• Methods 241 patients with carotid artery stenosis treated with stenting were analyzed retrospectively to identify patients who had restenosis after stenting. (bmj.com)
  • A higher percentage of preoperative carotid stenosis was associated with higher odds of restenosis in univariate analysis (p=0.04, OR stenosis ≥80%=5.7). (bmj.com)
  • Patients with cardiovascular disease, patients who had a CVA prior to stenting, and patients with higher percentages of preoperative stenosis had higher odds of restenosis. (bmj.com)
  • Restenosis is the recurrence of stenosis after a procedure. (wikipedia.org)
  • Ultrasound diagnosis of carotid artery stenosis and occlusion", Hidehiro Takekawa et al. (wikipedia.org)
  • A partial blockage is called carotid artery stenosis (narrowing). (medlineplus.gov)
  • Gruntzig, A. (1978) Trans Luminal Dilatation of Coronary-Artery Stenosis. (scirp.org)
  • Superficial femoral artery stenosis causing claudication. (medscape.com)
  • Left subclavian artery stenosis. (medscape.com)
  • Left renal artery stenosis. (medscape.com)
  • Percutaneous transluminal angioplasty of superficial femoral artery stenosis, performed with a long balloon via a contralateral femoral approach. (medscape.com)
  • ISR was defined as a diameter stenosis of 50% within a coronary stent. (summit-tctap.com)
  • Carotid stenosis is a narrowing in one or both of the main arteries to your brain and can result in a stroke. (valleymed.org)
  • There was 80% stenosis of the proximal left anterior descending (LAD) coronary artery and total occlusion in the middle segment of the LAD. (salesandmarketingnetwork.com)
  • The distal segment of the right coronary artery showed 50% stenosis. (salesandmarketingnetwork.com)
  • Currently, the VIABAHN Device is indicated for use in superficial femoral artery (SFA) lesions, iliac lesions, in-stent restenosis of SFA lesions and in stenosis or thrombotic occlusion at the venous anastomosis of synthetic arteriovenous access grafts for hemodialysis. (goremedical.com)
  • Renal artery stenosis (RAS) is a known cause of hypertension and ischemic nephropathy. (biomedcentral.com)
  • Renal artery stenosis due to atherosclerotic changes of the renal arteries has become a serious concern as a cause of hypertension and renal ischemia, resulting frequently in end-stage renal failure [ 1 , 2 ]. (biomedcentral.com)
  • The study has been carried out prospectively on 46 patients affected by hemodynamically significant atherosclerotic renal artery stenosis, detected by Magnetic Resonance Angiography or Selective Digital Angiography. (biomedcentral.com)
  • For half-a-century, the two-dimensional shadow images of the coronary arteries, as served up by the 'gold standard' of selective coronary angiography, have informed cardiologists as to what a stenosis is, how severe it is, where it stops, starts, what it's composed of and, perhaps, how to best treat it. (ptca.org)
  • In later years of life, vertebral artery stenosis is a common arteriographic finding and dizziness is a common complaint. (medscape.com)
  • A balloon-tipped catheter, guided by fluoroscopy or intravascular ultrasonography, is aligned within the stenosis, then inflated to disrupt the atherosclerotic plaque and dilate the artery. (msdmanuals.com)
  • The clinical manifestations reflect the arteries involved and most commonly include hypertension caused by renal-artery stenosis (RAS) or strokes from carotid artery disease. (medscape.com)
  • CTA with maximum intensity projection (MIP) and quantitative measurement of stenosis is an accurate noninvasive technique for diagnosing fibromuscular dysplasia/stenosis of the visceral arteries, regardless of the etiology. (medscape.com)
  • The use of this product carries the same risks associated with coronary artery stent implantation procedures, which include subacute and late vessel thrombosis, vascular complications and/or bleeding events. (medtronic.com)
  • Stent thrombosis is a low-frequency event that is frequently associated with MI or death. (medtronic.com)
  • The use of a drug-eluting stent (DES) outside of the labeled indications, including use in patients with more tortuous anatomy, may have an increased risk of adverse events, including stent thrombosis, stent embolization, myocardial infarction (MI), or death. (medtronic.com)
  • The concern of stent thrombosis still an issue and dual antiplatlets therapy (DAPT) is mandatory for variable time ranging from one month to one year. (scirp.org)
  • The other is the formation of clots inside the stent, called stent thrombosis. (harvard.edu)
  • As a result, blood clots could form on the stent (stent thrombosis). (harvard.edu)
  • Stent thrombosis can happen at any time, but most clots form within the first month of receiving a stent. (harvard.edu)
  • Skipping or stopping the anti-clotting medications is the biggest risk factor for stent thrombosis. (harvard.edu)
