Search Results
Results 201 - 250 of 1203
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Jiang Wei-jian - - 2006
OBJECTIVE: To investigate the feasibility of developing an animal model of patent foramen ovale (PFO) in piglets by percutaneous atrial septal puncture and balloon dilation. METHODS: A standardized percutaneous atrial trans-septal puncture and balloon dilation was conducted in 11 healthy piglets under general anesthesia. A Rups-100 system inserted through a ...
Laroche Denis - - 2006
The success of angioplasty depends on a balance between two conflicting objectives: maximization of artery lumen patency and minimization of mechanical damage. A finite element model for the patient-specific prediction of angioplasty is proposed as a potential tool to assist clinicians. This paper describes the general methodology and the algorithm ...
Themistoclakis Sakis - - 2006
BACKGROUND: Anatomic pulmonary vein (PV) variants may affect the ability to position balloon catheter systems at the left atrium (LA)-PV junction with complete circumferential contact, resulting in ineffective PV isolation. OBJECTIVES: This feasibility study was performed to assess the use of the fiberoptic endoscopic light ring balloon catheter (ELRBC) in ...
Ascher Enrico - - 2005
Balloon angioplasties of stenotic or occluded infrapopliteal arteries may be helpful in selected high-risk patients threatened with limb loss. Thus far, these procedures have demanded fluoroscopy and the injection of potentially nephrotoxic contrast material. Herein, we proposed a new alternative to avoid the harmful effects of radiation exposure and the ...
Bergersen Lisa - - 2005
INTRODUCTION: We sought to establish a modern understanding of the safety and efficacy of trans-catheter pulmonary arterial angioplasty. METHODS: A review of records in a sample of 104 dilations, out of a total of 711 procedures undertaken between January, 1996 and December, 2000, provided descriptive information regarding technique, adverse events, ...
Ascher Enrico - - 2005
The technique of balloon angioplasty of infrainguinal arteries requires standard arteriography and fluoroscopic guidance. We attempted to perform this procedure under duplex guidance to avoid the use of nephrotoxic contrast material and radiation exposure in patients with renal insufficiency. Over 16 months, 28 patients (17 men) with serum creatinine levels ...
Bergersen Lisa - - 2005
BACKGROUND: We sought to determine if the acute gains in pulmonary arterial diameter achieved by using Cutting Balloons to dilate stenoses in small arteries are maintained at follow-up. METHODS: A search of our database identified all patients who underwent dilation with Cutting Balloons for pulmonary arterial stenosis between June 2001 ...
Auer Johann - - 2005
The syndrome of "apical ballooning" consists of an acute onset of transient extensive akinesia of the apical portion of the left ventricle, without significant stenosis on the coronary angiogram. The syndrome is accompanied by chest symptoms, electocardiographic changes, and limited release of cardiac markers disproportionate to the extent of akinesia. ...
Caramella Thomas - - 2005
PURPOSE: To report the fortuitous discovery of a false aneurysm 7 years after cutting balloon angioplasty for severe renal artery fibromuscular dysplasia in a child. CASE REPORT: A 3-year-old girl with neurofibromatosis was referred to our institution because of high blood pressure (220/160 mmHg). Computed tomography identified coarctation of the ...
Seale A N - - 2006
To determine the safety and effectiveness of cutting balloon angioplasty for pulmonary vein stenosis (PVS). Retrospective review of case notes and cardiac catheterisation data at the Royal Brompton Hospital. Diameter of pulmonary vein, tricuspid regurgitant jet velocity on echocardiogram, and percutaneous oxygen saturation before and after cutting balloon angioplasty. Three ...
Shih Jin-Chung - - 2005
A case of placenta percreta was referred at 31 weeks' gestation. We performed a cesarean hysterectomy preceded by placement of occlusive balloon catheters at bilateral common iliac arteries at 34 weeks' gestation. This simple and safe technique provides satisfactory efficacy for control of profuse bleeding during operation, with blood loss ...
Escalera Robert B RB - - 2005
This report describes a new valvuloplasty procedure for the treatment of pulmonary valve stenosis (PVS) and large pulmonary valve annulus (PVA) diameters using a triple-balloon valvuloplasty (TBV) technique. We sought to demonstrate the safety and efficacy of this new technique. Percutaneous balloon pulmonary valvuloplasty (BPV) is the preferred treatment for ...
