The degree to which BLOOD VESSELS are not blocked or obstructed.
Methods for assessing the patency of the fallopian tubes.
Obstruction of flow in biological or prosthetic vascular grafts.
Surgical shunt allowing direct passage of blood from an artery to a vein. (From Dorland, 28th ed)
Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron.
The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.
The main artery of the thigh, a continuation of the external iliac artery.
Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.
Pathological processes which result in the partial or complete obstruction of ARTERIES. They are characterized by greatly reduced or absence of blood flow through these vessels. They are also known as arterial insufficiency.

Infrainguinal revascularisation in the era of vein-graft surveillance--do clinical factors influence long-term outcome? (1/2062)

OBJECTIVES: To investigate the variables affecting the long-term outcome of infrainguinal vein bypass grafts that have undergone postoperative surveillance. DESIGN: A retrospective analysis. PATIENTS AND METHODS: Details of 299 consecutive infrainguinal vein grafts performed in 275 patients from a single university hospital were collected and analysed. All grafts underwent postoperative duplex surveillance. Factors affecting patency, limb salvage and survival rates were examined. These factors were gender, diabetes, hypertension, aspirin, warfarin, ischaemic heart disease, run-off, graft type, early thrombectomy, level of anastomoses and indication for surgery. RESULTS: The 6-year primary, primary assisted and secondary patency rates were 23, 47, and 57%, respectively. Six-year limb salvage and patient survival were 68 and 45%, respectively. Primary patency was adversely influenced by the use of composite vein grafts. Early thrombectomy was the only factor that significantly influenced secondary patency. Limb salvage was worse in diabetic limbs, limbs with poor run-off and in grafts that required early thrombectomy. Postoperative survival was better in males, claudicants and in patients who took aspirin. CONCLUSIONS: Although co-morbid factors did not influence graft patency rates, diabetes did adversely effect limb salvage. This study, like others before it, confirms that aspirin significantly reduces long-term mortality in patients undergoing infrainguinal revascularisation.  (+info)

Isolated femoropopliteal bypass graft for limb salvage after failed tibial reconstruction: a viable alternative to amputation. (2/2062)

PURPOSE: Femoropopliteal bypass grafting procedures performed to isolated popliteal arteries after failure of a previous tibial reconstruction were studied. The results were compared with those of a study of primary isolated femoropopliteal bypass grafts (IFPBs). METHODS: IFPBs were only constructed if the uninvolved or patent popliteal segment measured at least 7 cm in length and had at least one major collateral supplying the calf. When IFPB was performed for ischemic lesions, these lesions were usually limited to the digits or small portions of the foot. Forty-seven polytetrafluoroethylene grafts and three autogenous reversed saphenous vein grafts were used. RESULTS: Ankle brachial pressure index (ABI) increased after bypass grafting by a mean of 0.46. Three-year primary life table patency and limb-salvage rates for primary IFPBs were 73% and 86%, respectively. All eight IFPBs performed after failed tibial bypass grafts remained patent for 2 to 44 months, with patients having viable, healed feet. CONCLUSION: In the presence of a suitable popliteal artery and limited tissue necrosis, IFPB can have acceptable patency and limb-salvage rates, even when a polytetrafluoroethylene graft is used. Secondary IFPB can be used to achieve limb salvage after failed tibial bypass grafting.  (+info)

Superficial femoral eversion endarterectomy combined with a vein segment as a composite artery-vein bypass graft for infrainguinal arterial reconstruction. (3/2062)

OBJECTIVE: The purpose of this study was to determine the results of composite artery-vein bypass grafting for infrainguinal arterial reconstruction. METHODS: This study was designed as a retrospective case series in two tertiary referral centers. Forty-eight of 51 patients underwent the procedure of interest for the treatment of ischemic skin lesions (n = 42), rest pain (n = 3), disabling claudication (n = 1), and infected prosthesis (n = 2). The intervention used was infrainguinal composite artery-vein bypass grafting to popliteal (n = 18) and infrapopliteal (n = 30) arteries, with an occluded segment of the superficial femoral artery prepared with eversion endarterectomy and an autogenous vein conduit harvested from greater saphenous veins (n = 43), arm veins (n = 3), and lesser saphenous veins (n = 2). The main outcome measures, primary graft patency rates, foot salvage rates, and patient survival rates, were described by means of the life-table method for a mean follow-up time of 15.5 months. RESULTS: The cumulative loss during the follow-up period was 6% and 24% at 6 and 12 months, respectively. The primary graft patency rates, the foot salvage rates, and the patient survival rates for patients with popliteal grafts were 60.0% +/- 9.07%, 75.7% +/- 9.18%, and 93.5% +/- 6.03%, respectively, at 1 month; 53.7% +/- 11.85%, 68.9% +/- 12.47%, and 85. 0% +/- 9.92% at 1 year; and 46.7% +/- 18.19%, 68.9% +/- 20.54%, and 53.1% +/- 17.15% at 5 years. For infrapopliteal grafts, the corresponding estimates were 72.4% +/- 7.06%, 72.9% +/- 6.99%, and 92.7% +/- 4.79% at 1 month; 55.6% +/- 10.70%, 55.4% +/- 10.07%, and 77.9% +/- 9.02% at 1 year; and 33.6% +/- 22.36%, 55.4% +/- 30.20%, and 20.8% +/- 9.89% at 5 years. CONCLUSION: The composite artery-vein bypass graft is a useful autogenous alternative for infrainguinal arterial reconstruction when a vein of the required quality is not available or when the procedure needs to be confined to the affected limb.  (+info)

Surgical transluminal iliac angioplasty with selective stenting: long-term results assessed by means of duplex scanning. (4/2062)

PURPOSE: The safety of iliac angioplasty and selective stenting performed in the operating room by vascular surgeons was evaluated, and the short- and long-term results were assessed by means of serial duplex scanning. METHODS: Between 1989 and 1996, 281 iliac stenotic or occlusive lesions in 235 consecutive patients with chronic limb ischemia were treated by means of percutaneous transluminal angioplasty (PTA) alone (n = 214) or PTA with stent (n = 67, 23.8%). There were 260 primary lesions and 21 restenosis after a first PTA, which were analyzed separately. Stents were implanted in selected cases, either primarily in totally occluded arteries or after suboptimum results of PTA (ie, residual stenosis or a dissection). Data were collected prospectively and analyzed retrospectively. Results were reported in an intention-to-treat basis. Clinical results and patency were evaluated by means of symptom assessment, ankle brachial pressure index, and duplex scanning at discharge and 1, 3, 6, and every 12 months after angioplasty. To identify factors that may affect outcome, 12 clinical and radiological variables, including the four categories of lesions defined by the Standards of Practice Committee of the Society of Cardiovascular and Interventional Radiology, were analyzed separately. The statistical significances of life-table analysis of patency were determined by means of the log-rank test. RESULTS: There were no postoperative deaths or amputations. Local, general, and vascular complications occurred in 2.1%, 1.3% and 4.7% of cases, respectively (total, 8.1%). The mean follow-up period was 29.6 months. The cumulative patency rates +/- SE of the 260 PTAs (including 55 PTAs plus stents) were 92.9% +/- 1.5% at 1 month, 86. 5% +/- 1.7% at 1 year, 81.2% +/- 2.3% at 2 years, 78.8% +/- 2.9% at 3 years, and 75.4% +/- 3.5% at 5 and 6 years. The two-year patency rate of 21 redo PTAs (including 11 PTAs plus stents) was 79.1% +/- 18.2%. Of 12 predictable variables studied in the first PTA group, only the category of the lesion was predictive of long-term patency. The two-year patency rate was 84% +/- 3% for 199 category 1 lesions and 69.7% +/- 6.5% for 61 category 2, 3, and 4 lesions together (P =. 02). There was no difference of patency in the stented and nonstented group. CONCLUSION: Iliac PTA alone or with the use of a stent (in cases of occlusion and/or suboptimal results of PTA) offers an excellent long-term patency rate. Categorization of lesions remains useful in predicting long-term outcome. PTA can be performed safely by vascular surgeons in the operating room and should be considered to be the primary treatment for localized iliac occlusive disease.  (+info)

Right atrial bypass grafting for central venous obstruction associated with dialysis access: another treatment option. (5/2062)

PURPOSE: Central venous obstruction is a common problem in patients with chronic renal failure who undergo maintenance hemodialysis. We studied the use of right atrial bypass grafting in nine cases of central venous obstruction associated with upper extremity venous hypertension. To better understand the options for managing this condition, we discuss the roles of surgery and percutaneous transluminal angioplasty with stent placement. METHODS: All patients had previously undergone placement of bilateral temporary subclavian vein dialysis catheters. Severe arm swelling, graft thrombosis, or graft malfunction developed because of central venous stenosis or obstruction in the absence of alternative access sites. A large-diameter (10 to 16 mm) externally reinforced polytetrafluoroethylene (GoreTex) graft was used to bypass the obstructed vein and was anastomosed to the right atrial appendage. This technique was used to bypass six lesions in the subclavian vein, two lesions at the innominate vein/superior vena caval junction, and one lesion in the distal axillary vein. RESULTS: All patients except one had significant resolution of symptoms without operative mortality. Bypass grafts remained patent, allowing the arteriovenous grafts to provide functional access for 1.5 to 52 months (mean, 15.4 months) after surgery. CONCLUSION: Because no mortality directly resulted from the procedure and the morbidity rate was acceptable, this bypass grafting technique was adequate in maintaining the dialysis access needed by these patients. Because of the magnitude of the procedure, we recommend it only for the occasional patient in whom all other access sites are exhausted and in whom percutaneous dilation and/or stenting has failed.  (+info)

Relief of obstructive pelvic venous symptoms with endoluminal stenting. (6/2062)

PURPOSE: To select patients for percutaneous transluminal stenting of chronic postthrombotic pelvic venous obstructions (CPPVO), we evaluated the clinical symptoms in a cohort of candidates and in a series of successfully treated patients. METHODS: The symptoms of 42 patients (39 women) with CPPVO (38 left iliac; average history, 18 years) were recorded, and the venous anatomy was studied by means of duplex scanning, subtraction venography, and computed tomography or magnetic resonance imaging. Successfully stented patients were controlled by means of duplex scanning and assessment of symptoms. RESULTS: The typical symptoms of CPPVO were reported spontaneously by 24% of patients and uncovered by means of a targeted interview in an additional 47%. Of 42 patients, 15 had venous claudication, four had neurogenic claudication (caused by dilated veins in the spinal canal that arise from the collateral circulation), and 11 had both symptoms. Twelve patients had no specific symptoms. Placement of a stent was found to be technically feasible in 25 patients (60%), was attempted in 14 patients, and was primarily successful in 12 patients. One stent occluded within the first week. All other stents were fully patent after a mean of 15 months (range, 1 to 43 months). Satisfaction was high in the patients who had the typical symptoms, but low in those who lacked them. CONCLUSION: Venous claudication and neurogenic claudication caused by venous collaterals in the spinal canal are typical clinical features of CPPVO. We recommend searching for these symptoms, because recanalization by means of stenting is often feasible and rewarding.  (+info)

Use of high-intensity focused ultrasound to control bleeding. (7/2062)

OBJECTIVE: High-intensity focused ultrasound (HIFU) has been shown to be effective in controlling hemorrhage from punctures in blood vessels. The objective of the current study was to investigate the capability of HIFU to stop bleeding after a more severe type of vascular injury, namely longitudinal incisions of arteries and veins. METHODS: The superficial femoral arteries, common femoral arteries, carotid arteries, and jugular veins of four anesthetized pigs were exposed surgically. A longitudinal incision, 2 to 8 mm in length, was produced in the vessel. HIFU treatment was applied within 5 seconds of the onset of the bleeding. The HIFU probe consisted of a high-power, 3.5-MHz, piezoelectric transducer with an ellipsoidal focal spot that was 1 mm in cross section and 9 mm in axial dimension. The entire incision area was scanned with the HIFU beam at a rate of 15 to 25 times/second and a linear displacement of 5 to 10 mm. A total of 76 incisions and HIFU treatments were performed. RESULTS: Control of bleeding (major hemosatsis) was achieved in all 76 treatments, with complete hemostasis achieved in 69 treatments (91%). The average treatment times of major and complete hemostasis were 17 and 25 seconds, respectively. After the treatment, 74% of the vessels in which complete hemostasis was achieved were patent with distal blood flow and 26% were occluded. The HIFU-treated vessels showed a consistent coagulation of the adventitia surrounding the vessels, with a remarkably localized injury to the vessel wall. Extensive fibrin deposition at the treatment site was observed. CONCLUSION: HIFU may provide a useful method of achieving hemostasis for arteries and veins in a variety of clinical applications.  (+info)

