It is not clear whether the thin struts and different alloy of a cobalt chromium stent will cause greater acute stent recoil compared to conventional stainless steel stents. We used postintervention intravascular ultrasound (IVUS) examinations to study 99 patients with 116 stented lesions: 61 Xience/Promus stents (cobalt chromium stent group) ...

AIMS: Revascularisation with Titanium-Nitride-Oxide (TiNOX) coated stents is safe and effective in patients with de novo native coronary artery lesions. In the TiNOX trial there was a reduction in restenosis and major adverse cardiac events as compared with stainless steel stents of otherwise identical design. The purpose of the present ...

Airway complications (AC) are considered a serious cause of morbidity after lung transplantation (LT). Mechanical dilatation, laser vaporization, and silicone stent placement usually solve it. However, the use of self-expandable metallic stents (SENS) may be indicated in selected cases. Ten lung transplant recipients with AC were treated with SENS. Six ...

We report on the case of an 83-year-old hemiplegic female patient presenting with post-traumatic pseudoaneurysm of the supracoeliac aorta, treated with 38 mm x 100 mm Talent Endoluminal Stent-Graft (Medtronic Inc., Santa Rosa, CA) using local anaesthesia. The patient was discharged on day 3 and the 8 month follow-up was ...

ICAD with hemodynamic insufficiency may present with either fulminant infarct or with progressive neurologic deterioration. The purpose of this study was to evaluate the safety and efficacy of emergent self-expanding stent placement for acute intracranial or extracranial ICAD with significant hemodynamic insufficiency. Eight patients (7 men and 1 woman; age ...

The incidence of post-TIPS hepatic encephalopathy (HE) could be reduced by using stents with a small diameter. The aim of this study was to compare the incidence of HE and the clinical efficacy of TIPS created with 8- or 10-mm PTFE-covered stents. Consecutive cirrhotics submitted to TIPS for variceal bleeding ...

Morphologic changes of small-sized post-stent malapposition have not been sufficiently evaluated. We investigated serial changes of minimal post-stent malapposition with a follow-up optical coherence tomography (OCT) study. Post-stent OCT and intravascular ultrasound (IVUS) and follow-up OCT were performed in 26 patients with minimal post-stent malapposition. Serial changes of number and ...

Coating of stents has been shown to minimize the interactions between platelets, stent surface and vascular response following stent implantation. The aim of our study was to compare the tacrolimus-eluting carbon-coated JANUS(®) stent with sirolimus-eluting CYPHER(®) stent for the prevention of symptom-driven clinical end points in a real world clinical ...

A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was: in patients with an acute type A dissection (TAAD) is a frozen elephant trunk in addition to standard aortic dissection repair advantageous in terms of improved long-term mortality and closure of the ...

This study describes three techniques of stent placement at the iliocaval confluence for chronic nonmalignant obstruction and its stent-related outcome. From 1997 to 2008, 115 patients (230 limbs) underwent bilateral stenting for iliocaval obstruction. All limbs were CEAP classified using clinical examination and duplex ultrasound study. Three techniques were compared: ...

While much attention has been devoted toward treatment paradigms for idiopathic axillo-subclavian vein thrombosis (ASVT), little has focused on long-term durability of aggressive treatment and its associated functional outcomes. The purpose of this study was to review our own surgical therapeutic algorithm and its associated durability and functional outcomes. All ...

BACKGROUND: Self-expandable metallic stents (SEMSs) provide effective palliation of malignant pyloric obstruction in patients with inoperable gastric cancer. OBJECTIVE: To compare the effectiveness and side effects of covered and uncovered SEMSs for the palliation of malignant pyloric obstruction. DESIGN: Prospective, randomized, single-center study. SETTING: Tertiary-care cancer center hospital. PATIENTS: This ...

Using serial volumetric intravascular ultrasonography, we evaluated the predictors of late intimal hyperplasia (IH) increases after drug-eluting stent implantation. All eligible patients who underwent 6-month angiography without visual restenosis were requested to undergo a 2-year follow-up examination. Complete serial (after stenting and early [6-month], and late [2-year] follow-up) angiographic and ...

