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Vascular stent graft

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https://www.readbyqxmd.com/read/28212797/ca-2-calmodulin-dependent-protein-kinase-ii-in-vascular-smooth-muscle
#1
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
#2
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
#3
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
#4
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
https://www.readbyqxmd.com/read/28068871/predilation-technique-with-balloon-angioplasty-to-facilitate-percutaneous-groin-access-of-large-size-sheath-through-scar-tissue
#5
Felice Pecoraro, Mayur Krishnaswamy, Johnny Steuer, Gilbert Puippe, Nicola Mangialardi, Thomas Pfammatter, Zoran Rancic, Frank J Veith, Neal S Cayne, Mario Lachat
Purpose Percutaneous remote access for endovascular aortic repair is an advantageous alternative to open access. Previous surgery in the femoral region and the presence of synthetic vascular grafts in the femoral/iliac arteries represent major limitations to percutaneous remote access. The aim of this study was to evaluate an original technique used for enabling percutaneous remote access for thoracic or abdominal endovascular aortic repair in patients with scar tissue and/or a vascular graft in the groin. Methods Twenty-five consecutive patients with a thoracic (11/25; 44%) or an aortic aneurysm (14/25; 66%) and with a synthetic vascular graft in the groin (16/25; 64%) or a redo groin access (9/25; 36%) were managed through the percutaneous remote access...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28056759/should-we-be-concerned-about-the-inflammatory-response-to-endovascular-procedures
#6
Djordje Radak, Nenad Djukic, Slobodan Tanaskovic, Milan Obradovic, Desanka Cenic-Milosevic, Esma R Isenovic
Endovascular surgery represents a minimally invasive procedure for the treatment of occlusive and aneurysmal arterial disease. However, it is followed by inflammatory response, with a rise in specific inflammatory biomarkers, such as C-reactive protein, serum amyloid A and fibrinogen. Shear stress during balloon inflation and vascular injury represents triggering events for the inflammatory process, stimulating the production of proinflammatory molecules and activation of circulating monocytes. The current literature indicates that stent implantation induces more prominent inflammatory reaction...
January 5, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28039051/pediatric-robot-assisted-redo-pyeloplasty-with-buccal-mucosa-graft-a-novel-technique
#7
Jennifer J Ahn, Michael E Shapiro, Jonathan S Ellison, Thomas S Lendvay
OBJECTIVE: To report a novel approach of pediatric robot-assisted redo pyeloplasty with buccal mucosa graft (BMG). METHODS: An IRB-approved retrospective review of all patients undergoing robot-assisted redo pyeloplasty with BMG at our institution was performed. OPERATIVE DETAILS: For all patients, the following ports were used: one 8.5mm camera, two 8mm robotic, and one 5mm assistant. Initial dissection was performed laparoscopically and robotically, and the ureter was incised longitudinally along the anterior surface...
December 27, 2016: Urology
https://www.readbyqxmd.com/read/28034631/emergency-endovascular-management-of-acute-thoracic-aortic-pathology-a-safe-and-feasible-option
#8
Z Ahmed, S M McHugh, A Elmallah, M P Colgan, A O'Callaghan, S M O'Neill, P Madhavan, Z Martin
Endovascular repair has revolutionised the emergency treatment of thoracic aortic disease. We report our 10 year experience using this treatment in emergency cases. A prospectively maintained vascular database was analysed. Patients' medical records and CT images stored on the hospital PACS system were also reviewed. Statistical analysis was done using IBM SPSS V21. There were a total of 59 thoracic aortic stenting procedures of which 33 (60% males with a mean age of 58 yrs) were performed for emergency thoracic pathologies: traumatic transection (n = 10), ruptured aneurysm (n = 6), non-traumatic dissection (n = 8) and penetrating aortic ulcer (n = 9)...
December 27, 2016: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/28025048/tropoelastin-inhibits-intimal-hyperplasia-of-mouse-bioresorbable-arterial-vascular-grafts
#9
Tadahisa Sugiura, Riddhima Agarwal, Shuhei Tara, Tai Yi, Yong-Ung Lee, Christopher K Breuer, Anthony S Weiss, Toshiharu Shinoka
: Neointimal hyperplasia, which results from the activation, proliferation and migration of vascular smooth muscle cells (SMCs), is a detrimental condition for vascular stents or vascular grafts that leads to stenosis. Preventing neointimal hyperplasia of vascular grafts is critically important for the success of arterial vascular grafts. We hypothesized that tropoelastin seeding onto the luminal surface of the graft would prevent neointimal hyperplasia through suppressing neointimal smooth muscle cell proliferation...
December 23, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/28018510/spontaneous-evacuation-of-a-vascular-metallic-stent-through-a-graft-duodenal-fistula-with-concomitant-non-surgical-fistula-closure
#10
Shunya Shindo, Hidenori Inoue, Shinya Motohashi, Hirotomo Uchiyama, Junetsu Akasaka
We report a patient who developed ileus caused by vascular stent migration into the duodenum with periprosthetic retroperitoneal abscess. The patient previously underwent removal of an infected abdominal aortic aneurysm with concomitant axillobifemoral arterial reconstruction. An occlusion of the graft leg was treated by a unilateral aortoiliac bypass where endovascular surgery with a metallic stent was later needed. The abscess and ileus were vigorously drained. Following the spontaneous evacuation of the metallic stent via the digestive tract, the abscess was completely drained and fistula closure was achieved without surgical intervention...
