Search Results
Results 401 - 450 of 3015
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Yuan Shi-Min - - 2008
The aim of this review is to present the configurations and classifications of composite arterial grafts in coronary bypass surgery. Articles were collected by tracking references cited in the literature with regard to the configurations of composite arterial grafts in coronary bypass surgery. Figures of the configurations were drawn in ...
Inoue Yoshinori - - 2008
PURPOSE: To evaluate the patency and limb-salvage rates associated with cuffed anastomosis in above-knee femoropopliteal (FP) bypasses using prosthetic grafts. METHODS: Between January 1997 and December 2005, 96 patients (99 limbs) underwent above-knee FP bypass grafting for peripheral vascular disease, with disabling claudication in 81%. All grafts were 6-mm, thin-walled, ...
Uva Miguel Sousa - - 2008
OBJECTIVE: To investigate the ability of 16-slice multidetector computed tomography (MDCT) to assess coronary artery bypass graft patency and to detect bypass stenosis by comparison with coronary angiography. METHODS: Thirty patients underwent both conventional coronary bypass angiography and retrospective ECG gated 16-slice multidetector computed tomography after surgery using 0.4 seconds ...
Wu Meng-Yu - - 2008
Severe atherosclerosis of the distal ascending aorta increases the risk of intraoperative stroke during coronary artery bypass. More than one in situ arterial graft is required to avoid aortic manipulation during proximal anastomosis. The application of bilateral internal thoracic arteries is a good choice, but it also carries the risk ...
Masetti Paolo - - 2008
A technique is presented for treatment of annular erosion using a polyester tube graft that is sutured to the left ventricular outflow tract below the area of erosion. The graft is then everted and sutured to a composite graft. Interposition polyester grafts from the coronary arteries are attached to the ...
Kwak Jae Gun - - 2008
A 34 months-old male patient with double inlet right ventricle with nonconfluent pulmonary arteries who underwent successful extracardiac fenestarated Fontan procedure using pre-designed T-shaped PTFE vascular graft after multi-step rehabilitation of the diminutive hilar pulmonary arteries. At first we performed 6 mm confluent pulmonary artery vascular graft implantation with 4 ...
Cheung Alfred K AK Veterans Affair Salt Lake City Healthcare System, Salt Lake City, Utah, USA. - - 2008
A well-functioning vascular access is essential for hemodialysis in end-stage kidney disease patients. Synthetic grafts are more prone to the development of stenosis than native fistulas. Most of the stenosis is caused by neointimal hyperplasia localized at the outflow tract, which is perpetuated by continuous stimuli, such as blood flow ...
Kakkos Stavros K - - 2008
The 2006 update of the DOQI guidelines has stated that in patients with end-stage renal disease, autogenous radial-cephalic, or brachial-cephalic fistulas are the preferred access modalities, followed by transposed brachial-basilic (TBB) fistulas and prosthetic arteriovenous (AV) grafts. AV grafts are in general least preferred; however, there is very limited data ...
Englberger Lars - - 2008
BACKGROUND: Increasing age and comorbidities among patients undergoing coronary artery bypass surgery (CABG) stimulates the exhaustive research for alternative grafts. No-React treatment should render the tissue resistant against degeneration and reduce early inflammatory response. The aim of the present study was an invasive assessment of the patency of No-React bovine ...
Kloppenburg, Geoffrey TL
Abstract Background Along with angioplasty, autologus vein grafts are commonly used for artery bypass grafting in patients with advanced arterial stenosis and drug-resistant angina pectoris. Although initially a successful procedure, long-term functionality is limited due to proliferation and migration of smooth muscle cells. Like in atherosclerosis, common chronic infections caused ...
Tabata Shigeki - - 2007
We performed a minimally invasive direct coronary artery bypass (MIDCAB) on two patients for third-time revascularization. The first patient was a 66-year-old woman who had patent bilateral internal thoracic artery (ITA) grafts and an occluded radial artery (RA) graft anastomosed to the posterolateral (PL) branch. She underwent her third revascularization ...
Rocha-e-Silva Roberto - - 2007
BACKGROUND: Left internal thoracic artery to left anterior descending artery (LITA-LADA) grafting has become a fundamental part of the coronary artery bypass graft procedure (CABG). This grafting in turn has led to an increased use of other arterial conduits, of which the radial artery (RA) is most popular. Whether RA ...