BACKGROUND: Late stent thrombosis (LST) is still concerned by interventional cardiologists in daily clinical practice. This study aimed to compare the incidence of LST after implantation of different drug-eluting stents (DES) in coronary heart disease (CHD) patients in the real world. METHODS: From December 2001 to February 2009, a total ...

To assess the fate of incomplete stent apposition (ISA) after deployment of sirolimus-eluting stents (SESs). Thirty-two patients having intravascular ultrasound (IVUS)-guided PCI with SESs underwent assessment of stent deployment with quantitative coronary angiography, IVUS, and optical coherence tomography (OCT) pre-procedure, post-procedure, and at 10 months follow-up. Incomplete stent apposition was ...

INTRODUCTION: Double-J stents revolutionized the minimally invasive management of ureteral strictures, but have significant morbidity. We compare stent-related symptoms and quality of life between a conventional Double-J stent and a novel thermoexpandable metal segmental ureteral stent (Memokath) in patients with ureteral strictures. MATERIALS AND METHODS: Seventy patients with a conventional ...

AIM: Midterm technical and clinical evaluation of stent angioplasty with drug-eluting stents in infrapopliteal lesions in patients with critical limb ischemia (CLI). METHODS: Percutaneous stent angioplasty was performed in 128 limbs in 114 patients presenting with 320 vascular lesions. Lesions with up to 6 cm in length and at least ...

AIMS: The ABSORB Cohort A clinical study has shown the feasibility and safety of the fully bioabsorbable everolimus-eluting structure (BVS, revision 1.0). However, the study also demonstrated somewhat higher acute and late recoil with the BVS structure compared to metallic drug eluting stents. Based on these clinical observations, modifications to ...

AIM: Self-expandable metallic stents are widely used for palliation of malignant gastric outlet obstruction (GOO), but clinical outcomes of different stents have not been compared. Here, we compared outcomes in patients with a GOO receiving either an Ultraflex (UF) or a Niti-S (NS) stent. METHODS: Prospective outcomes in 53 patients ...

The aims of this study were to evaluate both the efficacy of stent placement for treating inferior vena cava (IVC) stenosis and the patency of hepatic veins (HVs) following IVC stent placement. Fourteen hepatic transplant recipients underwent stent placement to treat IVC stenosis. The median interval between transplantation and stent ...

BACKGROUND: Endoscopic stent therapy is routinely used to treat postoperative bile duct strictures. However, no studies have detailed long-term follow-up evaluation for more than 10 years. METHODS: This study enrolled 22 consecutive patients with a diagnosis of postoperative bile duct strictures from 1987 to 2006. Cases involving digestive tract reconstruction ...

Stents have been reported as an option for improvement of the recanalization rate in AIS. The authors have also used intracranial stents in failed cases of IAT with pharmacologic and mechanical methods since 2004. We retrospectively reviewed our cases of intracranial stent use for IAT of AIS for recanalization and ...

This study aimed to compare major hemorrhage rates among patients receiving warfarin, acetylsalicylic acid (ASA), and clopidogrel to those receiving ASA and clopidogrel following percutaneous coronary intervention with stent implantation. This retrospective cohort study identified patients with stents implanted between September 1, 2003 and December 31, 2006. Patients treated with ...

OBJECTIVE: The objective of this study was to compare the results of antegrade (AG) ureteral stenting with retrograde (RG) stenting during laparoscopic dismembered pyeloplasty. MATERIALS AND METHODS: Between October 2003 and April 2007, a case series of 47 laparoscopic dismembered pyeloplasties were done by three surgeons of equal expertise in ...

OBJECTIVES: Determine the long-term outcomes of branch pulmonary artery (PA) stents. BACKGROUND: PA stents in congenital heart disease effectively relieve stenoses in the short-term. Published long-term data are limited. METHODS: Patients enrolled in an FDA IDE protocol from 1989-92 were included. Clinical follow-up and catheterization data were evaluated. Patients were ...

