Abstract:
OBJECTIVE:Experimentally measured pullout forces for stent grafts (SGs) are used in clinical discussions and as reference values in bench studies and computer simulations. Previous values of these forces are available from studies in which the SG was pulled out in the straight caudal direction. However, clinical and numerical studies have suggested that displacement forces acting on SGs are directed more anteriorly. The objective of this study was to measure pullout forces as a function of angulation and to test the hypothesis that pullout forces decrease with increasing angulation. METHODS:Six different SGs (Bolton Treovance, Cook Zenith Flex, Cook Zenith LP, Medtronic Endurant, Medtronic Talent, and Vascutek Anaconda) were deployed in fresh bovine aortas, then pulled out by an electronic motor at 1 mm/s, while tension force was measured continuously with a digital load cell. The SG off-axis angulation was changed from 0 to 90 degrees in increments of 10 degrees. The test system was submerged in a custom-built temperature-controlled saline bath at 37°C. At least three tests were performed for each device at each angle (with the exception of the Cook Zenith Flex, which experienced plastic deformation of its barbs after a single test per device). Each aortic specimen was used only once and then discarded. Hand-sutured graft anastomoses were also tested at 0 degrees to provide a reference value. RESULTS:A total of 374 pullout tests were performed for the SGs and anastomoses. Sixty-four tests were excluded because of failure of the aorta or apparatus before device pullout. The remaining 310 tests showed pullout forces that demonstrated a decrease in the average pullout force for all six devices from 0 to 90 degrees (Bolton Treovance from 39.3 N to 23.9 N; Cook Zenith Flex from 59.8 N to 48.9 N; Cook Zenith LP from 50.3 N to 41.8 N; Medtronic Endurant from 29.9 N to 25.8 N; Medtronic Talent from 6.0 N to 5.5 N; and Vascutek Anaconda from 37.0 N to 30.3 N). For reference, the mean pullout force for the hand-sutured anastomoses was 63 N. CONCLUSIONS:This study reports for the first time the change in pullout force with angulation, showing a general pullout force decrease with increasing angle. With a larger number of samples than in previous studies, our results provide updated benchmark data that can be used for clinical discussions, computational and experimental studies, and future device design.
journal_name
J Vasc Surgjournal_title
Journal of vascular surgeryauthors
Rahmani S,Grewal IS,Nabovati A,Doyle MG,Roche-Nagle G,Tse LWdoi
10.1016/j.jvs.2014.06.115subject
Has Abstractpub_date
2016-02-01 00:00:00pages
493-9issue
2eissn
0741-5214issn
1097-6809pii
S0741-5214(14)01284-1journal_volume
63pub_type
杂志文章abstract:PURPOSE:This study evaluated the accuracy of central luminal line (CLL) measurements in quantifying stent graft migration. The bias of the CLL technique together with observer variability were assessed. METHODS:Stent grafts were deployed in plastic aortic phantoms at fixed locations from two side branches. Each phanto...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2011.10.083
更新日期:2012-04-01 00:00:00
abstract:BACKGROUND:The mechanisms of neointima formation after synthetic vascular grafting are not clear. The aim of this study was to investigate the intima and perigraft adventitia remodeling process in terms of cell apoptosis versus proliferation after synthetic patch implantation. METHODS:Female Merino sheep were randomiz...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2002.123749
更新日期:2002-08-01 00:00:00
abstract::Isolated superior mesenteric artery dissection is a relatively rare vascular pathology. However, the number of recent case reports has shown an increasing incidence with the widespread use of computed tomography imaging for abdominal pain. Here we report three cases of isolated superior mesenteric artery dissection. T...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2007.08.052
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:Outcomes of revascularization for critical limb ischemia (CLI) have historically been patency, limb salvage, and survival. Functional status and quality of life have not been well described. This study used functional and quality of life assessments to measure patient-centered outcomes after revascularizatio...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2014.01.067
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND:Celiac artery compression syndrome (CACS) remains a controversial diagnosis, despite several reported series documenting therapeutic efficacy of CA decompression. Traditional therapy consists of open surgical decompression, but since 2000, five isolated case reports have been published in which CACS has been...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2008.12.078
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVES:We investigated the utility of color duplex ultrasound (CDU)-derived common femoral artery (CFA) hemodynamics for detecting significant aortoiliac occlusive disease and predicting its severity. METHODS:From January 1997 to June 2001, 132 consecutive patients with lower extremity arterial insufficiency under...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2003.282
