A 77-year-old man with unstable angina pectoris showed severe coronary stenosis with soft plaque in the left anterior descending coronary artery (LAD) as detected by 64-multi-detector row computed tomography (MDCT). Percutaneous coronary intervention (PCI) with a bare-metal stent to the LAD was performed, and stent fracture immediately after PCI was ...

BACKGROUND AND AIM: Bifurcation lesions are relatively frequently encountered in everyday interventional practice. Stenting of the vessel chosen to be main (usually the larger one) frequently leads to stenosis at the ostium of the side branch (SB) and compromises its flow (side branch compromise--SBC). The relative dependence of main and ...

The purpose of this study was to use intravascular ultrasound (IVUS) to investigate chronic arterial responses at the site of and adjacent to overlapping paclitaxel-eluting TAXUS stents (PES) compared with overlapping bare-metal stents (BMS). Increased paclitaxel dose in the PES-overlap region might be associated with arterial toxicity expressed as excessive ...

Stent thrombosis is a potentially catastrophic complication of coronary artery stenting. There have been particular concerns about the incidence of stent thrombosis following insertion of drug-eluting stents. We report a series of cases in which stent thrombosis occurred in association with malignancy and describe the potential mechanisms behind such an ...

The current evolution towards treating more complex femoropopliteal lesions as seen in the renewed TASC II recommendations clearly reflects the continuous evolutions in femoropopliteal stent design. Recent stent design improvements focus on decreasing stent fractures rates which can negatively impact patency rates. By rearranging strut alignment towards helical connecting bridges ...

Carotid endarterectomy is the standard treatment for carotid stenosis, but carotid artery stenting has emerged as a potential alternative. Elective carotid artery stenting was performed in 42 patients aged 42 to 79 years (mean, 67.05 +/- 8.67 years) after ultrasonography, computed tomography, magnetic resonance angiography and a neurological evaluation. There ...

OBJECTIVE: We investigated whether repeat renal artery stent placement compared with treatment with balloon angioplasty alone results in better patency in patients presenting with renal artery in-stent restenosis (ISR). BACKGROUND: Although stent placement for renal artery stenosis has been demonstrated to be superior to balloon angioplasty for "de novo" renal ...

BACKGROUND: Prostatic urethral stents are effective in relieving obstructions caused by benign prostatic hyperplasia (BPH). However, migration of these stents occurs frequently. PURPOSE: To evaluate the efficacy of a flared stent for decreasing the migration rate in comparison with a straight stent in a canine prostatic urethral model. MATERIAL AND ...

The importance of angioplasty and stenting in the treatment of carotid artery disease cannot be underestimated. Successful carotid stenting does not only depend of the operator's skills and experience, but also an adequate selection of cerebral protection devices and carotid stents can help avoiding neurological complications. A broad spectrum of ...

We present a case in which angioplasty alone and stent-assisted angioplasty were performed in the same patient to treat medically refractory intracranial stenoses. This elderly patient with presumed intracranial atherosclerotic disease underwent angioplasty alone for his anterior cerebral artery stenosis. Stent-assisted angioplasty was used for treatment of his ipsilateral middle ...

INTRODUCTION: We report our experience with endovascular treatment (EVT) of circumferential and fusiform intracranial aneurysms by a reconstructive approach with self-expandable stents. METHODS: A retrospective review of our prospectively maintained database identified all circumferential and fusiform aneurysms treated by a reconstructive endovascular approach over a 3-year period. Clinical charts, procedural ...

A coronary stent may be lost in the peripheral or visceral arterial system with an incidence ranging from 0.9 to 8.4%, however, a limb or organ ischemia after stent migration is very uncommon. We report the case of an 83-year-old man who underwent coronary artery stenting at our Hospital's Cardiological ...

Arterio-ureteric fistulae are rare but can be associated with significant morbidity and mortality. We describe a novel case in which an arterio-ureteric fistula occurred as a complication following external iliac artery angioplasty and stenting, in a patient who had undergone previous pelvic surgery, radiotherapy, ureteric stenting, and urinary diversion surgery. ...

BACKGROUND: A 66-year-old man presented to hospital with gross hematuria and clots. He had previously undergone surgical repair of a right iliac artery aneurysm with placement of a vascular prosthesis at the same hospital, which had resulted in iliac urethral stricture that required the placement of a right ureteral stent. ...

Brachial artery aneurisms in children under 1 year of age are very rare. The main risk is distal ischaemic complication. We report four infants suffering from brachial artery aneurism of unknown origin. In all cases we used Doppler ultrasonography to validate the clinical diagnosis. Pre-operative vascular check-up was negative for ...

BACKGROUND: Repair of neonatal tetralogy of Fallot (TOF) has low mortality. Debate continues regarding the initial management of cyanotic or duct-dependent infants with TOF and adverse risk factors. While repair can and has been performed in these patients, it is associated with increased morbidity. OBJECTIVE: We review the effectiveness of ...

INTRODUCTION: Stenoses in the pulmonary arterial system can have a significant negative impact on the early postoperative course in infants. Early recognition and aggressive management are mandatory. PATIENTS AND METHODS: We describe our experience with 8 infants, with ages ranging from 3 to 9 months, weighing from 4.5 to 7.7 ...

