Abstract:
OBJECTIVE:Prosthetic femoral-popliteal bypasses are performed by using an end-to-side anastomosis, and disease can develop at the distal end; this can lead to poor long-term patency rates. Disturbed flow characteristics are hypothesized as being a major factor in promoting disease development. The objective of this study was to propose a new prosthetic femoral-popliteal bypass graft configuration specifically engineered to reduce or eliminate certain disease-influencing factors that act on the host artery. METHODS:The proposed device contains a streamlined bifurcation toward its distal end that results in two end-to-end anastomoses, rather than the single end-to-side anastomosis in the traditional procedure. Comparisons are made between idealized representations of it and the traditional end-to-side anastomosis for specific femoral artery flow rates. Qualitative results in the form of velocity vector plots and wall shear stress contour plots are compared, and quantitative results examine the wall shear stress magnitudes and gradients along the bed and roof of each graft model. RESULTS:Velocity vector plots through each junction suggest that the proposed graft configuration promotes streamlined flow and helps to reduce the magnitude of flow recirculation and separation regions associated with the traditional end-to-side anastomosis. At peak velocity, the flow separation region distal to the toe is eliminated, as evidenced by the change in toe wall shear stress from -0.2 Pa in the traditional anastomosis to +0.5 Pa in the proposed device. Normal fully developed flow occurs sooner in the distal host artery, approximately 15 mm downstream from the toe, unlike 20 mm in the conventional case. The proposed design results in reductions of up to 58% in peak wall shear stress and 86% in peak wall shear stress gradient during the decelerative phase of the femoral pulse in the vicinity of the artery bed below the toe. CONCLUSIONS:In vitro tests on the proposed device suggest that the streamlined nature of blood flow through the junction does result in less disturbed hemodynamic conditions within the host artery junction. Abnormal wall shear stress magnitudes and gradients are reduced, and normal fully developed flow occurs sooner in the distal host artery. This suggests that the proposed graft may have design attributes that are relevant in the search for increased prosthetic femoral-popliteal bypass graft patency rates. A drawback of the proposed device is that significant flow recirculation and separation exist within the prosthesis itself. CLINICAL RELEVANCE:The search for a viable alternative to traditional end-to-side anastomosis for prosthetic femoral-popliteal bypass procedures is ongoing. Prosthetic femoral-popliteal bypass procedures have low long-term patency rates, and there is a need for methods that increase the life span of the procedure. Although research is progressing on a variety of different fronts, this study is significant in that it reports on in vitro tests on a potential device that may increase bypass patency. The device is simple, may be manufactured from clinically proven materials, does not require any additional training in its use, and combines attributes of end-to-side anastomoses with those of end-to-end anastomoses. In addition, the design concept behind the device, the natural bifurcation, may be relevant in other aspects of cardiovascular surgery.
journal_name
J Vasc Surgjournal_title
Journal of vascular surgeryauthors
O'Brien TP,Grace P,Walsh M,Burke P,McGloughlin Tdoi
10.1016/j.jvs.2005.08.016subject
Has Abstractpub_date
2005-12-01 00:00:00pages
1169-75issue
6eissn
0741-5214issn
1097-6809pii
S0741-5214(05)01277-2journal_volume
42pub_type
杂志文章abstract:OBJECTIVE:Extracorporeal circulation induces ischemia/reperfusion injury in the small intestinal wall. One reason for this damage is a perfusion shift from the muscular toward the mucosal layer. This study investigated the effect of this perfusion shift on the small-intestinal apoptosis and proliferation. METHODS:Twen...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2015.05.043
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND:It is well known that the clinical outcome of patients with critical limb ischemia (CLI) is poor. However, the relationship between stress-related hormone levels and CLI outcome remains unclear. The aim of this study was to reveal the association of stress hormones with the risk of a perioperative major adve...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jvs.2018.11.044
更新日期:2019-09-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to identify whether revascularization by percutaneous transluminal angioplasty (PTA) for patients with intermittent claudication improved measures of functional performance including balance. METHODS:A prospective observational study was performed at a single tertiary vascular cente...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2013.05.106
更新日期:2013-12-01 00:00:00
abstract:PURPOSE:Magnetic resonance angiography (MRA) is a developing technique that provides arteriograms without the risks associated with iodinated contrast and arterial puncture or the expense of hospitalization. Prior reports have demonstrated the accuracy of peripheral vessel MRA for evaluation of the aorta through pedal ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/0741-5214(94)90222-4
更新日期:1994-12-01 00:00:00
