Search Results
Results 301 - 350 of 3015
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Kettering K - - 2008
AIM: Recently minimally invasive direct coronary artery bypass (MIDCAB) grafting has become an interesting alternative to conventional coronary artery bypass grafting, especially in patients with a high-grade left anterior descending coronary artery (LAD) stenosis unsuitable for balloon angioplasty. Although MIDCAB offers several advantages such as the avoidance of sternotomy and ...
Mofidi R - - 2009
BACKGROUND: We sought to evaluate the role of balloon angioplasty as the primary modality in the management of vein graft stenoses. METHODS: Patients who underwent infrainguinal vein graft bypass from January 2002 to December 2007 were enrolled into a surveillance program. Grafts which developed critical stenoses were identified and underwent ...
de Graaf Rick - - 2009
Neointima formation as a result of smooth muscle cell (SMC) proliferation still contributes significantly to venous bypass graft stenosis and failure. The new immunosuppressive agent FK778 has recently been shown to exert anti-proliferative effects. We examined the inhibitory potential of FK778 on venous SMC proliferation and neointima formation in an ...
Kerdjoudj Halima - - 2008
OBJECTIVE: The aim of this study was to evaluate the patency of human umbilical arteries treated with polyelectrolyte multilayers (PEMs) after rabbit implantation. BACKGROUND: The development of small-caliber vascular substitutes with high patency after implantation remains a real challenge for vascular tissue engineering. METHODS: Cryopreserved human umbilical arteries were enzymatically ...
Desai, Nimesh
The ultimate success of bypass surgery depends on the construction of a technically perfect bypass graft to an appropriate coronary vessel using a conduit which will remain durable for the lifetime of the patient. This thesis explores methods to improve coronary surgery by enhancing intraoperative imaging and conduit selection in ...
Mack Michael J - - 2008
PURPOSE OF REVIEW: Intraoperative graft assessment in coronary artery bypass grafting is infrequently performed. Nevertheless, studies show an immediate graft closure rate of 5-9% and a 1-year closure rate of 20-30%. RECENT FINDINGS: Coronary angiography is the 'gold standard' for graft assessment yet has been seldom employed because of logistical ...
Klosek Sebastian Krystian - - 2009
Palate is considered as a tissue graft donor site for dental surgical procedures. Therefore, the aim of this study was to investigate the anatomy of palatal structures, such as greater palatine artery, greater palatine foramen, and incisive fossa, in order to consider their topography at planning the graft dimensions and ...
Tabata Minoru - - 2008
OBJECTIVE: Minimizing surgical access in reoperative cardiac surgery allows limitation of dissection, trauma, and manipulation of patent bypass grafts. We report an 11-year experience with reoperative minimal access aortic valve surgery through an upper hemisternotomy. METHODS: From July 1996 to June 2007 at our institution, 146 patients underwent reoperative minimal ...
Pavcnik Dusan - - 2009
The purpose of this study was to report the longitudinal angiographic evaluation of prefabricated lyophilized small-intestinal submucosa (SIS) grafts placed in ovine carotid arteries and to demonstrate a variety of complications that developed. A total of 24 grafts, 10 cm long and 6 mm in diameter, were placed surgically as ...
Yoshizaki Tomoya - - 2008
The best way to prevent spasm of the radial artery is still under investigation. We retrospectively compared the effectiveness of topical verapamil-nitroglycerin with papaverine in preventing graft spasm in 215 patients who underwent isolated conventional coronary artery bypass using a radial artery. Postoperative angiographic data were successfully collected in 116 ...
Nabuchi Akihiro - - 2008
The multidetector computed tomography (MDCT) scan is now widely used especially to find lesions of the coronary artery stenosis. In this report the images of a postoperative study of coronary artery bypass grafting (CABG) by MDCT are introduced to reveal their feasibility and reliability. Shown is one of the patients ...
Walpoth Beat H - - 2008
OBJECTIVE: Flow mismatch between the supplying artery and the myocardial perfusion region has been observed in patients with internal thoracic artery grafts. Thus coronary flow changes of arterial (internal thoracic artery grafts) and saphenous (saphenous vein grafts) bypass grafts were studied early and late after coronary artery bypass grafting. METHODS: ...
