Midterm outcomes of femoral arteries after percutaneous endovascular aortic repair using the Preclose technique

OBJECTIVE: Percutaneous access during endovascular aortic repair has been shown to be feasible and safe using a suture-mediated closure device ("Preclose" technique) for closure of up to 24F introducer sheaths. The purpose of this study is to examine the late outcomes of those femoral arteries repaired in this manner. METHODS: The Preclose technique has been previously described. Briefly, the technique involves two Perclose Proglide devices deployed in the femoral artery prior to insertion of the large diameter introducer sheath and then closure of the arteriotomy by tying down knots of the Proglide following removal of the sheath. The medical records of all patients who underwent endovascular aortic repairs using the Preclose technique between December 2004 and August 2007 were reviewed. Follow-up protocol consisted of computed tomography (CT) angiograms performed at 1, 6, and 12 months, and annually thereafter. All Preclose patients who had at least a 6-month postoperative scan were included in the study. For each patient, the most recent postoperative scan was compared with the preoperative scan for evidence of any new anatomic abnormalities of the femoral artery such as dissection, stenosis, or pseudoaneurysm. Three-dimensional post processing with multiplanar reconstructions was also performed as necessary to confirm axial scan findings. RESULTS: A total of 292 patients underwent percutaneous endovascular aortic repairs (TEVAR-125, EVAR-167). Four hundred thirty-two femoral arteries were closed with 870 devices. Four hundred eighteen vessels were approximated with two devices, while 30 arteries required three devices for hemostasis and an additional four vessels only required a single device. Two hundred seventy-eight (64.3%) vessels were accessed with sheaths 18 to 24F. Four hundred eight femoral arteries (94.4%) were closed successfully with the Preclose technique. There were 100 patients (TEVAR-35, EVAR-65) who had adequate postoperative CT scan at 6-months or later. The mean follow up was 11.6 +/- 5.0 months. Of the 156 femoral arteries in these 100 patients repaired using the Preclose technique, there were 3 late complications in 3 patients, 1 asymptomatic femoral artery dissection, and 2 femoral artery pseudoaneurysms requiring surgical repair, resulting in a late complication rate of 1.92% (3/156). CONCLUSION: Percutaneous closure of femoral arteries after large diameter introducer sheaths using the Preclose technique has a low incidence of early and late complications related to the closure site.     

评估Perclose Proglide血管缝合器在胸主动脉夹层腔内修复术中的应用

目的探讨Perclose Proglide血管缝合器在胸主动脉夹层腔内修复术(TEVAR)中的应用价值。方法回顾性分析在我科采用TEVAR治疗Standford B型主动脉夹层患者106例,术后1个月、1年行CTA复查,分别测量术前、术后1个月、术后1年穿刺区股动脉直径大小。结果 106例患者均顺利完成覆膜支架腔内隔绝术,共使用223把缝合器,其中97例患者2把缝合器,7例患者3把缝合器,2例患者4把缝合器。术前、术后1个月、术后1年CTA测量穿刺区股动脉直径比较差异无统计学意义(P均0.05)。结论 Perclose Proglide血管缝合器在TEVAR中封闭股动脉穿刺道安全、可靠,且对股动脉管径无明显影响,值得推广。     

Perioperative differences between endovascular repair of thoracic and abdominal aortic diseases