Diabetes mellitus (DM) accounts for >25% of all percutaneous coronary interventions. In patients with DM, drug-eluting stent implantation is associated with a reduced risk of restenosis and target lesion revascularization. However, concern has been raised about the incidence of late and very late stent thrombosis and the increased mortality rate, ...

Various types of device-specific adverse events can occur during deployment of thoracic stent grafts due to the high flow rate and severe aortic angulation that is often encountered in the thoracic aorta. This study assessed the incidence, etiology, and overall effect of misaligned deployment of the Talent Thoracic Stent Graft ...

Partially covered metal stents have been extensively used for palliation of obstructive jaundice in malignant distal biliary strictures and can be removed in cases of malfunction or need for tissue diagnosis. We investigated independent predictors of mortality in patients undergoing partially covered metal stents revision (i.e., removal and replacement). Patients ...

To evaluate the efficacy of stent placement in the treatment of portal vein (PV) stenosis or occlusion in living donor liver transplant (LDLT) recipients, 468 LDLT records were reviewed. Sixteen (10 PV occlusions and 6 stenoses) recipients (age range, 8 months-59 years) were referred for possible interventional angioplasty (dilatation and/or ...

The present study compares the efficacy of a self-expanding metallic stent (SEMS, diameter of 30 mm) and pneumatic dilation for the long-term clinical treatment of achalasia. A total of 155 patients diagnosed with achalasia were allocated for pneumatic dilation (n= 80, group A) or a temporary, 30-mm diameter SEMS (n= ...

INTRODUCTION: The discussion on the use of protection devices (PDs) in carotid artery stenting (CAS) is gaining an increasing role in lowering the periprocedural complication rates. While many reviews and reports with retrospective data analysis do promote the use of PDs the most recent multi-centre trials are showing advantages for ...

The diagnosis of microbial ureteral stent colonisation (MUSC) is difficult, since routine diagnostic techniques do not accurately detect microorganisms embedded in biofilms. New methods may improve diagnostic yield and understanding the pathophysiology of MUSC. The aim of the present study was to evaluate the potential of sonication in the detection ...

OBJECTIVES: The standard approach to benign esophageal perforations consists of conservative treatment or surgery. In this study, we investigated the efficacy of short-term stent placement for nonmalignant esophageal perforations.METHODS: This is a prospective single-center study of patients with benign esophageal perforations in whom a removable self-expandable stent was placed. Data ...

BACKGROUND: Self-expandable metal stents (SEMS) are an accepted palliation for malignant colorectal obstruction. Outcomes of stent insertion solely in older patients are unknown. OBJECTIVE: To compare outcomes of SEMS insertion for malignant colorectal disease, in older versus younger patients. METHODS: Forty-three patients were retrospectively identified as having undergone SEMS insertion ...

BACKGROUND: Therapeutic approaches for tracheal stenosis caused by the formation of exuberant granulation tissues usually include electrocautery, mechanical dilation, laser therapy, argon plasma coagulation (APC), cryotherapy and stent placement. However, restenosis after stent insertion remains a significant limitation. We examined the efficacy of three different approaches, including induction of mechanical ...

OBJECT: Acute revascularization has been associated with improved stroke outcomes. The Prolyse in Acute Cerebral Thromboembolism (PROACT II) trial achieved recanalization rates of 66%. The Multi Mechanical Embolus Removal in Cerebral Ischemia (Multi MERCI) trial achieved recanalization in 70% of patients. However, these interventional tools are not always successful. The ...

PURPOSE: To report the experience of carotid artery angioplasty with stenting (CAS) by cardiologists (CV) and neuroradiologists (NR) in an area with less incidence of extracranial artery stenosis. METHODS: From 1999 to 2008, 210 patients with 231 stents were collected by claim records from the administrative office and reviewed by ...

