Search Results
Results 451 - 500 of 1034
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Shabb B - - 1999
The left internal mammary artery (LIMA) is the arterial conduit of choice for minimally invasive coronary bypass to the left anterior descending (LAD). However, in redo cases when the LIMA is not available, the use of a saphenous vein graft as an extra-anatomic bypass from the axillary artery to the ...
M C G - - 1999
Study was performed on 83 great and 64 small saphenous veins obtained from human adults males and females, aged 26 to 85 years. The number of valves in the great saphenous veins varies from 3 to l3, and in the small saphenous veins the number of valves varies from 1 ...
D'Andrea V - - 1999
The Authors describe the interposition vein cuff technique as an adjuvant method to infrainguinal prosthetic bypass grafts. The haemodynamic, mechanical and humoral factors thought to be involved in the beneficial effects of the vein cuff are herein discussed. The results of the main series suggest the use of this method ...
Hisatomi K - - 1999
We report the application of a manifold system which is attached to saphenous vein grafts after the completion of distal coronary anastomosis. This technique permits not only the direct delivery of cardioplegic solution into the distal coronary artery, but also the reperfusion of revascularized coronary arteries via saphenous vein grafts ...
Nakajima H H Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, Tokyo, - - 1999
The arteries adjacent to the lesser saphenous vein and sural nerve were investigated in 10 fresh cadavers that had been systemically injected with a lead oxide-gelatin mixture. The accompanying arteries were found to lie along the lesser saphenous vein and sural nerve and to nourish the skin through venocutaneous and ...
Mannion J D - - 1998
BACKGROUND: Treatment of saphenous veins with c-myc antisense oligomers during preparation for grafting reduces medial cellular proliferation and macrophage infiltration, and preserves medial smooth muscle content at 3 days. Accordingly, the purpose of this study was to examine whether c-myc antisense oligomers have an impact on late vein graft remodeling. ...
Fischell T A - - 1998
Slow or no reflow is a serious problem complicating catheter-based revascularization of degenerated saphenous vein bypass grafts. We examined the efficacy of rapidly delivered, high-velocity injections of intracoronary adenosine to reverse 11 slow-flow events complicating stenting of diseased bypass grafts. Ten of 11 events were rapidly improved to TIMI 3 ...
Li J Y - - 1998
Saphenous vein grafts for coronary artery bypass can be harvested by means of the traditional long incision method, the skin bridge method, or a newly developed endoscopic technique. We applied the endoscopic technique to reduce the length of leg incision and to decrease the frequency of complications. Between September and ...
Tran H M - - 1998
BACKGROUND: The tunnelling as opposed to the open harvest technique for harvesting long saphenous vein for coronary artery bypass procedures is a less frequently used technique as it requires more handling of the vein and this may induce trauma. This study aims to compare the degree of endothelial denudation and ...
Albäck A - - 1998
OBJECTIVE: To evaluate the cause of immediate occlusions (those occurring during the first month postoperatively) of infrainguinal reconstruction using in situ saphenous vein. DESIGN: Retrospective clinical study. SETTING: University hospital, Finland. SUBJECTS: 329 in situ saphenous vein bypasses done during the period 1988-1995. MAIN OUTCOME MEASURES: Immediate result, and causes ...
Ramsheyi A - - 1998
We report 3 cases of iatrogenic arterial injuries in relation to saphenous vein stripping. In 2 cases the patients sustained acute severe ischemia and required prompt revascularization. The third patient was seen at a later stage with chronic ischemia and claudication. All 3 patients had their limbs salvaged without severe ...
Morita A - - 1998
Protection of the vein of Labbé is a significant concern during surgery that involves retraction of the temporal lobe. A cranial base surgical approach, especially one via the presigmoid-petrosal route, carries considerable risk to this venous complex. A case is presented in which a large dominant vein of Labbé was ...
White H L - - 1998
Saphenous vein graft disease is an increasing problem as more patients undergo bypass grafting and to date the most effective management strategy remains undefined. The major limitations of angioplasty for saphenous vein graft lesions are the risk of distal embolization and restenosis. Primary stenting in this situation results in superior ...
