Search Results
Results 651 - 700 of 3012
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O'Brien Thomas - - 2005
The long term patency of end-to-side peripheral artery bypasses are low due to failure of the graft generally at the distal end of the bypass. Both material mismatch between the graft and the host artery and junction hemodynamics are cited as being major factors in disease formation at the junction. ...
Tachibana Kazutoshi - - 2005
Two high-risk patients underwent an endovascular stent-grafting for thoracoabdominal aortic aneurysms (TAAA) following bypass-grafting to the visceral arteries. The first patient was a 73-year-old woman with severe ischemic heart disease (IHD) and chronic respiratory failure. The second patient was a 59-year-old woman with myelodysplastic syndromes (MDSs) and hepatic cell carcinoma ...
Evans D C - - 2005
A 58-year-old Caucasian male with end-stage renal disease and peripheral arterial disease was referred to us for management of his complex vascular access. His vascular access history included a left wrist primary fistula, a left upper arm access graft, a left leg loop graft, and multiple PermCaths in his jugular ...
Farhat Fadi - - 2005
Aortic valvular surgery is often challenging in patients with coronary artery bypass (CABG) using in situ right internal thoracic artery (RITA) crossing in front of the aorta to the left anterior descending artery (LAD). Full sternotomy and aortic dissection result sometimes in graft injury and subsequent myocardial ischemia. The benefit ...
Shimamura Yoshiei - - 2005
This article describes the construction and use of a new end graft holder during coronary artery bypass grafting (CABG). The instrument consists of a pinching device attached to a flexible arm and a fixation clamp. This device provides secure stabilization and enables excellent positioning of the graft without producing graft ...
Chevallier Pascale - - 2005
Arterial prostheses made of microporous Teflon (ePTFE) are currently used in vascular surgery as bypasses for small and medium vessels. However, several clinical complications, such as thrombosis, frequently occur in these prostheses when implanted in humans. In this work, an original strategy was developed to improve the hemocompatibility of ePTFE ...
Arbag Hamdi - - 2005
CONCLUSION: Using a transantral approach, we examined a new bypass of the maxillary artery (MA) to proximal middle cerebral artery (MCA). The caliber of the MA was suitable to provide sufficient blood flow. The length of the graft was shorter and it had a straighter course in the new technique ...
Buxton Brian F - - 2005
BACKGROUND: Coronary artery graft patency results have been obtained from repeat angiograms in patients who presented with evidence of ischemia. The purpose of this study is to compare protocol-directed angiographic results from a randomized clinical trial with symptom-directed angiography in nontrial patients. METHODS: Repeat angiography after primary isolated coronary artery ...
Staffa R - - 2005
BACKGROUND: Pedal bypass grafting is often the only method of limb salvage in patients with chronic critical lower limb ischemia due to atherosclerotic obliteration of the crural arteries, including patients with diabetic foot gangrene. It involves arterial reconstruction with distal anastomosis to one of the pedal arteries. MATERIAL AND METHODS: ...
Salm Liesbeth P - - 2005
BACKGROUND: Coronary angiography is considered the gold standard in evaluating vein graft disease; however, angiography does not allow assessment of hemodynamic consequences of lesions. In this study hemodynamic consequences of significant stenoses in vein grafts were evaluated by Doppler velocity assessment, and results were compared with single photon emission computed ...
Albers Maximiano - - 2005
Several studies have described acceptable results for infrapopliteal bypass surgery that uses an autogenous vein other than the greater saphenous vein but is still no reliable prediction of outcomes. The objective of this study was to use meta-analysis to assess the long-term outcomes after infrapopliteal bypass grafting done with alternate ...
Santoro A - - 2005
Two patients are described, the first with a giant aneurysm of the left carotid bifurcation previously treated by endovascular technique, the second with a bilateral intracavernous aneurysm: both were submitted to high-flow by-pass operation. The first patient was a 40 year-old woman who had presented subarachnoid hemorrhage 6 months before ...
Fields Ryan C - - 2005
Polytetrafluoroethylene (PTFE) arteriovenous (AV) grafts are performed routinely for vascular access. The limited life span of PTFE grafts is a major cause of morbidity. Graft failure is attributed to venous outflow tract vascular smooth muscle (VSM) hyperplasia, which is linked to heterotrimeric G protein signaling. We proposed that expression of ...