abstract::CT scanning performed before and sequentially during the inhalation of stable xenon (32%), coupled with end-tidal xenon measurements, has made possible the routine construction of regional cerebral blood flow (rCBF) maps with resolution that approximates that of the CT scanner. The capability of obtaining quantitative...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1986-02-01 00:00:00
abstract::Among 42 patients who had undergone portacaval shunt (PCS) to treat bleeding esophageal varices, shunt patency was assessed with duplex sonography 1 month to 5 years postoperatively. Patency was confirmed in all patients (100%). Correlative angiograms confirming the sonographic findings were obtained in 24 patients. D...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1988.avs0080657
更新日期:1988-12-01 00:00:00
abstract:OBJECTIVES:Brachiobasilic arteriovenous fistulas (BBAVF) can be performed in one or two stages. We compared primary failure rates, as well as primary and secondary patency rates of one- and two-stage BBAVF at two institutions. METHODS:Patients undergoing one- and two-stage BBAVF at two institutions were compared retro...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2011.01.064
更新日期:2011-06-01 00:00:00
abstract::Lower limb arteriovenous (AV) access creation can be attempted in patients where upper limb options are exhausted. Utilization of the great saphenous vein as a conduit for AV access has been limited due to its small diameter and resistance to dilatation. Lower limb AV fistulas today are mostly either prosthetic grafts...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2013.06.082
更新日期:2013-12-01 00:00:00
abstract:OBJECTIVE:Information on outcome of patients with long superficial femoral artery (SFA) obstruction undergoing endovascular treatment is scarce. The present study reports results from a prospective multicenter registry designed to evaluate the safety, effectiveness, and patency of the aSpire self-expanding polytetraflu...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jvs.2006.08.032
更新日期:2007-01-01 00:00:00
abstract::Two hundred seventy-one of 1509 patients who underwent thoracoabdominal aortic repairs had either celiac or superior mesenteric or renal artery occlusive disease. These latter patients were treated by endarterectomy or bypass between June 20, 1960 and Jan. 10, 1991. After 1987, the 30-day survival rate was 93% (79 of ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00
abstract:PURPOSE:Noninvasive tests for the evaluation of chronic venous insufficiency (CVI) include quantitative photoplethysmography (QPG), air plethysmography, and duplex ultrasonography measurement of valve closure time (VCT). These tests have been shown to accurately identify the presence of CVI, define the disease, and loc...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(94)70211-x
更新日期:1994-06-01 00:00:00
abstract:BACKGROUND:Most commonly used outcome measures in peripheral arterial disease (PAD) provide scarce information about achieved patient benefit. Therefore, patient-reported outcome measures have become increasingly important as complementary outcome measures. The abundance of items in most health-related quality of life ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jvs.2013.08.099
更新日期:2014-03-01 00:00:00
abstract:PURPOSE:The endovascular approach to external iliac artery (EIA) disease extending into the common femoral artery (CFA) has been avoided because of problems with stent placement across the inguinal ligament. Surgical treatment for this disease distribution includes extensive endarterectomy or bypass procedures or both....
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2002.124374
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:Compared with angiogenesis, arteriogenesis is a distinct process based on the remodeling and maturation of pre-existing arterioles into large conductance arteries. Therapeutic angiogenesis has been proposed as a potential treatment for ischemic atherosclerotic diseases. Since a variety of angiogenic factors ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2008.11.004
更新日期:2009-04-01 00:00:00
abstract:OBJECTIVE:Preprocedural computed tomography angiography (CTA) assists in evaluating vascular morphology and disease distribution and in treatment planning for patients with lower extremity peripheral artery disease (PAD). The aim of the study was to determine the predictive value of radiographic findings on CTA and tec...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2017.02.031
更新日期:2017-09-01 00:00:00
abstract::We present three novel techniques for creation of (1) a steerable sheath, (2) a 4F snare device, and (3) dual anterograde and retrograde double-wire percutaneous transluminal angioplasty access technique using a single femoral puncture. These techniques were conceived and bench-tested in our institution, allowing the ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2012.03.271
更新日期:2012-09-01 00:00:00
abstract::Patch angioplasty using synthetic materials such as Dacron and polytetrafluoroethylene has become the standard of care after carotid endarterectomy. This method has been shown to reduce recurrent stenosis and stroke as compared to primary closure. Complications, including infection and pseudoaneurysm, are very rare. A...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2012.05.099
更新日期:2012-12-01 00:00:00