Lalonde G - - 2005
A 48-year-old woman presented to her local hospital with chest pain. Her electrocardiogram showed incomplete right bundle branch block, diffuse ST segment elevation and QTc prolongation. Shortly after admission, she became hypotensive and was referred for a coronary angiogram. Her coronary arteries were normal, but left ventriculography showed morphological changes ...
Zaidat Osama O - - 2005
This case report demonstrates that mechanical clot disruption and retrieval may be performed safely and successfully in a child with basilar artery (BA) thrombosis. A 16-year-old boy presented to our institution with locked-in syndrome 20 h after symptom onset. Brain MRI and cerebral angiography findings were consistent with BA occlusion. ...
Sarabanda Alvaro V - - 2005
OBJECTIVES: We sought to evaluate the efficacy and safety of a novel cryothermal balloon ablation system in creating pulmonary vein (PV) isolation. BACKGROUND: Pulmonary vein isolation using standard radiofrequency ablation techniques is limited by procedure-related complications, such as thrombus formation and PV stenosis. Cryothermal ablation may reduce the risk of ...
Marcu Constantin B - - 2006
The intraaortic balloon pump (IABP) is frequently used in the management of cardiac failure in the setting of myocardial infarction or as a bridge for coronary revascularisation surgery. The IABP is usually inserted through the femoral artery. Occasionally severe aorto-iliac occlusive disease prevents the retrograde passage of the balloon, in ...
Kim Dennis W - - 2005
For infants with valvar aortic stenosis, balloon aortic valvuloplasty has supplanted surgical valvotomy as the initial treatment of choice at most institutions. Technological innovations have resulted in further miniaturization of balloon dilation catheters, allowing this procedure to be performed through smaller sheath sizes. Currently, the Tyshak-Mini balloon dilation catheter (B. ...
Marshall Audrey C - - 2005
OBJECTIVES: To describe technical aspects of successful fetal aortic valvuloplasty, with particular attention to balloon size. STUDY DESIGN: We retrospectively reviewed all procedural records and echocardiograms pertaining to 26 attempts at fetal aortic valve dilation performed at a single center over a period of 4 years. We assessed the effect ...
Arat Anil - - 2005
We describe a remodeling technique in which two compliant balloon catheters were used to treat large, wide-necked bifurcation aneurysms distal to the circle of Willis in two patients with subarachnoid hemorrhage. Although vasospasm and interaction between the constrained catheters in the small distal arteries added to the complexity of the ...
Yasu Takanori - - 2006
We present a case of a 64-year-old man with transient mid-ventricular ballooning cardiomyopathy. Left ventriculography showed morphological differences with ballooning around the whole mid-portion of the left ventricle, although precipitating factors and clinical courses were similar to Takotsubo cardiomyopathy. We suspect that transient mid-ventricular ballooning cardiomyopathy is a new pathological ...
Weigang E - - 2005
OBJECTIVE: To prevent clamp injury that may occur during aortic surgery, we aimed to develop a special balloon occlusion (BO) device to lower the thromboembolic risk in patients with severe atherosclerosis during aortic aneurysm repair. METHODS: The study comprised two test phases: a laboratory-testing series focussing on flexible artificial aortas, ...
Gupta A K AK Department of Radiology, Sree Chitra Tirunal Institute of Medical Sciences and Technology, Trivandrum; India - - - 2005
We describe a novel technique to retrieve broken catheter fragments from the vascular tree at difficult locations using a balloon. A coronary balloon can be taken over a microwire into the catheter fragment to hold it after inflation of the balloon and then the whole assembly can be gradually taken ...
Warnecke Henning - - 2005
Sternal contact of aortic aneurysms in redo operations may require specific techniques to safely control bleeding during sternotomy and surgical dissection. This is the first report on the preoperative use of an inflatable balloon to prevent massive hemorrhage by inserting the balloon--a procedure performed in the cardiac catheterization laboratory--before rethoracotomy. ...
Kalinowski Marc - - 2005
PURPOSE: To evaluate the efficacy of NF-kappa B oligonucleotides (ODN) administered by local administration with the channeled balloon catheter to prevent restenosis after balloon angioplasty in restenotic iliac arteries of New Zealand white rabbits. MATERIALS AND METHODS: In vitro, 8000 rabbit vascular smooth muscle cells (rVSMC) where transfected with a ...
Lin Sir-Chen - - 2005
While balloon valvuloplasty has been widely used for the treatment of congenital valvular pulmonary stenosis (PS) in children and adults, its use in elderly patients is less common. An 80-year-old woman with congenital valvular PS received valvuloplasty with double-balloon technique. Right ventricle systolic pressure and pulmonary valve systolic pressure gradient ...