BACKGROUND: With the US Food and Drug Administration approval of the TAG thoracic device, more thoracic pathologies are being treated using endovascular techniques. Although endovascular abdominal and thoracic aortic repairs have some apparent similarities, there are substantive anatomic, pathologic, and technical differences that could impact perioperative outcomes. The purpose of this study is to identify these differences. METHODS: During a 5-year period, 121 endovascular thoracic aortic repairs (TEVAR) and 450 abdominal aortic repairs (EVAR) were performed at a single institution. Preoperative, intraoperative, and early postoperative data were prospectively collected and retrospectively reviewed. Aggregate outcome measures were compared between the two cohorts, with statistical significance achieved at P < .05. RESULTS: The mean age of patients undergoing EVAR was 72.8 +/- 8.3 compared with 68.3 +/- 13.9 for TEVAR (P = .02). More women underwent TEVAR (30.6% vs 11.1%, P < .001). Aneurysms undergoing TEVAR were larger than those for EVAR (62.0 mm vs 58.3 mm, P = .01). Intraoperatively, EVAR required 26.2 minutes of fluoroscopy compared with 22.1 minutes for TEVAR (P < .001). The amount of contrast used was higher in TEVAR (133.6 mL vs 93.6 mL, P < .001). The mean procedure times were 164 minutes for EVAR and 115 minutes for TEVAR (P < .001). Iliac conduits were required in 46 patients (10.2%) undergoing EVAR, and in 24 (19.8%) undergoing TEVAR (P = .007). The 30-day or in-hospital mortality was 2.0% for EVAR and 5.0% for TEVAR (P = NS). The median length of stay was longer for TEVAR (3 days vs 2 days, P =.034). There were 54 postoperative complications in 36 TEVAR patients (29.8%), including 13 neurologic (10.7%), 8 renal (6.6%), 7 pulmonary (5.8%), 6 ischemic (5.0), and 5 (4.1%) hemorrhagic events. Among the EVAR group, 136 (30.2%) patients had postoperative complications, which included 45 ischemic (10.0%), 34 wound (7.6%), 22 renal (4.9%), 12 cardiac (2.7%), 8 pulmonary (1.8%), 5 gastrointestinal (1.1%), and 4 neurologic (0.9%) events. CONCLUSIONS: A relatively higher proportion of women underwent TEVAR than EVAR, and this was reflected in the greater need for iliac conduits to accommodate the larger delivery catheters of the thoracic devices. Intraoperative imaging techniques were also different, and TEVAR required higher contrast volumes despite shorter overall procedure times. The incidence of strokes and spinal cord ischemia was also higher during TEVAR. Despite apparent similarities of devices and techniques, EVAR and TEVAR are fundamentally different procedures with different perioperative outcomes.     

完全穿刺技术在腹主动脉瘤腔内修复术中的应用

目的 探讨应用Perclose ProGlide缝合器完全穿刺技术行腹主动脉瘤腔内修复术的安全性和有效性.方法 2008年5月至2010年4月,36例腹主动脉瘤患者完全穿刺下行腔内修复术治疗.其中男性30例,女性6例;平均年龄68岁.所应用的支架型血管包括:3例Endurant,13例Talent,20例Zenith.18～24 F的鞘管预置两把ProGlide,14～16 F的鞘管预置单把ProGlide.缝合动脉切口时取出鞘管并将线结下滑收紧.统计技术成功率、相关并发症及手术操作时间.术后3、6、9、12个月及其后每年进行CT血管造影随访.结果 20例局部麻醉,16例全身麻醉.68条股动脉共应用128把ProGlide,其中38条股动脉各应用2把,8条各应用3把,2条各应用4把,20条各应用1把.63条股动脉(63/68,92.6%)技术操作成功,2条中转切开缝合,3条出现血肿,无需手术处理.平均随访时间(12±3)个月.1例于术后3个月出现无症状的动脉夹层.结论 完全穿刺技术在腹主动脉瘤腔内修复术中的应用是安全和有效的.由于可能需要切开缝合,建议在杂交手术室中操作.     

Die Fasziennaht zum Verschluss von perkutanen Gef??zug?ngen nach endovaskul?ren Aorteneingriffen

Endovascular repair of aortic lesions requires large bore femoral access (up to 26?F) for transfemoral stent graft delivery. Surgical cut down of the common femoral artery is still the most frequently used technique for groin management in EVAR and TEVAR procedures even though it prolongs operating time, increases tissue trauma and is associated with a variety of potential complications. It has been shown that a total percutaneous access using closure devices can reduce operating time, tissue trauma and as a result the time to ambulation. An alternative technique to simplify groin management in endovascular procedures has been described in 1997 to avoid surgical cut down and the use of expensive closure devices. This technique is today known as the fascia suturing technique. After the percutaneous procedure is completed a small oblique incision is made in the groin fold on either side of the puncture site exposing the cribriform fascia and a deep paravascular suture of the fascia is performed followed by a self-closing knot to cover the common femoral artery access. The published literature is summarized and our clinical experiences with the fascia suturing closure technique, which has been exclusively used for closure of all large (16?C26?F) femoral access sites in a total of 110 groins over an 11-month period, are presented.     