  • Unfortunately 1/3 of patients with bare metal stents (BMS) suffer from restenosis of the coronary artery, and about 1-2% of patients with DES suffer from in-stent thrombosis, leading to significant morbidity and mortality. (umass.edu)
  • My research explores how blood flow perturbations caused by the stent design contribute to in-stent restenosis and thrombosis, studying the impact of the fluid forces on blood components and endothelial cells. (umass.edu)
  • however, the safety of DES has raised considerable concerns due to an increased risk of sudden stent occlusion by platelet aggregates (or thrombosis) as well as the need for prolonged anti-platelet therapy, which poses bleeding risks, especially in the elderly population. (ca.gov)
  • Specifically, intravascular imaging should be considered an "essential adjunct to angiography" for left main, proximal LAD, in-stent restenosis, stent thrombosis, calcified coronary arteries, and CTOs, or any other scenario where angiography fails to shed light on the coronary anatomy. (tctmd.com)
  • At the beginning of the stent era, problems began to arise with excessive restenosis (re-blocking of the artery) and stent thrombosis (blood clotting inside or around the area of the stent). (ptca.org)
  • Various anticoagulation and antiplatelet regimens are used during and after PCI to reduce the incidence of thrombosis at the site of balloon dilation and stent placement. (msdmanuals.com)
  • We have decided to make no changes in coverage of patient groups for percutaneous transluminal angioplasty (PTA) of the carotid artery concurrent with stenting (Medicare NCD Manual 20.7B3 and B). We have decided to retain our existing coverage policy with a slight revision to the language regarding embolic protection devices. (cms.gov)
  • Carotid artery angioplasty and stenting (CAS) is done using a small surgical cut. (medlineplus.gov)
  • Carotid artery angioplasty and stenting may help lower your chance of having a stroke. (medlineplus.gov)
  • 1987) Intravascular Stents to Prevent Occlusion and Restenosis after Transluminal Angioplasty. (scirp.org)
  • 1994) A Randomized Comparison of Coronary-Stent Placement and Balloon Angioplasty in the Treatment of Coronary Artery Disease. (scirp.org)
  • 1994) A Comparison of Balloon-Expandable-Stent Implantation with Balloon Angioplasty in Patients with Coronary Artery Disease. (scirp.org)
  • Approximate 50% reductions in the rates of target lesion restenosis and target vessel myocardial infarction (MI) accounted for the superior findings with the AGENT DCB over conventional balloon angioplasty. (medscape.com)
  • There was no stent rethrombosis with the DCB vs 3.9% with the conventional balloon angioplasty. (medscape.com)
  • In-stent restenosis (ISR) is one of the main complications in patients undergoing percutaneous coronary angioplasty, and microRNAs participate in the contractile-to-synthetic phenotypic switch of vascular smooth muscle cells, a hallmark of restenosis development. (hindawi.com)
  • 142 patients with coronary artery disease undergoing successful angioplasty and a follow-up angiography were included. (hindawi.com)
  • Restenosis results from a reduced diameter of the lumen of a blood vessel following percutaneous coronary angioplasty (PCA). (hindawi.com)
  • Stents are the mesh tubes that prevent arterial collapse after balloon angioplasty, the principal treatment for atherosclerosis: A balloon is inserted into an artery to clear away plaque and is removed. (technologyreview.com)
  • Stents revolutionized the treatment of atherosclerosis in coronary and peripheral arteries, but they did little to address one of the chief problems with balloon angioplasty. (technologyreview.com)
  • Because it destroys rather than compresses the plaque, the combination technique will have a lower restenosis rate, or re-narrowing of the artery, compared to balloon angioplasty or stenting. (scienceblog.com)
  • Angioplasty and stenting are used to open the obstructed coronary artery and maintain the arterial patency. (ca.gov)
  • In US, ~1.3 million angioplasty and stenting procedures are performed every year to treat coronary artery disease. (ca.gov)
  • This arterial re-narrowing is a major hurdle limiting the success of angioplasty and stenting. (ca.gov)
  • These stem cells are activated when arteries are injured by angioplasty and stenting. (ca.gov)
  • Instead of the classical surgical approach, percutaneous balloon angioplasty or endovascular stenting have recently become accepted procedures in the attempt to revascularize the stenotic kidney and prevent chronic renal insufficiency. (biomedcentral.com)
  • Percutaneous coronary interventions (PCI) include percutaneous transluminal coronary angioplasty (PTCA) with or without stent insertion. (msdmanuals.com)
  • In patients with posterior circulation ischemia secondary to microembolism and appropriate lesions in a vertebral artery, the potential source of the embolus needs to be eliminated regardless of the status of the contralateral vertebral. (medscape.com)
