Search Results
Results 301 - 350 of 1197
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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 ...
van Aalst Jasper - - 2002
The authors report on four third ventriculostomy procedures in which upward ballooning of the third ventricular floor occurred immediately after perforation of the floor and withdrawal of a Fogarty catheter. The floor herniated into the third ventricle, hindering the endoscopic view. Preoperative magnetic resonance imaging demonstrated a similar anatomy in ...
Fernandes Valerian - - 2002
We present a case of pulmonic stenosis with large aneurysmal poststenotic dilatation that was safely and effectively treated with balloon valvuloplasty. Though the poststenotic dilatation persists after the procedure, the risk of dissection and rupture is very low. Hence, balloon valvuloplasty should be considered the treatment of choice in this ...
Berger C - - 2002
Management of arterial occlusion after total knee arthroplasty is controversial in the literature, in part because of the relatively small number of reported cases. We report a case of perioperative popliteal artery thrombosis after total knee arthroplasty that was treated successfully with percutaneous thrombus aspiration and balloon dilation. Immediate intervention ...
Glaus T M - - 2002
Balloon dilation was used for the treatment of a recurrent nasopharyngeal stenosis in a cat with chronic stertorous breathing. The procedure was performed on three occasions at intervals of three and four months using a 15 mm valvuloplasty balloon dilation catheter. After the first dilation, clinical signs reappeared within two ...
Rhodes John F - - 2002
Patients with complex congenital heart disease may have pulmonary artery stenoses that are either congenital or associated with scarring following surgical procedures. This study evaluates cutting balloon angioplasty for small-vessel pulmonary artery stenoses resistant to standard balloon angioplasty. Between October 1998 and December 1999, patients were enrolled in an FDA-approved ...
Compos L - - 2002
Acute myocardial infarction, which occurs because of the occlusion of one or more coronary arteries, is the most common form of cardiovascular disease. Balloon angioplasty is often used to treat coronary artery occlusion and is less invasive than surgery involving revascularisation of the myocardium, thus promising a better quality of ...
Hong Tao - - 2002
OBJECTIVE: To study the efficacy and safety of cutting balloons in coronary interventions. METHODS: Twenty-two patients with 23 narrowed coronary arteries and 25 lesions enrolled the study, 17 of whom had 18 diseased coronary arteries and 18 lesions were in-stent restenosis. The average time from previous stenting was 7.60 +/- ...
Gardiner G A GA - - 2001
PURPOSE: Elastic recoil of the arterial wall has been shown to be responsible for a significant loss of luminal area after balloon angioplasty in the coronary arteries, but it has not been well studied in the peripheral arteries. Because elastic recoil depends on the presence of elastin in the arterial ...
Cook C - - 2001
PURPOSE: To describe a case of ultrasound and fluoroscopic-guided angioplasty necessitated by a patient history of allergic reaction to contrast medium. CASE REPORT: A 60-year-old man with intermittent right leg claudication had a focal >70% stenosis in the right external iliac artery that was amenable to balloon dilation; however, the ...
Ugurlu B - - 2001
Balloon dilatation is one of the treatment options in symptomatic infants with tetralogy of Fallot and hypoplastic pulmonary annulus and pulmonary artery. A balloon dilatation was performed on a 28-day-old infant with tetralogy of Fallot with an appropriate balloon. The patient developed two pseudoaneurysms on the right ventricular outflow tract ...
Oei S G - - 2001
In this case report we describe two patients with life-threatening postpartum hemorrhage who were treated successfully with arterial balloon occlusion of the hypogastric arteries. Arterial balloon occlusion is easy to perform and is applicable under difficult circumstances. The technique should be available in all hospitals that provide obstetric services. Obstetricians ...
Bussadori C - - 2001
Case records of 30 dogs in which valvular pulmonic stenosis (PS) was treated by balloon dilation were reviewed retrospectively. Physical examination, thoracic radiographs, 9-lead ECG, echocardiography, and Doppler studies were performed in all dogs. Two-dimensional and Doppler echocardiography were repeated after 24 h and 1 year after treatment. Dogs were ...
Collyer W C - - 2001
PURPOSE: Balloon dilation potentially represents a safer and simpler technique for the treatment of ureteropelvic junction (UPJ) obstruction and ureteral strictures. Using a porcine model, we sought to establish the optimal balloon size for endoballoon rupture of the UPJ and ureter. MATERIALS AND METHODS: The efficacy of endoballoon rupture of ...
Nishi S - - 2001
Percutaneous transluminal angioplasty with stenting for high-grade carotid stenosis has been recently come into use. However, distal embolic events remain a problem with this procedure compared to results with established carotid endarterectomy. To counteract such problems, various blocking balloon system such as a simple distal blocking balloon system or a ...
Ramamurthy S - - 2001
Transseptal puncture was accomplished with difficulty at an unfavorable site in a case of severe mitral stenosis with distorted atrial and septal anatomy. Septal balloon entrapment could not be avoided during attempts to cross the mitral valve using the standard technique. This problem was circumvented by resorting to the loop ...
