Objective: To examine the mid- and long-term outcomes of endovascular aneurysm repair (EVAR). Methods: This was a retrospective cohort study of 540 patients with abdominal aortic aneurysm who received EVAR at Department of Vascular Surgery, The First Affiliated Hospital, Sun Yat-sen University from January 2009 to December 2018. There were 503 males and 37 females, aged of (69±8) years (range: 44 to 87 years). Clinical data including concomitant disease, aneurysm size and surgical data were collected and patients were followed up after operation. The cumulative survival rate was assessed using the Kaplan-Meier estimator and multivariate Cox regression was used to analyze the independent prognosis factors. Results: The technical success rate was 91.1% (492/540). The perioperative mortality rate was 1.3% (7/540) and the follow-up rate was 91.7% (489/533). The median follow-up time was 45(63) months (range: 1 to 133 months). The all-cause mortality rate was 21.3% (104/489) and the aneurysm-related mortality rate was 6.3% (31/489) during follow-up period. The overall cumulative survival rate of 1-, 3-, 5- and 10-year were 95.1%, 84.0%, 69.5% and 38.6%, respectively, while freedom from aneurysm-related death were 98.4%, 93.3%, 88.4% and 84.4%. During the follow-up period, the complications rate was 9.0% (44/489), and the re-intervention rate was 4.9% (24/489). Cox regression analysis showed that elder age (HR=2.15, 95%CI: 1.41 to 3.26, P<0.01), preoperative aneurysm rupture (HR=2.72, 95%CI: 1.78 to 4.15, P<0.01) and short neck aneurysm (HR=1.97, 95%CI: 1.07 to 3.61, P=0.029) were independent prognosis factors for long-term survival after EVAR. Connclusion: EVAR has low perioperative mortality, high technical success rate, and satisfactory mid-and long-term outcomes.
目的： 探讨腹主动脉瘤腔内修复术（EVAR）的中长期治疗效果。 方法： 回顾性分析2009年1月至2018年12月540例在中山大学附属第一医院血管外科接受EVAR治疗的腹主动脉瘤患者的临床资料。男性503例，女性37例，年龄（69±8）岁（范围：44~87岁）。收集患者合并症、术前动脉瘤参数、手术数据等资料，并对患者进行术后随访，了解患者术后生存、并发症发生及二次干预等情况。应用Kaplan-Meier法计算累积生存率，Cox多元回归分析远期生存预后因素。 结果： 492例获得技术成功，技术成功率为91.1%（492/540）。围手术期病死率为1.3%（7/540）。489例获得随访，随访率为91.7%（489/533）。随访时间45（63）个月（范围：1~133个月）。随访期间全因死亡104例，动脉瘤相关死亡31例，全因病死率21.3%（104/489），动脉瘤相关病死率6.3%（31/489）。1、3、5和10年累积总体生存率分别为95.1%、84.0%、69.5%和38.6%，免于动脉瘤病死率分别为98.4%、93.3%、88.4%和84.4%。随访期间手术相关并发症发生率为9.0%（44/489），二次干预率为4.9%（24/489）。多因素分析结果显示，高龄（HR=2.15，95%CI：1.41~3.26，P<0.01）、术前动脉瘤破裂（HR=2.72，95%CI：1.78~4.15，P<0.01）和短瘤颈（HR=1.97，95%CI：1.07~3.61，P=0.029）是EVAR术后远期生存的独立预后因素。 结论： EVAR治疗后患者的围手术期病死率低，技术成功率高，具有良好的中远期结果。.
Keywords: Aortic aneurysm, abdominal; Prognosis; Stents.