  • Because of the often vague nature of patient presentation, clinicians may be reluctant to pursue a pathologic diagnosis or to recommend treatment for potentially correctable vertebral artery lesions. (medscape.com)
  • The Resolute Integrity Zotarolimus-Eluting Coronary Stent System is indicated for improving coronary luminal diameters in patients, including those with diabetes mellitus, with symptomatic ischemic heart disease due to de novo lesions of length ≤ 27 mm in native coronary arteries with reference vessel diameters of 2.25 mm to 4.20 mm. (medtronic.com)
  • In addition, the Onyx Frontierâ„¢ zotarolimus-eluting coronary stent system is indicated for treating de novo chronic total occlusions and non-left main bifurcation lesions utilizing the provisional bifurcation stenting technique. (medtronic.com)
  • Uses of balloon catheters or BMS for the treatment of coronary artery lesions shows good short-term results but long-term follow up revealed restenosis in up to 20%-30% of patients. (scirp.org)
  • The Rotarexâ„¢ Atherectomy System is designed to efficiently remove both plaque and thrombus by utilizing three distinct mechanisms of action to treat PAD lesions including in-stent restenosis. (bd.com)
  • The new 200mm and 150mm Stellarex 0.035" low-dose DCBs have received approval from the U.S. Food and Drug Administration (FDA) for the treatment of de novo and restenotic lesions in native superficial femoral or popliteal arteries, both arteries in the upper leg. (researchandmarkets.com)
  • The number of lesions treated with DES to prevent one restenosis ranged from 11 to 47 in various subgroups. (lu.se)
  • The 2.0*20mm and 2.5*20mm balloons were pre-dilated at the lesions of the proximal-distal segment of the anterior descending artery. (salesandmarketingnetwork.com)
  • Wolverine (3.5*10mm) cutting balloon was used to dilate the lesions in the left main coronary artery, and Bingo (3.5*20mm) drug balloon was used to expand and release drugs. (salesandmarketingnetwork.com)
  • Among 1,639 patients undergoing complex PCI, which included the treatment of true bifurcations, chronic total occlusions (CTOs), and unprotected left main coronary artery disease, among other lesions, intravascular imaging with either OCT or IVUS lowered the risk of cardiac death, target-vessel MI, or clinically driven target-lesion revascularization by 36% compared with angiography after a median follow-up of 2.1 years. (tctmd.com)
  • Stents medicated with sirolimus have shown promise in the prevention of restenosis after balloon dilation of simple coronary lesions. (wordinfo.info)
  • By "simple" coronary lesions is meant, for example, a short area of narrowing in one coronary artery. (wordinfo.info)
  • The clinical trial compared the sirolimus stent with a standard stent in patients with complex coronary lesions. (wordinfo.info)
  • The researchers concluded with precision that: "Sirolimus-eluting stents are better than bare-metal stents for treatment of single long atherosclerotic lesions in a coronary vessel smaller than three millimeters in diameter. (wordinfo.info)
  • Stents are used frequently for acute myocardial infarction, ostial or left main disease, chronic total occlusions, and bifurcation lesions. (msdmanuals.com)
  • In this case, the lesions involve the main right renal artery and the right accessory renal artery in a 37-year-old man with difficult-to-control hypertension. (medscape.com)
  • Subsequent stent restenosis or occlusion may require repeat catheter-based treatments (including balloon dilatation) of the arterial segment containing the stent. (medtronic.com)
  • The atherosclerotic process may gradually progress to complete occlusion of medium-sized and large arteries. (medscape.com)
  • Alternatively, hemodynamic ischemic symptoms may follow proximal subclavian artery occlusion and the syndrome of subclavian/vertebral artery steal ( subclavian-vertebral steal phenomenon ). (medscape.com)
  • Drug-eluting stents (DES) improved the principles of bare metal stents (BMS) by local drug release to inhibit neointimal growth. (scirp.org)
  • 2009) 5-Year Clinical Outcomes after Sirolimus-Eluting Stent Implantation Insights from a Patient-Level Pooled Analysis of 4 Randomized Trials Comparing Sirolimus-Eluting Stents with Bare-Metal Stents. (scirp.org)
  • Patients who received at least one DES (n = 4754) were compared with those who received only bare metal stents (BMS) (n = 4956) at the index procedure. (lu.se)
  • In 1996, Johnson & Johnson was the undisputed king of bare-metal stents. (technologyreview.com)
  • One medical report focused on the use of sirolimus stents compared with bare-metal stents in long narrowed areas in the coronary arteries. (wordinfo.info)
  • Eight months after the stents were put in, the minimum diameter was significantly greater within sirolimus stents than in the standard bare metal stents. (wordinfo.info)