Martin Niels D - - 2005
BACKGROUND: We are investigating decellularized vein allograft as a scaffold to engineer a non-synthetic, small-diameter vascular graft. This study examines the in vivo behavior of this scaffolding after implantation into the arterial circulation. MATERIALS AND METHODS: Canine animals underwent bilateral carotid interposition grafting using jugular vein implanted as either: 1) ...
Gaudino Mario - - 2005
BACKGROUND: The purpose of this research was to investigate the in vivo morphofunctional changes induced in the radial artery (RA) by its use as coronary artery bypass conduit by comparing the morphological features and vasoreactivity of the native RA versus the coronary RA graft in the same patient. METHODS AND ...
Glineur David - - 2005
BACKGROUND: The use of both internal thoracic arteries (ITAs) as a Y-graft configuration has been proposed as a technique allowing complete arterial revascularization. Controversy remains, however, about the capacity of this Y-graft configuration to provide sufficient blood flow to the whole left coronary system and about possible steal phenomenon occurring ...
Gaudino Mario - - 2005
BACKGROUND: In patients who develop in-stent restenosis, successful revascularization can be difficult to achieve using percutaneous methods. This study was designed to verify the surgical results in this setting and to evaluate the potential beneficial role of arterial bypass conduits. METHODS AND RESULTS: Sixty consecutive coronary artery bypass patients with ...
Nishida Hiroshi - - 2005
BACKGROUND: The purpose of this study was to evaluate mortality after coronary artery bypass grafting (CABG) comparing the use of only in situ arterial grafts with the use of arterial and venous conduits. METHODS AND RESULTS: From April 1985 to March 1999, 1159 patients with multivessel disease underwent elective, isolated, ...
Chang Yen - - 2005
Chronic rejection of arterial xenografts results in aneurysmal dilation, due to immune mediated processes. To minimize the immunologic degradation of the graft, a cell-extraction process employing sodium dodecyl sulfate (SDS) was used in the study to remove the cellular components in bovine carotid arteries. To further reduce their immunogenicity, the ...
Smeets L - - 2005
OBJECTIVE: To compare the consequences of occlusion of infrainguinal venous and prosthetic grafts. METHODS: In total, 2690 patients were included in the Dutch BOA study, a multicenter randomised trial that compared the effectiveness of oral anticoagulants with aspirin in the prevention of infrainguinal bypass graft occlusion. Two thousand four hundred ...
Klima Uwe - - 2005
Sutureless anastomotic systems promise to minimize surgical trauma during revascularization procedures. We evaluate graft patency following end-to-side coupling with the Converge device. Fifteen of 35 enrolled patients of a two-center, non-randomized clinical study underwent 2-year angiography and clinical follow up, after sutureless anastomotic coupling of one of the grafts, using ...
Dethmers R S M - - 2005
This retrospective study assessed the results of treatment of 29 cases of hypothenar hammer syndrome and two cases of thenar hammer syndrome. Three hands were symptom free, 15 were improved, 11 were unchanged and two were worse at a mean follow-up of 43 (range 4-60) months. Follow-up colour-coded Duplex sonography ...
Setina Marek - - 2005
PURPOSE: Recently, new mechanical anastomotic devices have been developed. Initial results appear to be equivalent to those obtained with suture. The aim of the study was to evaluate the 6-month angiographic patency and clinical results with the St. Jude Medical second-generation aortic connector for proximal aortosaphenous graft anastomosis. DESCRIPTION: From ...
Piers L H - - 2005
This case report describes the use of retrospectively ECG-gated 16-slice multidetector computed tomography (MDCT) and electron-beam tomography (EBT) for assessing bypass graft patency in two patients with recurrent angina after coronary artery bypass graft surgery. The results of each tomographic modality were compared to the findings of traditional coronary angiography. ...
Fukui Toshihiro - - 2005
BACKGROUND: Multiple arterial myocardial revascularizations are increasingly undertaken using off-pump techniques; however, various arterial grafting techniques are utilized. This study aimed to review the outcome of combining arterial composite and sequential grafting with off-pump techniques. METHODS: We retrospectively reviewed the records of 107 consecutive patients who underwent coronary bypass surgery ...
