摘要
各类高能量冲击性外伤如车祸、高空坠落等对主动脉造成的损伤往往较为隐匿而难以发现,且使病情更为复杂。在手术治疗严重的外伤前,对损伤的主动脉进行修复是十分必要的。目前胸主动脉腔内修复术(TEVAR)因其创伤小、恢复快的优势得以广泛开展,为避免耽误多发伤的专科治疗提供较大帮助。本研究通过分析创伤性主动脉损伤(TAI)的病变特点,并比较TAI与Stanford B型主动脉夹层行TEVAR的疗效,探讨其治疗策略。
回顾性分析中南大学湘雅医院2015年11月—2020年12月内行TEVAR治疗的20例TAI患者(TAI组),以及同期行TEVAR治疗的50例非创伤性Stanford B型主动脉夹层患者(非TAI组)资料,比较两组患者的临床资料和随访情况。
两组在性别、年龄等方面差异无统计学意义(均P>0.05),TAI组高血压患者比例低于非TAI组(40.0% vs. 74.0%,P<0.05)。TAI组的局限型撕裂、第一破口多位于主动脉峡部的比例高于非TAI组(80.0% vs. 34.0%;70.0% vs. 24.0%,均P<0.05),而破口数量≥2、弓上受累及破口与左锁骨下动脉(LSA)的距离<15 mm的比例低于非TAI组(30.0% vs. 78.0%;10.0% vs. 52.0%;40.0% vs. 72.0%,均P<0.05),TAI组支架放大率大于非TAI组(P<0.05)。TAI组住院时间明显长于非TAI组(16.80 d vs. 11.20 d,P<0.05),且其术后并发症发生率高于非TAI组(20.0% vs. 4.0%,P<0.05)。随访结果显示,两组在并发症发生率、存活时间等方面差异无统计学意义(均P>0.05),但TAI组假腔体积变化率及血栓吸收率均高于非TAI组(95.0% vs. 72.0%;90.0% vs. 58.0%,均P<0.05)。
车祸及高处坠落等外伤事件层出不穷,随着医疗技术的进步,在治疗此类事故引起的骨折及内脏损伤时发现部分患者的大动脉也有受损,如主动脉壁间血肿、假性动脉瘤、主动脉夹层
本文通过对行TEVAR治疗的TAI患者资料进行回顾性分析,并与同时期行TEVAR治疗的非创伤性Stanford B型主动脉夹层(Stanford type B aortic dissection,TBAD)患者的血管变化以及随访情况进行对比,探讨TAI的病情变化规律及腔内治疗效果,并浅谈相关治疗经验。
回顾性分析2015年11月—2020年12月在中南大学湘雅医院行TEVAR治疗的20例TAI患者临床资料(TAI组),其中男15例,女5例;年龄18~72岁,平均(54.10±14.17)岁。所有患者均合并不同类型、不同程度的多种创伤(
所有患者均在数字减影血管造影室行TEVAR术,患者取仰卧位,予以全身麻醉,气管插管。取右侧腹股沟股动脉搏动处采用Seldinger法穿刺。全身肝素化后,插入导管至腹主动脉造影,确认为真腔,导管至升主动脉造影显示内膜破口位置、夹层撕裂范围、锚定区位置,部分患者视需要保留或封闭左锁骨下动脉(left subclavian artery,LSA
对所有患者在出院后采用门诊复查和电话询问的方式进行随访。时间为出院后第3、6、12个月各随访1次,以后每年随访1次。内容包括患者的症状、体格检查、主动脉全长CTA。观察指标:支架移位及内漏、支架段假腔血栓完全吸收情况。将CT扫描图像导入血管重建软件Mimics Medical1 9.0建立3D模
TAI组:8例患者合并高血压病,术前皆控制良好。CTA示:第一破口或假性动脉瘤位置,14例位于主动脉峡部,2例位于胸主动脉段,1例壁间血肿未见明显破口;第一破口与LSA的距离,有8例<15 mm。手术距发病时间的中位数为5 d。非TAI组:37例患者合并高血压病,术前皆控制良好。CTA示:第一破口位置,38例位于胸主动脉段,12例位于主动脉峡部;第一破口与LSA距离,36例<15 mm;39例发现多个破口。26例患者主动脉弓部分分支受累。手术距离发病时间的中位数为6 d。
TAI组与非TAI组在性别、年龄及手术时机等方面差异无统计学意义(均P>0.05)。高血压患者TAI组占40%,非TAI组占74%,差异有统计学意义(P<0.05)。撕裂范围,TAI组局限型占80%,而非TAI组仅占34%,差异有统计学意义(P<0.05)。TAI组与非TAI组在第一破口位置、破口与LSA的距离、破口数量、弓上分支受累及支架放大率等方面,差异均有统计学意义(均P<0.05)。TAI组主动脉弓部分分支受累情况少于非TAI组(P<0.05)(
TAI组13例保留LSA,7例完全封闭LSA。住院期间出现肺部感染3例,经治疗后均好转。1例患者因多器官功能衰竭死亡,其余19例患者未发生主动脉手术相关并发症如截瘫、肾功能不全、再次主动脉手术等。非TAI组28例行保留LSA,22例完全封闭LSA。住院期间1例患者因多器官功能衰竭死亡,1例患者因夹层破裂死亡,其余48例患者住院期间未发生主动脉手术相关并发症。TAI组住院时间明显长于非TAI组[(16.80±8.52)d vs.(11.20±4.29)d,P<0.05],而其术后不良事件发生率也高于非TAI组(20% vs. 4%,P<0.05)。
TAI组截止最后一次随访,患者术后存活时间中位数为56个月。18例存活,2例死亡(1例患者住院期间因多器官功能衰竭死亡,另1例术后2年死亡,死亡原因不详)。随访期间,2例患者出现锁骨下动脉窃血综合征,症状轻微,未行手术治疗,预后情况良好,其余患者无肢体缺血、短暂性脑缺血发作、脊髓缺血或卒中等症状。存活患者术后1年主动脉全长CTA显示无支架移位及内漏;2例假腔内血栓未完全吸收。假腔体积变化率为(95±7)%(

图1 车祸TAI患者影像学资料 A-C:术前CTA图像示假性动脉瘤;D-F:术后1年复查CTA图像
Figure 1 Imaging data of TAI patients in car accidents A-C: Preoperative CTA images showing the false aneurysms; D-F: Review CTA images 1 year after surgery
与TAI相比,非TAI患者可能还存在高龄及合并基础疾病等情况,血管中层结构改变,脆性增
TAI病情复杂,常合并严重外伤情况,对于TEVAR手术时机的把握众说纷
TAI与TBAD行TEVAR治疗的基本原则相似,但指
本研究数据还显示,TAI组住院时间明显长于非TAI组,TAI组术后不良事件发生率也明显高于非TAI组,且以肺部感染为主,笔者认为,由于TAI患者病情复杂,卧床时间较长,且大多合并骨折及胸腔积液,肺功能恢复较慢,同时感染途径多,故而感染及其他并发症的发生率更高,因而相对于非创伤性TBAD更要注重术后管理,如积极锻炼肺功能,尽早康复训练等。刘轩泽
TAI相对于非创伤性TBAD更罕见,但近些年以来,随着多个单中心文献报道提高了对疾病的认
利益冲突
所有作者均声明不存在利益冲突。
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