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  • vessel
  • Proliferation of smooth muscle cells (SMCs) in the vessel wall is an important event in the formation of vascular lesions in atherosclerosis, after vascular reconstruction or in response to other vascular injury. (google.com)
  • Both occlusion balloons and filters have the potential to inflict damage to the vessel wall during deployment, use, or retrieval. (ahajournals.org)
  • Alternatively, the graft may be used as a bypass around a diseased vessel. (google.ca)
  • Since a patient's blood vessels are not able to withstand repeated access with a needle, often vascular access is provided through a polytetrafluoroethylene (PTFE) graft, or another biocompatible vessel like a conduit such as a bovine vein graft, etc., that is sutured to a blood vessel. (google.com)
  • The implant is intended to be inserted into the patient and expanded to bring a graft into contact with inner wall linings of a blood vessel. (google.com)
  • A flexible graft covers the wire mesh so that as the mesh expands, the graft contacts inner wall linings of a blood vessel, typically the aortic artery. (google.com)
  • 2. The medical implant device of claim 1 further including a flexible tubular graft located radially outwardly of said mesh for engaging a wall lining of a vessel when said mesh is in the second position. (google.com)
  • After puncturing the vessel with a needle and confirmation of arterial access a wire is advanced, the needle removed and a vascular sheath is introduced. (wikipedia.org)
  • REBOA, also called Aortic Balloon Occlusion (ABO), is a powerful endovascular tool that inflates an intra-aortic balloon occluding the lumen of the vessel and decreased or completely prevents blood flow to the more distal parts. (wikipedia.org)
  • Vein grafting is a surgical technique in which a vein(s) is removed and grafted to another blood vessel to bypass a blockage, repair a blood vessel or connect blood vessels of a tissue or digit graft to recipient blood vessels. (wikipedia.org)
  • Free vein grafts are also used frequently during reconstructive surgery in situations where recipient vessels are damaged or are otherwise inadequate and require bridging vein grafts to connect graft and recipient blood vessels or to restore vessel length in situations where recipient vessels have been surgically debrided. (wikipedia.org)
  • However, over time, the body's inflammatory immune response (described below in the "Causes" section) reacts to the stent-graft via smooth muscle proliferation, etc., which literally pushes the stent-graft back, narrowing the vessel and losing at least a percentage of what was previously gained, or late loss. (wikipedia.org)
  • Vessel occlusion increases vascular resistance and therefore leads to hypertension. (wikipedia.org)
  • Angioplasty requires an access vessel, typically the femoral or radial artery or femoral vein to permit access to the vascular system for the wires and catheters used. (wikipedia.org)
  • A small vessel diameter, the presence of posterior calcification, occlusion, hematoma, or a bypass origin[clarification needed] may all make access to the vascular system too difficult. (wikipedia.org)
  • At the conclusion of the procedure, the balloons, wires and catheters are removed and the vessel puncture site is treated either with direct pressure or a vascular closure device. (wikipedia.org)
  • This vessel becomes a graft, with one end attaching to a blood source above and the other end below the blocked area, creating a "conduit" channel or new blood flow connection across the heart. (wikipedia.org)
  • type of vascular
  • The type of vascular access created for patients on hemodialysis is influenced by factors such as the expected time course of a patient's renal failure and the condition of his or her vasculature. (wikipedia.org)
  • tubular graft
  • A vascular tubular graft of a woven fabric with a single velour outside (external) surface and a smooth interior surface, said outside surface having a plurality of loops, each loop extending around a portion of the circumference thereof and each loop formed by fill yarn positioned about warp yarn. (google.ca)
  • 13. The graft of claim 11 in which each loop along the length of the tubular graft is offset and out of alignment with the next adjacent loop. (google.ca)
  • 16. The graft of claim 12 in which the tubular graft is crimped about its circumference. (google.ca)
  • thrombosis
  • Vein graft atherosclerotic lesions are more diffuse and concentric, yet less calcified, compared to native atherosclerotic lesions, and are more susceptible to thrombosis formation and rupture. (wikipedia.org)
  • aorta
  • Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) for hemorrhage control, angioembolization and stent grafts are highly established tools used for both arterial and venous hemorrhage in both traumatic and non-traumatic patients. (wikipedia.org)
  • Balloon
  • 19 However, rigorous particulate analysis was not performed in that trial, and it is not known whether there may be benefits of an occlusion balloon system (eg, more complete particulate retrieval and prevention of soluble mediators released during intervention) that are being offset by requisite procedural ischemia provoked by occlusion. (ahajournals.org)
  • Mechanical failure of the balloon itself is also a risk which entails vascular surgery to remove under that circumstance. (wikipedia.org)
  • synthetic
  • This invention is directed to vascular grafts of synthetic fibers. (google.ca)
  • The present invention relates generally to a device and minimally invasive procedure for treating a localized abnormal dilation of a lumen and more particularly, the present invention relates to a low profile stent suitable for use as a synthetic graft for the non-surgical treatment of an aneurysm, fistula, legion or the like in certain blood vessels and internal organs. (google.com.au)
  • Three primary methods are used to gain access to the blood: an intravenous catheter, an arteriovenous fistula (AV) or a synthetic graft. (wikipedia.org)
  • stent
  • It measures either the percent (relative) or absolute change in minimum luminal diameter (MLD) over the months following a vascular procedure, such as the implantation of a stent-graft. (wikipedia.org)
  • For instance, the implantation of a stent-graft will first provide an acute gain in lumen diameter. (wikipedia.org)
  • The net gain of lumen diameter is the difference between acute gain and late loss, and is a measure of stent-graft effectiveness. (wikipedia.org)
  • vessels
  • A collapsible medical device and associated method for grafting a lumen of selected organs and vessels, wherein the medical device is shaped from a shape memory fabric. (google.com.au)
  • A vascular bypass (or vascular graft) is a surgical procedure performed to redirect blood flow from one area to another by reconnecting blood vessels. (wikipedia.org)
  • A surgeon sews the graft to the source and target vessels by hand using surgical suture, creating a surgical anastomosis. (wikipedia.org)
  • Integral vein grafts refer to those blood vessels located within a flap or digit graft that are micro-surgically connected to recipient blood vessels. (wikipedia.org)
  • To create the bypass graft, a surgeon will remove or "harvest" healthy blood vessels from another part of the body, often from the patient's leg or arm. (wikipedia.org)
  • arteries
  • Such grafts usually are used in connection with arteries which carry large blood volumes e.g., located in the lower body of the human, although it may be used in other parts of the human body. (google.ca)
  • Arteries can also serve as vascular grafts. (wikipedia.org)
  • VGF may be identified in asymptomatic patients, but can also produce symptoms of ischemia, depending on the area of the supplied territory of the heart, and the function of native arteries and other grafts. (wikipedia.org)
  • aortic
  • Used when patient cannot tolerate a more invasive and higher risk aorto-bifem, or when removing an infected aortic graft such as an EVAR device. (wikipedia.org)
  • surgery
  • However, up to 40% of saphenous vein grafts will occlude within 10 years of surgery. (biomedsearch.com)
  • Journal of Vascular Surgery, 59(4), 1003-1008. (gwu.edu)
  • The creation of all these three major types of vascular accesses requires surgery. (wikipedia.org)
  • The group focuses on pancreatic cancer, other gastrointestinal and hepatobiliary malignancies, vascular disease, and transplant surgery. (wikipedia.org)
  • Pancreatic cancer and pancreatic disease Other gastrointestinal and hepatobiliary malignancies Vascular disease Transplant surgery and transplant psychology Investigating factors that affect surgical outcomes for diverse specialties including colorectal, cardiovascular, transplant, plastic and reconstructive, and minimally invasive surgery Beth Israel Deaconess Medical Center (BIDMC) in Boston, Massachusetts is a teaching hospital of Harvard Medical School. (wikipedia.org)
  • See also: Beth Israel Deaconess Medical Center website SOAR researchers use national health services and administrative databases as well as prospective institutional tissue-linked databases to investigate factors contributing to disease outcomes for pancreatic cancer, hepato biliary disease, vascular disease, colorectal disease, plastic and reconstructive surgery, and transplant medicine. (wikipedia.org)