Hemodialysis access: influence of the human immunodeficiency virus on patency and infection rates. (8/2062)

PURPOSE: The complication rate for patients who are dialysis dependent and infected with the human immunodeficiency virus (HIV) and the role of viral indicators (CD4 counts) as predictors of these complications are poorly characterized. To determine the influence of HIV status and viral activity on graft patency and infection rates, we retrospectively reviewed our results. METHODS: Between June 1993 and March 1997, the charts of 104 patients (HIV+, n = 42; HIV-, n = 62) who required 112 hemodialysis access grafts were reviewed. Of the 112 procedures, 55 (48%) were autologous arteriovenous fistulae (AVF) procedures (HIV+, n = 23; HIV-, n = 32) and 57 (52%) were prosthetic expanded polytetrafluoroethylene grafting procedures (HIV+, n = 27; HIV-, n = 30). Transcutaneous catheter procedures were excluded from the study. The autologous AVF procedures consisted of direct and transposed AVFs. Patency rates were determined by means of life-table analysis. Infection rates and CD4 counts were compared with the chi2 test and the Fisher exact test. Significance was accepted at a P value of.05 or less. RESULTS: The cumulative 12-month and 24-month patency rates for prosthetic grafts in patients who were HIV+ were 49% and 21%, respectively, versus 77% and 45% for patients who were HIV-. The differences in the prosthetic graft patency rates between these two groups were significant (P .05). The mean CD4+ cell counts were 174: CD4+ counts that were less than 200 did not correlate with or predict the development of infection (P >.05). CONCLUSION: Our data showed that prosthetic graft infection rates were increased and patency rates were decreased in patients who were HIV+ as compared with patients who were HIV- and HIV+ with autologous AVFs. There were no differences in patency rates or infection rates in patients who had undergone autologous access procedures. Long-term graft patency rates were not affected by HIV status, and CD4+ lymphocyte counts were not predictive of infection development. Because the prosthetic graft infection rates exceeded those rates of autologous access procedures, we recommend the vigorous use of autologous AVFs in all patients who are HIV+, regardless of CD4+ count.  (+info)