  • The rate of restenosis was significantly reduced with the sirolimus stents compared with the bare metal stents and at nine months, fewer patients with sirolimus stents had major adverse cardiac events than did the controlled group. (wordinfo.info)
  • Bare-metal stents (BMS) are made of nickel-titanium alloy. (msdmanuals.com)
  • Today, restenosis in coronary arteries afflicts less than 10 percent of patients thanks to the development of the drug-eluting stent (DES), which slowly releases a drug that inhibits the growth of scar tissue. (technologyreview.com)
  • Our aim in this study was to investigate the relative importance of arterial stretch and deep injury to the late arterial response after stent deployment, using moderate implantation conditions. (bmj.com)
  • Only physicians who have received adequate training should perform implantation of the stent. (medtronic.com)
  • The risks and benefits of the stent implantation should be assessed for patients with a history of severe reaction to contrast agents. (medtronic.com)
  • Guidelines from the European Society of Cardiology and European Association for Cardio-Thoracic Surgery (ESC/EACTS) also recommend IVUS or OCT for selected patients to optimize stent implantation. (tctmd.com)
  • Dual Antiplatelet Therapy Guided by CYP2C19 Polymorphisms after Implantation of Second-Generation Drug-Eluting Stents for Management of Acute Coronary Syndrome. (cdc.gov)
  • When drug-eluting stents (DES) are used outside the specified Indications for Use , patient outcomes may differ from the results observed in the RESOLUTE pivotal clinical trials. (medtronic.com)
  • They also have been investigated in clinical trials to prevent coronary artery in-stent restenosis. (researchandmarkets.com)
  • In-stent restenosis (ISR) is a limitation of percutaneous coronary intervention that has been connected to various clinical and angiographic factors. (summit-tctap.com)
  • Future research planned includes determining the molecular basis for fluid flow-induced differences in endothelial cell migration, optimization of streamlined stent design, and pre-clinical studies of streamlined stents in coronary heart disease animal models. (umass.edu)
  • Optical coherence tomography study of healing characteristics of paclitaxel-eluting balloons vs. everolimus-eluting stents for in-stent restenosis: the SEDUCE (Safety and Efficacy of a Drug elUting balloon in Coronary artery rEstenosis) randomised clinical trial. (umassmed.edu)
  • Stent induced hemodynamic changes in the coronary arteries are associated with higher risk of adverse clinical outcome. (researchgate.net)
  • Impact of CYP2C19 polymorphism on clinical outcome following coronary stenting is more important in non-diabetic than diabetic patients. (cdc.gov)
  • CYP2C19 loss-of-function alleles are not associated with clinical outcome of clopidogrel therapy in patients treated with newer-generation drug-eluting stents. (cdc.gov)
  • pharmacological stents were implanted in almost all cases, and angiographic and clinical success rates were high. (bvsalud.org)
  • 4 High pressure deployment, wide strut openings, asymmetrical deployment, and increased balloon compliance may also contribute to in-stent restenosis or experimental neointima formation. (bmj.com)
  • DCBs are also used to treat in-stent restenosis due to scar tissue proliferation inside stents, which can cause a vessel to occlude. (researchandmarkets.com)
  • We report on an approach for validation of an in silico 3D model of in-stent restenosis in porcine coronary arteries and illustrate this approach by comparing the modelling results to in vivo data for 14 and 28 days post-stenting. (springer.com)
  • Left Anterior Descending was the commonest coronary artery that developed In-Stent Restenosis, followed by Right Coronary Artery and Left Circumflex respectively. (pafmj.org)
  • This multiscale model includes single-scale models for stent deployment, blood flow and tissue growth in the stented vessel, including smooth muscle cell (SMC) proliferation and extracellular matrix (ECM) production. (springer.com)
  • The validation procedure uses data from porcine in vivo experiments, by simulating stent deployment using stent geometry obtained from micro computed tomography (micro-CT) of the stented vessel and directly comparing the simulation results of neointimal growth to histological sections taken at the same locations. (springer.com)
  • For 14 days post-stenting the relative neointimal area, averaged over all vessel sections considered, was 20 ± 3% in vivo and 22 ± 4% in silico . (springer.com)
  • During the stenting procedure, the narrowed artery is damaged by the stent struts being pressed into the vessel wall, as well as by the expanding balloon which is used to distend the artery and deploy the stent. (springer.com)
  • This in turn causes a healing response in the vessel wall, which, if it becomes excessive, can cause a new narrowing of the vessel, or in-stent restenosis (ISR). (springer.com)
