Search Results
Results 401 - 450 of 1369
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Benedek I - - 2005
The importance of interventional procedures in the complex treatment of peripheral arterial diseases is continuously increasing. In the current practice of our clinic, association of balloon angioplasty, laser angioplasty and arterial stenting in reconstruction of iliac arteries led to superior results in the latest years, these methods 11:42 PM 11:42 ...
Matsumaru Y Y Department of Neurosurgery, Institute of Clinical Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki; Japan - - - 2004
To study the efficacy and long-term outcome of percutaneous transluminal angioplasty (PTA) with/without stent placement for intracranial atherosclerotic stenoses, we reviewed our treated cases retrospectively. Between May 1992 and October 2003, PTA with/without stents was performed in 64 intracranial and skull base vessels in 62 patients, including 24 middle cerebral ...
Henry M - - 2004
Percutaneous transluminal angioplasty (PTA) with or without stenting of steno-occlusions in the supra-aortic arch vessels in aortoarteritis is associated with higher residual stenosis and restenosis, particularly in those with diffuse disease. The use of the new peripheral cutting balloon (Boston Scientific Interventional Technologies, San Diego, CA, USA) in these lesions ...
Sreenarasimhaiah Vijay P - - 2004
Conventional angioplasty of stenoses at the venous anastomosis has been demonstrated to be an important endovascular adjunct to mechanical thrombectomy of clotted arteriovenous dialysis grafts. In some cases, however, severe venous anastomosis stenosis is resistant to angioplasty. Cutting balloon angioplasty may have an advantageous role in these difficult situations in ...
Tanguay Jean-François - - 2004
This study aimed to investigate the effect of percutaneous endoluminal arterial cryoenergy immediately after balloon angioplasty on vascular remodeling. Restenosis, the main complication after coronary artery angioplasty, is a complex phenomenon in which vascular remodeling plays a prominent role. Observations of reduced scarring in freeze-induced wounds suggest potential value for ...
Treiman Gerald S - - 2004
Subintimal angioplasty is a relatively new endovascular approach for the treatment of patients with femoropoliteal or tibial artery occlusion. The procedure involves intentionally creating a false channel or dissection around an arterial occlusion, then reentering the true lumen distally. The procedure has a relatively low incidence of complications and a ...
Brountzos E N - - 2004
Percutaneous angioplasty is widely used for the treatment of iliac artery occlusive disease. Access to the ipsi-lateral, or less commonly contralateral, common femoral artery is obtained under local anaesthesia; the lesion is crossed with a guidewire and dilated with an angioplasty balloon catheter. This technique yields excellent immediate results with ...
Takeda Y - - 2004
OBJECTIVE: To evaluate long term (six years) lumen changes after balloon angioplasty by using quantitative coronary angiography. METHODS: Complete serial quantitative coronary angiography (before and after angioplasty and at six months, three years, and six years) was performed in 100 patients with successful angioplasty and without subsequent repeated revascularisation. In ...
Hung Chung-Lieh - - 2004
The rapid increase in the incidence of retained components in the coronary arteries during angioplasty raises the question of the optimal approach in these cases. Management extends from simply leaving the fragment behind to aggressive surgical removal. Increasingly, percutaneous approaches are being considered. A new percutaneous two-guidewire helix method has ...
Fiaschi-Taesch Nathalie - - 2004
BACKGROUND: Parathyroid hormone-related protein (PTHrP), a normal product of arterial vascular smooth muscle (VSM), contains a nuclear localization signal (NLS) and at least 2 translational initiation sites, one that generates a conventional signal peptide and one that disrupts the signal peptide. These unusual features allow PTHrP either to be secreted ...
Poncyliusz Wojciech - - 2004
BACKGROUND: To determine whether the use of hydrophilic guidewires has increased the technical success rate of peripheral percutaneous transluminal angioplasty (PTA). MATERIAL/METHODS: We performed 125 procedures and analyzed the technical success rates of PTA using the conventional guidewire first and then if needed, the hydrophilic guidewire for iliac and SFA ...
Bilodeau Luc - - 2004
This study was designed to evaluate safety and effectiveness of the 0.9 mm excimer laser coronary catheter with increased laser parameters. We report a prospective trial of 100 calcified and/or balloon-resistant lesions where a new 0.9 mm excimer laser catheter was used at standard or higher energy level to facilitate ...