Hubert S R - - 2001
BACKGROUND: Thermal balloon endometrial ablation is a relatively safe nonsurgical treatment for menorrhagia. Hematometra follows this procedure in <3 % of patients, but risk factors for this complication are unclear. CASE: A woman with a history of cervical incompetence during pregnancy later developed cervical occlusion and hematometra after thermal balloon ...
Nakanishi T - - 2001
BACKGROUND: Previous results show that the success rate of balloon angioplasty for pulmonary artery stenosis is low. Mortality and morbidity are significant in balloon angioplasty for coarctation of the aorta. METHODS: A review of the experience of balloon angioplasty for pulmonary artery stenosis and coarctation of the aorta at our ...
Echigo S - - 2001
BACKGROUND AND OBJECTIVES: Several studies have been reported in Japan. However, the reports consist of small series at individual institutions. We evaluated the immediate to long-term results of balloon valvuloplasty (BVP) of congenital pulmonary and aortic stenosis at multi-institutions in Japan. METHODS AND RESULTS: Immediate and follow-up data were obtained ...
Sanchez P L - - 2001
There is controversy as to whether the double-balloon or the Inoue technique of percutaneous mitral balloon valvuloplasty (PMBV) provides superior immediate and long-term results. This study was undertaken to analyze the effect of the learning curve of the Inoue technique of PMBV in the immediate and long-term outcome of PMBV. ...
Mertens L - - 2001
We report the successful use of a cutting-balloon catheter in dilating stenoses in major systemic-to-pulmonary collateral arteries which had been resistant to high pressure balloons. After dilation using the cutting balloon, we implanted stents to produce a marked improvement in both pulmonary blood flow and arterial saturation. The technique provides ...
Karkos C D - - 2001
Temporary aortic occlusion can be lifesaving in selected conditions. We describe the unorthodox use of an intra-aortic balloon pump without counterpulsation to achieve temporary vascular control in a patient with shock caused by rapid upper gastrointestinal bleeding. The technique of aortic balloon occlusion has been reported in several clinical circumstances, ...
Tsui L V - - 2001
Inhibition of proliferative neointima formed by vascular smooth muscle cells is a potential target in preventing angioplasty-induced restenosis. We have created a potent antiproliferative by fusing the active regions of the p27 and p16 cell cycle inhibitors. Intravascular delivery of a replication-deficient adenoviral vector (AV) encoding this p27-p16 fusion protein, ...
Roberts D A - - 2001
The continuous arterial spin-labeling (CASL) method of perfusion MRI is used to observe pulmonary perfusion dynamically in an animal model. Specifically, a respiratory-triggered implementation of the CASL method is used with approximate spatial resolution of 0.9 x 1.8 x 5.0 mm (0.008 cc) and 2-minute temporal resolution. Perfusion MRI is ...
Michaels A D - - 2001
Percutaneous balloon aortic valvuloplasty has been used as a therapeutic option for patients with severe aortic stenosis who are not candidates for aortic valve replacement. This procedure has been limited by both the high rate of aortic valve restenosis and high procedural morbidity related chiefly to the large femoral arteriotomies ...
Abad C - - 2001
BACKGROUND: Demonstrate the augmentation of flow of the internal mammary artery (IMA) after inflation of the graft with an atraumatic balloon catheter (Fogarty IMAG balloon catheter) before performing the anastomosis IMA-coronary artery, in coronary artery bypass operated patients. METHODS: In 1992 and 1993 a group of 87 coronary artery bypass ...
Ma X - - 2001
BACKGROUND: Gene therapy for the treatment of vascular disease is limited by a low transfection efficiency and/or undesired biological responses. OBJECTIVE: To determine the transfection efficiency of delivering a liposome/DNA complex into balloon-injured rabbit arteries systematically or using a local delivery catheter. METHODS: The cationic liposomes N-[1-(2,3-dioleoyloxy) propyl]-N,N,N-trimethylammonium methyl-sulphate and ...
Matsuoka S - - 2001
We successfully stabilized severe hemorrhagic shock following traumatic liver injury by percutaneous transcarotid supraceliac aortic occlusion with a 5 Fr balloon catheter. Then we were able to perform transfemoral embolization therapy of the hepatic arterial bleeding source. Transient aortic occlusion using a balloon catheter appears to be a useful adjunct ...
Freeman M L - - 2001
BACKGROUND: Pancreatic and bile duct strictures may be too stenotic to allow passage of conventional endoscopic dilators. METHODS: Four patients with strictures (3 pancreatic, 1 biliary) that could not be traversed with conventional endoscopic dilating devices, or in 1 case by a Soehendra stent extractor, underwent stricture dilation with a ...