Oguzkurt Levent - - 2005
A 24-year-old woman with uncontrollable high blood pressure for 3 months had significant stenosis of the left renal artery caused by fibromuscular dysplasia (FMD). The lesion was resistant to percutaneous transluminal angioplasty at 18 atm with a semicompliant balloon. Angioplasy with a 6 x 10 mm cutting balloon (CB) caused ...
Tanemoto Masayuki - - 2005
Balloon angioplasty is an established intervention to treat renovascular hypertension. Conventional balloon angioplasty is usually effective in cases of renovascular hypertension caused by fibromuscular dysplasia. In the present report, we describe two cases of renovascular hypertension caused by fibromuscular dysplasia in which stenotic lesions were resistant to conventional balloon angioplasty ...
Henkes H - - 2005
The endovascular treatment of atherosclerotic intracranial arterial stenoses has previously been based on balloon dilatation or the deployment of a balloon expandable stent. Both methods have advantages (balloon: flexibility; balloon expandable stent: high radial force) and drawbacks (balloon: risk of elastic recoil and dissection; balloon expandable stent: limited flexibility, risk ...
Sakata Yoshihito - - 2005
Percutaneous balloon aortic valvuloplasty (BAV) has been limited predominantly to a palliative treatment for poor surgical candidates with critical aortic stenosis and multiple high-risk or comorbid conditions. The most commonly used technique for BAV is the retrograde approach, in which the balloon is passed via the femoral artery using 12-14 ...
Sideris E B - - 2005
To study the feasibility, efficacy, and safety of total percutaneous correction of a tetralogy of Fallot variant with dominant pulmonary valve stenosis. Percutaneous correction of a variant of tetralogy of Fallot with dominant pulmonary valve stenosis, on the basis that there are transcatheter methods for the correction of malalignment-type ventricular ...
Wholey Michael H - - 2005
The objectives of this study were to reduce the risk of showering distal vessels with thromboemboli created during percutaneous interventions of the arteries in the lower extremities. Distal protection devices have been used in coronary and carotid interventions. Hence, using similar techniques, these filters and occlusion balloons were advanced past ...
Ono Takayuki - - 2005
With increasing experience, off-pump coronary artery bypass grafting for high-risk patients can be performed safely. However, in patients who need intraaortic balloon counterpulsation support, mistriggering of intraaortic balloon counterpulsation during mobilization of the heart can induce unstable hemodynamic conditions. My colleagues and I have developed a simple method of detecting ...
Tatsutani Kristine N - - 2005
The success of endovascular techniques such as balloon angioplasty and stenting in the treatment of atherosclerotic vascular disease has been limited by an aggressive proliferative response leading to neointimal hyperplasia and re-stenosis. A new endovascular therapy combining cold treatment with balloon dilation has been proposed to prevent arterial re-stenosis. In ...
Yamaguchi Koji - - 2005
Formation of aneurysms in the coronary arteries with the use of the PercuSurge distal protection system has not been reported. We describe a 54-year-old man with acute myocardial infarction who was treated with the PercuSurge system. Angiography performed 2 weeks later revealed an aneurysm in the area of inflation of ...
Schuknecht B - - 2005
Endovascular treatment by balloon angioplasty or intra-arterial papaverine infusion has been established as a valuable treatment option in patients with cerebral vasospasm refractory to maximal medical therapy. A summary of the indications, applications and limitations is provided for microcatheter guided selective papaverine infusion and transluminal balloon angioplasty in patients who ...
Kuroiwa T T Division of Neuroendovascular Therapy, Institute of Biomedical Research and Innovation; Kobe, Hyogo, - - 2004
The purpose of our experimental study was to assess the pitfalls of distal balloon protection systems and to learn any technique tips to increase safety. Silicone carotid artery models were connected to a circulatory system to simulate arterial flow. A distal balloon protection device, PercuSurge GuardWire Plus (GWP, Medtronic Vascular) ...
Song Ha-Hun - - 2004
Peripheral cutting balloons with diameters of 5-8 mm were employed to dilate eight resistant stenoses among 62 venous stenoses in 48 Brescia-Cimino fistulas. The grade of stenosis after high-pressure balloon angioplasty ranged from 57% to 87% (median, 75%). The residual stenosis after cutting balloon angioplasty ranged from 0 to 24% ...