Morris R J - - 1998
BACKGROUND: Minimally invasive techniques to harvest the saphenous vein for coronary artery bypass grafting continue to improve and evolve. Smaller cutaneous incisions have been shown to decrease postoperative discomfort and improve healing. We describe a technique involving carbon dioxide insufflation and endoscopic dissection to allow easier and atraumatic dissection. METHODS: ...
Nataf P - - 1998
BACKGROUND: A mechanical system for facilitating vascular anastomosis (end-to-side, end-to-end) is described that enables the rapid construction of nonpenetrated, compliant junctions. The instrument (United States Surgical One-Shot system) simultaneously applies either 10 or 12 nonpenetrating, arcuate-legged titanium clips to everted vessel or prosthetic conduit edges. METHODS AND RESULTS: The instrument ...
Moor E - - 1998
The factor V (Arg506-->Gln) mutation confers an increased risk of deep vein thrombosis, whereas its role in saphenous vein graft closure after coronary artery bypass grafting (CABG) remains unclear. This study examined the anticoagulant response to activated protein C (APC ratio) in relation to the surgical trauma and the significance ...
Kopelman D - - 1998
The possibility of ischaemic limb salvage by arterializing the superficial venous system was examined in a canine study. The experiment was carried out on four healthy dogs in three stages. In the first stage, collateral circulation to the hind limb was abolished. In the second stage, all branches of the ...
Salas E - - 1998
OBJECTIVE: To investigate platelet activation and deposition in human saphenous vein and internal mammary artery grafts following coronary artery bypass in vitro and in vivo, as well as inhibition of activation by the platelet selective nitric oxide donor S-nitrosoglutathione (GSNO). DESIGN: Controlled in vitro and in vivo studies. SETTING: Tertiary ...
Zamboni P - - 1998
Venous compliance reflects the mechanical properties of the vein wall. Clinical methods of measurement have not been validated by comparison with the accepted in vitro measurement. Despite this, clinical assessment of vein compliance may have a series of useful applications: (1) to assess the progression of chronic venous insufficiency and ...
Fokin A - - 1998
The authors present an alternative technique for anastomosis of the proximal saphenous vein to the ascending aorta which allows safe and effective performance of the aorto-to-saphenous connection using neither aortic clamping nor circulatory arrest. This technique can be used in situations such as calcification of the aortic wall or presence ...
Rijkenhuizen A B - - 1998
A surgical technique is described in which a saphenous vein graft is used to reconstruct the jugular vein in horses with facial oedema due to post thrombophlebitic stenosis of the jugular vein. The saphenous vein was harvested from the contralateral limb and implanted in the occluded vein by 2 side-to-end ...
Pearson P J - - 1998
BACKGROUND: Greater release of endothelium-derived nitric oxide is implicated in the superior patency of the internal mammary artery (IMA) used in coronary artery bypass grafting. This study compared the release of endothelium-derived nitric oxide into the lumen of the IMA and the saphenous vein under normoxic versus hypoxic conditions. METHODS: ...
Le Breton H - - 1998
Aneurysms of saphenous vein grafts to coronary arteries are unusual complications of coronary artery bypass graft (CABG) surgery. Three patients (men aged 47, 62, and 68 years) are presented with spontaneous chest pains 10, 21, and 17 years after CABG surgery. In one case, the saphenous vein graft had eroded ...
Igarashi Y - - 1998
A 63-year-old man with left main coronary artery disease underwent aortocoronary bypass surgery using saphenous vein grafts. Less than 1 month later, severe narrowing occurred in the mid-portion of the vein graft to the left anterior descending coronary artery. Preintervention intravascular ultrasonography revealed prominent vein graft shrinkage. Percutaneous transluminal angioplasty ...
Jakobsen H L - - 1998
OBJECTIVES: To determine the value of PTFE grafts with a distal vein cuff as a conduit for below-knee (BK) popliteal and distal bypass in the absence of autologous vein. DESIGN: Retrospective study. MATERIALS AND METHODS: Forty below BK popliteal and distal bypass procedures in 39 patients with PTFE and distal ...