更新日期:2003-05-01 00:00:00
abstract::With the use of a multifinger photoplethysmography system, finger systolic blood pressures were measured before and after cooling in patients with Raynaud's disease. In 30 patients with arteriographically documented arterial obstructions, significantly low digital pressures were found in 91% of fingers with cold sensi...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1986.avs0030456
更新日期:1986-03-01 00:00:00
abstract:OBJECTIVE:The two techniques for carotid endarterectomy (CEA)--conventional (C-CEA) and eversion (E-CEA)--have different effects on blood pressure. This study compared sympathetic activity after C-CEA and E-CEA, as measured by renin and catecholamine levels. METHODS:E-CEA (n = 40) and C-CEA (n = 34) were performed in ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2012.01.051
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVE:Based on the significant number of unfilled vascular fellowship positions in the 2004 National Residency Matching Program (NRMP) and the perception of program directors that the quality of candidates is deteriorating, the Issues Committee of the Association of Program Directors in Vascular Surgery (APDVS) exp...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2005.05.011
更新日期:2005-09-01 00:00:00
abstract::Two simple methods for direct antibacterial protection of synthetic vascular grafts were investigated. In the first protocol the highly protein-bound antibiotics nafcillin (90% protein bound), cefazolin (80%), and cefamandole (70%) were added directly to preclotting blood. Knitted Dacron grafts preclotted in the prese...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1984.avs0010372
更新日期:1984-03-01 00:00:00
abstract::The treatment of unilateral iliac occlusion remains controversial. We report our experience with femorofemoral bypass (FF) and iliofemoral bypass (IF). One hundred sixty-two FFs and 82 IFs were performed during a 25-year period. Demographic characteristics of the two groups were similar. Operative indications included...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1992-12-01 00:00:00
abstract:OBJECTIVE:Hybrid repair of thoracoabdominal aortic aneurysms (TAAA) may reduce morbidity and mortality in high-risk candidates for open repair. This study reviews the outcomes of hybrid TAAA repair for Crawford extent I-III TAAA in high-risk patients in comparison to patients who underwent concurrent open TAAA repair. ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2008.12.051
更新日期:2009-07-01 00:00:00
abstract:PURPOSE:Polybutester suture is more easily stretched than other vascular sutures and may produce more compliant anastomoses. The effects of using polybutester and polypropylene sutures were compared acutely in arterial autografts and in chronic implants of cephalic vein grafts into the femoral arteries of dogs. METHOD...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.1993.44787
更新日期:1993-11-01 00:00:00
abstract:PURPOSE:Our purpose was to investigate the hemodynamic theory that the blood flow rate through a stenotic arterial graft is limited by the onset of turbulence, which acts as a barrier at peak systole against further increases in systolic flow. METHODS:We used duplex ultrasonography to examine 25 stenotic infrainguinal...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(96)80003-6
更新日期:1996-03-01 00:00:00
abstract::From 1957 to 1985, 116 consecutive operations for recurrent carotid stenosis were performed in 99 patients at the University of California, San Francisco. Ninety-four patients underwent 103 reoperations for primary recurrent stenosis (nine patients had bilateral repairs). Seventy-two operations (70%) were performed to...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1987-03-01 00:00:00
abstract::Inferior vena caval obstruction is an unusual but important clinical problem for which adequate treatment previously has not been available. Recently, a polytetrafluoroethylene (PTFE) graft with external rigid spiral supports was developed that appeared particularly applicable to the venous system. In 18 dogs a 15 cm ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:
更新日期:1984-09-01 00:00:00
abstract:OBJECTIVE:Compression of the left common iliac vein (LCIV) by the right common iliac artery is an anatomic variant that may increase the risk for LCIV thrombosis. The incidence of LCIV compression in patients with abdominal aortic aneurysms (AAA) is unknown, however. The aim of this descriptive anatomic study was to de...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2006.05.046
更新日期:2006-09-01 00:00:00
abstract:OBJECTIVE:Adequate proximal neck length is important for proper endovascular treatment of abdominal aortic aneurysms (AAAs). Placement of endografts in AAAs with relatively short proximal necks may require covering the origin of accessory renal arteries. Exclusion of these arteries carries the theoretical concern of re...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2001.118814