Ohtake Hiroshi - - 2007
PURPOSE: To report a case of stent-graft implantation for a perigraft seroma that formed after descending thoracic aortic surgery. CASE REPORT: A 70-year-old woman presented with a perigraft seroma after a descending thoracic aortic surgery 10 years ago in which a polytetrafluoroethylene graft was used. Chest radiography and computed tomography ...
Tracy C Alan - - 2007
Vascularized bone grafts have been successfully used in the treatment of carpal bone nonunion and avascular necrosis. The 4 + 5 extensor compartmental vascularized bone graft based on the fourth extensor compartment artery with retrograde blood flow through the fifth extensor compartment artery is the pedicle of choice for vascularized ...
Tokuda Yoshiyuki - - 2007
BACKGROUND: A primary limitation of using transit time flow measurement to predict early graft failure in coronary artery bypass grafting has been the lack of cutoff values for objective criteria. METHODS: We analyzed a total of 261 grafts that were evaluated by intraoperative transit time flow measurement and underwent early ...
Bandyk Dennis F - - 2007
The elements of a surveillance program after lower limb bypass grafting to enhance graft patency continue to evolve. Graft evaluation should include clinical assessment for new or changes in limb ischemia symptoms, measurement of ankle or toe systolic pressure, or both, and duplex ultrasound imaging of the bypass graft, which ...
Chimenti Cristina - - 2007
Coronary artery bypass grafting was performed in a 54-year-old man affected by untreated Fabry's disease. Left internal mammary artery (LIMA) and saphenous vein grafts were implanted. Surgical samples of LIMA revealed diffuse glycosphyngolipid infiltration of smooth muscle cells, whereas SV was normal. After surgery, the patient received antithrombotic and enzyme ...
Pillai J - - 2008
OBJECTIVES: The aim of this study was to determine whether the collar graft (standard dacron graft with a customized flexible collar attached to the proximal rim) decreased anastomotic bleeding and the overall clamp time. DESIGN: Prospective randomised single center study. METHODS: Between November 2003 and January 2006, 21 patients were ...
Fukui Shinya - - 2007
OBJECTIVE: The internal thoracic artery remodels its diameter in response to flow requirements. The purpose of this study was to elucidate the remodeling of the radial artery as a composite straight graft with the internal thoracic artery. METHODS: We studied 39 patients who underwent coronary artery bypass grafting. Nineteen patients ...
Desai Nimesh D - - 2007
PURPOSE OF REVIEW: Multiple arterial grafting has been proposed to improve outcomes after coronary bypass surgery. We sought to define the emerging role of the radial artery as an alternative second arterial graft. RECENT FINDINGS: Despite significant evidence suggesting superiority of bilateral internal thoracic artery grafting, utilization in current clinical ...
Iwahashi Hidehiko - - 2007
BACKGROUND: We evaluated the effectiveness of a new thermal coronary angiogram system using intraoperative imaging with an infrared camera for coronary artery bypass grafting. METHODS: The thermal coronary angiograms of 51 patients who underwent a total of 107 coronary artery bypass grafts were evaluated. Thermal coronary angiograms were obtained after ...
Kakani Nirmal - - 2007
The technique of subintimal angioplasty has been described for the recanalisation of native vessels after occlusion of infrainguinal vascular bypass grafts. We report a case in which an attempt at such treatment resulted in inadvertent but successful recanalisation of the occluded vein graft instead. This was complicated by graft perforation ...
Oncel D - - 2007
BACKGROUND: A noninvasive imaging modality is desirable for the evaluation of coronary bypass graft stenosis and occlusion. PURPOSE: To prospectively evaluate the effectiveness of 64-detector-row computed tomography (DCT) for the assessment of coronary bypass grafts. MATERIAL AND METHODS: Forty-two patients (35 male, seven female, mean age 66.3 years) with 103 ...
Carter A - - 2007
Graft surveillance aims to identify those grafts that are at risk of failure as intervention in a patent but failing graft results in improved long-term patency and limb salvage rates compared to rescue of an occluded graft. Controversy exists as to which types of graft benefit the most from surveillance ...
Nishibe Toshiya - - 2007
Autogenous vein and arterial grafts, such as great saphenous veins and internal mammary and radial arteries, remain the gold standard conduits for vascular reconstruction. Expanded polytetrafluoroethylene (PTFE) grafts, which exhibit little inflammatory and thrombogenic reactivity, are the most commonly used material of choice for small diameter vascular grafts when autogenous ...