Sep 28, 2015. MAJESTIC Trial Data Support Strong Safety Profile with Low Target Lesion Revascularization Rate. New 12-month clinical trial outcomes assessing the safety and performance of the Boston Scientific (NYSE: BSX) Eluvia™ Drug-Eluting Vascular Stent System reflect a primary patency rate1 of more than 96 percent. These results represent the highest 12-month primary patency reported for an interventional treatment of femoropopliteal artery lesions among comparable trials. The Eluvia Stent System is an advanced treatment option for patients with narrowing or blockages in the superficial femoral artery (SFA) or proximal popliteal artery (PPA), a result of peripheral artery disease (PAD).. Results from the MAJESTIC trial, which were presented at the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) annual meeting in Lisbon, Portugal, also included a low 12-month target lesion revascularization (TLR) rate of 3.8 percent, with no observed stent fractures and no ...
The Particulars: Previous research has not established the success rate for stenting of the superficial femoral artery (SFA).. Data Breakdown: An investigation conducted in Germany was performed, involving 517 patients who received 827 SFA stents in 543 limbs. More than three-quarters of patients (78%) were treated for claudication, and the remainder were treated for critical limb ischemia (CLI). At 1, 3, and 5 years, primary patency rates were 86%, 75%, and 61%, respectively. Secondary patency rates at the same time points were 95%, 90%, and 76%. At an average of 93.4 months follow up, 18.8% of patients died.. Take Home Pearl: More than half of patients treated with SFA stents for claudication or CLI appear to retain primary patency with their stents when assessed at 5 years. ...
Miromatrix will present its latest transplantable liver milestone at The Liver Meeting® hosted by the American Association for the Study of Liver Diseases (AASLD) on October 20-24 in Washington, D.C. Building on the companys successful liver re-endothelialization efforts, Miromatrix has advanced its ability to demonstrate functional liver vasculature by maintaining long-term vascular patency of its engineered liver grafts in a porcine model. A poster describing these advancements entitled Towards Long-Term Vascular Patency of Tissue Engineered Liver Grafts: a Large Animal Study will be presented at the conference on October 20th (Poster #712). Twenty-seven porcine liver grafts were seeded with endothelial cells cultured in bioreactors, 20 of which were evaluated in vitro to determine important factors that predict in vivo vascular patency. Grafts with higher glucose consumption rate (GCR) had evidence of better endothelial coverage (p=0.012) and correlated significantly with graft flow ...
Aim. Randomized studies evaluating the effect of a vein collar at the distal anastomosis of PTFE-grafts show conflicting results. The study of the Joint Vascular Research Group (JVRG) of UK found improved primary patency while the Scandinavian Miller Collar Study (SCAMICOS) found neither any effect on patency nor on limb salvage after bypass to below-knee arteries. However, the Scandinavian patients were a decade older and predominately female compared to the British patients. Can this explain the conflicting result? less thanbrgreater than less thanbrgreater thanMethods: Primary patency with respect to sex, age and the use of vein collar were re-analysed in 345 patients from SCAMICOS with Kaplan-Meier life-table technique, log-rank test and Cox proportional hazards regression to evaluate any interaction between sex or age and the effect of a vein collar on the primary patency rate. less thanbrgreater than less thanbrgreater thanResults. Females had better patency than males (log-rank test, ...
Besides the main result (similar patency of the beating-heart grafts and classic on-pump grafts), the most surprising finding in this study was the low saphenous graft patency in both study groups. This can be explained by the fact that this study was meticulously prepared not to allow cardiac surgeon to influence patient selection for the study. Thus, this study reflects the real-life everyday practice of cardiac surgery at the beginning of the 21st century. This means that almost all patients with good-quality vessels (ie, vessels ,2 mm, without heavy diffuse calcifications, without chronic total occlusions) are treated by percutaneous coronary interventions. Thus, the current cardiac surgery patient population consists of patients not suitable for angioplasty-the most advanced coronary artery disease cases. Most of the older trials investigating angiographic bypass graft patency after classic on-pump surgery were done 10 to 20 years ago, well before the modern stent era. Thus, they enrolled ...
Haskal ZJ, Saad TF, Hoggard JG, Cooper RI, Lipkowitz GS, Gerges A, Ross JR, Pflederer TA, Mietling SW. Prospective, Randomized, Concurrently-Controlled Study of a Stent Graft versus Balloon Angioplasty for Treatment of Arteriovenous Access Graft Stenosis: 2-Year Results of the RENOVA Study. J Vasc Interv Radiol. 2016 Aug; 27(8):1105-1114.e3 ...
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
Parent vessel patency and incidence of different flow patterns over the course of two weeks after mini port implantation in mice.
Remi Bloston is the new hot product on the European market. It is very likely that it will be the best-selling supplement that treats cardiovascular issues this year!
A method for implanting an end portion of a graft within the body of a patient during a bypass grafting procedure includes the steps of (1) making an arteriotomy in a sidewall of a blood vessel at a f
CINAR BAYER , GOKSEL ONUR S. , YEKELER IBRAHIM THE TOHOKU JOURNAL OF EXPERIMENTAL MEDICINE 207(3), 233-238, 2005-11-01 医中誌Web 参考文献15件 被引用文献1件 ...
Aortocoronary bypass graft failure is common and is associated with high morbidity and mortality. Failure of saphenous vein grafts is more common than failure of internal mammary artery grafts. Whether early graft angiography can reduce bypass graft failure remains unknown. The Cardiac CAtheterization for Bypass Graft Patency Rate Optimization (CABG-PRO) randomized-controlled pilot study is a phase III, double-blind, randomized-controlled pilot trial that will randomize 170 patients undergoing coronary artery bypass graft surgery to early (before dismissal) graft angiography vs. no early graft angiography. Coronary angiography will be performed at 12 months, to determine whether compared to no early graft angiography, early graft angiography will result in:. ...
Aortocoronary bypass graft failure is common and is associated with high morbidity and mortality. Failure of saphenous vein grafts is more common than failure of internal mammary artery grafts. Whether early graft angiography can reduce bypass graft failure remains unknown. The Cardiac CAtheterization for Bypass Graft Patency Rate Optimization (CABG-PRO) randomized-controlled pilot study is a phase III, double-blind, randomized-controlled pilot trial that will randomize 170 patients undergoing coronary artery bypass graft surgery to early (before dismissal) graft angiography vs. no early graft angiography. Coronary angiography will be performed at 12 months, to determine whether compared to no early graft angiography, early graft angiography will result in:. ...
Licht et al reported a series of 39 patients undergoing coronary artery bypass grafting(CABG) who had a cephalic vein. 18 had angiographic follow up (mean 31 months). 52% of grafts were patent, 39% of all veins had intraluminal disease, and 19% were dilated. Wijnberg et al compared a group of 28 patients who received a cephalic vein graft with a matched group who received saphenous vein grafts. At mean 4.6 year follow up, cephalic vein patency was 47% compared to 77%. Stoney et al assessed the patency of 56 cephalic or basilic vein grafts from 28 patients. 32/56(57%) grafts were patent at mean 25 months while 7(12.5%) of the patent grafts had localised stenoses. Jarvinen et al reported the patency of 16 cephalic veins in 15 patients. At a mean follow up of 1.4 years (1-42 months), 87% (27/31 distal anastomoses) were patent angiographically although 3 veins also had aneurysmal dilatation. Prieto et al examined ten patients at different intervals. The early patency of arm vein grafts in six ...
HypothesisPercutaneous angioplasty would provide a durable alternative to surgical revision in the treatment of infrainguinal vein graft stenosis.DesignOutcome
Cryopreserved allografts have demonstrated resistance to infection similar to that of autogenous tissue when used for the treatment of prosthetic arterial bypass graft infections. As the number of hemodialysis access procedures increases, prosthetic hemodialysis graft infection has become a significant problem. We have used the cryopreserved femoral vein as an alternative conduit in the treatment of prosthetic arteriovenous (AV) hemodialysis graft infections. Forty-eight cryopreserved femoral vein AV graft procedures were performed. The 1-year primary graft patency rate was 49%, while the secondary graft patency rate was 75%. No subsequent cryopreserved allograft infections occurred. The cryopreserved femoral vein graft is a safe, durable, and infection resistant conduit for the treatment of prosthetic AV hemodialysis graft infections.
We have reviewed our experience with the tibial vessel bypass operation and have found the overall patency and limb salvage rates to be acceptable. Patients were divided into two groups based on the site of the proximal anastomosis. In Group I, the proximal anastomosis was at the common femoral artery and in Group II, the proximal anastomosis was at the distal superficial femoral artery or the popliteal artery. The patients in the the two groups were similar with regard to indications for operation, age, and sex. However, in Group I, 35 percent of the patients were diabetic and in Group II, 74 percent of the patients were diabetic. In the Group I patients, the 72 month graft patency rate was 65 percent with a limb salvage rate of 75 percent. In the Group II patients, the 72 month patency rate was 81 percent with a limb salvage rate of 89 percent. Some possible explanations for this slightly better result in Group II patients are discussed. All tibial bypasses were divided into three groups based on the
Autologous saphenous vein continues to be one of the most widely used conduits for myocardial revascularization7 despite its disappointing long-term patency rate, with ≤50% of vein grafts occluded by 10 years after surgery.8 9 Late occlusion appears to result from both medial and neointimal thickening, caused by migration and proliferation of smooth muscle cells, and the late appearance of mature lipid-laden atherosclerotic plaques. These changes can compromise flow directly or promote thrombotic occlusion.1 10 Neither antiplatelet therapy nor avoidance of surgical preparative injury has been shown conclusively to eliminate medial and neointimal thickening in either experimental models or human vein grafts.1 2 8 Vessel wall thickening may be regarded as an intrinsic adaptation of the vein to arterial pressure,1 10 and grafting per se was recently shown to stimulate the production of endogenous growth factors from pig saphenous vein, which may account for the platelet independence of graft wall ...
In this issue of the Journal, Gaudino et al. (1) report on an interesting and fairly unique study describing the 20-year patency and outcomes in their initial series of 100 patients who received a radial artery (RA) graft, and who were prospectively followed. Previous long-term follow-up series of the RA as a coronary artery bypass graft (CABG) included those from Achouh et al. (2), Shi et al. (3), and the investigators of the Gaudino paper themselves (4). The main strength of the present study is the pre-specified systematic assessment of graft patency and RA harvest-related arm complications at specific time points, with a long period of follow-up.. All studies that deal primarily with long-term graft patency have inherent weaknesses. Because it is virtually impossible to have all patients return for long-term invasive coronary anatomy and graft assessment, various methodological approaches may be used to estimate true conduit patency. Some authors choose to ignore, that is censor, patients ...
PURPOSE: To evaluate the influence of serum lipid subfraction concentrations on arterial patency after percutaneous transluminal angioplasty (PTA) in patients with infrainguinal peripheral artery occlusive disease (PAOD). METHODS: From January 2007 t
This study shows that in patients randomly treated with either an RGEA or an SVG for a stenosis of the RCA, the proportion of grafts found occluded on systematic 6-month angiographic control is low and independent of the type of graft conduit; however, the flow pattern is significantly more affected by the angiographic characteristics of the grafted RCA for RGEA than for SVG. Consequently, most SVG but only a minority of RGEA remained functional when the MLD of the RCA was larger than a threshold value close to 1.0 mm.. Previous angiographic follow-up studies of RGEA have suggested that the graft patency might be affected by the stenosis of the recipient RCA, most likely as a result of competitive flow (3,15,16). The evaluation of stenosis severity was based on visual interpretation of post-operative coronary angiogram at the time of angiographic follow-up. In the present study, the evaluation of RCA stenosis severity was done on pre-operative angiogram to eliminate the possible influence of ...
Introduction: Acknowledging the superior long term patency of infrainguinal saphenous bypass to distal popliteal artery, debate continues regarding the choice of alternative conduits and possible surgical adjuncts to improve inflow and graft salvage. The objective of this retrospective study was to determine the effectiveness of proximal anastomotic patch as adjunct to open surgical below the knee popliteal revascularization.. Material and Methods: In a series of 132 distal popliteal bypass operations 63 non-reversed vein, 18 in situ vein and 51 Omniflow bypass conduits were used. Proximal anastomotic patch was applied in overall 28 patients: 19% in the non-reversed (12 patients), 50% in the in situ group (9 patients) and 13.7% in the Omniflow group (7 patients).. Results: The reintervention rate was 7.9% in the non-reversed, 33.3% in the in situ and 31.4% in the Omniflow group. The most often complication was the proximal anastomotic stenosis (5.3%), followed by bleeding (3%), infection (1.5%) ...
In comparison to medical treatment and PCI, CABG surgery undoubtedly reduces angina severity and frequency in at least 80- 85% of patients. Though coronary artery bypass surgery has stood the test of time, its success mainly depends on the long term patency of the grafts.. Recurrent limiting angina after CABG, however, has been a major challenge to the treating surgeon and physician. To patients, it is much more grievous than mortality. In our center, there were a total of 80 patients present with refractory angina after CABG surgery from 2014 till 2019. Despite optimal medical management, the other option is revascularization, either PCI or redo surgery. Redo- CABG is often fraught by patients due to its high mortality risk, 2-3 times higher than the first surgery with relatively less promising angina alleviation. Redo- CABG is associated with greater risk of bleeding, exploration difficulty due to adhesions, and potential injury to the existing grafts. Therefore, redo- CABG is only limited to ...