  • ISR is associated with excessive damage to the vessel wall and with disturbed flow patterns in the stented vessel, in particular with low values of wall shear stress (WSS). (springer.com)
  • Sixty four percent of the patients (n=32) had Single Vessel Coronary Artery Disease, 14 (28%) had Double Vessel Coronary Artery Disease and 4 (8%) had Tripple Vessel Coronary Artery Disease. (pafmj.org)
  • In all 20 patients, the stent caused a distinct change in the geometry of the parent vessel. (ajnr.org)
  • The primary endpoint was target lesion failure at 1 year, a composite of target lesion restenosis, target vessel-related MI, or cardiac death. (medscape.com)
  • Subgroup analyses of the primary outcome in terms of sex, age, diabetes, vessel size, or single or multiple stent layers all trended in favor of AGENT DCB but were not statistically significant for interaction. (medscape.com)
  • Doctors deliver coronary stents by threading a slender tube (catheter) through a vessel in the wrist or upper thigh all the way up to the heart. (harvard.edu)
  • it involves creating a new route around the blocked artery with a blood vessel taken from the chest, arm, or leg. (harvard.edu)
  • however, restenosis occurs in up to a third of cases when smooth muscle cells migrate from the vessel wall into the stent. (wordinfo.info)
  • The rate of failure of the vessel was reduced from 21 percent with a standard stent to 8.6 percent with a sirolimus stent. (wordinfo.info)
  • Several reports in the literature have focussed on the formulation of the modelling approach applied to highly idealized arterial and stent geometries. (springer.com)
  • To investigate the relative importance of stent induced arterial stretch and deep injury to the development of in-stent neointima. (bmj.com)
  • Angiographically, restenosis is defined dichotomously as a luminal narrowing of more than 50% in the follow-up angiography, which occurs as a consequence of arterial damage with subsequent neointimal tissue proliferation [ 1 ]. (hindawi.com)
  • Several pathogenic mechanisms have been associated with restenosis development, among which we can find elastic recoil of the vessels, arterial remodeling, and neointimal hyperplasia. (hindawi.com)
  • Stents work on a simple principle: a balloon expands the stent to support the arterial wall and is then deflated and removed. (technologyreview.com)
  • Although effective in restoring the blood flow, these procedures activate a population of vascular cells resident in the arterial wall to grow into the vesslel lumen, causing re-narrowing (restenosis) of the treated artery months or years later. (ca.gov)
  • This is, however, a measurement of the image, not necessarily of the arterial blockage itself, because the angiogram is, in essence, a two-dimensional 'shadow image' of the artery. (ptca.org)
  • What if the entire segment of the artery were diseased and the native arterial diameter was actually wider than the angiogram showed? (ptca.org)
  • The IVUS imaging device is then 'pulled back' through the entire arterial segment, generating a rapid series of cross-sectional images which are quickly processed into a longitudinal reconstruction of the artery. (ptca.org)
  • But Colombo's IVUS images showed that many, if not most, stents were being underexpanded, underdeployed -- that they weren't being fitted snugly against the arterial wall. (ptca.org)
  • This technique refers to a procedure where the stent is placed partially into the aneurysm and into the afferent artery, and then the portion of the stent protruding into the aneurysm fundus provides neck support for the subsequent successful coiling. (ajnr.org)
  • Although a reduction in the percentage of subjects developing restenosis has been observed at the same time PCA has evolved, in-stent restenosis (ISR) continues to be one of the main complications in patients undergoing this procedure [ 2 ]. (hindawi.com)
  • The artery can be reopened with a procedure similar to the original stent placement, although doctors sometimes need to use a tiny drill or laser to cut through the obstruction. (harvard.edu)
  • Henry Ford Health Interventional cardiologists William O'Neill, M.D., and Khaldoon Alaswad, M.D., took a page out of the medical history books by performing a new coronary bypass procedure replicated from one not used in decades to treat a patient living with crippling angina - a severe symptom of coronary artery disease. (news-medical.net)
  • Each year, hundreds of thousands of patients are treated in the U.S. with coronary bypass surgery - open heart - or stent therapy through a cath lab procedure. (news-medical.net)
  • This risky method was later replaced by a safer coronary artery bypass procedure also known as coronary artery bypass graft (CABG) that became more common in the 1970s. (news-medical.net)
  • A channel between Casciano's circumflex artery and his coronary sinus was successfully created during the cath lab procedure, and the channel is functioning well. (news-medical.net)