Percutaneous thoracic and abdominal aortic aneurysm repair: techniques and outcomes

Endovascular repair of infrarenal abdominal aortic aneurysms (EVAR) has become a widely accepted treatment modality. The conventional approach of an EVAR involves bilateral groin incisions to expose the femoral arteries followed by introducer sheath placement, which is typically performed with the use of general or epidural anesthesia. As technology trends toward less invasive methods and sheath sizes become smaller, the use of a total percutaneous approach to endovascular repair of aortic pathology is becoming more common. In this review, we present a brief history of percutaneous closure devices for common femoral artery access, factors important in patient selection, the technique of performing a percutaneous EVAR procedure, early and late complications, and overall outcomes of percutaneous approaches for the endovascular treatment of aortic pathology.     

Management of arterial access for thoracic endovascular aortic repair

Problems associated with arterial access can sometimes occur in elder patients with arteriosclerosis. This study examined the management of patients with restricted arterial access using thoracic endovascular aortic repair (TEVAR). Thirty-four consecutive patients underwent TEVAR at our institution. TEVAR was performed using a Gore TAG device (n = 20), Talent thoracic stent graft (n = 10), and a homemade endoprosthesis device (n = 3). The sizes of the applied sheath introducer or delivery catheter were 20 Fr (n = 1), 22 Fr (n = 12), 24 Fr (n = 17), and 25 Fr (n = 4). Although the procedure was completed in all cases, additional procedures for catheter preparation were required in 8 patients (23.5%). Percutaneous transluminal angioplasty (PTA) with stents placed in the iliac artery (n = 3) or the installation of a bypass conduit (n = 4) was also carried out. For the remaining cases, in which advancement of the TAG sheath introducer to the appropriate position was not possible, the endoprosthesis was deployed without the sheath introducer. Two cases required PTA after the procedure due to an injury of the iliac artery. Although some additional procedures may be required, TEVAR can be performed in patients with problems of arterial access.     

A review on the use of steerable sheaths in complex endovascular aortic repair

Complex aortic aneurysms are now more commonly treated endovascularly, and often require a fenestrated-branched endovascular aneurysm repair. The use of steerable sheaths can improve the technical success rate in catheterisation of target visceral vessels and reduce the surgical risks associated with these complicated procedures. There are several commercially available steerable sheaths in the market, but similar devices can be homemade using different endovascular instruments. Steerable sheaths allow catheterisation of downward orientated branches more easily through a transfemoral approach. The risks associated with a traditional upper extremity access can be minimalised. They are also described in the use of several other situations during endovascular aortic repairs. Limitations to this technique are the availability of the device, the stability of the sheath curvature, the difficulty to deliver instruments in a tight curve and the associated complications if large sheaths are used. Steerable sheaths can be used as a primary intent when challenging anatomy is anticipated or as an adjunct when standard procedures are not successful.     

Percutaneous repair of aortic aneurysms: a prospective study of suture-mediated closure devices.

