Search Results
Results 251 - 300 of 1189
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Noël Bernard M - - 2003
Transfemoral insertion of intra-aortic balloon pump (IABP) for hemodynamic support is a useful adjunct in patients undergoing complex percutaneous revascularization procedures. However, this approach is not always possible, particularly in patients with severe occlusive peripheral vascular disease. We describe the first reported case of insertion of IABP through the brachial ...
Terada Tomoaki - - 2003
OBJECTIVE: A new balloon protection catheter to prevent distal emboli during internal carotid artery percutaneous transluminal angioplasty and stenting was developed, and its efficacy was evaluated in both an experimental model and clinical cases. METHODS: The balloon protection catheter was navigated over a steerable 0.014-inch guidewire to negotiate tight stenoses ...
Fujita Shinya - - 2003
To get superior guiding catheter support, we tried a new method called the anchor technique. By inflating a balloon in a nontarget vessel and holding its shaft with backward force while advancing another balloon, the anchor effect for the guiding catheter could be obtained and it appeared to be helpful ...
Kusa Jacek - - 2003
The purpose of our paper is to assess the prognostic value of balloon occlusion as a test for patients with various types of functionally single ventricle after different palliative surgical procedures who were candidates for further modifications of a cavo-pulmonary operation. In all patients, there were at least two sources ...
Nagm Ashraf M - - 2003
Among patients with congenital heart disease, pulmonary branch stenosis is a common indication for stent implantation. Selective calibrated angiography is the standard method of vessel sizing to guide angioplasty balloon and stent selection. Our aim was to compare vessel dimensions from standard calibrated selective angiography with those obtained using a ...
Stiles David K - - 2003
FEM software was used to determine the feasibility of characterizing various types of atherosclerotic lesions in vivo. This was accomplished by simulating two electrodes as being attached to an angioplasty balloon in the coronary artery. The electrodes on the "balloon" touched and measured the simulated complex impedance of type III, ...
Sharma Naveen - - 2003
Distal embolization protection devices are fast becoming an integral part of percutaneous vein graft interventions. The distal elastomeric balloon of the PercuSurge GuardWire system is supposed to be atraumatic to the vessel wall. We report the inadvertent dilation of a moderate distal stenosis at the site of GuardWire balloon inflation ...
Oyama Naotsugu - - 2003
Cutting balloon angioplasty (CBA) was performed in a patient with in-stent restenosis (ISR) which had an important side branch. We used a hydrophilic polymer-coated guide wire for side branch protection during CBA. After CBA was successfully performed, the cutting balloon and guide wire were microscopically examined and proven to have ...
Baldi Sebastian - - 2003
Two types of balloon are usually employed to perform balloon-assisted coil placement in cerebral aneurysms: oval, guide-dependent balloons for sidewall aneurysms and round balloons for bifurcation aneurysms. We report on the use of a new, more compliant, guide-dependent oval balloon microcatheter to seal wide-neck bifurcation aneurysms with coils during endovascular ...
Smeets Mirjam B - - 2003
OBJECTIVE: Haptoglobin is a novel cell migration factor that is expressed in arteries after sustained flow changes and involved in arterial restructuring. Arterial restructuring is the major determinant of arterial shrinkage after balloon dilation. Although the function of extrahepatic haptoglobin expression is not yet understood, local haptoglobin expression may provide ...
Allaire Eric - - 2003
Intraoperative and postoperative arterial ruptures associated with 657 iliac artery balloon dilatation procedures in our department from 1981 to 2000 were prospectively collected and retrospectively analyzed. Our results showed that failure to exercise basic safety principles and the presence of heavily calcified plaque are the major predictors of iliac artery ...
Trehan Vijay - - 2003
We report a technique for retrieval of a balloon along with a portion of its shaft from the coronary system using a simple technique that does not involve the use of snare or any other retrieval tool. An additional angioplasty wire and a balloon catheter were used to remove the ...
Sherwood John T - - 2003
BACKGROUND: Aortomyoplasty (AMP), a procedure in which the latissimus dorsi muscle (LDM) is wrapped around the aorta and stimulated during diastole, is a potential method of chronic counterpulsation. Counterpulsation by the intraaortic balloon pump (IABP) is a proven treatment for ischemic coronary syndrome and heart failure but cannot be used ...