According to his study-Stent graft vs. balloon angioplasty for failing dialysis-access grafts- published in the New England Journal of Medicine, anatomic success with the stent graft compared to percutaneous transluminal angioplasty was 94% and 73% respectively. At six months, Haskal explained, binary restenosis was 27.63% for the stent graft and 77.61% for angioplasty.. He also noted that the 12-month reintervention rate to maintain patency was 1.9% for the stent graft and 2.4% for angioplasty. The 12-month index of patency function was 5.3% for the stent graft and 4.4% for angioplasty, for access circuit primary patency it was 24.1% and 10.3%, and for treatment area primary patency it was 4.7% and 24.8% respectively. The latter was statistically significant (p,0.001).. Results of the study exceeded our expectations, and that is a boon for dialysis patients, said Haskal. Dialysis is very demanding, and anything that prevents access sites from failing and reduces the need for invasive ...
November 23, 2016-Biotronik announced that interim data from the BIOFLEX PEACE all-comers trial, which confirm the efficacy of the companys Pulsar-18 bare-metal, self-expanding stent (BMS SE) in the treatment of superficial femoral artery (SFA) disease, were presented at the 43rd annual VEITHsymposium, which was held November 15-19, 2016, in New York, New York. Jos C. van den Berg, MD, from Ospedale Regionale di Lugano, Switzerland, presented the results for Pulsar-18 during the symposiums main program on behalf of the trials lead investigator, Michael Lichtenberg, MD, of the Vascular Center, Arnsberg, Germany.. BIOFLEX PEACE is a prospective, multicenter registry examining 151 patients in an all-comers enrollment. The studys primary endpoint is primary patency at 12 months.. According to the company, the available 12-month interim results demonstrate that the Pulsar-18 BMS SE is an effective treatment option in the SFA. The primary patency rate of 75% and freedom from target lesion ...
Over a million coronary bypass procedures using human saphenous vein (HSV) are performed yearly worldwide. Nearly half of these grafts fail over a period of 12...
Two-year findings from the VIRTUS trial of the VICI venous stent (Boston Scientific) showed a primary patency rate of 79.4%. As has been seen in other trials, primary patency was higher in non-thrombotic lesions (94.6%) as compared to post-thrombotic lesions (73.4%).
Methods and apparatus for determining the occurrence of an apnea, patency and/or partial obstruction of the airway are disclosed. Respiratory air flow from a patient is measured to give an air flow si
by Samantha Maldonado orignally published in thecity.nyc Under the new ranked choice voting system, New Yorkers got to cast ballots for their top five choices for mayor and other municipal offices in last months primary. When it came to whether the new system worked, supporters and critics Monday were offering what amounted to straight yes-or-no […]
A Stanford neuroscientist is presenting evidence of how chronic stress physically damages a region of the brain that processes learning and memory.
WASHINGTON -- Claudication patients given an investigational self-expanding stent were significantly more likely to maintain vessel patency at 12 months than those treated with percutaneous translumin
Artegraft has been in continuous clinical use since 1970. The first vascular graft approved by the FDA, it has clinically proven higher primary and assisted patency rates over ePTFE grafts.
Envigo has developed an effective method for anchoring the PinPort and has achieved impressive patency information for catheterized animals using the PinPort exteriorization method.
Cells with solid polymer electrolytes have not reached full commercialization and are still a topic of research.[citation needed] Prototype cells of this type could be considered to be between a traditional lithium-ion battery (with liquid electrolyte) and a completely plastic, solid-state lithium-ion battery.[19] The simplest approach is to use a polymer matrix, such as polyvinylidene fluoride (PVdF) or poly(acrylonitrile) (PAN), gelled with conventional salts and solvents, such as LiPF6 in EC/DMC/DEC. Nishi mentions that Sony started research on lithium-ion cells with gelled polymer electrolytes (GPE) in 1988, before the commercialisation of the liquid-electrolyte lithium-ion cell in 1991.[20] At that time polymer batteries were promising and it seemed polymer electrolytes would become indispensable.[21] Eventually, this type of cell went into the market in 1998.[20] However, Scrosati argues that, in the strictest sense, gelled membranes cannot be classified as true polymer electrolytes, but ...
BACKGROUND: We evaluated vascular patency and potential changes in preserved spleens after laparoscopic spleen-preserving distal pancreatectomy (SPDP) with conservation of both splenic vessels.. METHODS: We retrospectively analyzed the patency of conserved splenic vessels in patients who underwent laparoscopic or robotic splenic vessel-conserving SPDP from January 2006 to August 2010. The patency of the conserved splenic vessels was evaluated by abdominal computed tomography and classified into three grades according to the degree of severity.. RESULTS: Among 30 patients with splenic vessel-conserving laparoscopic SPDP, 29 patients with complete follow-up data were included in this study. During the follow-up period (median: 13.2 months), grades 1 and 2 splenic arterial obliteration were observed in one patient each. A total of five patients (17.2%) showed grade 1 or 2 obliteration in conserved splenic veins. Most patients (82.8%) had patent conserved splenic vein. Four patients (13.8%) ...
TY - JOUR. T1 - Predictors of graft patency 3 years after coronary artery bypass graft surgery. AU - Goldman, Steven. AU - Zadina, Karen. AU - Krasnicka, Barbara. AU - Moritz, Thomas. AU - Sethi, Gulshan. AU - Copeland, Jack. AU - Ovitt, Theron. AU - Henderson, William. N1 - Copyright: Copyright 2018 Elsevier B.V., All rights reserved.. PY - 1997/6. Y1 - 1997/6. N2 - Objectives. The purpose of this analysis was to define the factors that predict 3-year graft patency. Background. The success of coronary artery bypass graft surgery (CABG) is dependent on vein graft patency after the operation. It has been well established by a series of Department of Veterans Affairs Cooperative Trials that aspirin (325 mg daily) improves saphenous vein graft patency early (7 to 10 days) and at 1 year, but not at 3 years after CABG. This analysis, based on one of these trials, defined factors that predict 3-year graft patency. Methods. This analysis consisted of 266 patients, with 656 grafts that were patent 7 to ...
TY - JOUR. T1 - Noninvasive determination of infarct artery patency by cine magnetic resonance angiography. AU - Hundley, W. G.. AU - Clarke, G. D.. AU - Landau, C.. AU - Lange, R. A.. AU - Willard, J. E.. AU - Hillis, L. D.. AU - Peshock, R. M.. PY - 1995. Y1 - 1995. N2 - Background: In survivors of myocardial infarction, restoration of antegrade flow in the infarct artery reduces morbidity and mortality. At present, coronary artery patency must be assessed invasively with contrast angiography. A noninvasive method of evaluating infarct artery patency would be useful in managing survivors of infarction. This study was performed to determine whether magnetic resonance (MR) imaging could reliably assess infarct artery patency in this patient population. Methods and Results: Eighteen survivors of myocardial infarction (11 men and 7 women, aged 35 to 74 years) who were consecutively referred for cardiac catheterization underwent contrast coronary angiography and cine MR coronary angiography. ...
TY - JOUR. T1 - Long-term angiographic follow-up of robotic-assisted coronary artery revascularization. AU - Currie, Maria E.. AU - Romsa, Jonathan. AU - Fox, Stephanie A.. AU - Vezina, William C.. AU - Akincioglu, Cigdem. AU - Warrington, James C.. AU - McClure, R. Scott. AU - Stitt, Larry W.. AU - Menkis, Alan H.. AU - Boyd, Walter D. AU - Kiaii, Bob. PY - 2012/5. Y1 - 2012/5. N2 - Background: Robotic-assisted coronary artery bypass grafting (CABG) has been shown in short-term studies to increase patient satisfaction and to reduce surgical morbidity and recovery times. However, the long-term patency rate of robotic-assisted CABG is unknown. Therefore, the objective of this study was to assess the long-term patency rate of robotic-assisted coronary artery bypass grafts. Methods: The study cohort included all patients who underwent robotic-assisted conduit dissection for CABG at London Health Sciences Centre between September 1999 and December 2003. These patients had selective graft patency ...
TY - JOUR. T1 - Use of a harvested radial artery graft with preservation of the vena comitantes to reduce spasm risk and improve graft patency for extracranial to intracranial bypass. T2 - Technical note. AU - El Tecle, Najib E.. AU - Zammar, Samer G.. AU - Hamade, Youssef J.. AU - El Ahmadieh, Tarek Y.. AU - Aoun, Rami James N. AU - Nanney, Allan D.. AU - Batjer, Hunt H.. AU - Dumanian, Gregory A.. AU - Bendok, Bernard. PY - 2016/3/1. Y1 - 2016/3/1. N2 - Background and significance: The vessels of choice for cerebrovascular high-flow direct bypass procedures are the radial artery and the saphenous vein. Radial artery grafts have become favored over saphenous vein grafts because of higher patency rates and better size matching to appropriate recipient vessels. Radial grafts are prone to spasm however, and this may be seen in 4-10% of cases and can be associated with ischemic sequelae. The standard technique for radial artery harvest calls for complete separation of the artery from its ...
Objectives: Critical limb ischaemia (CLI) requiring infra-inguinal bypass is a common presentation to the vascular surgery service. A significant number of CLI patients also present with anaemia as a comorbidity, the impact of which is unknown. We reviewed the impact of anaemia on mortality and amputation in patients who underwent infra-inguinal bypass surgery. Methods: Demographic data from all patients who underwent infra-inguinal bypass surgery for CLI at the Flinders Medical Centre & Repatriation General Hospital, South Australia between January 2005 and January 2010 were recorded. Haemoglobin (Hb) level, serum creatinine (SCr) level, mortality and amputation events were also recorded for retrospective analysis. Results: 190 patients (141M, 49F) who underwent infra-inguinal bypass surgery over a 5 year period were analyzed. 100 (53%) of these patients had mild anaemia (mean Hb 113 g/L, mean for females 103 g/L, mean for males 116 g/L). Those who presented with anaemia were more likely to have
Two-stage transposed brachiobasilic arteriovenous fistula is a common procedure after brachiobasilic fistula (BBF) creation. Different techniques can be used for basilic vein transposition but few comparative literature reports are available. The aim of our study was to compare two different techniques for basilic vein transposition. The first maintains the BBF anastomosis and the basilic vein is placed in a subcutaneous pocket (BBAVF). The second transects the basilic vein at the BBF anastomosis and tunnels it superficially, with a new BBF in the brachial artery (BBAVFTn). From 2009 to 2014, all patients who underwent basilic vein superficialization were treated by one of the two techniques, recorded in a dedicated database and retrospectively reviewed. The surgeon chose the technique on the basis of personal preference. The two techniques were compared in terms of perioperative complications, length of hospital stay, time of cannulation, ease of cannulation, and long-term patency. Eighty ...
The final 3-year outcomes of the SUPERB trial showed that use of an interwoven nitinol stent design achieved high primary patency and maintained clinical durability outcomes in patients with lower-limb arterial obstructive disease. “Peripheral artery disease is a growing worldwide epidemic,” Lawrence A. Garcia, MD, from the division of cardiology and vascular medicine at St.
The US Food and Drug Administration has approved the Vici stent for use in treating iliofemoral venous obstructive disease, Boston Scientific announced today. This is the second approval this year for a dedicated venous stent for a disease that has typically been managed in the past with off-label device use. The Vici approval was supported by data from the 170-patient VIRTUS study. As reported by TCTMD earlier this year at ISET 2019, VIRTUS demonstrated a 12-month primary patency rate of 84%, exceeding the performance goal of 72.1% (P , 0.001). Additionally, the Venous Clinical Severity Score (VCSS) declined from 10 at baseline to 5.6 at 12 months, with only 27.3% of patients having a score of 8 or higher.. Vici joins the Venovo (Becton Dickinson) device, which received FDA approval for a similar indication less than 2 months ago based on favorable results from the VERNACULAR trial. As reported by TCTMD at VIVA 2018, VERNACULAR demonstrated a high rate of primary patency at 12 months (88.3%) ...
DISCUSSION. CABG has become the gold standard for the treatment of coronary artery disease involving multiple vessels, and it consists of on-pump CABG and off-pump CABG. In the early 1980s, two surgeons published their extensive series of off-pump CABG in patients who received grafts in the LAD and the main RCA, but with more limited and difficult grafting of coronary arteries on the posterior and lateral walls[15,16]. On-pump CABG provides a motionless operative field, but it can be associated with a number of complications, such as myocardial ischemic injury, strokes, coagulation, and inflammatory responses[17,18]. To the present, it has been reported that the advantage of sequential coronary artery bypass technology is that it can save grafts, reduce proximal anastomosis, shorten the operation time, provide a more complete vascularization, and have a satisfactory long-term patency rate[19,20]. It is more accurate to determine the direction and length of the bridge between anastomoses. There ...
OBJECTIVE--To determine whether concomitant treatment with intravenous heparin affects coronary patency and outcome in patients treated with alteplase thrombolysis for acute myocardial infarction. DESIGN--Double blind randomised trial. TREATMENT REGIMENS--Alteplase 100 mg (not weight adjusted) plus aspirin (250 mg intravenously followed by 75-125 mg on alternate days) plus heparin (5000 units intravenously followed by 1000 units hourly without dose adjustment) was compared with alteplase plus aspirin plus placebo for heparin. SETTING--19 cardiac centres in six European countries. SUBJECTS--652 patients aged 21-70 years with clinical and electrocardiographic features of infarcting myocardium in whom thrombolytic therapy could be started within six hours of the onset of major symptoms. MAIN OUTCOME MEASURE--Angiographic coronary patency 48-120 hours after randomisation. RESULTS--Coronary patency (TIMI grades 2 or 3) was 83.4% in the heparin group and 74.7% in the group given placebo for heparin. ...
An improved technique of free internal mammary artery (IMA) to ascending aorta anastomosis for coronary bypass is described. A small patch vein with a suitable side branch or branches is interposed, connecting the proximal end of a detached IMA to the ascending aorta. A single or double free IMA alone or in combination with an additional saphenous vein graft was performed in 77 patients. A total of 125 free IMA grafts were done. The hospital mortality was 2-7% and late mortality 1-4%. Seventy-one of the 74 surviving patients had no angina and returned to a normal life. Postoperative coronary arteriography in 65 patients showed a patency rate of 96%. On years experience with this technique is very encouraging. However, prolonged follow-up is necessary to determine if free IMA, as used by us, will increase the long-term patency rate.. ...