  • These include: Vascular Study Group of New England (VSGNE), a regional vascular surgery database. (wikipedia.org)
  • Vascular Quality Initiative (VQI), a national vascular surgery database. (wikipedia.org)
  • ischemia
  • This is not surprising given the similar anatomy and physiology between types of vein grafts and given that vascular graft experience similar stresses, including the physical trauma of harvesting and handling, post-harvest ischemia, oxidative stress, reperfusion injury and adaptive stress in the new post grafting environment. (wikipedia.org)
  • Abdominal
  • In a hemodynamically unstable bleeding patient, traditional treatment is laparotomy with abdominal packing, but an EVTM team might simultaneously gain vascular access and perform REBOA for proximal control or embolization as a part in definitive treatment. (wikipedia.org)
  • dialysis
  • About 70% of such patients require two or more dialysis vascular access replacements and/or repairs every year. (google.com)
  • More than 30% of this cost is related to the creation and maintenance of the dialysis vascular access. (google.com)
  • In the latter two, needles are used to puncture the graft or fistula each time dialysis is performed. (wikipedia.org)
  • conduit
  • In general, someone's own vein (autograft) is the preferred graft material (or conduit) for a vascular bypass, but other types of grafts such as polytetrafluoroethylene (Teflon), polyethylene terephthalate (Dacron), or a different person's vein (allograft) are also commonly used. (wikipedia.org)
  • acute
  • This supports the notion that unless soluble mediators play an important role in adverse acute clinical events after stenting, the clinical efficacy of filtering devices may be equal to that of occlusion devices. (ahajournals.org)
  • arterial
  • Some structural changes of intima thickening and vein wall remodeling are necessary for vein graft adaptation to the arterial environment. (wikipedia.org)
  • The grafting exposes the vein to arterial pressure and flow that causes increased shear stress and wall tension, which further damages the endothelial layer and SMC. (wikipedia.org)
  • patients
  • The PercuSurge GuardWire was used in 17 saphenous vein grafts in 16 patients. (ahajournals.org)
  • Patients may have multiple accesses, usually because an AV fistula or graft is maturing and a catheter is still being used. (wikipedia.org)
  • Late loss is one metric that is useful in determining the effectiveness of vascular interventions in clinical trials for either an individual patient or a group of patients. (wikipedia.org)
  • failure
  • The effect of graft configuration on 30-day failure of infrapopliteal " by Bao-Ngoc Nguyen, Richard F. Neville et al. (gwu.edu)
  • implantation
  • Such overgrowth is at its highest during the first six months after the implantation or the repair of the graft. (google.com)
  • tissue
  • 1. A vascular graft comprising a seamless tube of crimped woven texturized yarn fabric, said tube having a complete outer velour surface and a smooth inner surface, said outer velour surface having loops open to receive tissue ingrowth formed of fill yarn, each of said loop extending outside of a plurality of warp yarns. (google.ca)
  • Vein grafting can be performed utilizing either free vein grafts or integral veins located within tissue grafts. (wikipedia.org)
  • Occlusion of vascular tissue, while a normal plant response to infection, makes symptoms significantly worse: as the bacteria itself also reduces vascular function, a 90% reduction of vascular hydraulic function was seen in susceptible Vitis vinifera. (wikipedia.org)
  • survival
  • Liver transplantation has evolved significantly in recent years, with each advancement part of the effort toward increasing patient and graft survival as well as quality of life. (readbyqxmd.com)
  • embolization
  • 18 By virtue of complete occlusion and poststenting complete graft evacuation, the PercuSurge device theoretically prevents embolization of all particles, no matter how small, as well as of soluble mediators released during stenting. (ahajournals.org)
  • It has not been established that the efficacy of occlusion systems can be matched by newer approaches to embolic protection such as filtering devices, which do not occlude anterograde flow but rather strain the effluent so as to prevent particulate embolization. (ahajournals.org)
  • device
  • A vascular graft device includes a semipermeable inner wall surrounding a passage. (google.com)
  • 3. The medical implant device of claim 2 further including at least one thread having one end connected to one of said tubes and one end connected to said graft. (google.com)