Kasirajan Karthikeshwar - - 2003
PURPOSE: To report the use of a new percutaneous mechanical thrombectomy device in the treatment of acute limb-threatening ischemia. TECHNIQUE: The Trellis Thrombectomy System is a 7-F drug dispersion catheter that features a treatment segment isolated by proximal and distal occlusion balloons, which help prevent distal embolization and systemic release ...
Ito Shigenori - - 2003
We describe 2 cases that indicate the Cutting Balloon could become a new alternative to treat flow-limiting coronary artery dissections by incising the intimal flap under intravascular ultrasound guidance. The mechanism is to create communications between true lumen and false lumen. In the first case, restoration of distal flow by ...
Mori Yoshiki - - 2003
Little is known about the growth potential of pulmonary stenotic lesions after balloon angioplasty (BA) in patients after the arterial switch operation. The aim of this study was to evaluate the growth potential of pulmonary stenotic lesions after BA and assess the midterm results of BA for pulmonary artery stenosis ...
Fischell Tim A - - 2003
Distal coronary artery perforation with a coronary guidewire is a relatively rare but potentially fatal complication during PTCA. Historically, these types of perforations have been easy to control with reversal of heparin anticoagulation combined with prolonged distal balloon inflation. In the modern era, with widespread use of potent glycoprotein IIb/IIIa ...
Joseph George - - 2003
A 23-year-old female patient with type III nonspecific aortoarteritis (Takayasu's arteritis) presented with multiple obstructive lesions and severe congestive heart failure. Large, cutting balloons 5-8 mm in diameter were used to dilate lesions in the abdominal aorta, both renal arteries, right common carotid artery, proximal left subclavian artery, and ostium ...
Yamasaki K - - 2003
Application of DNA technology to regulate the transcription of disease-related genes has important therapeutic potential. The transcription factor NFkappaB plays a pivotal role in the transactivation of inflammatory and adhesion molecule genes, leading to vascular lesion formation. Double-stranded DNA with high affinity for NFkappaB may be introduced as 'decoy' cis ...
Takai Shinji - - 2003
In this study, we investigated whether an orally active chymase inhibitor, 2-(5-formylamino-6-oxo-2-phenyl-1,6-dihydropyrimidine-1-yl)-N-[[3,4-dioxo-1-phenyl-7-(2-pyridyloxy)]-2-heptyl]acetamide (NK3201), prevents intimal hyperplasia in carotid arteries injured by a balloon catheter in dog. Each dog was administered NK3201 (1 mg/kg per day, p.o.) or placebo beginning 5 days before balloon injury and continuing through the experiments. Four ...
Chung Hwa-Jin - - 2003
We examined the inhibitory effects of traditional Chinese formulations (TCFs: Kampo formulation in Japanese) on intimal thickening of the carotid artery injured by balloon endothelial denudation in rats. Among the eight TCFs examined oren-gedoku-to (huanglian-jiedu-tang in Chinese), choto-san (diao-teng-san), saiko-ka-ryukotsu-borei-to (chaihujia-longgu-muli-tang) and dai-joki-to (da-cheng-qi-tang) significantly inhibited the intimal thickening 7 ...
Rolland Pierre H - - 2003
PURPOSE: To evaluate the therapeutic effects of local molsidomine delivery via a hydrogel-coated angioplasty balloon catheter during overstretch angioplasty in atherosclerotic swine iliac vessels. Molsidomine is retained in the arterial wall after local delivery for more than 72 hr and is slowly metabolized into linsidomine, releasing nitric oxide (NO). METHODS: ...
Oh Seung-June - - 2002
Advances in endourology have made transluminal balloon dilatation a safe and effective procedure for the treatment of ureteral strictures. Bilateral ureteral stricture was treated with retrograde balloon dilatation and ureteral stenting in a 59-year-old-woman. The patient had previously undergone abdominoperineal resection and adjuvant radiotherapy due to rectosigmoid adenocarcinoma. Subsequently, unilateral ...
Akin Mustafa - - 2002
Controversy exists with regard to the role of balloon angioplasty in the treatment of native aortic coarctation. Recent data and studies have showed that percutaneous balloon angioplasty is a safe and effective treatment for aortic coarctation. We report a young adult with aortic coarctation who has been treated with successful ...
Montorsi Piero - - 2002
The cutting balloon is a device that enlarges atherosclerotic coronary arteries by a combination of plaque incision and dilation. This peculiar mechanism would account for a better immediate result achieved at the cost of minimal vessel wall trauma. Coronary perforation is however a potential complication. No systematic data have been ...