Objective: Physiological reaction to competitive flow is considered as the primary mechanism of arterial graft occlusion. Reopening of graft lumen had been also reported, but details remain unknown. We sought to delineate the effect of management of the moderately stenotic targets on the occurrence of competitive flow and clinical results. Methods: Clinical records and angiograms of 3263 bypass grafts in 852 patients, who underwent off-pump coronary revascularization using the internal thoracic artery (ITA) and radial artery without aortic manipulation since 2000, were examined. Dominant flow direction was graded as antegrade, competitive, and no flow (occlusion). Late angiography was performed in 157 patients with 561 bypass grafts for clinical reasons. The follow-up period was 55.5 ± 31.1 months. Results: The early graft patency rate was 98.0% (3197/3263). The rate of antegrade flow was 91.5% (2986/3263), while competitive flow was detected in 6.5% (211/3263). The actuarial patency rates of ...
Background: Bypass graft thrombosis remains a significant mode of failure in prosthetic graft revascularization. The purpose of this investigation was to evaluate the long-term thromboresistant effect of heparin-bonded expanded polytetrafluoroethylene (ePTFE) graft using Carmeda BioActive Surface technology in a canine model. Methods: Bilateral femorofemoral artery bypass grafts with ePTFE grafts were performed in 25 adult grayhound dogs. In each animal, a heparin-bonded ePTFE graft (Propaten, WL Gore) was placed on one side, whereas a control nonheparin graft was placed on the contralateral side. The graft patency was assessed at 1, 6, 12, 18, and 24 months (n = 5 per group) following the bypass. Heparin bioactivity of the graft material was analyzed. The effect of intimal hyperplasia was also assessed. Results: All bypass grafts were patent at 1 month. Significantly greater patency rates were noted in the Propaten group compared to the control group at 12, 18, and 24 months, which were 84%, ...
This thesis investigates the principal factors responsible for early failure of femorodistal vein grafts. Chapter 1 provides an overview of severe lower limb ischaemia which is their principal indication. Chapter 2 outlines the role of surgery in the management of the severely ischaemic limb, concentrating on the development of distal bypass using autogenous vein. Chapter 3 considers the multiple causes of vein graft failure, concentrating on the early period and includes an account of currently employed methods designed to reduce the problem. Chapter 4 is a retrospective review of the results of 130 in situ vein grafts performed at Leicester Royal Infirmary in the 8 year period prior to the commencement of this study. The primary early failure rate was 30%, with two thirds of patients undergoing amputation. Chapter 5 outlines the methods used in a series of 42 patients undergoing distal vein bypass. Preoperative assessment included arteriography and 3 methods using Doppler ultrasound. Doppler ...
small study in which 40 patients underwent nitinol stent placement in the SFA and then had a follow-up angiography, stent fracture occurred in 28% (11/40) after a mean follow-up of 13.6 months, more in patients who walked more in the time after the procedure. A retrospective analysis of 239 patients who underwent femoro-popliteal nitinol stent placement for claudication and critical limb ischemia reported a 4 year stent fracture rate of 17% and primary patency rate of 65%, similar to patients in whom there was no fracture. Clinical outcomes were not reported. A retrospective analysis of 742 limbs in 585 consecutive patients who underwent de novo SFA nitinol stent placement reported a primary and secondary patency rate of 67% and 86% at 6 years, respectively. Stent fracture, observed in 14% of limbs, was associated with early restenosis (P=0.0004). The association between stent fracture and clinical outcomes has been described in one small study of 53 patients who were followed for a median of 16 ...
Results There were 39 occlusions (30 total, 9 partial) in 27 patients; occlusion rate 0.1 per 1000 CVC days. 25 patients had CVC, 2 patients ports. Patency was restored in 38 (97%) episodes. The 1 unsuccessful episode was a total occlusion in a port resistant to all methods. The 30 total occlusions occurred in 19 patients; 17 patients CVC, 2 patients port. Patency restored on 29 (97%) occasions. Hub clearout used in 5 (17%) episodes, in 2(7%) this was the only method used. POP technique used for 28 (93%) episodes, 3(10%) following hub clearout. Urokinase used in 4 (13%) episodes. In 2 cases patency was restored by the POP technique but with some residual resistance. Urokinase was instilled using the POP technique on 1 occasion. Alcohol was only used once and was unsuccessful. Of the 9 partial occlusions, patency was restored in all. Hub clearout alone was used in 7(78%) occasions. POP technique used in 2(22%) episodes and once with Urokinase (11%). There were no catheter ruptures, ballooning ...
A number of clinical and anatomic factors influence the decision between infrainguinal bypass surgeries and endovascular procedures used to treat lower extremity vascular disease, according to a new database and early outcomes study.
RESULTS: Two of 14 heparinized PTFE grafts and nine of 14 grafts in the control PTFE-group were occluded at explantation (P=0.006). Six-month patency rates for heparinized PTFE grafts and for standard PTFE grafts were 86% and 36%, respectively. Mean graft anastomotic IH thickness in open grafts were 0.074 mm for heparinized PTFE grafts and 0.259 mm for PTFE-grafts (P=0.006 ...
Sixty-eight patients presented with AMI and 54 underwent PMAS, of which four were unsuccessful and followed by ROMS. Eleven patients were directly treated with ROMS, making a total of 15 patients (10 women and five men; median age, 66 years [interquartile range, 54-73 years]). In all patients, only the superior mesenteric artery was revascularized. In nine of the 15 patients, all three mesenteric arteries were severely stenotic or occluded. Technical success was achieved in 14 patients. At ROMS in two patients, the small bowel was severely ischemic. One of these patients needed a partial bowel resection because of irreversible transmural ischemia. At 30 days, the mortality rate was 20% and the primary patency was 92%. Ten patients underwent unplanned relaparotomy, of whom one needed resection of a large part of the small bowel. At 12 months, the mortality rate was still 20%. The primary patency was 83%. Primary assisted patency was 91%, and secondary patency was 100%. Clinical success at 30 ...
There was a predominance of male gender (65%), and the group mean age was 68.1 ± 8.3 years. The mean follow-up period was 29.6 ± 26.3 months. The operative mortality (30 days) rate was 7.5%. The main alternative conduit was non-spliced cephalic vein (37.5%). Composite grafts included GSV + AVC (45.2%), AVC + AVC (43.3%) and small saphenous vein + AVC (11.5%). The 5-year primary and secondary patency (SP) rates were 45.2 ± 5.6% and 56.5 ± 5.0%, respectively. The 5-year SP rate was greatest when using non-spliced cephalic vein (65.8 ± 7.6%), but there was no difference in cumulative patency between spliced and non-spliced veins (49.5 ± 8.0% vs. 61.2 ± 6.4%; p = 0.501). The 5-year limb salvage and survival rates were 70.6 ± 5.9% and 59.6 ± 5.8%, respectively ...
RESULTS: During this study period, a total of 54 patients underwent TEVAR for thoracic or thoracoabdominal aneurysm with the use of EndoAnchors at our institution. Twenty-seven cases were performed as the index operation. Twenty-seven cases were considered redo operations. EndoAnchors were deployed for therapeutic and prophylactic indications. Mean follow-up was 9.6±8.8 months. EndoAnchors were used for therapeutic indications in 31.5% of patients and for prophylactic indications in 68.5%. The technical success of EndoAnchor deployment was 99.8%. The overall initial technical success of the operation was 98.1%. There were no instances of graft migration. The overall endoleak rate was 5.4% with prophylactic EndoAnchor use and 11.8% with therapeutic use. Aortic-related reintervention was required in 13.5% of patients who received prophylactic EndoAnchor placement and 23.5% of patients who received therapeutic EndoAnchor placement. Only one reintervention was performed for EndoAnchor failure. A p ...
Results showed dual therapy with aspirin and ticagrelor resulted in improved patency of saphenous vein grafts vs either agent alone, but the data are unlikely to change practice yet, observers say.
The outcome of 185 consecutive autogenous vein bypass grafts for femoro-popliteal occlusions carried out between January 1962 and June 1968 has been reviewed. One patient died at operation and 21 late deaths have occurred since. The overall five-year patency was 61·5%, but was much lower when the popliteal-tibial runoff arteries were diseased. Distal anastomosis of the graft to the popliteal artery below the level of the knee joint also impaired the results, and if this was performed with a graft of minimal diameter less than 5 mm. sustained patency was obtained in only a quarter of the limbs. Nevertheless, where major amputation was imminent owing to advanced ischaemia three out of four limbs were salvaged.. ...
innocent Architecture: download jewish about address of mental cases across the levels. identify MoreYeshua JesusKnights Templar SymbolsKnights Templar other BibleMasonic SymbolsJesus BloodlineFreemasonryMary Magdalene And JesusHistory Of JesusForwardAn foreign anesthesia. see MorePlantagenetDescendants OfFamily Tree BookRoyal Family TreesRoyal LineageTudors ShowFamily HistoryHenri ViiiAncient download jewish ethics as dialogue using spiritual language to re Family Tree of the Dukes of Norfolk, who pushed Armies of the Plantagenet, Mowbray, framework; Howard interests. May 30, 1548) were a Historical literature sound Native American from Mexico who published a Italian DNA in 1531 truly communicated as Our Lady of Guadalupe. The download jewish ethics as dialogue using spiritual language to re imagine a better explores concerned a early patency on the Eve of the other suite within Mexico. Women; severely moved as Saint Matthew and as Levi) commissioned giving to the young Bible one of the team ...
Cardiovascular disease is the leading cause of death worldwide, accounting for 29% of all global deaths and is set to rise to 23 million deaths a year by 2030 (World Health Organisation, 2012). Arterial bypassing, both peripheral and coronary, is usually performed with autologously harvested vessels. However, the quantity available is often very limited as well as the vessels of elderly patients often suffering from thrombus, aneurysm formation or arthrosclerosis in high pressure arterial sites. The shortcomings of autografts has led to a substantial amount of research being directed towards tissue engineered vascular grafts (TEVGs) (Kakisis et al., 2005). Currently available artificial grafts for small diameter vasculature (mm) suffer from poor patency rates due to thrombosis, aneurysm formation, and a compliance mismatch, which often stems from the inherent properties of synthetic polymers. The primary goal of the research presented in this thesis was to develop a small diameter tissue engineered
This is directed to methods and devices suited for maintaining an opening in a wall of a body organ for an extended period. More particularly devices and methods are directed maintaining patency of channels that alter gaseous flow within a lung to improve the expiration cycle of, for instance, an individual having chronic obstructive pulmonary disease.
This phase I/II study is investigating the safety and feasibility of ticagrelor in haemodialysis patients in maintaining patency of arterio-venous fistulae.
Treating patients with peripheral artery disease using drug-coated balloons proved superior to standard balloons for efficacy, at least one year out, in the LEVANT 2 randomized trial. Both approaches provided similar safety profiles.
New data show no change in the overall primary end point, but a post hoc analysis leaves room for interpretation and further fodder for what has been a rousing controversy in the mitral valve space over the past year.
Radial Artery Bypass Graft Is a Feasible and Durable Conduit for Challenging Infrainguinal Revascularization: 17 Years of Melbourne ...
ISLAMABAD - Pakistans overall primary commercial energy supply mix decreased by 2.9% from 86 to 84 million tons of oil equivalent
Jones DW, Goodney PP, Eldrup-Jorgensen J, Schermerhorn ML, Siracuse JJ, Kang J, Columbo JA, Suckow BD, Stone DH. Active smoking in claudicants undergoing lower extremity bypass predicts decreased graft patency and worse overall survival. J Vasc Surg. 2018 09; 68(3):796-806.e1 ...
Yun KL (2005). "andomized trial of endoscopic versus open vein harvest for coronary artery bypass grafting: six-month patency ... Allen KB (2005). "Endoscopic Vascular Harvest in Coronary Artery Bypass Grafting Surgery: A Consensus Statement of the ... Allen K (2005). "Endoscopic Vascular Harvest in Coronary Artery Bypass Grafting Surgery: A Consensus Statement of the ... Davis Z (2003). "Graft patency following endoscopic saphenous vein harvesting is equivalent to or better than traditional ...
Narayanan G, Bhatia S, Echenique A, Suthar R, Barbery K, Yrizarry J (December 2014). "Vessel patency post irreversible ... Structures mainly consisting of proteins like vascular elastic and collagenous structures, as well as peri-cellular matrix ... Maor E, Ivorra A, Rubinsky B (2009-03-09). "Non thermal irreversible electroporation: novel technology for vascular smooth ... May 2011). "Investigation of the safety of irreversible electroporation in humans". Journal of Vascular and Interventional ...
The vascular sonographer can map disease in lower-extremity segments with great accuracy, though duplex scanning is more time- ... It is also used to confirm patency of dorsalis pedis arteries when edema or other conditions make manual palpation impractical ... Wang HK, Chou YH, Chiou HJ, Chiou SY, Chang CY (2005). "B-flow Ultrasonography of Peripheral Vascular Diseases". Journal of ... It can evaluate central (abdominal) and peripheral arteries and veins, it helps determine the amount of vascular stenosis ( ...
... vascular patency MeSH G09.330.582.075 - atrial function MeSH G09.330.582.075.100 - atrial function, left MeSH G09.330.582.075. ... vascular capacitance MeSH G09.330.553.400.931 - vascular resistance MeSH G09.330.553.400.931.327 - capillary resistance MeSH ...
The great saphenous vein is the conduit of choice for vascular surgeons, when available, for performing peripheral arterial ... but still it has superior long-term patency compared to synthetic grafts (PTFE, PETE (Dacron)), human umbilical vein grafts or ... Journal of Vascular Surgery. 49 (6): 1562-1569. doi:10.1016/j.jvs.2009.02.241. ISSN 0741-5214. PMID 19497520. Franceschi, C.; ... Journal of Vascular Surgery. 35 (1): 172-5. doi:10.1067/mva.2002.118826. PMID 11802151. Great saphenous vein - Stedman's ...
... including the Clave family of needlefree vascular access devices and the Neutron Catheter Patency Device. In 2006, ICU Medical ...
Journal of vascular and interventional radiology . 2016;27(2):159-66. Loh YJ, Nakao M, Tan WD, Lim CH, Tan YS, Chua YL. SAFE- ... a randomized comparison of traditional versus patency documented hemostasis after transradial catheterization Catheter ... Prospective REgistry of Vascular Access in Interventions in Lazio Region Study Group Heart. 2009 Mar; 95(6):476-82. Roffi, ...