Arko Frank R - - 2004
PURPOSE: To present the management of acute arterial ischemia following major abdominal and orthopedic surgery using a percutaneous thrombectomy device and a low dose of thrombolytic agent. CASE REPORT: A 38-year-old woman with T-8 paraplegia from a traumatic fall developed pelvic osteomyelitis, for which a left hemipelvectomy, hysterectomy, and partial ...
Falkowski Aleksander A Department of General and Dental Radiology, PMU, Szczecin, Poland. - - 2004
The method of percutaneous, endovascular recanalization of the iliac artery in patients with occluded common and external iliac arteries was used. In 58 patients (mean age 59 years), percutaneous endovascular recanalization of 40 common and 18 external iliac arteries was performed. In 2 cases the common superficial femoral artery was ...
Kawata Masahito - - 2004
A 60-year-old male with exertional dyspnea was referred to our hospital. Right pulmonary artery stenosis due to external compression by a calcified band was diagnosed by echocardiography, computed tomography, and magnetic resonance imaging. Percutaneous transluminal angioplasty was conducted in vain due to vascular recoil and failure of stent delivery. Pulmonary ...
Arts C H - - 2004
AIM: Seeding venous endothelial cells (EC) onto damaged vascular surfaces attenuates the development of intimal hyperplasia. Unlike venous EC, fat derived microvascular endothelial cells (MVEC) do not require a culture step to increase the yield. The authors investigated whether fat derived MVEC are suitable to reduce intimal hyperplasia after PTA. ...
Nadal Luis L - - 2004
Percutaneous treatment of peripheral arterial disease has evolved greatly. The prevalence of superficial femoral artery occlusions has necessitated new devices and techniques to treat these patients percutaneously. Presently several therapies are available or under investigation. These range from stents, drug eluting stents, covered stents, cryoangioplasty, laser recanilization, blunt micro dissection, ...
Ansel Gary M - - 2004
Options for lower limb percutaneous revascularization are limited especially for complex vessel obstruction. Cutting balloon angioplasty (CBA) has been described in the coronary literature as effective for complex disease. We analyzed our peripheral vascular database and report procedural outcomes along with the clinical success at a mean of 1-year follow-up ...
Rath P C - - 2004
Percutaneous transluminal angioplasty with or without stenting of steno-occlusions in the supra-aortic arch vessels in aortoarteritis is associated with suboptimal results and higher restenosis rates, particularly in those with diffuse disease. We report two cases of stand-alone cutting balloon angioplasty for patients who presented with critical stenosis of the common ...
Chikada Masahide - - 2004
BACKGROUND: We have developed a new hand-held probe for surgically open ultrasonic angioplasty. Two experimental studies were conducted to determine the optimal power range for carrying out ultrasonic angioplasty. METHODS: The probe measured 2.5 mm in diameter and 5 cm in length. The amplitude was 210 microm at 100% power. ...
Limbruno Ugo - - 2004
Transradial approach in primary and rescue angioplasty may be advantageous with respect to the femoral access due to the lower incidence of vascular complications. Ulnar cannulation has been proposed for elective procedures in patients not suitable for transradial approach. We here report on 13 patients undergoing primary angioplasty performed using ...
Clark Timothy W I - - 2004
The widespread use of percutaneous angioplasty for venous stenoses has lengthened the functional life span of hemodialysis access, while preserving precious venous capital. A subset of dialysis patients with dysfunctional access sites will harbor stenoses which are intractable, in that they fail to respond to conventional balloon angioplasty or recur ...
Yalonetsky Sergey - - 2004
Atherosclerosis remains the most common etiology of carotid artery stenosis, but other systemic diseases can also cause this disease. Percutaneous carotid angioplasty and stenting (CAS) with and without distal embolic protection devices is gaining acceptance as the treatment of choice. No-reflow phenomenon due to distal embolization has been previously described ...
Cedro Krzysztof - - 2003
BACKGROUND: Vascular wall remodeling is a major factor contributing to restenosis after angioplasty that involves migration and proliferation of vascular smooth muscle cells. The release of matrix-degrading metalloproteinases, including metalloproteinase-2 and metalloproteinase-9, facilitates remodeling. Experimental data suggest that nitric oxide (NO) decreases the activity of metalloproteinases and this may attenuate ...
Gahlen Johannes - - 2003
PURPOSE: To report a rare case of chronic vascular occlusion by an undetected ruptured balloon fragment following percutaneous transluminal angioplasty. CASE REPORT: A 79-year-old man suffered from calf claudication 1 year after angioplasty for a short stenosis in the superficial femoral artery. During the femoropopliteal bypass operation, a ruptured angioplasty ...