Isobe Naoki - - 2002
Nicorandil is an antianginal drug that exerts both a conventional nitrate effect and an independent ATP-dependent potassium channel-opening effect. The present study examined the effects of nicorandil on left ventricular regional work (RW) during coronary angioplasty in 22 patients with angina pectoris who were scheduled for angioplasty to the left ...
Huang Ta-Cheng - - 2002
An 8-year-old girl was referred for evaluation of a heart murmur and progressive dyspnea with exertion. Transthoracic echocardiogram revealed Cor triatriatum with severe stenosis at its orifice. The resting transmembrane CW Doppler velocity was 2.3 m/sec. Cardiac catheterization and hemodynamic assessment were performed and demonstrated a marked increase in pulmonary ...
Loubani M - - 2002
Tracheobronchial benign stenoses may cause life-threatening emergencies. Here, we will describe a novel technique for the management of tracheal and bronchial stenoses using an intra-aortic balloon pump. The intra-aortic balloon pump was used for dilatation of a postoperative tracheal stricture in a 43-year-old man and a bronchial stricture in a ...
Meerkin David - - 2002
The significance of heavily calcified proximal left anterior descending coronary artery stenosis in a 57-year-old man was assessed physiologically using a Doppler flow wire. Intravascular ultrasound guidance allowed for adequate dilatation with a cutting balloon and optimization of stent deployment. The cutting balloon offers an effective alternative in this challenging ...
Ho Angie C Y - - 2002
We describe a patient who developed embolic stroke after coronary artery bypass grafting (CABG) associated with intraaortic balloon pump (IABP) insertion. Intraoperative transesophageal echocardiography (TEE) revealed marked irregular mass and disruption of the intimal surface of the thoracic aorta with overlying shaggy echogenic material on the intimal surface of the ...
Kawaguchi Katsuhiro - - 2002
BACKGROUND: Restenosis after successful balloon angioplasty remains problematic. Early elastic response after angioplasty is significant when considering the possible development of restenosis. The purpose of this study was to compare early elastic recoil within 10 minutes after successful percutaneous transluminal coronary angioplasty and early lumen loss at 24 hours after ...
Lee Michael S - - 2002
The Cutting Balloon is a unique angioplasty device used in percutaneous coronary interventions. The advantage of the Cutting Balloon is its ability to reduce vessel stretch and vessel injury by scoring the vessel longitudinally rather than causing an uncontrolled disruption of the atherosclerotic plaque. The atherotomes deliver a controlled fault ...
Engelke Christoph - - 2002
The objective of this study was to assess the efficacy of 6-mm Cutting Balloon angioplasty in patients with resistant peripheral stenoses caused by neointimal hyperplasia or irradiation-induced arteriopathy in vascular territories that are not amenable for use of the smaller Cutting Balloons that are used in cardiology. Peripheral Cutting Balloon ...
Strotmann Jörg M - - 2002
This study evaluated the impact of low-pressure balloon devices on coronary morphology and function. An active coronary perfusion catheter (2.5-mm balloon diameter, inflation with 1 bar for 30 min) was placed in the left anterior descending coronary artery of 12 German landrace pigs under general anesthesia. After 3 mo, coronary ...
Apple Marc - - 2002
BACKGROUND: Ionizing radiation administered intraluminally via catheter-based systems using solid beta and gamma sources or liquid-filled balloons has shown reduction in the neointima formation after injury in the porcine model. We propose a novel system that uses a 133-Xenon (133Xe) radioactive gas-filled balloon catheter system. METHODS AND RESULTS: Overstretch balloon ...
Kirksey L - - 2002
The intra-aortic balloon pump (IABP) is the gold standard for the mechanical assistance of failing heart. Balloon rupture is a potential complication that may result in a retained device. The operative removal by direct exposure of the femoral vessels has previously been described. We report the case of a retained ...
Peuster Matthias - - 2002
We report our experience with anterograde balloon valvuloplasty in 17 neonates treated between November 1996 and June 2001 for critical aortic stenosis. Patients with hypoplastic left heart syndrome were excluded. Anterograde balloon valvoplasty of the aortic valve was possible in all 17 patients. The mean peak systolic gradient prior to ...
