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Vascular stent graft

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https://www.readbyqxmd.com/read/28341510/endovascular-stenting-of-portal-vein-for-graft-rescue-after-a-pancreas-transplant-venous-graft-thrombosis-a-case-report
#1
Ossama M Reslan, Jordan M Kirsch, Hitesh Kaul, Stalin Campos, Radi Zaki, Paul S Brady, Kamran Khanmoradi
Venous thrombosis of pancreas transplant allografts often leads to graft loss. Its worrisome complication and difficult to treat, forming the most common nonimmunological cause of graft loss. Multiple risk factors have been implicated in the development of venous thrombosis of pancreas transplant. Color Doppler ultrasonography (CDUS) enables early diagnosis of venous thrombosis, thus increasing the possibility of graft-rescue treatments. Endovascular management of pancreatic transplant vascular complications are scant and in the form of case reports...
March 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28331143/chopstick-injury-successful-stent-graft-therapy-for-traumatic-left-subclavian-artery-aneurysm
#2
Tatsuo Ueda, Hiroyuki Tajima, Satoru Murata, Ryo Takagi, Hiroyuki Yokota, Shin-Ichiro Kumita
Traumatic chopstick injury is very rare, especially in the vascular system. We present an unusual case of a 19-year-old man who presented at the emergency department after being stabbed with a chopstick by his elder brother. Computed tomography revealed a left subclavian artery pseudoaneurysm, which increased from 4 mm to 7 mm in diameter within 47 days. We successfully deployed a Niti-S stent graft for the increasing aneurysm, thereby avoiding a surgical operation. Balloon angioplasty was added for re-stenosis 8 months after the first intervention...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28325051/bioavailability-of-immobilized-epidermal-growth-factor-covalent-versus-noncovalent-grafting
#3
Nesrine Riahi, Frederic Murschel, Sophie Lerouge, Yves Durocher, Olivier Henry, Gregory De Crescenzo
In an effort to rationalize and optimize an antiapoptotic coating combining chondroitin sulfate (CS) and epidermal growth factor (EGF) for vascular applications, the authors here report the comparison of two grafting strategies aiming to display EGF in an oriented fashion on CS. For that purpose, the authors produced, purified, and characterized a chimeric protein corresponding to EGF that was N-terminally fused to a cysteine and a coil peptide. The chimera was covalently immobilized via its free thiol group or captured via coiled-coil interactions at the surface of a biosensor or on a chondroitin sulfate coating in multiwell plates, mimicking the coating that was previously developed by them for stent-graft surfaces...
March 21, 2017: Biointerphases
https://www.readbyqxmd.com/read/28297068/drug-eluting-balloons-for-resistant-arteriovenous-dialysis-access-stenosis
#4
Dimitrios Karnabatidis, Panagiotis Kitrou
Vascular access maintenance is vital for hemodialysis patients. Conventional balloon angioplasty is the gold standard of treatment in endovascular therapy according to published guidelines, accompanied by bare metal stents as a bail-out method. Several devices have been used so far with a view to improve patency outcomes, but only covered stents have been proposed as a valid alternative and only for venous juxta-anastomotic stenosis of arteriovenous grafts. Paclitaxel-coated balloons (PCBs) have been extensively investigated in the last few years in pilot studies with small numbers of patients in dialysis access...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297064/endovascular-treatment-of-swing-segment-stenosis-in-vascular-access-current-status-and-future-directions
#5
Rick de Graaf
Swing-segment lesions are a fairly common reason for access failure and predispose to repeated interventions. The pathophysiology, hemodynamic circumstances and the primary intervention might all play a role in early recurrence. Mainly, percutaneous transluminal angioplasty (PTA), bare metal stenting and stent graft implantation have been performed to prolong lesion patency and access circuit patency. The available data on endovascular treatment of swing-segment lesions are scarce, heterogeneous and of poor quality...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297062/description-and-early-outcomes-of-the-hybrid-graft-for-dialysis
#6
Luis F Gomez, Eric K Peden
INTRODUCTION: Long-term dialysis access has become more challenging as patient survival has improved in end-stage renal disease. The GORE® Hybrid Vascular Graft (GHVG) has been designed to improve dialysis access outcomes and provide additional access options for challenging patients. In this article, we will review the design of the graft, unique properties and reported outcomes. METHODS: We reviewed data available at our institution and performed a Pubmed search on GORE® Hybrid Vascular graft...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297058/stent-grafts-for-treatment-of-cannulation-zone-stenosis-and-arteriovenous-graft-venous-anastomosis
#7
David Shemesh, Ilya Goldin, Oded Olsha
Stent grafts (SGs) are widely used for treatment of failing vascular accesses, fistulas and grafts. The mechanical barrier of the covered stent prevents in-stent stenosis and can be used to effectively correct ruptured vein and aneurysms. Treatment of cannulation zone stenosis with SG can be justified when its use is obligatory, in order to prevent total access loss. Although there are worrying complications attendant on SG insertion and cannulation, including jeopardizing future access creation, most studies report no complications of SG in cannulation zone stenosis...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28294661/-nellix-new-possibilities-in-the-treatment-of-the-aorto-iliac-aneurysm-our-initial-experiences
#8
László Hidi, Csaba Csobay-Novák, Attila Nemes, Balázs Nemes, Zoltán Oláh, Dániel Pál, Péter Sótonyi
INTRODUCTION: The Endologix developed an aortoiliac stent graft system that is different than the conventional implantation technique (Nellix, EVAS-endovascular aneurysm sealing system). The first implantation in Hungary has been performed in the beginning of 2016 at Heart and Vascular Center. METHODS: Nellix: two endobags surrounding ballon-expandable covered stent (10 mm) with optional length, biocompatible polymer which is able to be injected into the endobags and a procedure-coordinating console...