Osaragi Tomohiko - - 2008
The aim of this study was to determine the optimal temperature of graft preservation after ex vivo gene transfer to rat lung isografts. Left lungs were harvested and infused with cationic lipid/LacZ-DNA complex via the pulmonary artery, and the grafts were stored for 4h. The grafts (n7) were allocated into ...
Kimura Satoshi - - 2008
BACKGROUND: Clinical outcome of surgical revascularization using autologous vein graft is limited by vein graft failure attributable to neointima formation. Platelet-derived growth factor (PDGF) plays a central role in the pathogenesis of vein graft failure. Therefore, we hypothesized that nanoparticle (NP)-mediated drug delivery system of PDGF-receptor (PDGF-R) tyrosine kinase inhibitor ...
Sabik Joseph F JF - - 2008
BACKGROUND: We sought to determine whether location of the second internal thoracic artery (ITA) graft used for bilateral ITA grafting affects mortality and morbidity of patients with 3-system coronary artery disease and to identify factors associated with second ITA location. METHODS AND RESULTS: From January 1972 to June 2006, 3611 ...
Singh Steve K - - 2008
BACKGROUND: Despite worse outcomes in diabetics after coronary artery bypass grafting surgery, studies have not examined graft patency in this high-risk group. This study examined the impact of diabetes on graft patency, 1-year postcoronary artery bypass grafting, using data from a multicenter randomized trial. METHODS AND RESULTS: The Radial Artery ...
Arenz C - - 2008
BACKGROUND: Can Contegra grafts withstand high pressure? METHODS: The function of Contegra grafts implanted after unifocalization of major aortopulmonary collateral arteries (MAPCAs) in 10 patients was evaluated. Median age at repair was 194 days and two conduit sizes were used: 12 mm (n = 8) and 14 mm (n = ...
Siani Andrea - - 2009
Proximal disruption of an axillofemoral bypass is a catastrophic event rarely caused by a posttraumatic anterior dislocation of the shoulder. Herein, we present a 74-year-old man with a painful dislocation of the right shoulder that was successfully reduced. Three hours later he had hemodynamic shock with an expanding and pulsating ...
Hata Hiroki - - 2009
Graft replacement of an inflammatory abdominal aortic aneurysm is rather troublesome due to the marked adhesion to surrounding organs and thickened wall, which is mostly too hard and inflexible to allow the artery to be fitted to a prosthetic graft. For one such case, we developed a novel and unique ...
Kamei Yuzuru - - 2008
Free flaps are used increasingly in reconstructive surgery. However, many patients lack a satisfactory recipient vessel near the defect because of radiotherapy, post-traumatic infection, or treatment for recurrent tumor. We usually use a venous graft in such cases, but when both long arterial and venous segments are needed, we use ...
Brown Morgan L - - 2008
OBJECTIVE: Patients who have undergone prior mediastinal radiation might require coronary artery bypass grafting. However, there is some concern regarding potential radiation damage to the internal thoracic artery. Our objective was to assess the late patency of the internal thoracic artery and venous grafts in patients with prior mediastinal radiation. ...
Gulkarov Iosif - - 2009
In patients who require lower extremity revascularization, prosthetic graft is a reasonable alternative in the absence of a suitable autologous vein conduit. However, prosthetic bypass grafts have limited patency, especially for infrageniculate reconstruction. Polytetrafluoroethylene grafts were geometrically modified at the distal end to increase their patency. The authors reviewed their ...
Niyyar Vandana Dua - - 2008
Vascular access dysfunction is a major cause of morbidity in hemodialysis (HD) patients and the maintenance of a functional vascular access is an ongoing challenge. An upper extremity autogenous arteriovenous fistula (AVF) that preferentially involves the cephalic vein is the access of choice for hemodialysis patients, followed by autogenous AVF ...
Kóbori László - - 2008
Vascular complications are major causes of graft failure in liver transplantation. The use of different vascular grafts is common but the results are controversial. The aim of this study was to create an 'ideal' arterial interponate for vascular replacements in the clinical field. An autologous, tubular graft prepared from the ...