Waniewski Jacek - - 2005
The modified Blalock-Taussig shunt is a palliative operation for some congenital heart diseases. An artificial conduit with antithrombotic surface placed between the subclavian (or innominate) and the pulmonary artery supplies blood to the lungs in defects with decreased pulmonary flow. Clotting of the graft is the main cause of its ...
Kim W G - - 2005
BACKGROUND: We implanted frozen and acellularized porcine xenograft vessels as small-diameter arterial grafts in goats and comparatively analyzed the explanted grafts by gross observation and by light microscopy at predetermined periods. MATERIALS AND METHODS: Porcine carotid arteries were harvested and immediately stored within a tissue preservation solution at -70 degrees ...
LeMaire Scott A - - 2005
BACKGROUND: BioGlue Surgical Adhesive (CryoLife, Inc, Kennesaw, GA) is used to reinforce anastomoses during cardiovascular operations. Previous reports have raised concerns that adhesives may leak through suture-line needle holes and that resulting intraluminal glue may embolize. The purpose of this study was to determine if BioGlue leaks through anastomotic needle ...
Imamaki Mizuho - - 2005
A 74-year-old man with chronic renal failure under hemodialysis via the left upper extremity underwent an off-pump coronary artery bypass (OPCAB). The left internal thoracic artery (LITA), which was harvested in a skeletonized manner, was anastomosed to the left anterior descending artery (LAD). Postoperatively, he complained of chest pain only ...
Giulini Stefano Maria - - 2005
This is a case of aortic pseudoaneurysm due to Salmonella aortitis successfully treated by coaxial double-vein graft replacement (femoral vein and internal jugular vein) associated with hepatic resection for hepatocarcinoma. The aim of the technique is to improve the solidness of the vascular anastomosis and the tensile strength of the ...
Flores Jorge - - 2005
We used a canine model to assess the efficacy of an angiotensin-converting enzyme inhibitor (perindopril) at modulating intimal/medial hyperplasia in vein bypass grafts. Fourteen beagle dogs were divided into medicated and control groups and underwent bilateral grafting of external jugular veins into the common carotid artery. Samples of normal veins ...
Ryu Sang-Wan - - 2005
BACKGROUND: Despite the purported advantages of using a gastroepiploic artery graft during coronary artery bypass, insufficient potential flow capacity and vasospasm remain major concerns. We assessed the efficacy and results of using a skeletonized composite gastroepiploic artery graft in situations in which bilateral internal thoracic and radial arteries could not ...
Frazier Aletta Ann - - 2005
Coronary artery bypass graft (CABG) surgery is the standard of care in the treatment of advanced coronary artery disease. It is well known that the long-term clinical outcome after myocardial revascularization depends on the patency of the bypass grafts. In the past, invasive coronary angiography was used to assess the ...
Arba─č Hamdi - - 2005
OBJECTIVE: This study aims to examine the use of a radial artery graft for bypass of the maxillary artery (MA) to the supraclinoid internal carotid artery (ICA) in treating ICA occlusions. STUDY DESIGN AND SETTING: This method was carried out on five adult cadaver sides. The MA was reached 1-2 ...
Matsuura Kaoru - - 2005
BACKGROUND: This study aimed to elucidate the safety and feasibility of off-pump coronary artery bypass grafting with only arterial grafts for elderly patients. METHODS: Of 653 patients who underwent off-pump coronary artery bypass grafting from April 2000 to December 2003, 581 patients did so with only arterial grafts. The average ...
Daly Chris D - - 2005
Since the introduction of synthetic vascular grafts in the 1960s, only two-stage endothelial cell seeding has demonstrated any significant improvement over conventional vascular grafts, and its benefits have yet to be demonstrated on a large scale. Tissue engineering is a rapidly expanding field with great potential, but efforts to construct ...
Xie Feng - - 2005
The objectives of this study were to determine the effectiveness of lipid-encapsulated microbubbles and ultrasound (US) in recanalizing arteriovenous graft thrombi and the effect that tissue attenuation has on the success rate. A total of 55 thrombotic occlusions were created in four canines. The thrombosed grafts were randomly treated with ...
Akinci Esat - - 2005
Our objective was to compare the results of revascularization by sequential radial artery (RA) grafting with a left anterior descending left internal mammary artery (LIMA)-RA t-composite grafting technique. Patients were grouped as those with proximal anastomoses performed on the ascending aorta (Group A; n = 38), and those with proximal ...