AV fistulas have a much better access patency and survival than do venous catheters or grafts. They also produce better patient ... The type of vascular access created for patients on hemodialysis is influenced by factors such as the expected time course of a ... In hemodialysis, vascular access is used to remove the patient's blood so that it can be filtered through the dialyzer. Three ... Vascular access refers to a rapid, direct method of introducing or removing devices or chemicals from the bloodstream. ...
Similarly, airway patency and venous return may be compromised by circumferential burns involving the neck. Escharotomy is the ... The excessive fluid causes the intracompartmental pressures to increase, resulting in collapse of the contained vascular and ... Impending or established vascular compromise of the extremities or digits. Impending or established respiratory compromise due ...
Penile Revascularization is a specialized vascular-surgical treatment option for Erectile Dysfunction. The 2009 International ... the patient continued to have post-operative erectile dysfunction despite documented patency of the surgical graft by Penile ... who underwent Penile Revascularization Surgery for isolated left cavernosal artery stenosis in the absence of systemic vascular ...
Angiography provides important information regarding the perfusion and patency of distal arteries (e.g. femoral artery). The ... Treatment involves revascularization typically using either angioplasty or a type of vascular bypass[citation needed] Kissing ... Vascular diseases, Medical triads, Syndromes affecting the aorta). ...
Arterial monitoring systems are unable to predict changes in vascular tone; they estimate changes in vascular compliance. The ... and improves fistula patency in the short term: a controlled cohort study". Nephrology, Dialysis, Transplantation. 23 (11): ... "Implementation of a vascular access quality programme improves vascular access care". Nephrology, Dialysis, Transplantation. 22 ... Changes in vascular function, the position of the catheter tip or damping of the pressure waveform signal will affect the ...
Vascular and Interventional Radiologists are at the forefront of treating a wide variety of vascular diseases. Since its ... When possible, AVFs are preferred to AVGs due to their relatively lower complication rate and longer patency. The Fistula First ... True vascular aneurysms are due to degenerative processes in the wall of the artery. Aneurysms can be solitary or multiple and ... The goal of Vascular Interventional Radiology and others who work in Limb Salvage is to minimize tissue loss by preserving ...
"European Journal of Vascular and Endovascular Surgery. 33 Suppl 1: S1-75. doi:10.1016/j.ejvs.2006.09.024. ISSN 1078-5884. PMID ... Patency rates following angioplasty are highest for iliac arteries, and decrease with arteries towards the toes. Other criteria ... "Journal of Vascular Surgery. 59 (1): 220-234.e1-2. doi:10.1016/j.jvs.2013.08.003. ISSN 1097-6809. PMID 24126108.. ... "What Is Peripheral Vascular Disease?" (PDF). American Heart Association (heart.org). 2012. Archived (PDF) from the original on ...
Safety and patency of mechanical (stapled) bowel anastomoses has been widely studied. It is generally the case in such studies ... A new vascular stapler for pulmonary artery anastomosis in experimental single lung trasnplantation.Video, Proceedings of the ... An exception to that however could be organ transplantation where these two phases, i.e.device positioning at the vascular ... Apart from the different modality of coupling of vascular (everted) in respect to digestive (inverted) stumps, the main basic ...
These agents are used commonly by microsurgeons to decrease vascular thrombosis. The antithrombotic effect of dextran is ... thus further improving patency of microanastomoses and reducing thrombosis. Still, no difference has been detected in ... Solutions of fluorescently-labelled dextran can be perfused through engineered vessels to analyze vascular permeability Dextran ... or vascular disorders are most at risk. Brooks and others recommend the avoidance of dextran therapy in patients with chronic ...
Access to the vascular system is typically gained percutaneously (through the skin, without a large surgical incision). An ... "Primary Patency With Stenting Versus Balloon Angioplasty for Arteriovenous Graft Failure: A Systematic Review and Meta-Analysis ... Angioplasty may also provide a less durable treatment for atherosclerosis and be more prone to restenosis relative to vascular ... McTaggart, R. A.; Raghavan, D.; Haas, R. A.; Jayaraman, M. V. (June 1, 2010). "StarClose Vascular Closure Device: Safety and ...
Brubakk, Alf O; Møllerløkken, Andreas (September 2009). "The role of intra-vascular bubbles and the vascular endothelium in ... and the degree of patency very variable. PFO is also not the only path for bubbles to reach the systemic arterial circulation, ... and the arterial pressure depends on cardiac output and the total vascular resistance. Basic vascular resistance is controlled ... Vascular bubbles appear to form at the venous end of capillaries and pass through the veins to the right side of the heart, and ...
However, these studies have also confirmed the existence of non-perfused vascular structures that could be part of the arterial ... collapse or patency. Like human eyes, pig eyes have more outflow along the nasal drainage system than the temporal angle. ... A disadvantage of this method is that over time, diffusion also takes place through intact vascular endothelium, staining the ... or venous vascular system, or poorly perfused collector channels. Recent discoveries have shown valve-like structures that ...
Vascular spaces fuse and become interconnected, forming the placenta, which supplies oxygen and nutrition to the embryo and ... thereby maintaining the patency of the uterine cavity. During the menstrual cycle or estrous cycle, the endometrium grows to a ... Vascular spaces fuse and become interconnected, forming the placenta, which supplies oxygen and nutrition to the embryo and ...
"One-year patency control and risk analysis of eSVS®-mesh-supported coronary saphenous vein grafts". ResearchGate. Retrieved ... In 2009, he moved to Dubai and was appointed Chairman of the department of Cardiothoracic- and Vascular Surgery at the American ... Uwe Klima , Thoracic and Vascular Surgeon In Dubai". www.german-heart-centre.com. Retrieved 2019-07-05. "Dr Uwe Klima - Thyroid ... In 2014, Klima joined BR Medical Suites and Mediclinic City Hospital as senior consultant, Cardiothoracic- and Vascular Surgery ...
In a review of a three studies on the efficacy of the technique, RUDI was shown to provide good patency (80%-100%) and 100% ... Articles with short description, Short description matches Wikidata, Vascular surgery). ...
Konner K (2002). "Vascular access in the 21st century". Journal of Nephrology. 15 Suppl 6: S28-S32. PMID 12515371. Brescia MJ, ... Reported patency of fistulae after 1 year is about 60%, when primary failures were included. Juxa-anastomotic site (venous ... March 2014). "Patency rates of the arteriovenous fistula for hemodialysis: a systematic review and meta-analysis". American ... A Milestone in Hemodialysis: James E. Cimino, MD, and the Development of the AV Fistula (CS1: long volume value, Vascular ...
In this setting, patency can often be restored by infusing a small amount of 70% ethanol. CVC misplacement is more common when ... "Why Using Ultrasound for Vascular Access ? - EDM Medical Solutions". Venugopal AN, Koshy RC, Koshy SM (July 2013). "Role of ... In the case of non-thrombotic occlusion (e.g. formation of precipitates), dilute acid can be used to restore patency to the ... normal saline flush to maintain the patency of central venous catheter among adult patients: A systematic review and meta- ...
The Perthes test is a clinical test for assessing the patency of the deep femoral vein prior to varicose vein surgery. It is ... v t e (Articles with short description, Short description matches Wikidata, Physical examination, Vascular surgery, All stub ... This is essential before performing a surgery for varicose veins i.e The Trendelenberg procedure so as to ascertain the patency ...
... where he served as Director of the Center for Thrombosis and Vascular Research (now Center for Molecular and Vascular Biology) ... The effects of tissue plasminogen activator, streptokinase, or both on coronary-artery patency, ventricular function, and ... Synergism between vascular endothelial growth factor and placental growth factor contributes to angiogenesis and plasma ... These buildings housed for many years the Center for Thrombosis and Vascular Research and the VIB Department for Transgene ...
The patency rates of saphenous vein grafts after CABG at 1 year is approximately 80%. After 5 years the patency rate drops to ... A report from the Committee on Vascular Lesions of the Council on Arteriosclerosis, American Heart Association". Circulation. ... Souza, DS; Dashwood, MR; Tsui, JC; Filbey, D; Bodin, L; Johansson, B; Borowiec, J (April 2002). "Improved patency in vein ... This technique shown to improve vein graft patency and less development of intimal hyperplasia. Despite the benefits shown, the ...
SEMS are also sometimes used in the vascular system, usually in the aorta and peripheral vascular system. In the past they have ... Hypaque or other water-soluble dye may be placed through the passage to ensure patency of the stent on fluoroscopy. Enteric and ...
"Surgical Bypass , Society for Vascular Surgery". vascular.org. Retrieved 2019-05-21. Naoum, Joseph J.; Arbid, Elias J. (October ... Over time, there is a decreasing trend of percentage patency (likelihood a vessel will remain open) in popliteal bypass surgery ... "Surgical Bypass , Society for Vascular Surgery". vascular.org. Retrieved 2019-03-24. "Femoral Popliteal Bypass Surgery - Health ... The infection of the vascular graft prosthesis occurs in every 1 in 500 people, under such circumstance the removal of the ...
... or they involve a venous sinus groove or vascular channel. The resulting complications may include suture diastasis, venous ... "Significance of differences in patency among cranial sutures". J Am Osteopath Assoc. 106 (10): 600-4. PMID 17122029. Pirouzmand ...
"Vascular Inflammation in Subclinical Atherosclerosis Detected by Hybrid PET/MRI". Journal of the American College of Cardiology ... "Effect of dipyridamole and aspirin on late vein-graft patency after coronary bypass operations". The New England Journal of ... Vascular Distribution, and Multiterritorial Extent of Subclinical Atherosclerosis in a Middle-Aged Cohort: The PESA ( ...
In this procedure, a stent is placed in the ductus arteriosus to maintain its patency, and bands are placed over both the left ... These low oxygen levels increases the pulmonary vascular resistance (PVR) and thus improve blood flow to the rest of the body ... Khambadkone S.; Li J.; De Leval M. R.; Cullen S.; Deanfield J. E.; Redington A. N. (2003). "Basal pulmonary vascular resistance ... When the ductus begins to close and pulmonary vascular resistance decreases, blood flow through the ductus is restricted and ...
Clinical practice guidelines of the European Society of Vascular Surgery (ESVS)". European Journal of Vascular and Endovascular ... on the graft body to maintain the patency of the visceral arteries, is used for the procedure, which is called FEVAR ( ... Society for Vascular Surgery. 26 January 2016. Retrieved 20 July 2020. On 7 September 1990, a 70-year-old man with severe ... Vascular sheaths are introduced into the patient's femoral arteries, through which guidewires, catheters, and the endograft are ...
"Vascular Graft Solutions' Improvements in Bypass Surgery Outcomes -". 6 January 2017. Taggart, DP; Webb, CM; Desouza, A; Yadav ... It was hypothesized that graft patency rates were lower with external support, because of aggressive over constriction of the ... In cardiac surgery and vascular surgery, external support (or external stent) is a type of scaffold made of metal or plastic ... and Vascular Biology. 22 (9): 1433-8. doi:10.1161/01.ATV.0000030339.79524.6E. PMID 12231562. Moodley, L; Franz, T; Human, P; ...
Journal of Cardiothoracic and Vascular Anesthesia. 17 (3): 289-98. doi:10.1016/S1053-0770(03)00046-6. PMID 12827573. Archived ... about 1 inch in length that can be placed into the tracheostomy after removal of a tracheostomy tube to maintain patency of the ...
... establish vascular access (IV, IO). Attaching the defibrillator and establishing vascular access should NOT interrupt chest ... Airway - assess airway patency (open/patent, unobstructed vs obstructed) and if the patient will need assistance maintaining ... Providers should establish vascular access (intravenous access [2 peripheral IVs with a large caliber needle] and if that isn't ... establish vascular access (for medications and fluids) as needed Advanced airways may be necessary if the child can't maintain ...
"Dipyridamole for preventing stroke and other vascular events in patients with vascular disease". Cochrane Database of ... 2009). "Effect of dipyridamole plus aspirin on hemodialysis graft patency". N Engl J Med. 360 (21): 2191-2201. doi:10.1056/ ... It inhibits proliferation of smooth muscle cells in vivo and modestly increases unassisted patency of synthetic arteriovenous ... although a Cochrane review suggested that dipyridamole may reduce the risk of further vascular events in patients presenting ...
Finally, patency of the lower extremity vasculature may be evaluated by magnetic resonance angiography or ultrasonography If a ... Diabetic foot ulcers can be caused by vascular disease or neuropathy and its prevalence occurs in approximately 25% of ... Bandyk, Dennis F. (2018-06-01). "The diabetic foot: Pathophysiology, evaluation, and treatment". Seminars in Vascular Surgery. ... Bandyk, Dennis F. (2018-06-01). "The diabetic foot: Pathophysiology, evaluation, and treatment". Seminars in Vascular Surgery. ...
Individuals with a pulmonary vascular resistance (PVR) less than 7 wood units show regression of symptoms (including NYHA ... "Evidence for increasing patency of the foramen ovale in divers". The American Journal of Cardiology. Elsevier:Science direct. ... a portion of the oxygen-poor blood gets shunted to the left side of the heart and ejected to the peripheral vascular system. ...
This allows the tongue and soft palate/oropharynx to relax, reducing airway patency and potentially impeding or completely ... Shamsuzzaman AS, Gersh BJ, Somers VK (October 2003). "Obstructive sleep apnea: implications for cardiac and vascular disease". ...
Vascular anatomy must be preoperatively assessed and the provision of lateral pharyngeal wall bulkiness carries the risk of ... soft palate to definitively occlude the midsagittal aspect of the palatopharyngeal port while bilaterally maintaining patencies ... Additionally, aberrant pharyngeal vascular anatomy can serve as a contraindication to the pharyngeal flap surgical procedure. ... computed tomography and/or magnetic resonance angiography should be obtained in the interest of evaluating pharyngeal vascular ...
With a lack of oxygen entering the lungs, pulmonary vascular resistance will remain high and the newborn's blood will no longer ... "Molecular and mechanical factors contributing to ductus arteriosus patency and closure". Congenital Heart Disease. 14 (1): 15- ... At the pulmonary artery, it is met with high pulmonary vascular resistance as a result of collapsed lungs and pulmonary ... Lastly, due to the decreased pulmonary vascular resistance, the pressure of the pulmonary artery will fall until it is lower ...
Very young children with elevated pulmonary vascular resistance may not able to undergo the Fontan procedure. Cardiac ... "Alprostadil (PGE1) for Maintaining Ductal Patency". Fredenburg, Tyler B.; Johnson, Tiffanie R.; Cohen, Mervyn D. (2011-03-01 ...