Smith Wendy Kim - - 2004
A male infant presented with failed extubation was diagnosed with congenital microtrachea. After primary combined surgery with excision of a left pulmonary artery sling and microtracheal resection with anastomosis incorporating the excised microtrachea as an autologous anterior tracheal graft he was treated with balloon dilatation of the re-stenosed segment on ...
Kolluri Raghu - - 2004
Fibromuscular dysplasia (FMD) is a noninflammatory, nonatherosclerotic disease of the vascular system, that can affect intima, media, or adventitia. The dysplasia in these layers leads to decrease in the lumen and increased turbulence leading to diminished flow through the affected portion. The treatment of FMD thus far has been either ...
Sanna Mario - - 2004
OBJECTIVE: To present our experience with permanent preoperative balloon occlusion of the internal carotid artery while dealing with different abnormalities of the lateral skull base and a comparison with the results mentioned in the literature. STUDY DESIGN: Retrospective case review. SETTING: Private neurotologic and skull base tertiary referral center. PATIENTS: ...
Döpfmer Ulrich R - - 2004
Severe pulmonary bleeding causes frequent mortality, particularly if this event occurs during separation from extracorporeal circulation during cardiac surgery. We present a new approach to treat this life-threatening complication: temporary balloon occlusion of the pulmonary artery feeding the involved lobe. On attempting to wean a 71-yr-old female patient from cardiopulmonary ...
Daehnert I - - 2004
To describe the use of rapid right ventricular pacing to facilitate balloon stability during balloon dilatation procedures for congenital heart disease. Tertiary paediatric cardiac centre. This was a prospective pilot study of 37 consecutive patients with congenital aortic stenosis undergoing elective balloon dilatation. If the first dilatation manoeuvre failed due ...
Olbrich Tom - - 2004
Heart disease is the leading cause of death in the western world, and percutaneous transluminal coronary angioplasty (PTCA) and stent deployment are standard procedures used to reopen and/or stabilize blocked coronary arteries. Despite considerable improvements in these techniques, restenosis is still a long term problem, with patients requiring repeated procedures. ...
Sadato Akiyo - - 2004
Periprocedural neurological complications (PNCs) after carotid stenting were retrospectively analyzed to determine the risk factors with the use of various protective devices. Forty-three lesions in 40 patients were treated by carotid stenting with distal balloon protection for nearly all postdilation procedures and some predilation procedures. The following variables were statistically ...
Lim J S L - - 2004
Angiography remains the gold standard in the preoperative evaluation of complex pulmonary blood supply in patients with pulmonary atresia, ventricular septal defect, and major aortopulmonary collateral arteries. In neonates, balloon occlusion aortography using a Berman balloon catheter is a very effective technique. However, in older patients this method is frequently ...
Handa A - - 2004
The purpose of this study was to describe a balloon-assisted double-lumen microcatheter technique to perform a controlled and tight coil packing of a vascular segment for vessel occlusion. This technique can be performed immediately after a test occlusion with the balloon kept in place and was, as illustrated in six ...
Luo Chao-Bao - - 2004
BACKGROUND: This study investigated the causes of recurrent traumatic carotid-cavernous fistulas (RTCCFs) after detachable balloon embolization and evaluated the selection of embolic materials for endovascular treatment of the RTCCFs. METHODS: Over a 10-year period, 116 patients underwent transarterial balloon embolization with occlusion of the fistulas and preservation of the parent ...
Sugiyama Hisashi - - 2004
Treatment for peripheral pulmonary artery stenosis is challenging, and conventional balloon angioplasty has not proved to be universally effective. Evaluated was the efficacy of bladed balloon (BB) dilation to address vessels resistant to conventional high-pressure (10-15 atm) balloon angioplasty (BA). Thirty-one procedures were performed on 14 children with age range ...
Gerganski Penko - - 2004
Distal protection devices protect only a single distal vessel. We describe a novel technique to protect both branches following a thrombus-containing bifurcation lesion. The combination of an occlusive balloon and an arterial filter system provides an attractive solution to the challenging environment of a lesion at high risk for distal ...
Yamane Takashi - - 2004
Recently, there has been increasing interest in treating intraocular retinoblastoma with systemic chemotherapy combined with focal laser therapy and cryotherapy instead of radiotherapy. We developed a system of selective ophthalmic arterial infusion (SOAI) therapy, administering melphalan, the agent which had the greatest effect on retinoblastoma in a clonogenic assay. The ...
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