To provide a quantitative analysis of long-term clinical outcomes, a meta-analysis of 4 randomized controlled trials of percutaneous coronary intervention (PCI) with stenting versus coronary artery bypass grafting (CABG) for multivessel coronary artery disease was conducted. The search identified 4 randomized controlled trials of PCI with stenting versus CABG that ...

BACKGROUND: The authors describe a case of basilar artery dissection treated with Neuroform stenting. This new treatment modality for basilar artery dissection may be safer than anticoagulation in patients with subarachnoid hemorrhage. However, complications associated with stenting should be taken into careful consideration. These complications include thromboembolism and stent infection. ...

We describe the case of a man who underwent primary angioplasty with stenting for acute myocardial infarction and subsequently developed a coronary artery aneurysm at the site of stent deployment. The aneurysm grew rapidly in size over a few weeks and required treatment with a covered stent. The use of ...

Radial diagnostic angiography and percutaneous coronary intervention have been shown to be safe and feasible with fewer major complications in comparison with the femoral approach. Despite their safety profile, occasional vascular complications do still occur. We present a case of a brachial artery perforation treated successfully by the deployment of ...

The treatment of external auditory canal (EAC) stenoses often requires the prolonged use of a stent or splint. Traditional stents often occlude the EAC, resulting in a temporary conductive hearing loss. This case report describes a custom canal earmold with a large bore used as a stent in a patient ...

PURPOSE: To evaluate the ability of heparin coating to inhibit Double J stent encrustation and compare it with the classic polyurethane Double J stent. PATIENTS AND METHODS: The study involved five patients with bilateral obstructions, who required bilateral ureteral Double J stent placement. Every patient received a heparin-coated Double J ...

PURPOSE: It is hypothesized that the inorganic polymer poly[bis(trifluoroethoxy)phosphazene] (PTFEP) reduces stent-associated thrombosis, in-stent stenosis, and inflammatory response and stimulates reendothelialization in a porcine model. MATERIALS AND METHODS: PTFEP-nanocoated and bare stainless-steel stents (316 L) were implanted bilaterally in renal and iliac arteries of 16 minipigs (1, 4, and 12 ...

Endovascular therapy is the treatment of choice for type A and the preferred treatment for type B lesions. In selective patients, this type of treatment can be applied in type C and even type D lesions. Ipsilateral femoral, contralateral femoral, and brachial approach and both the intraluminal and subintimal space ...

The goal of this study was to evaluate the ability of recombinant human thrombomodulin (rTM) to inhibit neointimal hyperplasia when bound to expanded polytetrafluoroethylene (ePTFE) stent grafts placed in a porcine balloon injured carotid artery model. The left carotid artery of male pigs, weighing 25 to 30 Kg, was injured ...

BACKGROUND: Although the left subclavian artery (LSA) is simply covered to exclude distal aortic arch aneurysm during endovascular stent-grafting, this technique is potentially harmful. METHODS AND RESULTS: Between January 2001 and April 2005, 40 cases of stent-grafting were performed for distal aortic arch diseases. For all 31 elective cases, the ...

PURPOSE OF REVIEW: Conventional ureteral stents, which have been in use for almost 30 years, are undergoing several changes in materials, designs and purposes of use. RECENT FINDINGS: Recent advances in ureteroscopes reduced the numbers of double-J insertions. In addition, because of the frequent failures of the double-J stents in ...

To evaluate the potential utility of a self-expandable intratracheal nitinol stent with flared ends for the treatment of tracheal collapse in dogs, endotracheal stenting therapy was performed under fluoroscopic guidance in four dogs with severe tracheal collapse. During the 4 to 7 month followup, after stent implantation, clinical signs, including ...

OBJECTIVE: To evaluate intimal thickening secondary to stent placement or to insertion of the delivery system without stent placement in pig carotid arteries. METHODS: Stents were placed in the right common carotid arteries of 7 pigs, and 7 other control pigs underwent only insertion of the delivery system without stent ...

A 10-day-old child with hypoplastic left heart syndrome (HLHS) underwent first-stage palliation for HLHS, Norwood procedure with a Sano modification, i.e., placement of a right ventricular to pulmonary artery (RV-PA) conduit. The patient developed progressively worsening systemic oxygen desaturation in the immediate postoperative period. Stenosis of the proximal RV-PA conduit ...

Aberrant coronary arteries are frequently observed in patients presenting with Fallot's tetralogy (TOF). Before the complete surgical repair of the TOF, the percutaneously performed pulmonary trunk (PT) angioplasty is often performed in order to temporarily increase the pulmonary circulation, thus increasing the pulmonary vessel size, finally improving surgical outcome. This ...

Aims: To evaluate the safety and long-term efficacy of a true dedicated bifurcation bare metal stent (DBS) for the treatment of bifurcation coronary artery lesions. Methods and results: Thirty-four patients were enrolled in this prospective multicentre study. The majority of culprit lesions were located on the left anterior descending artery/diagonal ...