Dashwood M R - - 1998
Proliferation of vascular smooth muscle cells (VSMC) is a principal event in neointima formation in saphenous vein-coronary artery bypass grafts. Since endothelin-1 (ET-1) promotes VSMC replication and ET-1 receptor antagonists inhibit neointima formation in arterial injury models, it is reasonable to propose that ET-1 may be involved in neointima formation ...
Schamroth C L CL Department of Cardiology, Milpark Hospital, - - 1998
Aneurysms of aortocoronary saphenous bypass grafts are an unusual and rare complication of coronary artery bypass surgery. Approximately 30 such cases have been reported in the literature. Atheromatous aneurysms usually appear late (more than 10 years after grafting). They are usually asymptomatic, but may manifest for investigation as a lesion ...
Motwani J G - - 1998
Aortocoronary saphenous vein graft disease, with its increasing clinical sequelae, presents an important and unresolved dilemma in cardiological practice. During the 1st month after bypass surgery, vein graft attrition results from thrombotic occlusion, while later the dominant process is atherosclerotic obstruction occurring on a foundation of neointimal hyperplasia. Although the ...
Muluk S C - - 1998
Although saphenous vein is the most reliable conduit for arterial interposition procedures in the coronary circulation, graft thrombosis remains a clinical problem. We hypothesized that an important factor in early graft thrombosis is sudden change in the hemodynamic environment of the vein as it is placed in the coronary circulation. ...
Mohara J - - 1998
An elderly woman underwent coronary artery bypass grafting, which was followed 1 month later by pseudoaneurysmal rupture at the distal anastomosis of a saphenous vein graft. Emergency repair of the suture line dehiscence was made, and the postoperative course was uneventful. Pseudoaneurysm formation of a saphenous vein graft after coronary ...
Beattie D K - - 1998
OBJECTIVES: To assess the sensitivity of saphenous vein to potassium channel opening drugs (KCOs). METHODS: Saphenous vein, harvested at bypass surgery or high ligation for correction of varicose veins, was exposed to an in vitro flow circuit and vasomotor responses assessed by organ bath pharmacology. OUTCOME MEASURES: Effective drug concentrations ...
Rosenthal D - - 1998
PURPOSE: To report a minimally invasive approach to popliteal artery aneurysm (PAA) treatment. METHODS AND RESULTS: A 48-year-old male with a 3-cm PAA was treated electively with an endovascular in situ saphenous vein bypass and transluminal antegrade coil embolization of the PAA prior to completion of the proximal anastomosis. Two ...
Slaughter M S - - 1998
A technique is described for minimally invasive harvesting of the greater saphenous vein. This technique requires no new or disposable equipment, thus adding no additional cost to the procedure. It is rapid and reliable, and it can be performed in the majority of patients requiring greater saphenous vein for coronary ...
Ono T - - 1998
Greater saphenous veins removed at surgery for correction of venous dysfunction have few valves. Those that are present may be shrunken, deformed, or monocuspid. This study was carried out to determine whether leukocyte infiltration is associated with valve damage. Seventeen specimens were removed at surgery from five men and eight ...
Dashwood M R - - 1998
The regional distribution of endothelin-1 (ET-1) and its receptor subtypes (ETA and ETB) in porcine saphenous vein into carotid artery interposition grafts was studied 1 month after surgery and compared to ungrafted saphenous vein and carotid artery. ET-1 immunoreactivity was identified by immunohistochemistry and ET receptor subtypes were studied using ...
Wilson Y G - - 1998
The concept of vein quality has been slow to gain widespread acceptance, but an increasing body of evidence suggests that vein quality is relevant to the success of bypass grafting for peripheral vascular disease. The angioscope represents an additional tool for monitoring and preparing vein grafts during infrainguinal revascularisation. Within ...
Candon E - - 1998
In the surgical treatment of aneurysms of the upper cervical portion of the internal carotid a., exclusion of the affected vascular segment combined with an extra-anatomic cervico-petrous bypass using a vein graft (great saphenous v.) may be considered. One of the problems specific to these extra-anatomic bypasses is associated with ...