Onorati Francesco - - 2007
OBJECTIVE: Extensive arterial grafting with the radial artery in elderly patients is still debated, because of the reduced life expectancy and the supposedly higher periprocedural morbidity caused by an accelerated atherosclerosis of arterial grafts in elderly patients, which might hamper functional results. METHODS: We reviewed our experience with patients undergoing ...
Stauder N I - - 2007
This study evaluated graft patency and flow at rest/stress in patients with coronary artery bypass grafts using MR flow measurements and MR angiography (MRA). 45 symptomatic patients with 86 grafts (46 arterial, 40 venous) were examined 5.5 years after surgery. MRA was used to assess bypass patency. Flow measurements were ...
Tsuda Etsuko - - 2008
We report the postoperative course of native and graft flow after coronary artery bypass grafting (CABG) in two patients with giant aneurysms and localized stenosis due to Kawasaki disease (KD). Although both patients had undergone CABG to the left anterior descending artery (LAD) with the left internal thoracic artery (ITA), ...
Fujita Hiromine - - 2008
BACKGROUND: The autologous saphenous vein graft is currently the most suitable conduit for arterial bypass of the lower limbs. Various approaches have been attempted to control vein graft intimal hyperplasia, and several recent reports have suggested that statin use may be linked to improved patency of vein grafts. In this ...
Gansera B - - 2007
BACKGROUND: The evidence respecting the superior patency of ITA-grafts compared to SVG is conclusive. This study evaluates the angiographic findings in 1,189 symptomatic patients who received either one or both ITA-grafts with or without additional SVG. METHODS: 1,189 patients (975 males, aged 62.4 +/- 9.1 years), operated between 2/93 and ...
Shrestha Malakh - - 2007
The safety of total arterial revascularization with a left internal thoracic artery-radial artery T-graft was evaluated in patients with at least two-vessel coronary artery disease and aortic valve stenosis requiring concomitant aortic valve replacement. From June 2001 to January 2005, 18 patients underwent aortic valve replacement and total arterial revascularization, ...
Shimamura Yoshiei - - 2007
OBJECTIVE: We assessed the feasibility and effectiveness of a novel end graft holder for coronary artery bypass grafting (CABG) and evaluated anastomotic patency and early clinical results. METHODS: The end graft holder was applied to 45 consecutive patients. Operative characteristics were off-pump CABG in 22.2%, emergency in 28.9%, and concomitant ...
Kadohama T - - 2007
AIM: We previously reported intercostal duplex scanning ultrasonography to be a reliable technique for the evaluation of the internal thoracic artery (ITA). The purpose of this study was to determine the flow characteristics of the ITA graft using this technique. METHODS: We evaluated the flow characteristics of 69 ITA grafts ...
Suma Hisayoshi - - 2007
BACKGROUND: To improve the long-term results of coronary artery bypass grafting (CABG), several arterial conduits have been used, including the skeletonized right gastroepiploic artery (GEA) graft. METHODS AND RESULTS: The skeletonized GEA graft was used for CABG in 223 patients over a 6-year period (208 males, 15 females, mean age ...
Namdari Surena - - 2007
Although vein bypass grafting in lower extremity and heart tissue ischemia is well documented, little information exists with regard to its selective use for digital ischemia in the hand. Resection and ligation and interposition grafting are most commonly performed to treat digital ischemia and have received the most attention in ...
Cooley Brian C - - 2007
BACKGROUND: Neointimal development is seen clinically after both vein grafting and balloon catheterization, but may not represent the same pathology under these 2 conditions. This study compared the degree of neointimal hyperplasia after vein grafting or arterial-injury grafts in 2 strains of mice: C57Bl/6 and FVB. METHODS AND RESULTS: Jugular ...
Etz Christian D - - 2007
BACKGROUND: The tendency of Dacron vascular grafts to expand after placement in the ascending and descending thoracic aorta has been noted, but never described in detail. METHODS: From 1986 to 2005, two or more computed tomography studies were obtained as part of routine postoperative surveillance in patients with Dacron grafts ...