Self-expandable metal stents (SEMSs) are used for colonic obstruction palliatively and preoperatively. Determine long-term efficacy, incidence of complications, and risk factors of SEMS placement for colonic obstruction. Retrospective review of SEMSs placed for malignant colorectal obstruction from 1999 to 2008. Tertiary-care center. This study involved 168 patients who underwent SEMS ...

INTRODUCTION: The management of patients with upper urinary tract obstruction who are not candidates for definitive reconstruction often presents a challenge. We report our initial experience with the Resonance (Cook Urological, Spencer, IN) metallic ureteral stent for the management of benign ureteral obstruction and present a comparative cost analysis of ...

The aim of our retrospective study was to determine the effectiveness and safety of self-expandable metal stents in patients presenting with large bowel obstruction secondary to colorectal cancer (regardless of the tumour site), in a district general hospital setting. All patients who had endoscopic colonic stents insertion for obstructive colorectal ...

Despite advances in polymer and drug technology, the underlying stent platform remains a key determinant of clinical outcome. A clear understanding of stent design and the differences between various stent platforms are of increasing importance for the interventional cardiologist. Reduction in stent strut thickness has been associated with improved stent ...

PURPOSE: To compare success rates of intubation for 2 versus 5 months in congenital nasolacrimal duct obstruction in children between 15 and 30 months of age. METHODS: This prospective, randomized study evaluated drainage function in 145 eyes of children aged between 15 and 30 months and treated for congenital nasolacrimal ...

The optimal endoscopic protocol for treating postorthotopic liver transplantation (OLT) anastomotic biliary strictures (ABSs) has not been established. To review the technique and outcomes of endoscopic retrograde cholangiopancreatography (ERCP) with maximal stenting for post-OLT ABSs at our institution. Retrospective study. Tertiary-care center. Eighty-three patients with a diagnosis of ABS. ERCP ...

Fibrosing mediastinitis is a rare disorder characterized by an excessive fibrotic reaction in the mediastinum which can result in compromise of mediastinal structures. We sought to evaluate short- and midterm results of intravascular thoracic vessel stent placement for patients with fibrosing mediastinitis. We reviewed all records of fibrosing mediastinitis patients ...

PURPOSE: We assess the safety, efficacy, and cost of the novel long-term indwelling thermo-expandable Memokath ureteral stent for the management of malignant and benign ureteral strictures. MATERIALS AND METHODS: Since October 2004, we treated 73 patients (34 men), ages 23 to 84 years (mean 57.7) with 86 ureteral strictures (13 ...

BACKGROUND: Intestinal anastomosis is a major technical component of gastrointestinal procedures. We have developed a new procedure of colonic anastomosis with a degradable stent. This article evaluates this procedure. METHODS: Forty pigs were assigned randomly to a stent group (n = 20) and a control group (n = 20). A ...

Although self-expandable metallic stent (SEMS) has a longer patency than plastic stent (PS) for malignant biliary obstruction, stent occlusion can occur and drainage has to be reestablished in a patient with expected long survival. However, the choices are still controversial among restenting with SEMS, PS, and percutaneous transhepatic biliary drainage ...

Curative resection of pancreatic and biliary malignancies is rare. Most tumors are inoperable at presentation, and palliation of jaundice often is the goal. Biliary decompression can be achieved by surgical diversion or endoscopic biliary stents. This study aimed to compare clinical outcomes between surgical bypass and endoscopic uncovered nitinol stents ...

OBJECTIVES: To compare the very long-term clinical outcomes of bifurcation lesions using the crush and the simultaneous kissing stent (SKS) techniques. BACKGROUND: A variety of two-stent techniques have been used to treat coronary artery bifurcation lesions in the drug-eluting stent era, but the long-term clinical outcome of these approaches is ...

BACKGROUND: Refractory benign esophageal strictures (RBES) are defined as those that persist structurally and symptomatically after repeated dilation sessions. Small series have reported favorable outcomes after placement and subsequent removal of Polyflex self-expanding plastic stents (SEPS). AIMS: To characterize the outcomes after Polyflex stent placement in patients with RBES. METHODS: ...