Bartolomaeus Georg - - 2002
Angiographic diameters of 36 pulmonary artery stenoses (26 patients; median age, 3.3 years) before and after balloon angioplasty and at repeat angiography after 2-64 months were compared to diameters of 31 untreated pulmonary artery stenoses (20 patients) at a median age of 3.6 years and after 4-76 months. In the ...
Bian Xiaoming - - 2002
Intra-aortic balloon pumps (IABPs) cannot sustain hemodynamics if the left heart is severely injured. An enhanced IABP was evaluated in 6 anesthetized dogs with acute stenosis of the left anterior descending coronary artery, regional left ventricular (LV) stunning, and global LV dysfunction. An IABP balloon was inserted into the descending ...
Weber Howard S - - 2002
Critical pulmonary valve stenosis or atresia with intact ventricular septum is a rare congenital cardiac defect that can be technically difficult to alleviate in the catheterization laboratory. Over the past 10 years, several techniques and modifications with variable results have been advocated to facilitate the valvuloplasty procedure. This report describes ...
Fogelstrand Per - - 2002
Intimal hyperplasia is a common complication following vascular interventions. To understand the underlying pathophysiology, the focus has mainly been on the intima and media. The adventitia has been less investigated, although adventitial hyperplasia is seen together with intimal hyperplasia. If the adventitial response is an important part of the process, ...
Kiyan Gürsu - - 2003
Congenital H-type and recurrent tracheo-esophageal fistulas (TEF) are always difficult to diagnose. For a more accurate diagnosis we designed a new double balloon catheter, which is a modification of esophageal dilatation balloon. The catheter has two balloons to occlude the esophagus proximal and distal to the fistula. The fistula can ...
Haas Nikolaus A - - 2002
Percutaneous transluminal renal angioplasty (PTRA) is a well-established method to treat renal artery stenosis (RAS) in children and adults. However, a significant number of stenoses might not be treated by interventional techniques due to the inability to dilate the RAS. Conventional balloon angioplasty with a high-pressure coronary angioplasty balloon at ...
Cameron David C - - 2002
It is occasionally necessary to cross a sharp venous occlusion (a thin web of tissue without a lumen) and sometimes it is not possible to cross the stricture with a wire, so puncturing it with a sheathed needle is then required to enable stenting. Other methods have been reviewed; however, ...
Luengtaviboon Kittichai - - 2002
Intraaortic balloon entrapment syndrome is a rare complication of intraaortic balloon catheter. The leakage of blood into the balloon produces clots if the catheter is not immediately removed. Later removal is usually not possible and can be complicated by laceration of the aorta or its branches. The authors report a ...
Vahdat Arash - - 2002
A novel ultrasound transducer developed in our laboratory (CONTISON) was used for monitoring catheter balloon commissurotomy (CBC). The transducer was placed at the cardiac apex to obtain an apical four-chamber view and attached to the chest wall using an adhesive ring. During the procedure, the tip of the needle was ...
Kim Dong-Wook - - 2002
We report here that the traditional Chinese formulation, Chaihu-jia-Longgu-Muli-tang (CLM), significantly inhibited the increase in intimal thickening in rat carotid artery injured by balloon endothelial denudation, which mimics many aspects of restenosis after percutaneous coronary intervention (PCI) in humans. CLM, Saiko-ka-Ryukotsu-Borei-to in Japanese, is commonly prescribed for symptoms accompanying hypertension ...
Brueck Martin - - 2002
Coronary angioplasty of bifurcation lesions remains a technical challenge and is believed to result in low procedural success associated with the risk of side-branch occlusion. Furthermore, long-term results are associated with a high rate of reintervention. The aim of the study was to evaluate the immediate and long-term clinical and ...
Nakamura T - - 2002
Transcription factor E2F plays a pivotal role in the transactivation of cell cycle regulatory genes, leading to vascular lesion formation. Double-stranded DNA with high affinity for E2F as 'decoy' cis elements may block the activation of genes mediating the cell cycle, resulting in an effective therapeutic agent for treating intimal ...
Söder Heini K - - 2002
PURPOSE: To determine long-term patency of femoropopliteal artery percutaneous transluminal angioplasty (PTA) in a prospective trial during which prolonged balloon inflation was used for optimization of initial results. MATERIALS AND METHODS: Femoropopliteal PTA was performed in 112 limbs of 97 patients. The mean total length of the treated segments was ...
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