Onorati Francesco - - 2008
Extensive arterial grafting (Art-CABG) in the elderly is still questioned due to the reduced life expectancy and the supposed higher periprocedural risk. Reports further demonstrated accelerated atherosclerosis of arterial grafts in the elderly, with hampered short-term and long-term results. We reviewed our experience of patients undergoing Art-CABG between January 2003 ...
LeBlanc Robby - - 2008
We report a case of digital revascularization in a child's small finger by using a digital artery from the adjacent uninjured digit. Reconstruction of a defect in the digital artery with a vein graft is technically challenging in a child and has a higher risk of failure due to anastomoses ...
Tamazashvili Tamaz - - 2008
BACKGROUND: Infection of the prosthetic aortic graft bypass remains one of the most serious complications of aortoiliac bypass grafts. Use of an aortoiliac allograft as a replacement for an infected prosthetic graft is an effective treatment for this problem. However, the availability of aortoiliac grafts is affected by the high ...
Hoffer Eric K - - 2008
Massive hemorrhage related to pelvic trauma is relatively rare, but when it occurs rapid triage to therapeutic intervention is essential for survival. Traditional surgical repairs had limited success. Anatomic and clinical studies indicate that arterial hemorrhage is often identified in patients with hemodynamic instability that do not respond to initial ...
Kilian Eckehard Gerd - - 2008
BACKGROUND: Stenoses of venous grafts represent a major limitation in coronary artery bypass surgery. The use of viral vectors to facilitate over-expression of factors within the graft to promote long-term patency is a promising new therapeutic concept. One of the viral vector systems is the adeno-associated virus (AAV); a non-pathogenic ...
Kawamura Masashi - - 2008
OBJECTIVE: In coronary artery bypass grafting (CABG), insufficient bypass flow can be a cause of occlusion or string sign of the internal thoracic artery (ITA) graft. A patent saphenous vein (SV) graft from the ascending aorta can reduce the blood flow through the ITA graft, and may affect its long-term ...
Matsushita M - - 2008
AIM: We studied whether the diameter of the saphenous vein graft affects the result of femoro-popliteal bypass surgery. METHODS: Thirty-eight patients with bypasses from the femoral artery to the above knee popliteal artery were studied. Bypasses without a patent anterior or posterior tibial artery were excluded. The great saphenous vein ...
Hassantash Seyed-Ahmad - - 2008
Aortocoronary saphenous vein bypass grafting relieves anginal pain in patients with coronary artery disease. However, its effectiveness is limited due to graft failure; the 10-year patency rate is 50%-60%. Early, 1-year and late graft failure may be due to thrombosis, fibrointimal hyperplasia and atherosclerosis, respectively. There is general agreement that ...
Zhang Liangshun - - 2008
Influence of molecular architecture on phase behavior of graft copolymer melts was studied by using a reciprocal-space self-consistent filed theory (SCFT). The phase diagrams were examined as functions of the architectural parameters describing the graft copolymers (i.e., the number of grafts and the position of first junction). In comparison with ...
Tinder Chelsey N - - 2008
Controversy regarding the efficacy of duplex ultrasound surveillance after infrainguinal vein bypass led to an analysis of patient and bypass graft characteristics predictive for development of graft stenosis and a decision of secondary intervention. Retrospective analysis of a contemporary, consecutive series of 353 clinically successful infrainguinal vein bypasses performed in ...
Mofidi R - - 2009
We assessed the impact of preoperative diameter of the venous conduit on reintervention rate and outcome following infrainguinal vein graft bypass. Consecutive infrainguinal vein bypasses between January 2001 and December 2006 were reviewed. All patients underwent preoperative measurement of vein graft diameter (VGD). Grafts were classified into those with VGD ...
Zilla Peter - - 2008
OBJECTIVE: External mesh support of vein grafts has been shown to mitigate the formation of intimal hyperplasia. The aim of the present study was to address the issue of optimal mesh size in a nonhuman primate model that mimics the dimensional mismatch typically encountered between clinical vein grafts and their ...
Kakkos S K - - 2008
BACKGROUND: To study the long-term patency of thrombosed prosthetic vascular access grafts treated with percutaneous mechanical thrombectomy (PMT) followed by aggressive surveillance and monitoring and repeated endovascular interventions. STUDY DESIGN: Two hundred seven vascular access grafts presented with first-time thrombosis were treated with PMT using the AngioJet device (n=185) or ...