Imazu H - - 2001
We present two patients with bleeding episodes from gastric fundal varices. The gastric fundal varices were treated by balloon catheter-assisted endoscopic sclerotherapy using alpha-cyanoacrylate monomer. The varices were successfully obliterated with no complications or hemodynamic changes to the gastrorenal shunts. This procedure may be considered a novel, feasible approach to ...
Powell B D BD Department of Internal Medicine, Mayo Clinic, Rochester, Minn 55905, - - 2001
Two cases of rare, catastrophic calcium emboli to the coronary arteries immediately after percutaneous mitral balloon valvuloplasty are presented. Preoperative echocardiographic findings may identify patients at risk for this complication. These cases should increase the awareness of calcium emboli and lead to consideration of urgent coronary angiography for patients with ...
Latson L A - - 2001
Critical pulmonary stenosis causes cyanosis and can be potentially lethal in the neonate. Initial treatment includes general resuscitation and infusion of prostaglandin E1 to dilate the ductus. The diagnosis is usually made echocardiographically, but a right ventriculogram in the outflow tract may be necessary in some patients with only a ...
Kalinowski M - - 2001
PURPOSE: To determine if local application of L-arginine, r-hirudin, or molsidomine significantly reduces restenosis after balloon angioplasty in stenotic rabbit iliac arteries. MATERIALS AND METHODS: Thirty-one male cholesterol-fed New Zealand white rabbits underwent balloon dilation of both common iliac arteries to induce arterial stenosis. Four weeks later, one stenotic iliac ...
Kidney D D - - 2001
The aim of this paper is to describe and evaluate the technique of prophylactic balloon occlusion of hypogastric arteries in abnormal placentation. Five patients with suspected placenta accreta, placenta percreta, or placenta increta underwent perioperative balloon occlusion of hypogastric arteries after classic cesarean delivery and before hysterectomy with hypogastric artery ...
Yozu R - - 2001
In recent years, minimally invasive cardiac surgery (MICS), or limited access cardiac surgery, has been presented as a promising operative procedure. We developed a new balloon device that is inserted directly into the ascending aorta to stop the heart during limited access cardiac surgery. The balloon has a three lumen ...
Dillavou E - - 2001
PURPOSE: Experiments were performed to determine if a local delivery catheter could deliver endothelial cells that would be retained on the luminal surface of balloon-dilated arteries. MATERIALS AND METHODS: Six New Zealand White rabbits underwent carotid catheterization, arteriography, and balloon angioplasty of an external iliac artery. A local delivery catheter ...
Geggel R L - - 2001
BACKGROUND: Experience of balloon dilation of peripheral pulmonary stenosis (PPS) in Williams syndrome (WS) is limited. METHODS AND RESULTS: Catheterizations in all patients with WS undergoing therapy for PPS from 1984 to 1999 were reviewed. Criteria for successful dilation included an increase >50% in predilation diameter and a decrease >20% ...
Gao W - - 2001
OBJECTIVE: To assess the effect of the balloon valvuloplasty for for congenital valvular aortic stenosis (AS) in children. METHODS: A total of 27 (mean age 6.09 years) children with AS accepted the treatment of percutaneous balloon aortic valvuloplasty (PBAV). The ratios of balloon/valve were 0.95 +/- 0.08 for 19 cases ...
Borghi A - - 2001
A vascular approach for balloon aortic dilatation in infants is of major concern due to the high risk of femoral artery injury. To overcome this problem, a surgical right carotid artery (RCA) approach has been advocated. No reports are available on RCA after neonatal cutdown. Since 1990, RCA cutdown has ...
Jain D - - 2001
We describe two cases of metallic balloon catheter shaft fracture, at a site just proximal to the hemostatic Y-adapter, while attempting to push the stent-balloon assembly through a tortuous left circumflex artery. In both instances, the stent carrying the balloon catheter had a stainless-steel hypotube constituting the proximal stiff portion ...
Hagiwara A - - 2001
BACKGROUND: Drug therapy plus balloon dilatation without gastroscopic incision does not always relieve postoperative pyloric stenosis. METHODS: Five patients with postoperative pyloric stenosis whose symptoms did not improve with drug therapy and balloon dilatation underwent a combination of gastroscopic incision and balloon dilatation. Two or 3 small radial incisions were ...
Moura A - - 2001
BACKGROUND: It has been shown that irradiation with either beta and gamma sources inhibit neointimal formation. Samarium-153 ((153)Sm) is an isotope with 0.8 MeV, subdivided in three different beta energies and 103 keV of gamma energy. This compound has been tested and used in humans for palliation of pain from ...
Wong A H - - 2001
PURPOSE: Insulin-like growth factor-1 (IGF-1) is a potent chemoattractant to vascular smooth muscle cells (SMCs). The authors hypothesize that perivascular release of IGF-1 in vivo can direct migration of SMCs away from the lumen and reduce neointima formation in a rabbit model of arterial balloon injury. MATERIALS AND METHODS: Balloon ...
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