  • blood
  • While there are many anatomical arrangements for vascular bypass grafts in the lower extremities depending on the location of the disease, the principle is the same: to restore blood flow to an area without normal flow. (wikipedia.org)
  • However, blood flow is almost always less than that of a well functioning fistula or graft. (wikipedia.org)
  • Surgery
  • Balloon angioplasty and stenting has generally replaced surgery as the first-line treatment for renal arterial occlusions. (wakehealth.edu)
  • The creation of all these three major types of vascular accesses requires surgery. (wikipedia.org)
  • Mechanical failure of the balloon itself is also a risk which entails vascular surgery to remove under that circumstance. (wikipedia.org)
  • The group focuses on pancreatic cancer, other gastrointestinal and hepatobiliary malignancies, vascular disease, and transplant surgery. (wikipedia.org)
  • Pancreatic cancer and pancreatic disease Other gastrointestinal and hepatobiliary malignancies Vascular disease Transplant surgery and transplant psychology Investigating factors that affect surgical outcomes for diverse specialties including colorectal, cardiovascular, transplant, plastic and reconstructive, and minimally invasive surgery Beth Israel Deaconess Medical Center (BIDMC) in Boston, Massachusetts is a teaching hospital of Harvard Medical School. (wikipedia.org)
  • See also: Beth Israel Deaconess Medical Center website SOAR researchers use national health services and administrative databases as well as prospective institutional tissue-linked databases to investigate factors contributing to disease outcomes for pancreatic cancer, hepato biliary disease, vascular disease, colorectal disease, plastic and reconstructive surgery, and transplant medicine. (wikipedia.org)
  • These include: Vascular Study Group of New England (VSGNE), a regional vascular surgery database. (wikipedia.org)
  • Vascular Quality Initiative (VQI), a national vascular surgery database. (wikipedia.org)
  • renal
  • The type of vascular access created for patients on hemodialysis is influenced by factors such as the expected time course of a patient's renal failure and the condition of his or her vasculature. (wikipedia.org)
  • proximal
  • In a hemodynamically unstable bleeding patient, traditional treatment is laparotomy with abdominal packing, but an EVTM team might simultaneously gain vascular access and perform REBOA for proximal control or embolization as a part in definitive treatment. (wikipedia.org)
  • hypertension
  • To complement the CHADS2 score, the ESC guidelines on atrial fibrillation management recommend using the new CHA2DS2-VASc score (Congestive heart failure, Hypertension, Age ≥75 years (doubled), Diabetes mellitus, Stroke (doubled), Vascular disease, Age 65-74 years, Sex category], which is more inclusive of 'stroke risk modifier' risk factors. (wikipedia.org)
  • The new CHA2DS2-VASc score (Congestive heart failure, Hypertension, Age ≥75 years (doubled), Diabetes mellitus, Stroke (doubled), Vascular disease, Age 65-74 years, Sex category] has also been validated in other large independent cohorts. (wikipedia.org)
  • disease
  • At Aspirus Heart & Vascular, we pool the energies and expertise of the best surgeons, cardiologists, and research specialists to attack the disease from all angles. (aspirus.org)
  • While there are many anatomical arrangements for vascular bypass grafts in the lower extremities depending on the location of the disease, the principle is the same: to restore blood flow to an area without normal flow. (wikipedia.org)
  • Hospital
  • 2009 Wohlgemuth launched the Interdisciplinary Center for Congenital Vascular Anomalies at the hospital of Augsburg, which he presided until 2011. (wikipedia.org)
  • Early
  • It is in general beneficial to gain early vascular access as the inguinal area is seldom occupied and, if possible, attempt to do this on the contralateral side to a major lower extremity injury. (wikipedia.org)
  • often
  • Functional reconstruction in the head and neck area often requires reconstruction of the oral cavity, the jawbone and the dental occlusion. (wikipedia.org)
  • larger
  • Before the development of laser tattoo removal methods, common techniques included dermabrasion, TCA (Trichloroacetic acid, an acid that removes the top layers of skin, reaching as deep as the layer in which the tattoo ink resides), salabrasion (scrubbing the skin with salt), cryosurgery and excision which is sometimes still used along with skin grafts for larger tattoos. (wikipedia.org)
  • Center
  • Since 2012 Wohlgemuth is head of the newly established Interdisciplinary Vascular Anomalies Center in Regensburg. (wikipedia.org)