A 2.5 x 32 mm Taxus Libert e stent was deployed at high pressure in the proximal right coronary artery (RCA) of a 71-year-old male patient, but the distal part of the lesion remained uncovered. A second stent (Driver 2.5 x 12 mm) could not be advanced through the first ...

AIMS: Percutaneous pulmonary valve implantation (PPVI) is now an accepted treatment strategy for right ventricular (RV) outflow tract (RVOT) dysfunction in many European Heart Centres. We analysed the efficacy of repeat PPVI as a treatment modality for early device failure. METHODS AND RESULTS: Twenty patients underwent repeat PPVI for RVOT ...

Kissing stent reconstruction of the aortoiliac bifurcation is a widely used technique for the management of aortoiliac occlusive disease involving the aortic bifurcation or proximal common iliac arteries. New advances in delivery systems and stent design have enabled better anatomic results with kissing stenting. Long-term patency is generally excellent, although ...

Carotid artery stenting is widely performed for extracranial carotid artery stenosis. In-stent thrombosis is a rare but potentially devastating complication. We present a case of acute in-stent thrombosis immediately following stent insertion and post-balloon dilatation in a 64-year-old male. Thrombosis was successfully treated by intravenous tirofiban, a glycoprotein IIb/IIIa receptor ...

This paper reports on the early and midterm results of endovascular treatment of acute carotid artery dissections, its specific problems, and its limitations. We encountered seven patients with symptomatic extracranial carotid artery dissection, three cases of which occurred after carotid endarterectomy, two after carotid angioplasty and stenting, and two after ...

"StentBoost" is a new angiographic technique that allows improved angiographic visualization of stents deployed in coronary arteries, by enhancing the X-ray focus of the region where the stent is placed. Using this technique we were able to assess the deformation and the expansion of a stent deployed to treat a ...

BACKGROUND: It is not known whether overexpansion modifies stent recoil, symmetric distribution of struts, and neointimal hyperplasia. OBJECTIVES: The objectives were (a) to evaluate whether stent overexpansion modifies the geometric configuration of the stent in the arterial wall, (b) to determine the relationship between overexpansion and stent recoil, and (c) ...

BACKGROUND: The stenting of aorto-ostial lesions in the native coronary circulation, renal arteries, and saphenous vein grafts is technically challenging. METHODS: We report the first in the world use of the Ostial Protrade mark, a novel nitinol-based device, utilized in conjunction with standard stenting techniques to assist in the precise ...

There is a general lack of quantitative understanding about how specific design features of endovascular stents (struts and mesh design, porosity) affect the hemodynamics in intracranial aneurysms. To shed light on this issue, we studied two commercial high-porosity stents (Tristar stent and Wallstent) in aneurysm models of varying vessel curvature ...

We report a new technique for treatment of tracheomalacia or tracheal compression caused by the innominate artery, utilized in two patients with neuromuscular disorders. Both cases developed a chest deformity in the setting of severe scoliosis. Computed chest tomography and fiberoptic bronchoscopy showed that the cervical trachea was compressed between ...

PURPOSE: To evaluate the collective incidence of, and experience with, aortoenteric fistula after endovascular aortoiliac therapy. MATERIALS AND METHODS: A systematic literature research was performed to identify cases of aortoenteric fistulation after aortic stent-graft procedures or stent implantation. RESULTS: The review revealed 16 cases of aortoenteric fistulation after aortic stent-grafting ...

We report the case of a 61-year-old man who was treated with percutaneous coronary intervention (PCI) for unstable angina. Seven days after the procedure, he voluntary suspended double anti-aggregant therapy and experienced acute coronary thrombotic occlusion. A repeat PCI procedure was undertaken but the stent and the balloon remained entrapped ...

We report a case of restenosis following ostial stenting of the right coronary artery, with protrusion of the stent into the aorta. Despite multiple attempts, no wire could be advanced coaxially inside the stent. The solution was to pass a wire through the struts of the protruding stent and crush ...

A 20-year woman who presented with acute pancreatitis developed a pseudocyst that was successfully drained by endoscopic placement of a stent as a cystogastrostomy. The first stent used went fully into the cyst and was irretrievable. Two years later a computed tomography showed the stent lying anterior to the left ...

Endovascular modalities are being increasingly employed in the treatment of a variety of vascular diseases. With new technologies come novel complications, and one such complication unique to endovascular surgery is stent fracture. We present two cases of stent fracture following stenting of the superior mesenteric artery and discuss possible causes ...

A 69-year-old woman underwent percutaneous coronary intervention for a severe stenotic lesion in the bifurcation of the mid-left anterior descending artery and first diagonal branch. A single stent was implanted into the left anterior descending artery. After the stent strut was dilated by balloon inflation in the diagonal branch, dissection ...

PURPOSE: To report the diagnostic value of computed tomographic (CT) virtual intravascular endoscopy (VIE) in the assessment of patients with abdominal aortic aneurysm (AAA) treated with fenestrated endovascular grafts. METHODS: Eight patients (7 men; mean age 76 years, range 70-82) with AAAs unsuitable for open surgery or conventional endovascular repair ...