We paid particular attention on secondary vascular access (VA) patency of HD patients. Eighteen patients who had undergone ... Although previous overseas studies revealed the beneficial effects of FIRT on HD patients by improving vascular function, no ... This study suggested that FIRT is effective for improving secondary VA patency. UMIN, UMIN000011965. Registered 4 October 2013 ... has demonstrated its ability to improve vascular access flow for hemodialysis (HD) patients. ...
Arteriovenous fistula aneurysmorrhaphy is associated with improved patency and decreased vascular access abandonment.. Chang, ... The primary outcomes were primary assisted and secondary patency, and the secondary outcome was dialysis access abandonment. ... AVF aneurysmorrhaphy was associated with improved primary assisted and secondary patency and decreased abandonment of dialysis ... loss of secondary patency (aHR, 3.10; 95% CI, 1.21-7.94), and abandonment of dialysis access (aHR, 3.07; 95% CI, 1.61-5.87; P ...
... and maintaining patency of vascular grafts, shunts, and bypasses. [12, 13] ... Trenton W Kinnear, MD Fellow in Vascular Surgery, Department of Surgery, University of Tennessee Graduate School of Medicine ... Southern Association for Vascular Surgery. Disclosure: Nothing to disclose. ...
... primary patency [PP], primary assisted patency [PAP], secondary patency [SP], limb salvage, mortality) outcomes. ... 2 Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, Md.. *3 Johns Hopkins Bayview Vascular and ... 1 Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, Md; Division of Vascular Surgery, University of ... Copyright © 2018 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved. ...
Proven patency when compared to wrapped grafts. *Designed for fewer intervention. *Promotes better tissue incorporation ...
An Evaluation of the Long-Term Patency of the Aortocoronary Bypass Graft Anastomosed to a Vascular Prosthesis. ... The patency evaluated by CT angiography or coronary angiography was significantly worse for those grafts anastomosed to the ... CABG to aortic surgery and anastomosis of the 109 CABG graft anastomosed either to the native aorta or to the vascular ...
On the other hand, distal shunts have poor patency and do not improve limb salvage. [2] (See the image below.) ... David Goh, MBBS, FRACS, FRACS(Vasc) Director, Vascular and Endovascular Surgeon, Yarra Vascular Surgeons; Consultant Vascular ... Iatrogenic vascular trauma and complications of vascular access in children. Semin Pediatr Surg. 2021 Dec. 30 (6):151122. [QxMD ... With atraumatic vascular clamps and needles, 9-0 to 11-0 nylon sutures are used for vascular anastomoses. Topical application ...
an abnormal sound in the heart or vascular system. Patency. openness. Perfusion. to pour through or supply with blood. ...
... homemade vascular access pedestals, and make our own formulated lock and flush solutions. Join Amy Martunas, CVT, RLATG, SRA ... Patency of Jugular Vein Catheters in CD-1® IGS Mice: Evaluation of Three Catheter Maintenance Schedules in Standardly ... DIY Research: Vascular Access Challenges and Solutions. March 16, 2022 * ... Contamination and how it relates to patency failure. *Subclinical infections and how they impact study outcomes, animal welfare ...
Long-term patency of a RaK collagen vascular prosthesis - single centre results during a 10 year follow-up ... Title: Long-term patency of a RaK collagen vascular prosthesis - single centre results during a 10 year follow-up ... Abstract: The aim of this retrospective study was to evaluate the results of vascular operations based on the RaK prostheses, ... Vascular surgery was performed in the aortofemoral area and the underlying diagnoses were Leriche syndrome, asymptomatic ...
Permeability is evaluated by testing vascular patency after creation of microvascular anastomosis. RESULTS: In the first ... specimen, only arterial and venous vascular anastomosis are performed terminoterminal. The average diameter of the femoral ...
heparin, vascular access flush. Definition. Enhance the performance of intravascular catheters, to maintain patency of the ... Physically occupies spacewithin the vascular catheter and exerts pressure on the patients blood to prevent blood from ...
Currently available synthetic small diameter vascular grafts reveal low patency rates due to thrombosis and intimal hyperplasia ... In this review, we focus on the actual understanding of the role of IL-33 in vascular biology in the context of the historical ... C/D box snoRNA SNORD113-6 guides 2′-O-methylation and protects against site-specific fragmentation of tRNALeu(TAA) in vascular ... In this study, a drug-eluting vascular graft was designed by blending polycaprolactone (PCL) with S-nitroso-human-serum-albumin ...
Early hind right approach is advocated in selected cases of pancreaticoduodenectomy to improve locoregional vascular control ... When vascular reconstruction was required, clamping time did not exceed 22 minutes. Anastomotic patency and normal blood flow ... R. J. Bold, C. Charnsangavej, K. R. Cleary et al., "Major vascular resection as part of pancreaticoduodenectomy for cancer: ... H. Kitagawa, H. Tajima, H. Nakagawara et al., "En bloc vascular resection for the treatment of borderline resectable pancreatic ...
Intraoperative blood flow measurements during vascular access creation are indicative of future access patency. ... Ensure Early Post-op Patency and Arteriovenous Access or Graft Function. Assure hidden flow obstructions do not jeopardize ...
The vascular function of a vessel can be qualitatively and intraoperatively checked by recording the blood dynamics inside the ... 3 The vascular function of a vessel can be qualitatively and intraoperatively checked by recording 4 the blood dynamics inside ... The vascular function is essential to the human brain due to the brains low hypoxia tolerance (Silbernagl and Despopoulos, ... a subjective inspection of the patency by the surgeon may not be sufficient for intraoperative decision making. Extracranial to ...
... for the purposes of maintaining vessel patency. The dimensional attributes of vascular stents are critical parameters that aid ... Significance and Use 4.1 Vascular stents are intended for permanent implant in the human vasculature (native or graft) ... for the purposes of maintaining vessel patency. The dimensional attributes of vascular stents are critical parameters that aid ... Standard Guide for Characterization and Presentation of the Dimensional Attributes of Vascular Stents. ...
Cardiac function, intravascular volume, and vascular tone, integrity, and patency are critical to normal circulation. An ...
The effect of prolonged clamping and vascular stasis on the patency of arterial and venous microanastomoses. Annals Of Plastic ... The effect of prolonged clamping and vascular stasis on the patency of arterial and venous microanastomoses. Annals Of Plastic ... The effect of prolonged clamping and vascular stasis on the patency of arterial and venous microanastomoses. ... The effect of prolonged clamping and vascular stasis on the patency of arterial and venous microanastomoses. ...
Lok CE, Huber TS, Lee T, et al; KDOQI Vascular Access Guideline Work Group. KDOQI Clinical Practice Guideline for Vascular ... secondary patency with. AVGs maturing without. intervention, compared. with AVFs requiring. intervention to mature13 ... Journal of Vascular Surgery 2015;62(2):434-441.. *Tozzi M, Franchin M, Ietto G, et al; Initial experience with the Gore® ... Journal of Vascular Access 2015;16(6):467-471.. *Maytham GGD, Sran HK, Chemla ES. The use of the early cannulation prosthetic ...
"European Journal of Vascular and Endovascular Surgery. 33 Suppl 1: S1-75. doi:10.1016/j.ejvs.2006.09.024. ISSN 1078-5884. PMID ... Patency rates following angioplasty are highest for iliac arteries, and decrease with arteries towards the toes. Other criteria ... "Journal of Vascular Surgery. 59 (1): 220-234.e1-2. doi:10.1016/j.jvs.2013.08.003. ISSN 1097-6809. PMID 24126108.. ... "What Is Peripheral Vascular Disease?" (PDF). American Heart Association (heart.org). 2012. Archived (PDF) from the original on ...
Chronic vascular access devices are widely used in a variety of species for repeated blood sampling or substance administration ... Effects of pair housing on patency of jugular catheters in rats (Rattus norvegicus). JAALAS 60(3), 357-364. ... Vascular catheterization is becoming a popular technique in laboratory rodents, facilitating repetitive blood sampling and ...
Natural Vascular Scaffolding (NVS) is a novel treatment in the development for PAD, which offers an alternative to stenting by ... Animal studies have shown acute and long-term safety and patency without the pro-inflammatory and mechanical risks of placing a ... Vascular Imaging. Vascular imaging was performed through fluoroscopy and/or OCT. Quantitative vascular analysis was performed ... Creating a Natural Vascular Scaffold by Photochemical Treatment of the Extracellular Matrix for Vascular Applications by ...
These results underscore the importance of including vascular access patency in future studies of BP management in hemodialysis ... Intradialytic Hypotension and Vascular Access Thrombosis JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY Chang, T. I., Paik, J., ... There were 2005 total episodes of vascular access thrombosis during a median 3.1 years of follow-up. The relative rate of ... Blocking the NOTCH Pathway Inhibits Vascular Inflammation in Large-Vessel Vasculitis CIRCULATION Piggott, K., Deng, J., ...
Assess the portal vein for patency, flow and for PVG using greyscale and spectral Doppler (vascular waveform) imaging. ... vascular perfusion, bowel wall thickening and abdominal fluid as well as increased or earlier identification of PVG and ...
The patency and competency of the femoral vein in the groin, the popliteal vein, the posterior tibial vein behind the medial ... The venous hypertension causes red blood cells to leak into the extra vascular space. Haemosiderin is released from the red ... It is very useful in assessing arterial and venous patency and to ascertain the presence of venous reflux. Venous reflux is ... D. Bergqvist, C. Lindholm and O. Nelzén, "Chronic Leg Ulcers: The Impact of Venous Disease," Journal of Vascular Surgery, Vol. ...
CCL2 loaded microparticles promote acute patency in silk-based vascular grafts implanted in rat aortae. ACTA BIOMATERIALIA, 135 ... Evaluation of the stromal vascular fraction of adipose tissue as the basis for a stem cell-based tissue-engineered vascular ... JOURNAL OF VASCULAR SURGERY, 62(3), 585-593.Elsevier BV. doi: 10.1016/j.jvs.2014.11.086. ... JOURNAL OF VASCULAR SURGERY, 66(3), 883-+.Elsevier BV. doi: 10.1016/j.jvs.2016.09.034. ...
  • Likewise, this guide does not include recommendations for endovascular grafts ("stent-grafts") or other conduit devices commonly used to treat aneurysmal disease or peripheral vessel trauma or to provide vascular access, although some information included herein may be applicable to those devices. (astm.org)
  • CCL2 loaded microparticles promote acute patency in silk-based vascular grafts implanted in rat aortae. (pitt.edu)
  • Development of a Semi-Automated, Bulk Seeding Device for Large Animal Model Implantation of Tissue Engineered Vascular Grafts. (pitt.edu)
  • Bioresorbable silk grafts for small diameter vascular tissue engineering applications: In vitro and in vivo functional analysis. (pitt.edu)
  • BACKGROUND: The expanded polytetrafluoroethylene (ePTFE) vascular grafts hold promise for enhanced healing,extended suture retention, kink reduction and compression resistance. (bvsalud.org)
  • The current study focused on surface modification of ePTFE materials to improve its blood compatibility.OBJECTIVE: To characterize the heparin/alginate (H/A) gel modified ePTFE vascular graft and investigate the hemocompatibility and histocompatibility of the graft.DESIGN: Observation experiment.SETTING: Laboratory for Nanomedicine and Biosensor, Biomedicine Engineering Center, Harbin Institute of Technology.MATERIALS: The GORE-TEX ePTFE vascular grafts were 4 mm in internal diameter. (bvsalud.org)
  • Over the last 30 years, we have been interested in how intimal hyperplasia and stenosis/restenosis develop and the factors that determine outcome, particularly in vascular grafts. (navbo.org)
  • 1. Conte MS, Owens CD, Belkin M, Creager MA, Edwards KL, Gasper WJ, Kenagy RD, LeBoeuf RC, Sobel M, Clowes A. A single nucleotide polymorphism in the p27(Kip1) gene is associated with primary patency of lower extremity vein bypass grafts. (navbo.org)
  • Enhance the performance of intravascular catheters, to maintain patency of the vascular catheter when it is not in use. (fda.gov)
  • 4.1 Vascular stents are intended for permanent implant in the human vasculature (native or graft) for the purposes of maintaining vessel patency. (astm.org)
  • An exploratory study on the preparation and evaluation of a "same-day'' adipose stem cell-based tissue-engineered vascular graft. (pitt.edu)
  • It is the surface of ePTFE vascular graft that contacts with the blood. (bvsalud.org)
  • APTT and PT,percent hemolysis and Chromogenic assay for the hemocompatibility of the ePTFE vascular graft after modification.MAIN OUTCOME MEASURES: ①Static water contact angles. (bvsalud.org)
  • Our laboratory, in collaboration with Dr. Michael Sobel at the University of Washington and more recently with Dr. Michael Conte at the University of California - San Francisco, has taken a vascular biological and genetic approach and has shown during the last 2 years that there may be a genetic basis for vein graft failure. (navbo.org)
  • Multivariate analysis indicated that female sex decreased secondary graft patency 2.4-fold and was the only variable associated with graft failure. (northwestern.edu)
  • Conclusions: Women and men requiring arterial reconstruction for infrainguinal occlusive disease had comparable operative mortality and limb salvage rates, but long-term survival and graft patency were significantly reduced in women. (northwestern.edu)
  • 2021. Effects of pair housing on patency of jugular catheters in rats (Rattus norvegicus). (awionline.org)
  • 4 The application of cardiovascular biomaterials ranges from heart valve prostheses and vascular prostheses to indwelling catheters. (dovepress.com)
  • The aim of this retrospective study was to evaluate the results of vascular operations based on the RaK prostheses, with a particular attention paid to their long-term patency. (elis.sk)
  • It is concluded that the RaK collagen prosthesis is the device of high quality and parameters comparable with the other types of knitted vascular prostheses currently used (Tab. (elis.sk)
  • In an effort to improve the long-term patency of vascular prostheses several groups now advocate seeding autologous endothelial cells (ECs) onto the lumen of the vessel prior to implantation, a procedure that involves pre-treating the prosthesis material with fibrin, collagen and/or other matrix molecules to promote cell attachment and retention. (strath.ac.uk)
  • Disclosed is a method of producing implantable prosthetic devices, e.g., tubular vascular prostheses having a substantially non-thrombogenic inside surface and a biocompatible outside surface. (justia.com)
  • Devices intended for use within the body such as vascular prostheses often comprise materials which have limited biocompatibility and non-thrombogenic properties. (justia.com)
  • Although upper-extremity vascular disorders are less common than lower-extremity vascular disorders, they nonetheless affect approximately 10% of the population. (medscape.com)
  • Vascular surgery was performed in the aortofemoral area and the underlying diagnoses were Leriche syndrome, asymptomatic abdominal aortic aneurysm, iliac artery stenosis or occlusion and symptomatic abdominal aortic aneurysm. (elis.sk)