Marano Riccardo - - 2007
Multi-detector row CT (MDCT) scanners with high spatial and temporal resolutions are now available and are increasingly used for non-invasive assessment of vascular disease, including coronary arteries and coronary artery bypass grafts (CABG). Follow-up of patients who have previously undergone surgical revascularization for coronary artery disease is nowadays one of ...
Suma Hisayoshi - - 2007
BACKGROUND: To improve the longterm outcome after CABG, several strategies have been used using arterial conduits. Our 20 years experience with the right gastroepiploic artery (GEA) graft was evaluated. METHODS AND RESULTS: In 1352 patients having CABG with the GEA graft, (1092 men, mean 63 years, 99% multivessel disease, and ...
Nakajima Hiroyuki - - 2007
OBJECTIVE: Graft flow is one of the important determinants of the arterial graft patency. To establish the optimal graft design, we examined detailed characteristics of the arterial composite and sequential grafts, and sought to delineate the risk factors of graft occlusion due to insufficient bypass flow. METHODS: Angiograms of 2547 ...
Hol Per Kristian - - 2007
BACKGROUND: Intraoperative quality assessment in coronary artery bypass surgery confirms graft patency and enables revision of failing grafts. The aim of this study was to evaluate graft quality intraoperatively by epicardial ultrasonography and to compare this technique with transit time flow measurements and intraoperative angiography, and to evaluate the ability ...
O'Brien T P - - 2007
Disturbed flow patterns, material mismatch, and surgical injury are often cited as being significant contributors to failure at the distal end of femoropopliteal bypass grafts. The objective of this research is to propose a novel bypass graft design concept which seeks to reduce the incidence of disturbed flow in the ...
Exarhos Demetrios N - - 2007
INTRODUCTION: The purpose of this study was to evaluate the patency of coronary artery bypass grafts (CABGs) while assessing the capabilities and limitations of 16-slice multidetector computed tomography. METHODS: We studied retrospectively 19 patients (13 men, 6 women), over an 18-month period. All patients had undergone CABG surgery 3 months ...
Onuma Yoshinobu - - 2007
BACKGROUND: The conventional use of 16-slice multidetector computed tomography (MDCT) remains somewhat limited for evaluating stenoses in vein graft distal anastomotic sites and in coronary arteries. We investigated the diagnostic accuracy of 64-slice MDCT for assessment of both grafts and coronary arteries in patients with coronary artery bypass grafts. METHOD: ...
Feuchtner Gudrun M - - 2007
OBJECTIVE: The purpose of this study was to compare the diagnostic accuracy of 64-slice CT with that of invasive angiography in the detection of greater than 50% graft stenosis within 2 weeks of coronary artery bypass grafting and to investigate the clinical value of 64-slice CT. SUBJECTS AND METHODS: Forty-one ...
Bleiziffer Sabine - - 2007
OBJECTIVES: To improve patients' acceptance of the radial artery as a graft for coronary revascularization, we introduced an endoscopic harvesting technique. The aim of this study was to assess graft quality 1 year after the operation. METHODS: In 50 patients who underwent endoscopic radial artery harvesting for coronary artery bypass ...
Shrestha M - - 2007
OBJECTIVE: To confirm the quality of total arterial CABG carried out using the left internal thoracic artery (LITA) and a radial artery (RA) T-graft and distal anastomoses immediately in the OR, we developed a new technique using intraoperative graft angiography. METHODS: A 5-Fr sheath is inserted in the proximal radial ...
Hayward Philip A R - - 2007
BACKGROUND: The Radial Artery Patency and Clinical Outcomes (RAPCO) study has enrolled patients into two trials to compare the radial artery with the free right internal thoracic artery (if age <70 years) or with saphenous vein (if age >70 years) when grafted onto the largest target other than the left ...
Kapadia Muneera R - - 2008
BACKGROUND: Late failure of prosthetic vascular bypass grafting using expanded polytetrafluoroethylene (ePTFE) is secondary to the development of neointimal hyperplasia, most commonly at the distal anastomosis. To develop therapies that can improve upon current prosthetic vascular bypass grafting, a large animal model of prosthetic bypass grafting that results in reproducible ...
Francisca Kartono; Western University ...
We report a case of large aortic and femoral thrombi causing bilateral lower extremity arterial insufficiency in a protein C deficient patient. After aorto-bifemoral bypass graft, the patient developed graft occlusion within 3-years despite long-term anticoagulation, though there were minimal periods of non-compliance. Protein C and/or S deficiencies are most ...
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