PURPOSE: To evaluate prospectively the safety and efficacy of totally percutaneous placement of abdominal and thoracic aortic endografts using the Prostar XL suture-mediated closure system. METHODS: From January 2002 to January 2005, we attempted to insert percutaneously all bifurcated abdominal aortic and thoracic endografts. Consecutive patients (25 men, four women), with mean age 74.9 years (range 44-84), underwent endovascular repair for 20 abdominal aortic aneurysms (AAA) and nine thoracic aortic aneurysms (repeat operation in one case). Endografts used included 21 Zenith (Cook), eight Talent (Medtronic), one AneuRx (Medtronic). For the technique, two Prostar XL 8F were used to close 22-24F access sites and one Prostar XL 10F to close 16F access sites. RESULTS: Procedural success was achieved in 21/29 (72.4%) patients and in 39/47 access sites (83%). Closure of 22-24F access sites with tandem 8F Prostar devices was successful in 23/29 (79.3%) cases. Closure of 16F access sites with 10F Prostar device was successful in 16/18 (88.8%) cases. There were seven peri-procedural failures requiring surgery to repair the femoral artery in three cases. Four access complications healed without intervention. Overall 25/29 (86.2%) patients had complete percutaneous repair. No late complications were detected during follow-up (median 17.5 months). CONCLUSIONS: Percutaneous treatment of patients with AAA and thoracic aneurysms is feasible in most cases, with a very low risk of access-related complication, providing that the operator has sufficient practical experience of this technique.     

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??Comparation between blood vessel suture instrument and traditional surgical suture in EVAR surgery for abdominal aortic aneurysm: An analysis of 130 cases ZHANG Zheng, CHEN Zhong, TANG Xiao-bin, et al. Beijing Anzhen Hospital ??Capital Medical University, Beijing 100029, China
Corresponding author??CHEN Zhong, E-mail??chenzhong8658@vip.sina.com
Abstract Objective To investigate the application of the Perclose Proglide vascular closure devices in the endovascular abdominal aortic aneurysm repairing operation and its significance. Methods The clinical data of 130 cases of endovascular abdominal aortic aneurysm repairing operation performed between March 2013 and February 2015 in Department of Vascular Surgery??Beijing Anzhen Hospital of Capital Medical University were analyzed retrospectively. Among them, 69 cases were treated with Perclose Proglide vascular closure devices to suture the puncture site of the femoral arteries and 61 cases were treated with the traditional surgical suture to close the puncture site of the femoral arteries. The relationship between the two groups and various clinicopathological factors of patients with abdominal aortic aneurysm were analyzed by Chi-square using statistical software SPSS17.0. The clinicopathological factors include operation successful rate??operation time??intraoperative blood loss??hospital stay??cost of operation??wound healing??lower limb ischemia and so on. Results Analysis using chi-square showed that Perclose Proglide vascular closure devices group was obviously better than the other group in operative time, intraoperative blood loss and hospital stay (P<0.05). Conclusion Comparing with the traditional surgical suture method??Perclose Proglide vascular closure devices are safe and effective. The patients have less injury and can recover more quickly??The Perclose Proglide vascular closure devices are worthy of clinical popularization??     

Conversion of failed endovascular infrarenal aortic aneurysm repair with fenestrated/branched stent grafts

Fenestrated and branched endovascular aneurysm repair (F/BEVAR) can be used to salvage infrarenal endovascular aneurysm repairs (EVARs) that fail secondary to inadequate proximal seal or progressive proximal aneurysmal disease. Extending the aneurysmal seal zone proximally can be performed without compromising flow to renal and visceral vasculature. Device planning requires adapting for prior endograft length and may involve a tubular or bifurcated design. Technical difficulties include navigating in the constrained space of the prior endograft and cannulating target vessels through suprarenal fixation devices. Strategies to optimize success include brachial/axillary access, use of diameter reducing ties, preloaded wires, and steerable sheaths. Reported technical success rates range from 85% to 99% and long-term freedom from re-intervention rates range from 67% to 83%. F/BEVAR in patients with prior EVAR, compared with those without, is associated with similar morbidity, mortality, and freedom from re-intervention, albeit with increased operative and fluoroscopic time. Compared with open surgery, F/BEVAR is associated with decreased morbidity and mortality. Alternatives to F/BEVAR treatment for inadequate proximal seal after infrarenal EVAR include open conversion, chimney/snorkel endografting, physician-modified endografting, balloon expandable uncovered stent, embolization, and endostapling.     