  • Medicare covers PTA of the carotid artery concurrent with the placement of an FDA-approved carotid stent and an FDA-approved or cleared embolic protection device for an FDA-approved indication when furnished in accordance with FDA-approved protocols governing post-approval studies. (cms.gov)
  • Stent placement should only be performed at hospitals where emergency coronary artery bypass graft surgery can be readily performed. (medtronic.com)
  • The purpose of this study was to quantify the vascular geometry change due to intracranial stent placement and to discuss its potential effects on hemodynamics. (ajnr.org)
  • The angle between the afferent vessels (A1 segment) and the efferent vessels (ipsilateral or contralateral A2 segment) was calculated to determine the exact change in the angle after stent placement. (ajnr.org)
  • In addition to serving as a scaffold to contain coils, stent placement for AcomA aneurysms has a substantial effect on the vascular geometry, which may result in local hemodynamic changes. (ajnr.org)
  • Stent placement to prevent coil protruding into the parent artery has been successfully applied to intracranial aneurysm treatment. (ajnr.org)
  • The placement of a stent across the aneurysmal neck significantly alters hemodynamics in the aneurysmal sac. (ajnr.org)
  • The current objectives were to quantify the vascular angle changes due to intracranial stent placement and discuss the stent-associated effects on hemodynamics. (ajnr.org)
  • Patients treated with stent placement in an aneurysmal sac technique were excluded. (ajnr.org)
  • The new balloons broadened physicians' treatment options for peripheral artery disease (PAD) patients with a high risk of restenosis and expand the Stellarex portfolio. (researchandmarkets.com)
  • everolimus , ridaforolimus, zotarolimus) bonded to the metal that limit neointimal proliferation to reduce the risk of restenosis. (msdmanuals.com)
  • Genetic risk of restenosis after percutaneous coronary interventions in the era of drug-eluting stents. (cdc.gov)
  • DESs have not been approved for peripheral arteries. (technologyreview.com)
  • Fibromuscular dysplasia (FMD) is an uncommon angiopathy of uncertain etiology associated with heterogeneous histologic changes that may affect the carotid and vertebral circulation, visceral arteries, and peripheral arteries. (medscape.com)
  • The blood vessels that bring blood to your brain and face are called the carotid arteries. (medlineplus.gov)
  • Furthermore, adenoviral-mediated gene transfer of miRNA-145/143, which downregulate the expression of this miRNAs after injury, inhibits neointimal lesion formation in injured rat carotid arteries [ 11 ]. (hindawi.com)
  • [ 2 ] During the 1970s, the saphenous vein was first used to bypass vertebral artery origin stenoses. (medscape.com)
  • The investigators conclude with typical scientific understatement that: "Coronary stents coated with sirolimus have considerable promise in the treatment of simple and complex coronary stenoses. (wordinfo.info)
  • The diagnostic and prognostic information available from captopril renography and the increasing availability of magnetic resonance angiography (MRA) have reduced the use of renal arteriography as a diagnostic tool, except in evaluating kidneys with intrarenal branch-artery stenoses and those with complex vascular anatomy, including multiple accessory arteries. (medscape.com)
  • The most common disease affecting the vertebral artery is atherosclerosis . (medscape.com)
  • Atherosclerosis, a buildup of plaque, can lead to heart disease, artery disease, and chronic kidney disease and is traditionally treated by inserting and inflating a balloon to expand the artery. (scienceblog.com)
  • Stenting of RAS due to atherosclerosis is followed by stabilization or improvement of Ccr, mainly at the stented kidney, while contralateral renal function showed a decrease. (biomedcentral.com)
  • With the exception of the patient presenting with a vertebral artery aneurysm, surgical or endovascular intervention is not indicated in asymptomatic patients who harbor suspicious radiographic findings. (medscape.com)
  • For patients with aneurysms that need to be repaired, we offer minimally invasive repair with a stent-graft (endovascular aortic aneurysm repair, EVAR), or open repair depending on each patient's condition and specific anatomy. (valleymed.org)
  • History of diabetes mellitus and greater stent length were major risk factors in developing In-Stent Restenosis in our study. (pafmj.org)
  • Patients with diabetes mellitus have more extensive coronary artery disease, more disease progression, and restenosis. (lu.se)
  • 27 patients (diabetes mellitus in 8 cases) were subjected to stenting of the stenotic renal artery while 19 patients (diabetes mellitus in 9 cases) were kept on medical treatment only. (biomedcentral.com)
  • Coronary artery disease is one of the most widespread causes of mortality in industrialized countries. (springer.com)