March 2017: Magyar Sebészet
https://www.readbyqxmd.com/read/28291676/long-term-outcome-after-thrombolysis-for-acute-lower-limb-ischaemia
#9
O Grip, A Wanhainen, S Acosta, M Björck
OBJECTIVES: The purpose was to study long-term outcome after thrombolysis for acute arterial lower limb ischaemia, and to evaluate the results depending on the underlying aetiology of arterial occlusion. METHODS: This was a retrospective study of patients entered into a prospective database. Patients were identified in prospective databases from two vascular centres, including a large number of variables. Case records were analysed retrospectively. Through cross linkage with the Population Registry 100% accurate survival data were obtained...
March 10, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28286359/magnetizable-stent-grafts-enable-endothelial-cell-capture
#10
Brandon J Tefft, Susheil Uthamaraj, J Jonathan Harburn, Ota Hlinomaz, Amir Lerman, Dan Dragomir-Daescu, Gurpreet S Sandhu
Emerging nanotechnologies have enabled the use of magnetic forces to guide the movement of magnetically-labeled cells, drugs, and other therapeutic agents. Endothelial cells labeled with superparamagnetic iron oxide nanoparticles (SPION) have previously been captured on the surface of magnetizable 2205 duplex stainless steel stents in a porcine coronary implantation model. Recently, we have coated these stents with electrospun polyurethane nanofibers to fabricate prototype stent-grafts. Facilitated endothelialization may help improve the healing of arteries treated with stent-grafts, reduce the risk of thrombosis and restenosis, and enable small-caliber applications...
April 1, 2017: Journal of Magnetism and Magnetic Materials
https://www.readbyqxmd.com/read/28279653/comparison-of-renal-complications-between-endografts-with-suprarenal-and-infrarenal-fixation
#11
S L Zettervall, P A Soden, S E Deery, K Ultee, K E Shean, F Shuja, R L Amdur, M L Schermerhorn
OBJECTIVES: Surgeons have multiple grafts options available for the endovascular treatment of abdominal aortic aneurysm (EVAR), and some hypothesize that suprarenal fixation endografts may result in higher rates of renal complications than infrarenal endografts. This study aimed to compare the outcomes of contemporary suprarenal and infrarenal endografts. METHODS: The Targeted Vascular Module of the National Surgical Quality Improvement Project was utilised to identify patients undergoing EVAR for infrarenal aneurysm from 2011 to 2013...
March 6, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28279526/applicability-and-midterm-results-of-branch-cuff-closure-with-vascular-plug-in-branched-endovascular-repair-for-thoracoabdominal-aortic-aneurysms
#12
Kiattisak Hongku, Timothy Resch, Björn Sonesson, Thorarinn Kristmundsson, Nuno V Dias
OBJECTIVE: This study assessed the applicability and outcomes of the closure of unused cuffs in branched endovascular aneurysm repair (b-EVAR) of thoracoabdominal aortic aneurysm. METHODS: We reviewed b-EVAR procedures at a tertiary referral center to identify patients who underwent incomplete branching and needed closure of the unused branch cuffs. An electronic database and intraoperative and follow-up imaging studies were reviewed to assess technical applicability and outcomes...
March 6, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28268109/the-incidence-and-fate-of-endoleaks-vary-between-ruptured-and-elective-endovascular-abdominal-aortic-aneurysm-repair
#13
Adam A Quinn, Manish Mehta, Mehdi J Teymouri, Megan E Keenan, Philip S K Paty, Yi Zhou, Benjamin B Chang, Paul Feustel
BACKGROUND: The number of ruptured abdominal aortic aneurysm (r-AAA) patients who are treated by endovascular means is increasing as ruptured endovascular aneurysm repair (r-EVAR) enters the mainstream. However, even today, data on the incidence and behavior of endoleaks after r-EVAR are scarce. This study analyzed whether endoleaks behave differently after EVAR for rupture vs elective AAA repair. METHODS: From 2002 to 2013, there were 2052 patients who underwent EVAR for treatment of rupture (n = 166 [8...
March 4, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28266293/emergency-pancreatico-duodenectomy-with-superior-mesenteric-and-portal-vein-resection-and-reconstruction-using-a-gore-tex-vascular-graft
#14
Mihai Adrian Eftimie, Vasile Lungu, Marian Tudoroiu, Genady Vatachki, Severina Batca, Leonard David
Emergency pancreatico-duodenectomy(EPD) is a very rare procedure and few reports are present in medical literature. It is an uncommon approach, usually used for emergency surgical treatment of abdominal trauma that involves the head of the pancreas or the duodenum, but it is also a surgical tool for the treatment of ruptured aneurysms, bleeding pseudocysts, duodenal perforations, uncontrollable hemorrhage from ulcers and tumors, severe infectious complications of acute pancreatitis or endoscopic retrograde cholangiopancreatography related complications (1,2)...