Torikai Kei - - 2008
OBJECTIVE: Various tissue-engineered vascular grafts have been studied to overcome the clinical disadvantages of conventional prostheses. Previous tissue-engineered vascular grafts have generally required preoperative cellular manipulation or use of bioreactors to improve performance, and their mechanical properties have been insufficient. We focused on the concept of in situ cellularization and ...
Kolvenbach Ralf - - 2008
Graft migration and other device-related problems are more frequent in abdominal aortic aneurysm (AAA) patients with a complicated neck. We wanted to evaluate the performance of a balloon-expandable stent graft in these cases. Complicated aortic neck morphology was defined as a combination of short (<15 mm) and angulated (>45 degrees) ...
Yazici Ilker - - 2008
INTRODUCTION: The aim of this study is to present an anatomic study and a dissection technique to prepare maxilla graft for transplantation. METHODS: Six fixed adult human cadavers were used for dissection of the maxilla grafts. Retrospective reviews of archives of 10 MRI and 5 angiographies of the maxillary region ...
Gargiulo Nicholas J NJ - - 2008
Prosthetic graft seromas is a rare complication that has been traditionally managed with open methods using partial graft replacement and open drainage. We report the first two cases of hemodialysis graft seromas successfully treated with a covered stent. Both patients underwent arteriovenous graft placement from the brachial artery to the ...
Sasaki Hideki - - 2008
The right gastroepiploic artery (RGEA) has been used as a conduit in coronary artery bypass grafting. Although some reports presenting good results justify its use in clinical settings, there is still much concern about using the RGEA in bypass surgery. The RGEA demonstrates different behaviors from the internal thoracic artery ...
Okutan Huseyin - - 2008
An innovative arterial and venous graft holder has been developed for use during proximal and distal anastomosis in coronary artery bypass grafting. The device consists of a flexible arm and a handle. The handle in turn is composed of three parts: (1) a T-shaped body, (2) an atraumatic clip for ...
Imamaki Mizuho - - 2008
BACKGROUND: It remains controversial whether right internal thoracic artery (RITA) to left anterior descending artery (LAD) bypass has qualitative limitations which cannot be evaluated based on the patency rate alone. METHODS: The 111 subjects underwent graft angiography after bypass grafting of the left or right internal thoracic artery (ITA) to ...
G?rhan Ulusoy M - - 2009
This paper presents the details of an experimental study of arterial anastomosis, combining suture with the cyanoacrylate tissue adhesive. At the distal end of the vessel, two parallel incisions were made, 180 degrees apart from each other, and two sutures were placed passing from the proximal end to exit from ...
Wusirika Raghav - - 2008
We report a case of occlusion of a graft related to residual thrombus collection at the inflow in a blind pouch formed by conversion of a previous brachial cephalic fistula to a graft. The thrombus was unable to be dislodged by conventional methods with the use of a Fogarty balloon ...
Toda Koichi - - 2008
We developed a simple and secure technique for reimplantation of the intercostal arteries (ICAs) using a patch graft during thoracoabdominal aneurysm repair. With our procedure, a sidearm branch with its base is tailored from a 24 mm one-branch Dacron graft, and then sutured as a patch graft to the trimmed ...
Kobayashi Toshiro - - 2008
OBJECTIVE: The right gastroepiploic artery (RGEA) is widely used as an in situ arterial graft for coronary artery bypass grafting (CABG); however, it is impossible to measure an RGEA or check for calcification or stenosis and assess its suitability as a graft before angiography or harvest. We evaluated the accuracy ...
Jones Catherine M - - 2008
Recurrent cardiac ischemia after coronary artery bypass graft surgery occurs in a significant proportion of patients, prompting repeat investigations and incurring significant clinical and financial costs. Noninvasive investigations to identify graft occlusion and quantify graft stenosis are desirable due to the complications, cost, and patient inconvenience of invasive coronary angiography. ...
Zhu L - - 2008
Our goal was to establish a simple and stable cervical heterotopic small intestinal transplantation (SIT) rat model that minimizes mortality. METHODS: The graft was removed en bloc consisting of small intestine, portal vein (PV), and donor superior mesenteric artery. The graft was perfused in situ and the gut lumen irrigated ...
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