损伤1例(1.1%)。存活92例中随访83例,随访率90.2%。1例术后4个月死于脑梗死,1例术后6个月因多器官功能衰竭死亡,其余81例随访时间28~106(58.9±17.9)月,其中73例>36个月。8例因Ⅰ型内漏行二次手术栓塞,未见支架移位、狭窄、闭塞等并发症。结论通过多种完全腔内技术重建各主动脉弓部的分支血管,为累及主动脉弓部病变提供微创治疗机会,中长期随访结果满意。     

�����ϲ�Ƭ�ĸ�ǻ��ȫ��Ĥ�����޲���34���ٴ�Ӧ�����

??Objective:To discuss the methods of Endovascular aneurysm repair (EVAR) for artic arch aneurysm or dissection. Methods:From Sep.1998 to Feb.2006,63 cases related with the super??arch branches.Three methods were used in the lesions with left subclavain artery (LSA) invasion only,covering the LSA without reconstruction,LSA bypass before EVAR or covering LSA completely and then re??open it by endovascular technique.To the lesions with LSA and left common carotid artery (LCCA) invasion,a traditional bypass of LCCA and LSA was done before EVAR,or covering most of LCCA first,and then reconstructed it through LCCA by endovascular technique.To the lesions with three super??arch branches invasion,a bifurcated stent??graft was planted for reconstructing the artic arch. Results:LSA was treated in 54 cases,LSA and LCCA were treated in 8 cases and all of the super??arch branch arteries were treated in 1 case.All of the auxiliary techniques were enforced successfully.The primary average systolic pressure of left brachial artery was ??62.6±24.2??mmHg in cases without LSA reconstruction.The 30??days endoleak rate was 17.5%. Conclusion:Covering the LSA is safe to the patients with normal contraliteral vertebral and basilar artery.EVAR combined with supplementary techniques can expand the EVAR indications of aortic arch lesions.The long term result still keep in follow up.     

����֧��������֧������Stanford B���������в�11������

??Endovascular repair of Stanford B dissection with branched stent-graft??An analysis of 11 cases YANG Jue??FU Wei-guo??XU Xin??et al. Department of Vascular surgery??Zhongshan Hospital??Fudan University??Shanghai 200032??China
Corresponding author??FU Wei-guo??E-mail??fu.weiguo@zs-hospital.sh.sn
Abstract Objective To summarize experience of thoracic endovascular aortic repair (TEVAR) in patients with proximal short landing zone with branched stent-graft. Methods A total of 11 patients with Stanford B dissection who underwent TEVAR with left subclavian artery ??LSA?? revascularization by single-branched stent-graft from July 2013 to February 2014 were retrospectively reviewed. Routine postoperative follow-up with computed tomography angiography (CTA) was performed to assess TEVAR and LSA patency??endoleak??dissection exclusion and complications in 1 and 6 months. Results TEVAR with single-branched stent-graft was successfully performed in 10 patients??and 1 patients failed by unsuccessful deployment of branched stent and replaced by another stent-graft with coverage of LSA. The mean operative time was??130.0±36.0??minutes. No major complications occurred. All patients were followed up in 1 and 6 months postoperatively. Type ?? endoleak was noted in 1 patient and 1 patient had an asymptomic LSA stent occlusion by CTA. Thrombosis formed in the aortic false lumen of the graft exclusion segment in all the patients??and the average diminution was 12mm. Conclusion Branched stent-graft is a feasible and effective option for LSA revascularization with proximal landing zone ??20 mm during TEVAR.     

Modular branched endograft system for aortic aneurysm repair: evaluation in a human cadaver circulation model

A circulation model was created in 6 nonaneurysmal human cadavers to evaluate the deliverability, deployment, and acute performance of a modular branched endograft system for treatment of aortic aneurysms containing essential branch vessels. Two fenestrations were created in an appropriately sized aortic main endograft. Under fluoroscopic guidance, the main endograft was advanced to the target site and the fenestrations were aligned with the ostia of the renal arteries. Branch grafts were placed through the fenestrations into the renal arteries. The outcome was evaluated by post implant angiography and autopsy. Eleven branch grafts were deployed at the target site. All targeted renal arteries showed good patency. At autopsy, all main endografts were adequately deployed, and 10 of 11 branch grafts were locked in place. In this model, deliverability and deployment of the modular branch graft system is feasible in a reliable, predictable, and timely fashion.     

“�̴�”���������ۼ�������֧����������Զ����Ч�о�

??Chimney technique for aortic diseases involving supra-aortic branches in a single center SHU Chang, WANG Tun. Department of Vascular Surgery, the Second Xiangya Hospital, Central South University, Changsha 410011, China
Corresponding author: SHU Chang, E-mail??changshu01@yahoo.com
Abstract Objective To evaluate the mid- and long-term efficiency of thoracic endovascular aortic repair (TEVAR) with chimney technique for aortic arch disease involving the supra-aortic branches. Methods The clinical data of 57 cases of aortic arch diseases performed TEVAR with chimney technique from September 2009 to December 2013 in Department of Vascular Surgery, the Second Xiangya Hospital, Central South University were analyzed retrospectively. There were 2 cases (3.5%) of aortic arch aneurysm, 1 case (1.8%) of type I endoleak after TEVAR for thoracic aortic aneurysm, 1 case (1.8%) of type I endoleak after TEVAR for type B aortic dissection (TBAD), 53 cases (92.9%) of TBAD. One case was complicated with Marfan syndrome. Results All of the stent grafts were deployed as planned. Five cases had type II endoleak during TEVAR. One case received re-TEVAR and another chimney stent grafts deployment because of ischemia of branch arteries caused by migration of chimney stent grafts during anesthesia resuscitation. All patients followed up for 2 to 51 months. One case of TBAD received re-TEVAR for distal re-entry. One case died of cerebral hemorrhage 3 months later. No TEVAR related complications happened, such as stent graft migration, occlusion, fracture or type I endoleak during follow-up. Conclusion Chimney technique can be used with TEVAR to treat aortic arch disease invaded supra-aortic branches, which is reliable and stable. Reconstructed supra-aortic branches with covered stent is useful for prevention of post-TEVAR complications