Fukui T - - 1998
We report herein the case of an 80-year-old woman who underwent successful redo coronary artery bypass grafting (CABG) for a saphenous vein graft aneurysm found 10 years after her initial operation. On presentation, coronary angiography (CAG) revealed aneurysmal dilatation of the saphenous vein graft and severe stenosis of the left ...
Hamburger J N - - 1997
The occurrence of fresh thrombus during percutaneous coronary interventions, especially in patients with diffusely diseased saphenous vein bypass grafts is associated with an increased incidence of procedural complications and clinical events. The AngioJet Rapid Thrombectomy Catheter was designed to remove thrombus via a Bernoulli effect induced vacuum. Here we report ...
Klofas E - - 1997
The saphenous vein cutdown has long been a mainstay for venous access in the trauma patient. During the past several years, however, its popularity and frequency of use have declined markedly. Percutaneous femoral catheterization using the Seldinger approach has essentially replaced the cutdown as the method of choice for gaining ...
Mishra J P - - 1997
Transluminal extraction catheter atherectomy has been shown to be a clinically effective interventional technique for the treatment of thrombotic degenerative saphenous vein bypass grafts. We will report the first case of detachment of transluminal extraction catheter cutter head from the shaft and its successful retrieval during a saphenous vein bypass ...
Pappas M J - - 1997
Revascularization for arterial stenosis in varied anatomic sites exposed to therapeutic radiation has been well described. In most circumstances, symptomatic end organ ischemia has been the indication for surgical intervention. We report the case of a patient who had symptomatic carotid stenosis 40 years after having ipsilateral neck dissection with ...
Golledge J - - 1997
OBJECTIVE: To review the mechanisms believed to be important in the development of vein graft stenosis, with particular attention placed on the adaptation of saphenous vein endothelium to a new haemodynamic environment. DESIGN AND METHODS: Discussion based on review of published research. RESULTS: The aetiology of vein graft stenosis remains ...
Labropoulos N - - 1997
Posterolateral thigh perforator (PLTP) veins are part of the lateral thigh venous system, which in most people remains undeveloped. This study was designed to determine the prevalence and clinical significance of these veins. Over the past 6 years, 2820 lower limbs with signs and symptoms of chronic venous disease (CVD) ...
Cable D G - - 1997
A technique of greater saphenous vein harvesting for coronary artery revascularization using an endoscopic approach is herein detailed. The saphenous vein is directly identified at the knee through a single incision. An endoscopic dissector is advanced proximally and distally along the course of the vein, ligating side-branches with clips. The ...
Jordan W D WD - - 1997
Saphenous vein harvesting remains a significant source of morbidity that occurs in 1% to 24% of patients who require lower extremity bypass or coronary artery bypass grafting. In an attempt to reduce complications associated with this procedure, we have used a new, minimally invasive technique to remove the greater saphenous ...
Ozek C - - 1997
Creation of alternative vascular conduits has been one of the most challenging subjects in the history of vascular surgery. In the past, afferent arteriovenous fistulas have been used by vascular surgeons to rescue ischaemic extremities. We have undertaken a comprehensive investigation to characterize arterialization of the venous system at different ...
Tishler S - - 1997
We present a case of a patient who experienced recurrent angina 15 months after coronary bypass surgery. A single lesion distal to a graft anastomosis was identified in the posterolateral coronary artery. There were two severe angulations, each greater than 90 degrees proximal to the lesion, with access possible only ...
Baddour L M - - 1997
BACKGROUND: No previous study has examined the immune and inflammatory mechanisms involved in the pathogenesis of lower extremity cellulitis after saphenous venectomy for coronary artery bypass graft surgery. OBJECTIVE: Our purpose was to determine the histopathologic, immunologic, and inflammatory findings in skin biopsy specimens from saphenous venectomy limbs of patients ...
Allen K B - - 1997
Although the use of arterial conduit has decreased the amount of saphenous vein required for routine coronary artery bypass grafting, the saphenous vein as a bypass conduit remains an essential component of most practices. We describe the technique of endoscopic vein harvest that, in our initial experience with 30 patients, ...
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