Sajja Lokeswara Rao - - 2005
The use of the radial artery (RA) as a coronary artery bypass graft has assumed a revival and thus a multitude of issues have arisen surrounding the routine and widespread use of this conduit in myocardial revascularization. There has been no uniformity regarding harvest techniques, assessment of the adequacy of ...
Alexander Michael J - - 2005
BACKGROUND: The introduction of endoscopic harvest of saphenous vein grafts (SVGs) for coronary artery bypass procedures over the past few years has reduced the morbidity and enhanced patient satisfaction associated with this procedure. This report introduces the use of the endoscopic SVG harvest for extracranial-intracranial (EC-IC) bypass procedures. METHODS: Endoscopic ...
Gaudino Mario - - 2005
BACKGROUND: No data are available on the different angiographic results and the in vivo vasoreactivity of radial artery (RA) grafts obtained from different parts of the conduit, although it is known that the distal segment of the artery has a more pronounced muscular component. This study was conceived to evaluate ...
Isobe Naoki - - 2005
BACKGROUND: Left internal thoracic artery (LITA) grafts have superior patency to saphenous vein grafts (SVG). Because shear stress augments the release of nitric oxide throughout the LITA endothelium, shear stress and shear rate in coronary artery bypass grafts (CABG) may play an important role in the higher patency, so the ...
Rocha-E-Silva Roberto - - 2005
BACKGROUND: Left internal thoracic artery-to left anterior descending artery grafting has become a fundamental part of coronary artery bypass grafting. This grafting has led to increased use of other arterial conduits, of which the radial artery is most popular. Whether radial grafting can be used in the emergency patient is ...
Del Gaudio Massimo - - 2005
BACKGROUND: In case of anomal hepatic arterial inflow, it can be necessary to perform revascularization of the liver allograft by iliac arterial interposition graft. METHODS: We analyzed retrospectively 613 liver transplants in a 16-yr period. The hepatic artery (HA) graft group (n = 101) consisted of patients with arterial inflow ...
Kasahara Mureo - - 2005
Technical improvements in adult-to-adult living-donor liver transplantation (LDLT) have led to the use of right-lobe grafts to overcome the problems encountered with 'small-for-size grafts'. The major controversy remains that the venous drainage from anterior segment substantially depends on tributaries of the middle hepatic vein (MHV), and deprivation of such tributaries ...
Manchio Jeffrey V - - 2005
BACKGROUND: Saphenous vein graft failure after coronary artery bypass surgery may be as high as 5% to 10% in the first postoperative week. We hypothesized that identifying damage sustained by saphenous vein endothelium before grafting predicts early graft attrition after off-pump coronary artery bypass graft surgery. METHODS: Intraoperative graft flow, ...
Dorgelo J - - 2005
Arterial coronary bypass grafts [internal mammary arteries and gastroepiploic artery (GEA)] are in widespread use for coronary surgery. Since selective catheterisation of the GEA graft to monitor patency, is often unsuccessful, a non-invasive protocol to visualise the GEA-graft from origin to anastomosis is presented using 16-slice multidetector computed tomography (MDCT). ...
Boggi Ugo - - 2005
BACKGROUND: Pancreas transplantation (PTx) with portal-enteric drainage (PED) has been associated with difficulties in respect to arterial anastomosis and graft accessibility for percutaneous biopsy. We describe a new technique that circumvents these difficulties. METHODS: Between April 2001 and April 2004, a total of 113 recipients were scheduled for PTx with ...
Choi Byung-Ho - - 2005
It has been shown that a vein graft provides a good environment for axon regeneration in short nerve gaps. But the use of a vein graft for long nerve gaps is controversial because veins may collapse, due to their thin walls, and the surrounding scar tissue can cause constriction. In ...
Chiurlia Emilio - - 2005
Fifty-two consecutive asymptomatic patients with a total of 166 bypass grafts were investigated by 16-slice computed tomography (CT) 15 +/- 5 days before invasive coronary angiography. Overall, 165 grafts (99.4%) were assessable with multislice CT (MSCT). Coronary angiography showed that 111 grafts (67%) were patent and 54 (33%) were occluded. ...
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