Search Results
Results 601 - 650 of 2722
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Simonton Charles A - - 2007
OBJECTIVES: The purpose of this study was to compare the 9-month clinical outcomes of patients treated with paclitaxel-eluting stents (PES) or sirolimus-eluting stents (SES) for coronary artery stenosis. BACKGROUND: The STENT (Strategic Transcatheter Evaluation of New Therapies) registry is the first multicenter registry in the U.S. to collect long-term outcomes ...
Ormiston John - - 2007
The aim of this first-in-human study was to evaluate the feasibility and safety of the novel AST petal side-access bifurcation stent. Outcomes following percutaneous coronary intervention for bifurcations remain inferior to those of nonbifurcated lesions. Even with drug-eluting stents, restenosis occurs especially at the side-branch (SB) ostium. The petal stent ...
Taylor J D - - 2007
PURPOSE: Stent migration into the right atrium is a potentially fatal complication of stenting in the venous system and is most likely to occur during the treatment of superior vena cava obstruction. Endovascular approaches that can salvage this hazardous situation are described and the keys to successful treatment are highlighted. ...
Kablak-Ziembicka Anna - - 2007
PURPOSE: Subclavian or innominate artery (SIA) stenosis affects up to 5% of patients referred to coronary bypass grafting; it is symptomatic in less than half of these. This study aimed to assess the Doppler ultrasonography (DU) findings in SIA obstruction and patients' follow-up after percutaneous angioplasty (PTA). METHODS: The study ...
Ramcharitar Steve - - 2007
We describe a case of very late stent thrombosis (LST) occurring 18 months after implantation of a Taxus stent in an insulin-dependent diabetic patient after stopping his antiplatelet therapy. Intravascular ultrasound performed during his acute admission showed gross undersizing of his stent that was originally sized with quantitative coronary angiography. ...
Dewilde Willem - - 2007
Karjalainen PP, Porela P, Ylitalo A et al.: Safety and efficacy of combined antiplatelet-warfarin therapy after coronary stenting. Eur. Heart J. 28(6), 726-732 (2007). Chronic oral antithrombotic treatment is necessary in patients with mechanical heart valves and in the majority of patients with atrial fibrillation. Many of these patients also ...
Buszman PaweĊ‚ - - 2007
BACKGROUND: Cobalt-chromium (Co-Cr) stents are a new type of endovascular prostheses characterised by better mechanical properties than traditional stainless steel stents. AIM: To assess the safety and efficacy of percutaneous coronary interventions (PCI) using the new Co-Cr Kos stent (Balton, Poland). METHODS: A total of 59 patients with coronary artery ...
Chen Jack P - - 2007
The introduction of drug-eluting stents (DES), like that of bare-metal stents during the balloon angioplasty era, represents yet another quantum advancement towards overcoming the challenges of restenosis. However, recent concerns over late angiographic stent thrombosis (LAST) have tempered the initial enthusiasm. Although the main time frame of thrombosis is believed ...
Waksman Ron - - 2007
Despite the development and progression of metallic stents, many concerns still remain because of their permanent nature. Although metallic stents are effective in preventing recoil and late restenosis after coronary angioplasty, they continue to have limitations such as stent thrombosis and mismatch of the stent to the vessel size. Thus, ...
Chammas Elie - - 2007
BACKGROUND: Noninvasive assessment of coronary flow reserve in the left anterior descending artery (LAD) by transthoracic Doppler echocardiography (TTDE) has been already validated as a new method for determining the degree of stenosis over the proximal flow. OBJECTIVES: The aim of the study is to determine, by TTDE, the feasibility ...
Barragan P - - 2007
Thirty years after LMCA balloon angioplasty was performed. LMCA percutaneous intervention is still controversial because of its potential complications due to this site and of the good results of LMCA surgery. The poor balloon angioplasty is definitively given up. For the first time, bare stents were used in the middle ...
Vecchio Sabine - - 2007
BACKGROUND: Percutaneous coronary intervention (PCI) has been increasingly employed to treat unprotected left main coronary artery (LMCA) stenosis, with variable success. This strategy has been applied to patients undergoing drug-eluting stent (DES) implantation for unprotected LMCA stenosis. METHODS: From April 2003 to June 2006, 114 consecutive patients with de novo ...