January 2017: Chirurgia
https://www.readbyqxmd.com/read/28255132/extra-anatomical-veno-venous-surgical-bypass-for-central-vein-occlusion-in-patients-with-ipsilateral-arterio-venous-fistula-avf-for-haemodialysis-a-single-centre-experience
#15
K S Saravana, A A Zainal
OBJECTIVE: Central vein occlusion is a common complication related to central vein catheter insertion for haemodialysis which can be unmasked by an ipsilateral fistula creation, leading to a dysfunctional arteriovenous fistula (AVF). We describe an extra-anatomical venous bypass surgical procedure performed to maintain vascular access and reduce the symptoms of swelling of the ipsilateral upper limb, neck and face. MATERIALS AND METHODS: We report 20 consecutive patients with end-stage renal failure (ESRF) who had central vein occlusion and were not amenable to endovascular intervention...
February 2017: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28242409/stent-migration-during-endovascular-treatment-of-traumatic-arterio-venous-fistula-following-lumbar-spine-surgery
#16
Kiron Varghese, Srilakshmi M Adhyapak
We report the endovascular treatment of an arterio-venous fistula involving the right common iliac artery and left common iliac veinin a 48 year old male patient who had previously undergone lumbar spine disc surgery. A balloon expandable covered stent was deployed in the common iliac artery which got partially dislodged into the aorta during attempted post dilatation of the stent. The proximal end of the stent was secured in place with an inflated balloon in the aorta, introduced from the contralateral iliac artery, allowing successfulretrieval and dilatation of the stent graft through the ipsilateral femoral vascular access...
February 24, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28212797/ca-2-calmodulin-dependent-protein-kinase-ii-in-vascular-smooth-muscle
#17
F Z Saddouk, R Ginnan, H A Singer
Ca(2+)-dependent signaling pathways are central regulators of differentiated vascular smooth muscle (VSM) contractile function. In addition, Ca(2+) signals regulate VSM gene transcription, proliferation, and migration of dedifferentiated or "synthetic" phenotype VSM cells. Synthetic phenotype VSM growth and hyperplasia are hallmarks of pervasive vascular diseases including hypertension, atherosclerosis, postangioplasty/in-stent restenosis, and vein graft failure. The serine/threonine protein kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a ubiquitous mediator of intracellular Ca(2+) signals...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28191625/iatrogenic-vascular-injuries-due-to-spinal-surgeries-endovascular-perspective
#18
Mustafa Gok, Elcin Aydin, Serkan Guneyli, Ali Akay, Celal Cinar, Ismail Oran
AIM: Iatrogenic vascular injuries due to spinal surgeries are rare but serious complications. Surgical management of these injuries is challenging with high morbidity rates. In this study we aim to present the results of endovascular management of iatrogenic vascular injuries due to spinal surgeries. MATERIAL AND METHODS: We retrospectively reviewed 11 patients (5 male, 6 female) who had vascular injuries due to cervical and lumbar spinal surgeries. Clinical findings were bleeding (n=5), leg edema (n=6) and right heart failure with severe dyspnea (n=1)...
January 17, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28155691/influence-of-endoleak-positions-on-the-pressure-shielding-ability-of-stent-graft-after-endovascular-aneurysm-repair-evar-of-abdominal-aortic-aneurysm-aaa
#19
Jie Li, Xiaopeng Tian, Zhenze Wang, Jiang Xiong, Yubo Fan, Xiaoyan Deng, Anqiang Sun, Xiao Liu
BACKGROUND: Abdominal aortic aneurysm (AAA) is a kind of dangerous aortic vascular disease, which is characterized by abdominal aorta partial enlargement. At present, endovascular aneurysm repair (EVAR) is one of the main treatments of abdominal aortic aneurysm. However for some patients after EVAR the aneurysm re-expanded and even ruptured, leading to poor postoperative effect. The stent-graft endoleak after EVAR was realized to influence the AAA in-sac pressure and contribute to the aneurysm re-enlargement...
December 28, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28139455/vascular-anatomy-in-children-with-univentricular-hearts-regarding-transcatheter-bidirectional-glenn-anastomosis
#20
Aleksander Sizarov, Francesca Raimondi, Damien Bonnet, Younes Boudjemline
BACKGROUND: Transcatheter stent-secured Glenn anastomosis, aiming to reduce the invasiveness of palliation in patients with univentricular heart defects, has been reported in large experimental animals. The advent of biodegradable stents and tissue-engineered vascular grafts will make this procedure a reality in human patients. However, the relationship between the superior vena cava (SVC) and the right pulmonary artery (RPA) is different in humans. AIM: To characterise vascular anatomy in children with univentricular hearts, regarding technical aspects and device design for this procedure...
January 27, 2017: Archives of Cardiovascular Diseases
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