Mid-term follow-up of percutaneous access for standard and complex EVAR using the ProGlide device

ObjectivesEndovascular Aneurysm Repair is an established treatment for abdominal aortic aneurysm which requires arterial access via the groin. Most centres perform percutaneous ultrasound-guided access into the common femoral artery for delivery of the stent graft. The profile of endovascular devices necessitates large sheath sizes, therefore formal closure of the arterial puncture site is required. Various percutaneous devices are available, with data lacking on efficacy and mid-term safety profile. We present outcomes from a single centre with the Perclose ProGlide? (Abbott Vascular Devices, CA, USA) suture-mediated system, using the well described “pre-close” technique.Materials & methodsData were collected from operative records and electronic medical records. Patients undergoing standard (EVAR) or complex (F/B-EVAR) aneurysm repair between March 2015 and September 2019 were included. Complications were recorded per-patient and per-groin procedure.Results266 patients were included; 182 (68.4%) standard infrarenal EVAR, 84 (31.6%) F/B-EVAR. There were a total of 484 groin procedures performed. Intraoperative Perclose ProGlide? success was 98.1% (per patient) or 99.0% (per groin procedure). 30-day groin complication rate was 6.1% (per patient) or 3.1% (per groin procedure). There were no pre- or peri-operative factors which predicted the occurrence of groin complications. The rate of groin complications was not related to sheath size.ConclusionsOur data support the use of percutaneous access with a pre-close technique for a variety of endovascular aneurysm repair procedures with both large- and small-bore access. The Perclose ProGlide? system provides excellent mid-term complication-free and reintervention-free outcomes for groin procedures.     

Endovascular stent-graft repair of failed endovascular abdominal aortic aneurysm repair

Despite high initial technical success, the long-term durability of endovascular abdominal aortic aneurysm repair (EVAR) continues to be a concern. Following EVAR, patients can experience endoleaks, device migration, device fractures, or aneurysm growth that may require intervention. The purpose of this study was to review all patients treated with secondary endovascular devices at our institution for failed EVAR procedures. Over an 8-year period, 988 patients underwent EVAR, of whom 42 (4.3%) required secondary interventions involving placement of additional endovascular devices. Data regarding patient characteristics, aneurysm size, initial device type, time until failure, failure etiology, secondary interventions, and outcomes were reviewed. The mean time from initial operation until second operation was 34.1 months. Failures included type I endoleaks in 38 patients (90.5%), type III endoleaks in two patients (4.8%), and enlarging aneurysms without definite endoleaks in two patients (4.8%). The overall technical success rate for secondary repair was 92.9% (39/42). Perioperative complications occurred in nine patients (21.4%), including wound complications (n = 6), cerebrovascular accident (CVA) (n = 1), foot drop (n = 1), and death (n = 1). Mean follow-up following secondary repair was 16.4 months (range 1-50). Eighty-six percent of patients treated with aortouni-iliac devices had successful repairs compared to 45% of patients treated with proximal cuffs. Ten patients (23.8%) had persistent or recurrent type I or type III endoleaks following revision. Of these, four had tertiary interventions, including two patients who had additional devices placed. Failures following EVAR occur in a small but significant number of patients. When anatomically possible, endovascular revision offers a safe means of treating these failures. Aortouni-iliac devices appear to offer a more durable repair than the proximal cuff for treatment of proximal type I endoleaks. Midterm results indicate that these patients may require additional procedures but have a low rate of aneurysm-related mortality. Longer-term follow-up is necessary to determine the durability of these endovascular revisions.     

Guidewires, Catheters, and Sheaths Used for Thoracic Endografting Procedures

Abstract   Background: Endovascular repair represents an option becoming progressively more integral to the treatment of thoracic aortic pathology. Effective use by practitioners of the most appropriate endovascular equipment is essential to the continued growth of this treatment modality. This article aims to provide an overview of the guidewires, catheters, and sheaths employed in the practice of thoracic endovascular aortic repair (TEVAR). Methods: We reviewed our current utilization of guidewires, catheters, and sheaths in TEVAR. Concurrently, we conducted a survey of the present medical literature with regard to the materials and methods used in this procedure by other cardiothoracic surgeons, vascular surgeons, and interventional radiologists. Results: Fundamental principals of the guidewires, catheters, and sheaths used in TEVAR are consistent across the spectrum of specialists performing this procedure. However, considerable variation exists in the specific products used by practitioners. Conclusions: The importance of proper training and experience with the endovascular equipment used in TEVAR cannot be understated. We believe the endovascular tools discussed in this article offer a proper selection for safe and effective performance of these procedures.     