Lee Cheol Whan - - 2007
OBJECTIVES: Acute and long-term results after sirolimus-eluting stent (SES) implantation of proximal left anterior descending coronary artery (LAD) disease were evaluated. BACKGROUND: Although SES has been used increasingly for the treatment of LAD disease, data regarding their safety and efficacy in a real-world population are limited. METHODS: We investigate the ...
Veselka Josef - - 2007
BACKGROUND: Implantation of a carotid artery stent after predilation is a standard approach in the endovascular treatment of carotid artery stenoses. Stenting without predilation may be an alternative approach in a certain subset of patients. The present prospective, single-center registry was designed to evaluate the feasibility and safety of direct ...
Fujii Noriyuki - - 2007
BACKGROUND: In the era of drug-eluting stents, percutaneous coronary intervention (PCI) has been considered an established therapeutic modality for patients with coronary artery disease (CAD). However, little is known about the long-term prognosis. METHODS AND RESULTS: Using data obtained from a single-center registry for cases of first-generation bare metallic stent ...
Jamshidi Peiman - - 2008
Evidence indicates that very late stent thrombosis (>1 year) occurs more frequently in drug-eluting stents than in bare metal stents after discontinuation of clopidogrel. We present a case of an 83 year old man with an LAD in-stent thrombosis 41 months after stenting with a sirolimus-eluting stent in whom clopidogrel ...
Mariano Enrica - - 2008
The purpose of this article is to report complications from a coronary drug-eluting stent lost in the peripheral circulation. We report the case of successful retrieval of a sirolimus coronary stent from a pedal artery in a young patient who underwent coronary angiography for previous anterior myocardial infarction. Recognition of ...
Schömig Albert - - 2007
OBJECTIVES: Our purpose was to make a synthesis of the available evidence on the relative efficacy and safety of 2 drug-eluting stents (DES)--sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES)--in patients with coronary artery disease. BACKGROUND: It is not known whether there are differences in late outcomes between the 2 most ...
Lynch Mark F - - 2007
OBJECTIVES: To describe and analyze a unique computerized system that tracks ureteral stents and automatically sends a notice by e-mail to clinical staff if a stent becomes overdue for removal. METHODS: We have developed an electronic stent register (ESR) and stent extraction reminder facility (SERF) located within our hospital computer ...
Koo Bon-Kwon - - 2007
BACKGROUND: In-vitro and animal experiments have shown that the cyclo-oxygenase 2 inhibitor celecoxib can reduce formation of neointima within stents. We aimed to test whether celecoxib has similar effects in a clinical setting. METHODS: In a randomised two-centre trial, we enrolled 274 patients who had angina pectoris or a positive ...
Halon David A - - 2008
BACKGROUND: Metallic stent struts cause imaging artifacts on multidetector computed tomography (MDCT) which interfere with the assessment of in-stent coronary restenosis. We examined the degree of image distortion of implanted coronary stents on MDCT, comparing different stent types, sizes and orientation. METHODS: We quantified stent dimensions and image distortion of ...
Ichikawa Minoru - - 2008
Treatment of de novo coronary stenosis with sirolimus-eluting stents is associated with very low rates of target lesion revascularization and other major adverse cardiac events in the short-term after implantation, but a definite frequency of late-stent thrombosis (LST) over a long-term follow-up has become evident. One of the predictors of ...
Valgimigli Marco - - 2008
To obtain a quantitative estimate of the overall costs and cost effectiveness ratio of sirolimus-eluting stents (SES) implantation and tirofiban infusion compared to abciximab and bare metal stent (BMS) in patients undergoing primary intervention for acute ST segment elevation myocardial infarction (STEMI). In the attempt to make the unrestricted use ...
Bode, Christoph
The uptake of drug-eluting stents (DES) has been rapid since their introduction at the start of the decade, owing to their clear superiority over bare-metal stents (BMS) in reducing restenosis rates after percutaneous coronary intervention. However, with the widespread use of DES, there has been growing concern that they may ...
Andò Giuseppe - - 2009
In the setting of an acute inferior myocardial infarction undergoing primary stent implantation, we could document a macroscopic embolus moving along the right coronary artery. Coronary embolisation is a well known drawback of percutaneous coronary interventions and dedicated devices can be used in order to minimize myocardial damage. Nonetheless, unexpected ...