  • Less commonly, the extracranial vertebral arteries can be affected by pathologic processes such as trauma, fibromuscular dysplasia , Takayasu disease , osteophyte compression, dissections, and aneurysms. (medscape.com)
  • To study the frequency of In-Stent Restenosis and its treatment in patients undergoing Percutaneous Coronary Intervention for coronary artery disease. (pafmj.org)
  • All the patients who underwent Percutaneous Coronary Intervention for Coronary Artery Disease at our institute were considered for this study. (pafmj.org)
  • Shamiri, M. , Al Mobeirek, A. , Albackr, H. and Albacker, T. (2014) Percutaneous Coronary Interventional Treatment for Coronary Artery Disease and the Role of Antiplaplatelets Therapy: A Review of the Literature. (scirp.org)
  • Challenges of Stent Restenosis in Superficial Femoral and Popliteal Artery Disease. (nih.gov)
  • IntraSight Mobile brings together imaging and physiology applications on a mobile system for coronary and peripheral artery disease therapy. (philips.com)
  • The pathogenetic mechanisms that lead to PVD are similar to those of coronary artery disease (CAD). (medscape.com)
  • Moreover, the uptake of percutaneous intervention in larger numbers of patients with increasingly complex lesion characteristics and disease comorbidities means that the number of patients presenting with restenosis remains considerable in absolute terms [ 3 ]. (hindawi.com)
  • This real-life registry study shows that restenosis was halved by DES in diabetic patients with stable or unstable coronary disease, with similar risk of death or MI up to 4 years compared with BMS. (lu.se)
  • Coronary revascularization has been a mainstay of therapy for coronary artery disease since the 1960's,' said Dr. O'Neill. (news-medical.net)
  • Coronary heart disease is a major cause of death worldwide, and stenting has become one of the preferred therapies for treatment. (umass.edu)
  • It is therefore important to define the underlying mechanisms of re-narrowing of injured arteries in order to design new therapies for coronary artery disease. (ca.gov)
  • The patient is a 48-year-old male, who was diagnosed with coronary artery disease (CAD), heart failure, type II diabetes, and post-PCI before surgery. (salesandmarketingnetwork.com)
  • This approval builds on a market-leading device with more on-label applications than any other self-expanding stent graft,* which has become an important tool for treating complex vascular disease. (goremedical.com)
  • I hope that physicians and operators actively consider intravascular imaging for patients with complex coronary artery disease. (tctmd.com)
  • It's in that population of complex coronary artery disease where we're now pulling out the OCT or high-definition IVUS to help us guide procedures. (tctmd.com)
  • And to make sure that the stent is long enough to cover all the disease (implanting a stent edge in a diseased area is a sure way to cause reblockage later on). (ptca.org)
  • Conventional catheter-based interventions for treating peripheral artery disease suffer high failure and complication rates. (bvsalud.org)
  • Coronary artery bypass grafting (CABG) is performed for patients with coronary artery disease (CAD) to improve quality of life and reduce cardiac-related mortality. (medscape.com)
  • Coronary artery disease 2014 Dec 25 (8): 658-64. (cdc.gov)
  • Mesenteric artery FMD is rare and presents with abdominal symptoms similar to Crohn disease (CD) and Behcet disease (BD). (medscape.com)
  • [ 1 ] Transposition of the proximal vertebral artery to the common carotid was described by Clark and Perry in 1966 through a similar approach. (medscape.com)
  • All had a long narrow segment in a single coronary artery that need to be treated. (wordinfo.info)
  • The surgeon places a catheter (a flexible tube) through the cut into an artery. (medlineplus.gov)
  • Moving x-ray pictures (fluoroscopy) are used to see the artery and guide the catheter to the correct position. (medlineplus.gov)
  • The stent is inserted at the same time as the balloon catheter. (medlineplus.gov)
  • The long-term outcome following repeat catheter-based treatments of previously implanted endothelialized stents is not well characterized. (medtronic.com)
  • Care should be taken to control the position of the guide catheter tip during stent delivery, deployment, and balloon withdrawal. (medtronic.com)
  • At the tip of the catheter is a small balloon with a stent. (harvard.edu)
  • Once the catheter reaches the area in the artery narrowed by fatty plaque, the balloon inflates and deploys the stent. (harvard.edu)
  • Fielder XT-R guide wire was successfully delivered through the occlusal segment to the distal left anterior descending artery with the assistance of an Expressman extension catheter and 130cm APT micro-catheter. (salesandmarketingnetwork.com)
  • After the operation, the catheter pump was successfully removed, and only a single ProGlide SMC device was used to close the femoral artery. (salesandmarketingnetwork.com)