Hybrid procedure for combined descending thoracic and abdominal aortic aneurysms

In patients with previous infrarenal abdominal aortic aneurysm (AAA) repair, the risk of spinal cord ischemia increases after thoracic endovascular aortic repair (TEVAR) for a descending thoracic aortic aneurysm (DTAA). The case is a 67-year-old man with a 60 mm infrarenal AAA and a 73 mm DTAA. We performed the staged hybrid procedure for these aortic aneurysms. First of all we underwent a conventional AAA repair. The bilateral internal iliac arteries and a inferior mesenteric artery were preserved. In addition, the right leg of the tube graft was anastomosed to the right superficial femoral artery to facilitate access of TEVAR. Two months later we performed TEVAR for the DTAA. DTAA extended from the level of the 7th thoracic vertebra to that of the 11th thoracic vertebra. Although there was a certain risk of paraplegia, no complications occurred. The hybrid procedure for combined DTAA and AAA may be a valuable option.     

Use of an aortic bifurcation-sparing endograft facilitates hypogastric preservation during aortoiliac aneurysm repair

A significant percent of patients undergoing endovascular abdominal aortic aneurysm repair (EVAR) have concomitant common iliac artery aneurysms. While most of these patients will tolerate sacrifice of the hypogastric artery during repair, a subset will develop sequelae of hypogastric occlusion. EVAR was performed in two patients using a bifurcation-sparing unibody endograft (Powerlink, Endologix, Irvine, CA, USA). To avoid simultaneous bilateral hypogastric occlusion, one side was treated with coil embolization while the other was treated with a hypogastric graft (Viabahn, W L Gore and Associates, Flagstaff, AZ, USA). Access to the preserved hypogastric artery was obtained from a sheath inserted from the contralateral femoral artery and brought over the aortic bifurcation with the assistance of a 'rail-wire' traversing from the contralateral to ipsilateral femoral sheaths. The hypogastric limb was deployed simultaneously with the ipsilateral external iliac limb extension, creating a double-barrel flow lumen preserving both hypogastric and external iliac flow. At a mean follow-up of 5.1 months, both hypogastric limbs are patent and no endoleaks were observed. In conclusion, until commercially-produced branched hypogastric endografts are widely available, techniques such as those described above can allow for hypogastric preservation during aortoiliac aneurysm repair without the need for device modification or brachial access for hypogastric limb delivery.     

矫正性裸支架理念在治疗复杂主动脉疾病中的应用

目的探讨矫正性裸支架理念在复杂主动脉病变中应用价值。方法回顾分析接受腔内修复术联合矫正性裸支架治疗的13例复杂主动脉夹层及2例肾下腹主动脉瘤患者的资料。结果 13例主动脉夹层患者中,植入Valiant支架11例,Grikin支架2例;2例腹主动脉瘤患者均植入Zenith支架。对15例患者共植入矫正性裸支架19枚;主动脉夹层裸支架17枚,长度60~80mm,直径18~24mm;腹主动脉瘤裸支架2枚,长度均为60mm,直径分别为24mm和7mm。所有患者术后无严重并发症。15例中,14例完成随访,1例失访,随访期间无支架源性夹层或内漏发生及假性动脉瘤、髂支血栓形成。结论矫正性裸支架理念有助于拓宽主动脉病变腔内治疗的适应证,且安全、微创、近期疗效满意。     