abstract:INTRODUCTION:Ruptured descending thoracic aortic aneurysm (rDTAA) is associated with high mortality rates. Data supporting endovascular thoracic aortic aneurysm repair (TEVAR) to reduce mortality compared with open repair are limited to small series. We investigated published reports for contemporary outcomes of open a...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jvs.2009.10.103
更新日期:2010-04-01 00:00:00
abstract::We report the case of a 13-year-old boy who, at 3 years of age, was a rear seat-restrained passenger in a high-speed motor vehicle crash necessitating segmental small-bowel resection. The patient remained well for 10 years; then he began to have exercise-induced fatigue in his lower extremities. Routine physical exami...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2006.06.040
更新日期:2006-11-01 00:00:00
abstract::Ascending aortic pseudoaneurysm following prior cardiac or aortic surgery is a rare entity that requires reoperation. Surgical repair is a complex procedure associated with high operative mortality. We report the case of a 76-year-old male patient with an ascending aortic pseudoaneurysm developing from distal anastomo...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2009.08.092
更新日期:2010-03-01 00:00:00
abstract:PURPOSE:We present a review of 35 patients who underwent an operation for subclavian (n = 18) or axillary (n = 17) vessel injury. In some patients, both an artery and a vein were damaged, resulting in a total of 30 arterial and 16 venous injuries. METHODS:The wounding source included a gunshot (n = 19), a stab wound (...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(98)70268-x
更新日期:1998-05-01 00:00:00
abstract:OBJECTIVE:Aortic reconstruction for complex thoracoabdominal aortic aneurysms (TAAAs) can be challenging, especially in patients with connective tissue disorders (CTDs) in whom tissue fragility is a major concern. Branched graft reconstruction is a more complex operation compared with inclusion patch repair of the aort...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2017.03.451
更新日期:2017-11-01 00:00:00
abstract::Vascular reconstructions in heavily contaminated fields can be particularly challenging. Prosthetic grafts are rarely suitable because of the risk of infection, but the saphenous vein is usually too small for isodiametric replacement of large arteries and veins. Although surgeons rarely consider the use of spiral vein...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1988.avs0080442
更新日期:1988-10-01 00:00:00
abstract:PURPOSE:The purpose of this study was the report of the results of a consecutive series of carotid endarterectomy (CEA), performed by one surgeon and independently assessed by a neurologist, in which the achievability of selective early control of the distal internal carotid artery (ICA) was prospectively recorded. ME...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2002.122028
更新日期:2002-07-01 00:00:00
abstract:PURPOSE:Although many studies have well established that carotid endarterectomy (CEA) is beneficial in selected patients with severe carotid disease, only a few large studies have focused on the durability of the surgical procedure. Carotid artery angioplasty and stenting (CAS) has recently been proposed as a potential...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2004.04.005
更新日期:2004-08-01 00:00:00
abstract:BACKGROUND:Endovascular treatment of ruptured abdominal aortic aneurysms (r-AAAs) has the potential to offer improved outcomes. As our experience with endovascular repair of r-AAA evolved, we recognized that the development of abdominal compartment syndrome (ACS) led to an increase in morbidity and mortality. We theref...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2005.08.033
更新日期:2005-12-01 00:00:00
abstract:PURPOSE:Outcome and venous patency after reconstruction in major pelvic and extremity venous injuries was studied. METHODS:We retrospectively reviewed 46 patients with 47 venous injuries. RESULTS:Injuries were caused by penetrating trauma in 37 extremities, blunt trauma in 6 patients, and were iatrogenic in 4 patient...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(98)70068-0
更新日期:1998-11-01 00:00:00
abstract::A 71-year-old woman came to the hospital with a 24-hour-old occlusion of the left limb of an aortoiliac knitted Dacron graft and was treated with an intra-arterial infusion of urokinase, 40,000 U/hr. Although the graft limb was successfully recanalized in 16 hours, the patient suffered a massive retroperitoneal hemorr...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1986-06-01 00:00:00
abstract:OBJECTIVE:Impaired venous drainage in severe chronic venous insufficiency (CVI) leads to microcirculatory overload, characterized by erythrocyte diapedesis and subsequent extravascular hemolysis, resulting in typical dermal hemosiderin deposition. We hypothesized that hemosiderin, normally absent, could be present in t...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2003.64
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:Lower extremity arterial revascularization (LEAR) is the gold-standard for critical lower limb ischemia (CLI). The goal of this study was twofold. First, we evaluated the long-term functional status of patients undergoing primary LEAR for CLI. Second, prognostic factors of long-term functional status and sur...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2009.08.051
更新日期:2010-02-01 00:00:00