Tortoledo Francisco - - 2003
We report a patient with a cardiac penetrating wound who underwent cardiorrhaphy which resulted in accidental ligation of the proximal right coronary artery (RCA), producing a postoperative acute inferior wall myocardial infarction. Although the option of surgical relief of the suture over the RCA was discussed, a repeat operation was ...
Chau Helen Hoi-lun - - 2003
The purpose of this article was to describe the experience of relieving tension pneumomediastinum by a fluoroscopic-guided percutaneous method. We inserted a percutaneous drainage catheter with a Heimlich valve under fluoroscopic guidance to relieve the tension pneumomediastinum in a 2-year-old girl who suffered from dermatomyositis with lung involvement. This allowed ...
Walter Johannes - - 2003
PURPOSE: To describe the occurrence of a false aneurysm after percutaneous transluminal angioplasty of a severely calcified, high-grade stenosis of the brachiocephalic trunk. CASE REPORT: A 68-year-old patient was admitted with cerebrovascular insufficiency, right upper extremity ischemia, and recurrent amaurosis fugax. Magnetic resonance arteriography (MRA) and duplex ultrasound revealed a ...
Bapat Vinayak N - - 2003
Retrograde dissection of the aorta is a rare but potentially life threatening complication of percutaneous coronary intervention. We describe a case of retrograde aortic dissection, which occurred during attempted percutaneous transluminal coroanary angioplasty (PTCA) of chronically occluded left anterior descending artery (LAD). Emergency coronary artery bypass grafting (CABG) was performed ...
Harnek J - - 2003
PURPOSE: To investigate the development of intimal hyperplasia in response to percutaneous transluminal coronary angioplasty (PTCA) followed by local delivery of the nitric oxide (NO) donor 3-morpholino-sydnonimine (SIN-1). MATERIAL AND METHODS: Overdilation PTCA was performed in coronary arteries in 20 healthy pigs. One of the dilated segments was additionally treated ...
D'Ayala Marcus - - 2003
Recent reports have established the feasibility and safety of percutaneous transluminal angioplasty and stent placement in the treatment of innominate artery occlusive disease. Although the long-term durability of these endovascular approaches has not been clearly established, they are particularly attractive in patients who are not considered good candidates for surgical ...
König Claudius W - - 2003
PURPOSE: To evaluate the deliverability and protection capabilities of an embolism protection filter in angioplasty of peripheral arteries. METHODS: The Angioguard emboli capture guidewire system was applied in 11 patients with femoropopliteal lesions (6 stenoses, 3 occlusions, 2 controls). Data on lesion crossing, flow deceleration and macroembolization were recorded. Filter ...
Chamuleau Steven A J - - 2003
Homogeneity of microvascular resistance in different perfusion areas of the same heart is generally assumed. We investigated the effect of the severity of an epicardial stenosis on microvascular resistance in 27 patients with coronary artery disease and stable angina. All patients had an angiographically normal coronary artery, an artery with ...
Miyazaki Aya - - 2003
OBJECTIVES: We evaluated the efficacy of percutaneous transluminal coronary angioplasty for anastomotic stenosis after coronary arterial bypass grafting using the internal thoracic artery in patients with coronary arterial lesions due to Kawasaki disease. SUBJECTS AND METHODS: From July 1997 to April 2000, four boys and one girl underwent percutaneous transluminal ...
Mossop Peter - - 2003
Percutaneous transluminal angioplasty (PTA) can fail to revascularize peripheral arteries when a chronic total occlusion (CTO) cannot be crossed by guidewires. This article describes application of a new controlled blunt microdissection (CMD) catheter designed to cross CTOs. Two men presenting with severe claudication had iliac CTOs that resisted crossing with ...
Stavropoulos S William - - 2003
To investigate the use of abciximab as an adjunct during infrainguinal angioplasty. Abciximab was used in conjunction with recanalization techniques and angioplasty to treat stenoses or occlusions in 16 patients: 10 patients had high-grade stenoses or occlusions longer than 5 cm in the superficial femoral artery and popliteal artery, and ...
Kim Stanley H - - 2003
The authors report a case of an iatrogenic carotid-cavernous fistula (CCF) associated with intracranial angioplasty. Angioplasty was performed using a 3 x 10-mm Open Sail coronary balloon in a patient with high-grade stenosis of the left cavernous internal carotid artery (ICA). After angioplasty, a perforation developed in the cavernous ICA, ...