Balachandran Kanarath P - - 2008
BACKGROUND: The safety and efficacy of direct coronary artery stenting without predilatation using drug eluting stents has not been firmly established. Concerns have been raised that this technique may be associated with increased risk of immediate and short term complications. METHODS: 68 consecutive patients with chronic stable angina and angiographically ...
Varani Elisabetta - - 2007
OBJECTIVES: One hundred and eleven consecutive patients with multivessel coronary artery disease treated with percutaneous coronary intervention with multiple drug-eluting stents were examined to investigate 1-year clinical results and initial and total costs. METHODS: Clinical and procedural characteristics, duration of hospital stay and 12-month follow-up events were considered. Real costs ...
Sardella Gennaro - - 2007
Drug-eluting stents (DES) present a slightly higher incidence of stent thrombosis compared to bare metal stents and some cases of DES thrombosis are described in the literature. Therefore, there is consensus in recommending treatment with clopidogrel for at least 6 months in addition to life-long aspirin administration. We describe a ...
Ruchin P E - - 2007
BACKGROUND: Randomized trials in selected patient populations have demonstrated dramatic reductions in the incidence of in-stent restenosis (ISR) following implantation of paclitaxel-eluting (PE) coronary stents compared with bare metal stents in native coronary disease. The clinical outcome following implantation of PE stents for saphenous vein graft (SVG) stenosis is largely ...
Störger Hans - - 2007
Perforation or rupture of a coronary artery with subsequent pericardial effusion and cardiac tamponade is a potentially life-threatening complication of percutaneous coronary intervention (PCI). Several emergency treatment strategies exist to close the perforation including reversal of anticoagulation, prolonged balloon inflation, implantation of stent grafts, local injection of thrombogenic molecules, placement ...
Raamachandran J - - 2007
Intravascular stents are metallic scaffolding structures deployed in the stenotic arteries to restore the lumen for the blood flow to the down stream tissues. Most stents are balloon expandable and are deployed from its crimped state through a balloon catheter. The efficacy of the stenting procedure mainly depends on the ...
Head Diane E - - 2007
Drug-eluting stents were introduced into clinical practice to decrease coronary stent restenosis rates. Though remarkably effective in reducing this complication, recent data reveal that drug-eluting stents pose a significant risk for late stent thrombosis, an event strongly correlated with discontinuation of anti-platelet therapy. Because anti-platelet agents are often discontinued perioperatively, ...
Hwang Juey-Jen - - 2007
BACKGROUND/PURPOSE: Drug eluting stents (DES) have been shown to reduce in-stent restenosis rate and target vessel revascularization in large clinical trials. However, the safety and efficacy of DES use in the Taiwanese population has not been reported. We designed this trial to analyze the clinical results in patients using DES ...
Kaluski Edo - - 2007
M-Guard is an ultra-thin polymer mesh sleeve attached to the external stent surface. It is designed to minimize distal embolization during coronary, renal, carotid and vein graft stenting. The polymer net could also serve as a platform for more uniform drug delivery. AIM: To evaluate coronary M-Guard stent deliverability and ...
Sheiban Imad - - 2007
OBJECTIVE: One of the drug-eluting stents that have been introduced into clinical practice is the paclitaxel-eluting stent (PES). Several randomised, controlled clinical trials have already been conducted to evaluate the safety and efficacy of this stent, but data regarding clinical practice are still lacking. The aim of this study was ...
Mori Shumpei - - 2007
Calcified lesions are a cause of stent underexpansion, which significantly increases the subsequent risks of restenosis and stent thrombosis, even when drug-eluting stents are used. In this report, we describe how a novel balloon catheter, the SafeCut Dual Wire percutaneous transluminal coronary angioplasty catheter, enabled adequate dilatation in a calcified ...
Sianos Georgios - - 2007
OBJECTIVES: This study sought to investigate the impact of thrombus burden on the clinical outcome and angiographic infarct-related artery stent thrombosis (IRA-ST) in patients routinely treated with drug-eluting stent (DES) implantation for ST-segment elevation myocardial infarction (STEMI). BACKGROUND: There are limited data for the safety and effectiveness of DES in ...