  • A guiding catheter is inserted into a large peripheral artery and threaded to the appropriate coronary ostium. (msdmanuals.com)
  • In a 10 mm diameter, 30 cm long artery phantom model, with four operators, we evaluated the success rate and crossing time in accessing 1.25 mm target channels, the accessible workspace, and the force delivered through each catheter. (bvsalud.org)
  • Criteria to predict mid-term outcome after stenting of chronic iliac vein obstructions (PROMISE trial). (uzh.ch)
  • We can treat thoracic and abdominal aortic aneurysms, and aneurysms of the iliac, femoral, and popliteal arteries. (valleymed.org)
  • The purpose of this study was to evaluate the impact of stent design on wall shear stress (WSS), time average WSS, and WSS gradient (WSSG), in idealized stent geometries using computational fluid dynamics. (researchgate.net)
  • The approach to the distal vertebral artery was first described by Matas and Henry and was used for the treatment of traumatic injury. (medscape.com)
  • [ 4 , 5 ] During the late 1970s, venous bypass and skull base transposition procedures to revascularize the distal vertebral artery were developed using a similar approach. (medscape.com)
  • Coronary angiograms demonstrated an 85% in-stent restenosis in the distal segment of the left main. (salesandmarketingnetwork.com)
  • This 52-year-old man presented with pain in the left upper quadrant and was found to have a 3.2-cm aneurysm of the distal splenic artery. (medscape.com)
  • The new updates, aimed at innovating and advancing procedures including percutaneous coronary intervention (PCI) to treat the narrowing of coronary arteries, are being announced at the Transcatheter Cardiovascular Therapeutics (TCT) annual meeting (Orlando, USA, November 4-6). (philips.com)
  • Cardiovascular stents, fluid flow and endothelial cell phenotype. (umass.edu)
  • Association of CYP2C19*2 polymorphism with clopidogrel response and 1-year major adverse cardiovascular events in a multiethnic population with drug-eluting stents. (cdc.gov)
  • These patients are considered candidates for surgical or endoluminal correction of the offending lesion regardless of the condition of the contralateral vertebral artery. (medscape.com)
  • This innovative VIABAHN Device design reduces the delivery profile for larger 9-13 mm diameter stent grafts by up to 3 Fr, enabling delivery through smaller sheaths. (goremedical.com)
  • And misjudging the diameter and length of the blockage may lead, for example, to undersizing a coronary stent to be placed. (ptca.org)
  • The software quickly measures the diameter and length of the blockage and tells the cardiologist exactly the diameter and length of the stent he will need to optimally open this blockage. (ptca.org)
  • The muscle cells proliferate there and narrow the interior diameter of the stent. (wordinfo.info)
  • Stents are now used in more than 70% of percutaneous coronary interventions. (bmj.com)
  • In-stent restenosis is clinically challenging and accounts for about 10% of all percutaneous coronary interventions. (medscape.com)
  • I have introduced aerodynamic and fluid dynamic engineering principles into stent design, creating streamlined stent struts that differ from commercially available BMS and DES non-streamlined stent struts. (umass.edu)
  • For the Biomatrix stent, the adverse effect of thicker struts was mitigated by greater strut spacing, radial cell offset and flow-aligned struts. (researchgate.net)
  • Stent delivery system updates were implemented on the 2.0-4.0 mm Onyx Frontier DES diameters. (medtronic.com)
  • RESULTS: Between July 2003 and November 2006, 92 patients had a single internal carotid artery treated, while 7 underwent staged bilateral CAS. (uzh.ch)
  • A blockage in your carotid artery can reduce the blood supply to your brain. (medlineplus.gov)
  • It is carefully moved up to your neck to the blockage in your carotid artery. (medlineplus.gov)
  • Blockage of coronary arteries that supply blood to the heart muscle is the major cause of morbidity and mortality in our society. (ca.gov)
  • Certainly that fluoroscopic shadow image can be measured, comparing the narrowed area to what looks like the full size of the artery before and after the blockage. (ptca.org)
  • What if viewing this artery from a different angle showed less (or more) narrowing because the blockage was oval-shaped in the extreme? (ptca.org)
  • If the cardiologist knows the precise size of the artery and the blockage, he or she can size the stent correctly and expand it fully. (ptca.org)
  • 5- 8 The balance to be achieved is, therefore, in attaining adequate final stent dimensions without an excess of vascular injury, because vascular injury is intimately linked to in-stent neointima formation. (bmj.com)
  • The vascular surgery team at Valley Medical Center provides comprehensive care for conditions involving the arteries and veins throughout the body. (valleymed.org)