Kim Samuel C - - 2003
PURPOSE OF REVIEW: Percutaneous nephrolithotomy has undergone an evolution in technique and in equipment since its introduction in the late 1970s. This evolution continues today and is evidenced by the numerous publications about the technique. This review summarizes some of the important articles over the past year. RECENT FINDINGS: Although ...
Alexander Jason Q - - 2003
HYPOTHESIS: Percutaneous angioplasty would provide a durable alternative to surgical revision in the treatment of infrainguinal vein graft stenosis. DESIGN: Outcome analysis of the results of percutaneous angioplasty of infrainguinal vein graft stenosis. SETTING: Academic vascular surgical practice in a university-affiliated community hospital. PARTICIPANTS: All patients undergoing percutaneous intervention for ...
Kalinowski Marc - - 2003
Percutaneous mechanical thrombectomy is an established method in interventional radiology and refers to the removal of acute embolic or thrombotic occlusive material in arteries, veins, or vascular grafts using percutaneous transluminal methods. However, initial complete removal of occlusive material can be achieved only in a minority of patients. The amount ...
Drelich-Zbroja Anna - - 2003
PURPOSE: To assess the diagnostic value of Levovist in the ultrasound imaging of visceral arteries in patients with clinical symptoms of abdominal angina, before and after percutaneous transluminal angioplasty (PTA). MATERIAL AND METHOD: During a 12-month period (2000/2001) five patients with visceral arterial stenoses had ultrasound examinations and a subsequent ...
Whitbourn Robert J - - 2003
This study describes a new approach to crossing coronary chronic total occlusions using controlled blunt microdissection and its successful application to coronary angioplasty in three patients. After guidewire techniques failed to cross the occlusions, the blunt intraluminal microdissection catheter was deployed. Actuation of a hinged jaw on the catheter distal ...
Bergersen Lisa J - - 2003
The effectiveness of cutting balloon (CB) therapy was evaluated in severe pulmonary artery (PA) stenosis resistant to high-pressure balloon angioplasty in children with tetralogy of Fallot and pulmonary atresia. Thirty-eight pulmonary vessels (initial diameter 0.4 to 4.0 mm) resistant to high-pressure balloon angioplasty, as evidenced by a persistent waist, were ...
Both M - - 2003
The purpose of this study was to evaluate the safety and effectiveness of percutaneous transluminal angioplasty for occlusive arterial disease associated with vasculitis. Eleven patients (10 women, 1 man; ages 35-82 years) with the diagnosis of vasculitis of the large vessels underwent interventional treatment during intraarterial angiography. The causes included ...
D'Andrea Davide - - 2003
The internal mammary arteries are now widely used for surgical myocardial revascularization. Because of its excellent long-term patency rates, re-do surgery is rarely requested and transluminal percutaneous angioplasty of these arterial grafts is still relatively infrequent. This procedure is performed mainly at the distal anastomotic site but also at the ...
Solar Ronald J - - 2003
Focused force angioplasty is a technique in which the forces resulting from inflating an angioplasty balloon in a stenosis are concentrated and focused at one or more locations within the stenosis. While the technique has been shown to be useful in resolving resistant stenoses, its real value may be in ...
Hansky Bert - - 2002
OBJECTIVES: Retrospective analysis of five cases of coronary vein balloon angioplasty performed to allow insertion of left ventricular pacing leads. BACKGROUND: Coronary vein stenoses or an insufficient vessel caliber can preclude transvenous placement of coronary vein leads. METHODS: We compared our total patient population (n = 218), in whom we ...
Tsetis Dimitrios K - - 2002
PURPOSE: To evaluate the safety and efficacy of vibrational angioplasty in chronic infrapopliteal arterial occlusions. METHODS: Twelve patients (9 men, aged 54 to 90 years) with 13 below-knee arterial chronic total occlusions were treated percutaneously using vibrational angioplasty. The occlusions were located in the anterior tibial artery (n=5), the tibioperoneal ...
Sievert Horst - - 2002
The most common complication of carotid angioplasty is distal embolization of debris and/or thrombus. The only way to avoid this complication is with the use of embolic protection devices. Several filters, distal balloon occlusion devices, and proximal balloon occlusion devices are available. These devices make it possible to capture arteriosclerotic ...
Tonelli Marcello - - 2002
Screening strategies based on measurement of access blood flow (Qa) allow detection and angioplasty of subclinical stenosis in native vessel arteriovenous (AV) fistulae. However, little is known about the efficacy of Qa measurements for detecting recurrent stenoses in fistulae and that of angioplasty for correcting them. A total of 303 ...
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