Chassot P-G - - 2007
Recent clinical data show that the risk of coronary thrombosis after antiplatelet drugs withdrawal is much higher than that of surgical bleeding if they are continued. In secondary prevention, aspirin is a lifelong therapy and should never be stopped. Clopidogrel is regarded as mandatory until the coronary stents are fully ...
Kotooka Norihiko - - 2008
Inflammation in the injured vessel wall plays an essential role in the mechanism of restenosis. Pentraxin3 (PTX3) is synthesized at the inflammatory site in response to primary inflammatory stimuli. To establish the clinical significance of plasma PTX3 levels in the pathophysiology of inflammation in the injured vessels, we serially measured ...
Hong Young Joon - - 2007
We are aware of no studies of peri-stent disease progression or luminal compromise in saphenous vein graft (SVG) lesions. We used serial intravascular ultrasound (IVUS) to assess disease progression in peri-stent saphenous vein bypass graft reference segments. We studied 37 peri-stent SVG reference segments in 21 patients; 16 were proximal ...
Kang Woong Chol - - 2007
Although instent restenosis after implantation of bare-metal stent has been manifested as a benign clinical presentation, some studies reported that acute coronary syndrome could be developed as a result of ruptured ISR. However, little evidence exists concerning acuity of minimal to moderate stenotic lesion that is not severe enough to ...
Gasior Mariusz - - 2007
Due to recent advances in stent design, stenting without balloon predilation (direct stenting) has become more extensively used in patients with acute myocardial infarction (AMI). We performed a randomized study with broad inclusion criteria and early randomization after presentation to compare direct stenting with stenting after balloon predilation in patients ...
Bose Rahul - - 2007
Several trials have shown the effectiveness of drug-eluting stents (DES) in reducing restenosis. Acute ST-elevation myocardial infarction (STEMI) has been an exclusion criterion in most trials evaluating the safety and efficacy of DES. There is recent randomized trial data evaluating the use and safety of DES for acute myocardial infarction. ...
Van Belle E - - 2007
Within the last 6 years, it has been demonstrated that drug-eluting stents (DES) reduce significantly angiographic and clinical restenosis after percutaneous coronary interventions. These results are consistent across several clinical randomized controlled trials comparing these new devices with bare metallic stents (BMS), which themselves have already markedly improved the results ...
Bergmann Lars - - 2007
OBJECTIVE: This report suggests that impedance aggregometry can be helpful to assess optimum time for and minimize the risk of catheter removal during double antiplatelet therapy. CASE REPORT: A 52-year-old patient undergoing cystectomy during combined general and epidural anesthesia suffered an acute myocardial infarction, and required coronary artery stenting and ...
Burzotta Francesco - - 2007
OBJECTIVES: To describe a novel modification of the T-stenting technique and to report the bench test as well as the first clinical results obtained. BACKGROUND: The best technique to treat bifurcated coronary lesions has not been defined. METHODS: This novel modification of the T-stenting technique is based, after stenting of ...
Díaz de la Llera Luis-S - - 2007
BACKGROUND: Sirolimus-eluting stents have been shown to decrease restenosis and reintervention as compared with standard stents. We evaluated the use of sirolimus-eluting stents in primary percutaneous coronary intervention for acute myocardial infarction with ST-segment elevation. METHODS: We randomly assigned 120 patients to compare sirolimus-eluting stents with uncoated stents in primary ...
Makris Demosthenes - - 2007
PURPOSE OF REVIEW: The present paper reviews the recent literature on the management of malignant large airway obstruction using tracheobronchial stenting and airway replacement by aortic allografts. RECENT FINDINGS: Airway stenting is a valuable adjunct to therapeutic bronchoscopy to relieve malignant airway obstruction. Over 80% of patients with obstructing lesions ...
Hamid Huda - - 2007
Over the last three decades, percutaneous coronary intervention (PCI) technology has revolutionized the field of cardiology. PCI began in the form of balloon angioplasty, and was followed by coronary stenting. In-Stent restenosis is the main limitation of coronary stenting, and has been delayed to some extent by the development of ...
Papafaklis Michail I - - 2007
We report a patient with coronary dilatation 10 weeks after paclitaxel-eluting stent implantation in the right coronary artery (RCA). Coronary angiography demonstrated a double-locular lumen dilatation in the body of the stented segment of the RCA, and intravascular ultrasound interrogation revealed the corresponding region with evidence of tissue regression behind ...
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