Using bilateral iliac branch devices for endovascular iliac aneurysm repair

Introduction: The endovascular repair of bilateral iliac aneurysms using bilateral Iliac Branch Devices (IBDs) has been infrequently performed and reported. We aim to describe this technique and report on the results of our case series. Methods: Three different device designs are available. The procedural options include a totally transfemoral approach, or a combined transfemoral and brachial approach. Clinical records for patients who have had this procedure were reviewed. Results: The indications for the technique include bilateral common iliac artery aneurysm repair, with or without concomitant abdominal aortic aneurysm repair. Considerations include the timing of main body endovascular aortic aneurysm repair (EVAR) device introduction, the use of a proximal access site and the type of IIA stent‐graft that is used. Between 2007 and 2010, six patients had bilateral IBD implantation. All patients required an EVAR main body device in addition to bilateral IBDs. Eighty‐three per cent were males, mean age was 73 years. Mean follow up was 15 months. Technical success was obtained in 100% of cases. There was one branch occlusion (8.3%). There were no type I endoleaks. One patient had a type II endoleak. Conclusions: Bilateral IBDs can be used safely and with excellent rates of technical success and branch patency in appropriately selected patients.     

The impact of an interventional vascular specialty team on institutional endovascular aneurysm repair outcomes

BACKGROUND: Endovascular aortic aneurysm repair (EVAR) is a technically demanding, resource-intensive procedure associated with a significant learning curve. In July 2002, the Department of Defense allocated nearly $5,000,000 for "Advances in Medical Practice" (AMP) and EVAR within the six major military medical centers in the United States Army. We sought to determine the impact of several institutional changes associated with the use of these funds. METHODS: We performed a single-institution, retrospective comparison of our early EVAR outcomes in physiologically similar patients before and after the use of AMP capital and the acquisition of a trained and equipped endovascular operative team. Morbidity, mortality, and operative variables were the main outcomes. Mean follow-up interval was 17.6 months. RESULTS: As of November 2004, a total of 114 conventional open and endovascular AAA repairs were performed at our institution since our first EVAR in May 2000. Ten of 51 (20%) total AAA patients were treated with EVAR by a general vascular surgical team before the addition of an endovascular specialty team to the service in July 2002. An additional 28 of 63 (44%) patients have been treated with EVAR since that time for a total of 38 repairs. During the first year evaluated, 20% of aneurysms were repaired with EVAR versus 83% during the most recent year. Devices from four different manufacturers were used during the study interval. Patients treated by the endovascular team had significantly less mean estimated blood loss (EBL), packed red blood cells (PRBCs) transfused, intravenous (IV) contrast used, and shorter operative times. Morbidity, mortality, endoleaks, and other variables were similar. In linear regression analysis adjusting for complex, time-consuming repairs that required adjunctive procedures outside the realm of normal EVAR, endovascular team EVAR was independently associated with decreased mean operative time, EBL, PRBCs transfused, and IV contrast used. CONCLUSIONS: At a major military medical center, EVAR has become the preferred technique for the repair of abdominal aortic aneurysms. EVAR by a dedicated endovascular surgical team favorably impacts several important operative variables and may improve overall outcomes. Some of these operative variables may be device specific.     

腹主动脉瘤腔内修复术中血管缝合器与手术切开缝合临床应用对比研究

目的 探讨Perclose Proglide血管缝合器在腹主动脉瘤腔内修复手术中的应用及意义。方法 回顾性分析2013年3月至2015年2月,首都医科大学附属安贞医院血管外科临床确诊腹主动脉瘤并实施腔内修复术的130例病人资料。术中采用穿刺股动脉方法建立入路并使用Perclose Proglide 血管缝合器缝合69例（A组）,手术切开股动脉并缝合61例（B组）。分析两组在缝合成功率、手术时间、术中出血量、住院时间、手术费用、伤口愈合情况、有无下肢缺血等因素,探讨Perclose Proglide 血管缝合器在腹主动脉瘤腔内修复手术中的应用效果。结果 在130例病人中,与手术切开组（B组）相比,使用缝合器组（A组）手术时间更短、术中出血量少、且住院时间较短,且差异均有统计学意义（P<0.05）。结论 在腹主动脉瘤腔内修复手术中,经皮穿刺建立股动脉入路并使用Perclose Proglide 血管缝合器处理穿刺点,该方法安全有效,且创伤小,病人术后恢复更快,值得推广使用。