更新日期:2001-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to review our experience over the last decade with the dorsalis pedis bypass for ischemic limb salvage in patients with diabetes mellitus. METHODS:The study was a retrospective analysis of a computerized vascular registry and chart review. From January 10, 1990 to January 11, 20...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1067/mva.2003.125
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVE:Successful thoracic endovascular aneurysm repair (TEVAR) requires adequate proximal and distal fixation and seal. We report our experience of planned celiac artery coverage during endovascular repair of complex thoracic aortic aneurysms (TAA). METHODS:Since 2004, 228 patients underwent TEVAR under elective (...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2010.06.105
更新日期:2010-11-01 00:00:00
abstract:INTRODUCTION:Klippel-Trenaunay Syndrome (KTS) is an uncommon congenital disorder of uncertain etiology that comprises the clinical triad of varicose veins, port wine stain, and bony or soft-tissue hypertrophy. The literature suggests that the deep venous system is often under-developed. We propose that duplex venous ul...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2008.01.040
更新日期:2008-06-01 00:00:00
abstract:OBJECTIVES:Endoscopic ligation of perforating veins is useful in treatment of perforating vein incompetence. Over the last few years the topic of interest has been the medial side of the lower leg; however, laterally located venous ulcers (10% of all) are of equal importance. Our poor results with lateral subfascial en...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(03)01045-0
更新日期:2003-12-01 00:00:00
abstract:OBJECTIVE:Many studies have been published regarding the influence of smoking on the incidence and prevalence of peripheral arterial disease (PAD). A systematic review was performed to establish the magnitude of the effect of smoking on the development of PAD, and a possible dose-response relationship. METHODS:English...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,评审
doi:10.1016/j.jvs.2004.08.049
更新日期:2004-12-01 00:00:00
abstract:OBJECTIVE:The addition of skin perfusion pressure (SPP) might enhance the predictive value of the Society for Vascular Surgery Wound, Ischemia, and foot Infection (WIfI) classification system. The purpose of the present study was to evaluate the SPP for each WIfI classification stage among patients with foot wounds by ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jvs.2019.01.045
更新日期:2019-10-01 00:00:00
abstract:PURPOSE:To investigate the relation between endoleaks and intraaneurysmal pressure (IAP) and the effect of coil embolization in the management of endoleaks. METHODS:The infrarenal aorta of a dog (n = 15) was replaced by a polytetrafluoroethylene aneurysm containing a pressure transducer. Group I (n = 4) had untreated ...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/s0741-5214(98)70320-9
更新日期:1998-03-01 00:00:00
abstract::Epithelioid hemangioendothelioma (EHE) is an extremely rare vascular tumor of intermediate malignancy. Generally it develops from the peripheral veins (usually the femoral vein). We report on a case of EHE of the radial artery, developed in a 26-year-old male patient, which presented as a solitary painless mass. He ha...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2004.10.036
更新日期:2005-01-01 00:00:00
abstract::Transcatheter embolization has emerged as the treatment of choice for pelvic arteriovenous malformations (AVMs), because surgical resection may be difficult and is associated with a high recurrence rate. We report a patient with a large recurrent pelvic AVM in whom transcatheter embolization was not feasible. This pat...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2004.02.004
更新日期:2004-06-01 00:00:00
abstract:OBJECTIVE:Smoking not only increases the risk that coronary heart disease will develop but also morbidity and mortality in patients with known coronary atherosclerosis and after coronary artery bypass grafting. Excessive generation of reactive oxygen species (ROS) has been implicated as the final common pathway for the...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2009.09.040
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVE:Endovascular treatment of peripheral artery aneurysms (PAAs) in patients with Behçet disease is controversial. We report a single-institution experience of primary stent graft repair of PAAs in Behçet patients. METHODS:Behçet patients who had endovascular stent graft repair of PAAs at a single center between...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2020.03.031
更新日期:2021-01-01 00:00:00
abstract:OBJECTIVE:Data regarding the cardiac abnormalities associated with Stanford type B aortic dissection (TBAD) and whether these abnormalities are related to outcomes are limited. We describe the prevalence of cardiac abnormalities in patients with TBAD as detected by echocardiography. METHODS:This retrospective review i...
journal_title:Journal of vascular surgery
pub_type: 杂志文章
doi:10.1016/j.jvs.2018.09.050
更新日期:2019-06-01 00:00:00