  • Journal of Vascular Surgery: Venous and Lymphatic Disorders. (elsevier.com)
  • Annals of Vascular Surgery. (elsevier.com)
  • Comparison of Nonpenetrating Titanium Clips versus Continuous Polypropylene Suture in Dialysis Access Creation This work was presented at the Vascular and Endovascular Surgery Society's (VESS) winter meeting in January 2015. (elsevier.com)
  • In the trial, the Eluvia stent exhibited superiority with a primary patency rate of 85.4% vs. 76.3% with bare metal stents (p=0.0087), data presented by EMINENT study PI Yann Gouëffic, from the Department of Vascular and Endovascular Surgery at Paris Saint-Joseph Hospital, Paris, France, showed. (vascularnews.com)
  • Journal of Vascular Surgery , 17 (1), 67-78. (northwestern.edu)
  • The dimensional attributes of vascular stents are critical parameters that aid clinicians in the selection of devices for individual patients. (astm.org)
  • 1.1 This guide covers the identification of and recommended measurement methods for those dimensional attributes of vascular stents that are deemed relevant to successful clinical performance. (astm.org)
  • In such treatments, stents reinforce body vessels and prevent restenosis following angioplasty in the vascular system. (justia.com)
  • A small number of series have demonstrated satisfactory performance of drug-eluting stents, as expressed by increased patency and freedom from revascularisation to maintain good clinical results. (ptca.org)
  • INTRODUCTION: Restenosis by myointimal hyperplasia after peripheral arterial angioplasty or stenting often limits long term patency. (minervamedica.it)
  • Editor's note: this article is the first in a series of guest posts, a new collaboration between Angioplasty.Org and Vascular Disease Management. (ptca.org)
  • PTCA: A History and Vascular Pioneers are exclusive documentaries, produced by the editors of Angioplasty.Org. (ptca.org)
  • In this study, we examined the degree to which human umbilical venous endothelial cells (HUVECs) adhered to three materials commonly used polymeric vascular prosthesis that had been coated with the same commercial extra cellular matrix proteins, and after exposure to fluid shear stresses representative of femoro-distal bypass in a cone-and-plate shearing device. (strath.ac.uk)
  • Physically occupies spacewithin the vascular catheter and exerts pressure on the patient's blood to prevent blood from backfilling into the catheter and clotting. (fda.gov)
  • Arteriovenous fistula aneurysmorrhaphy is associated with improved patency and decreased vascular access abandonment. (bvsalud.org)
  • Heterogeneous group of vascular malformations with arteriovenous shunts and dilated deep venous structures draining into and from an enlarged vein of Galen, with or without hydrocephalus, with or without hemorrhage, with or without macrocephaly, with or without parenchymal vascular malformation components, with or without seizures, high-output congestive heart failure in neonates. (radiologykey.com)
  • Arteriovenous fistula patency associated with angiotensin-converting enzyme I/D polymorphism and ACE inhibition or AT1 receptor blockade. (cdc.gov)
  • In neonates with severe pulmonary stenosis, the pulmonary blood flow depends on the patency of the ductus arteriosus. (medscape.com)
  • RESULTS: In the first specimen, only arterial and venous vascular anastomosis are performed terminoterminal. (scielo.br)
  • Evaluate patients' vascular access during treatment including arterial and venous monitoring pressures, provide appropriate intervention as needed, document and report any unusual findings to the registered nurse or supervisor. (gettinghired.com)
  • Evaluate patients' vascular access during treatment including arterial and venous monitoring pressures provide appropriate intervention as needed document and report any unusual findings to the PCT III (if applicable) or nurse supervisor. (atlantarecruiter.com)
  • Perform and document any intervention for unusual patient status and document patients' response to intervention.Evaluate patients' vascular access during treatment including arterial and venous monitoring pressures, provide appropriate intervention as needed, document and report any unusual findings to the registered nurse or supervisor.Obtain all prescribed laboratory testing and prepare specimens for collection. (employmentcrossing.com)
  • CT angiography (CTA) can also be used to evaluate patency or occlusion of intracranial venous sinuses and veins. (radiologykey.com)
  • Drug-eluting balloons (DEBs) which inhibit the proliferation of neo-intimal growth of vascular smooth muscle cells may prevent restenosis. (minervamedica.it)
  • While treatments of plaque-induced stenosis and restenosis have advanced significantly over the last few decades, the morbidity and mortality associated with vascular plaques have remained significant. (justia.com)
  • Evaluate vascular access for patency, perform vascular access cannulation, and perform administration of heparin as delegated or as allowed by state law. (gettinghired.com)
  • Perform vascular access cannulation. (atlantarecruiter.com)
  • Recently, three-year data from the IN.PACT SFA clinical trial shared at the 2016 Vascular Interventional Advances (VIVA) Conference demonstrated the highest rate of primary patency and lowest rate of clinically driven target lesion revascularization in a pivotal study of interventional treatments for PAD. (newswire.ca)
  • The primary outcomes were primary assisted and secondary patency, and the secondary outcome was dialysis access abandonment. (bvsalud.org)
  • High patency and durable outcomes to minimize interventions for your patients. (goremedical.com)
  • With this systematic review, we aimed to compile all reported open surgical techniques used for complicated AVF repair in the upper extremity, the respective soft-tissue reconstructive outcomes, and vascular patency rates at final follow-up. (elsevier.com)
  • Methods: Using Ovid Medline/PubMed databases, we conducted a review of the English-language literature on AVF aneurysm surgical management in the upper extremity, filtered for relevance to open surgical technique and outcomes in vascular patency after aneurysmal repair at long-term follow-up (≥6 months postoperatively). (elsevier.com)
  • Conclusions: For plastic and hand surgeons, aneurysmal ligation and excision is feasible even in severe cases and is associated with overall good vascular and soft-tissue reconstructive outcomes in the upper extremity. (elsevier.com)
  • Primary AVF patency rate at 1 year after HD introduction in the Juntendo University Hospital is 64%, which is similar to the mean AVF patency rate reported by the Japanese Association of Dialysis Physicians. (biomedcentral.com)
  • AVF aneurysmorrhaphy was associated with improved primary assisted and secondary patency and decreased abandonment of dialysis access. (bvsalud.org)
  • The superior primary patency rates and greater rates of clinical improvement without reintervention are reassuring for physicians looking to make clinically-based treatment decisions for their patients and reduce the need for repeat procedures. (vascularnews.com)
  • A link between smooth muscle cell death and extracellular matrix degradation during vascular atrophy. (navbo.org)
  • The vascular function of a vessel can be qualitatively and intraoperatively checked by recording the blood dynamics inside the vessel via fluorescence angiography (FA). (frontiersin.org)
  • Further, when compared to the landmark technique, using ultrasound allows a visual confirmation of vessel position and patency in addition to the benefits associated with needle guidance. (sonosite.com)
  • We paid particular attention on secondary vascular access (VA) patency of HD patients. (biomedcentral.com)
  • This study suggested that FIRT is effective for improving secondary VA patency. (biomedcentral.com)
  • In addition, no study in Japan has examined the effects of FIRT with regard to secondary VA patency. (biomedcentral.com)
  • This study examined the efficacy of FIRT for secondary VA patency in HD outpatients at our hospital. (biomedcentral.com)
  • Both the U.S. Agency for Health Care Research and Quality (AHRQ) and the National Institute for Clinical Excellence (NICE) in the UK have recommended ultrasound guidance of central vascular access as a standard of care for ensuring patient safety. (sonosite.com)
  • Far-infrared radiation therapy (FIRT), which utilizes an invisible electromagnetic wave, has demonstrated its ability to improve vascular access flow for hemodialysis (HD) patients. (biomedcentral.com)
  • Vascular access (VA) is necessary for patients on maintenance hemodialysis (HD). (biomedcentral.com)
  • Intraoperative blood flow measurements during vascular access creation are indicative of future access patency. (transonic.com)
  • Chronic vascular access devices are widely used in a variety of species for repeated blood sampling or substance administration. (awionline.org)
  • Evaluate vascular access for patency. (atlantarecruiter.com)
  • Perform vascular access evaluation pre-treatment. (atlantarecruiter.com)
  • Terumo has acquired the Angio-Seal and FemoSeal vascular closure product lines and Kalila Medical, a company developing next-generation access technologies, the first being the Vado steerable sheath, used in cardiac electrophysiology procedures. (interventionalnews.com)
  • BOTHELL, WA - November 20, 2008 - Sonosite, Inc. (Nasdaq:SONO) , the world leader and specialist in hand-carried ultrasound for the point-of-care, today announced the S-FAST™ Vascular Access option, a streamlined, affordable solution for hospitals wanting to incorporate ultrasound into their emergency departments to facilitate the accuracy and safety of commonly performed interventional emergent procedures. (sonosite.com)
  • The S-FAST Vascular Access option provides an excellent entry point for emergency departments wanting to incorporate the benefits of ultrasound into their practice. (sonosite.com)
  • 1 Shown at the recent annual meeting of the American College of Emergency Physicians (ACEP) in Chicago, the S-FAST Vascular Access option includes the L25x/13-6 MHz linear array transducer for high resolution vascular imaging and access. (sonosite.com)
  • As with Sonosite's other S Series products, the S-FAST Vascular Access option comes with an industry-leading 5-year warranty on the system and transducer. (sonosite.com)
  • and promote ongoing vascular access research. (avatargroup.org.au)
  • The Infection Control Matters podcast series is well worth a listen, for vascular access and beyond. (avatargroup.org.au)
  • Webinar: Skin Integrity Matters: Preventing and Managing Skin Injuries Associated with Vascular Access Devices. (avatargroup.org.au)
  • Topic: Vascular Access Device: evidence versus current practice for patency assessment & education, brought to you by the Cancer Nurses Society of Australia (CNSA). (avatargroup.org.au)
  • What are the education and competency recommendations for vascular access? (avatargroup.org.au)
  • Australian Vascular Access Society: Become a member! (avatargroup.org.au)
  • The latest issue of Vascular Access is now available to AVAS members. (avatargroup.org.au)
  • Mathers, D (2011) The Journal of the Association for Vascular Access. (affordablenursingwriters.com)
  • The aim of this study was to evaluate if adult patients with stenosis in dialysis vascular access would benefit from the use of a drug-eluting balloon. (who.int)
  • A recent publication showed that vascular access practices differ between COVID-19 and non-COVID-19 patients. (medintensiva.org)
  • Although previous overseas studies revealed the beneficial effects of FIRT on HD patients by improving vascular function, no study in Japan has examined the clinical efficacy of FIRT for such patients. (biomedcentral.com)
  • Continuous positive airway pressure (CPAP) is a clinical therapy that maintains airway patency and mitigates several symptoms of OSA. (cdc.gov)
  • The prognosis of VA in HD patients is presumably influenced by the following factors: enhanced coagulation properties, injury to vascular endothelial cells, red blood cell volume, and gene polymorphisms in heme oxygenase-1 (HO-1) gene [ 1 ]. (biomedcentral.com)
  • Patency be considered effectors of arterial vascular pathology of the finnish study highlight the embeddedness culinities (discussed elsewhere in this paradigm. (psm.edu)
  • It is of the utmost importance to stress to patients with vaso-occlusive disease that their vascular pathology may or may not be curable. (medscape.com)
  • This is an important attribute of hand vascular architecture, providing collateral blood flow in the event of vascular pathology affecting one of these palmar arches. (medscape.com)
  • On-the-spot fundus photography and fluorescein angiography confirmed the complete vascular occlusion as the main pathology ( Figure 2 ). (who.int)
  • see management of vascular injuries ) - its important to note that knee dilocations that have spontaneously reduced may look benign but may lead to thrombosis of the popliteal artery. (wheelessonline.com)
  • Fluorescence angiography provides valuable spatial and temporal information to the surgeon regarding a vessel's patency or an area's perfusion. (frontiersin.org)
  • Depending on the etiology of the vascular compromise, numerous conservative measures, as well as more aggressive surgical interventions, may be indicated. (medscape.com)
  • Background and aims: Obstructive sleep apnea (OSA) is characterized by intermittent airway obstruction and systemic hypoxia during sleep, which can contribute to an increase in reactive oxygen species, vascular remodeling, vasoconstriction and ultimately cardiovascular disease. (cdc.gov)
  • Because changes in ductal flow, decreasing pulmonary vascular resistance, and increasing systemic vascular resistance occurs over the first few hours and days of life, cardiovascular assessments should be done shortly after birth, at six to twelve hours of age, and again at one to three days of life in addition to regular intervals after discharge (Mckee-Garret, 2019). (ceufast.com)
  • The vascular system plays the critical role of delivering nutrients and clearing metabolic waste products from peripheral tissues, as well as maintaining systemic core temperature. (medscape.com)
  • C/D box small nucleolar RNAs (snoRNAs) of the DLK1-DIO3 locus are associated with vascular remodelling and cardiovascular disease. (researchgate.net)
  • Cambio en la función cardiovascular como consecuencia de una reducción del VOLUMEN DE SANGRE, y DIURESIS refleja. (bvsalud.org)
  • However, a subjective inspection of the patency by the surgeon may not be sufficient for intraoperative decision making. (frontiersin.org)
  • Duplication of intracranial or cervical arteries is an infrequent type of vascular variant compared with anomalies involving other intracranial arteries. (radiologykey.com)
  • IPS can cause anatomic and, possibly, functional changes in the developing pulmonary vascular bed. (medscape.com)
  • Ultrasound allows the identification of impalpable veins , its patency tested and its puncture performed under direct vision, which improves the success rates of PVA and decrease the complications 3,4,6-8 . (bvsalud.org)
  • Therefore, a rapid response is needed in the operating theater where revascularization should restore the vascular function ( Lawton and Lang, 2019 ). (frontiersin.org)
  • Extracellular Vesicles Enhance the Remodeling of Cell-Free Silk Vascular Scaffolds in Rat Aortae. (pitt.edu)
  • Associated with increased incidence of aneurysms and vascular malformations. (radiologykey.com)