2016: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/28017584/feasibility-of-three-dimensional-magnetic-resonance-angiography-fluoroscopy-image-fusion-technique-in-guiding-complex-endovascular-aortic-procedures-in-patients-with-renal-insufficiency
#11
Adeline Schwein, Ponraj Chinnadurai, Dipan J Shah, Alan B Lumsden, Carlos F Bechara, Jean Bismuth
OBJECTIVE: Three-dimensional image fusion of preoperative computed tomography (CT) angiography with fluoroscopy using intraoperative noncontrast cone-beam CT (CBCT) has been shown to improve endovascular procedures by reducing procedure length, radiation dose, and contrast media volume. However, patients with a contraindication to CT angiography (renal insufficiency, iodinated contrast allergy) may not benefit from this image fusion technique. The primary objective of this study was to evaluate the feasibility of magnetic resonance angiography (MRA) and fluoroscopy image fusion using noncontrast CBCT as a guidance tool during complex endovascular aortic procedures, especially in patients with renal insufficiency...
December 23, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28004900/current-management-of-inguinal-false-aneurysms
#12
Kim Houlind, Jørn M Jepsen, Cristian Saicu, Sten Vammen, Johnny K Christensen, Hans Ravn
False aneurysms are formed as a result of bleeding causing a hematoma to compress the surrounding tissue. The majority of false aneurysms presenting to the vascular surgeon are caused by iatrogenic injury to an artery. Although anastomotic failure occurs, a much higher number is caused by bleeding from puncture sites after percutaeous intervention. Anticoagulative medication, low patelet counts and severely calcified vessels increase the risk of forming a false aneurysm. Experienced specialists may make the diagnosis from physical examination, but ultrasound imaging is almost always needed in order to decide for a treatment strategy...
December 22, 2016: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/27999650/subclavian-artery-esophageal-fistula-after-placement-of-a-self-expanding-metal-stent-in-a-patient-with-esophagogastric-anastomosis-stenosis
#13
Mohammadreza Seyedmajidi, Maryam Tavassoli, Mojtaba Kianti, Jamshid Vafaeimanesh
BACKGROUND: There have been reports on stent-related vascular erosions about patients with benign or malignant stenosis of the esophagus who received endoscopic stent insertion for palliative intention for oral intake. CASE PRESENTATION: A 61-year-old woman with esophageal cancer located in the middle part of esophagus was treated with esophagectomy. Two years following the surgery, malignant stenosis recurred in the esophagogastric anastomosis. A non-covered self-expanding metal stent (10 cm length with a diameter of 18 mm at expanded state) was inserted...
2016: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/27994009/stent-graft-repair-of-anastomotic-pseudoaneurysm-of-femoral-popliteal-bypass-graft-following-patch-angioplasty
#14
Andrea Carollo, Giovanni Gagliardo, Peter M DeVito, Michael Cicchillo
Pseudoaneurysm (PA) following vascular reconstruction is a complication of bypass surgery. Historically, the mainstay of treatment was an open repair; the surgical management consisted of resection of the initial graft with reimplantation of a new bypass either into the original arteriotomy or to a more distal target. Placement of a stent graft to exclude the PA is a viable option. We present a case of an 85-year-old man with prior history of polytetrafluoroethylene femoral-popliteal bypass now with an 8 × 5...
December 18, 2016: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/27989051/pga-polyglycolic-acid-p4hb-poly-4-hydroxybutyrate-based-bioengineered-valves-in-the-rat-aortic-circulation
#15
Agnieszka A Książek, Katharyn J Mitchell, Nikola Cesarovic, Colin C Schwarzwald, Simon P Hoerstrup, Benedikt Weber
BACKGROUND: Bioengineered living autologous valves with remodeling and growth capacity represent a promising concept for future cardiac and venous valve repair. A meticulous understanding of the mechanisms involved in recellularization and remodeling is essential for the safe and efficient clinical translation of this technology. In this context, the first investigations of bioengineered vascular grafts in immune-incompetent or transgenic rodents represented an important step. However, the in-vivo assessment of bioengineered synthetic scaffold-based (biodegradable) valve replacements in rodent models has not been achieved to date...
May 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27972278/economic-analyses-of-flair%C3%A2-and-fluency%C3%A2-plus-endovascular-stent-grafts-for-the-treatment-of-vascular-access-stenosis-a-u-s-hospital-and-payer-perspective
#16
B Barclay, A Hogan, S Hollmann, N Ferko, P Delatore
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/27932116/surgical-complications-in-en-bloc-renal-transplantation
#17
M A Moreno de la Higuera Díaz, N Calvo Romero, I Pérez-Flores, M Calvo Arévalo, B Rodríguez Cubillo, A Shabaka, V López de la Manzanara, Á Gómez Vegas, J Blázquez Izquierdo, A I Sánchez-Fructuoso
En bloc pediatric transplantation (EBPT) began with the aim of increasing the donor pool due to the existing high demand for donors. At its inception, it was considered a type of suboptimal transplantation due to its association with a high incidence of vascular, urologic, and immunologic complications. The main objective of this study was to update information on EBPT with the largest case series that exists on a worldwide scale. In a retrospective study, the results obtained from brain-dead donors (BDDs; n = 770) were compared to those of EBPT (n = 100) from January 1990 to December 2012...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27925869/endovascular-management-of-infected-iliofemoral-pseudoaneurysms-a-systematic-review
#18
Konstantinos G Moulakakis, Vangelis G Alexiou, George S Sfyroeras, John Kakisis, Andreas Lazaris, Spyridon N Vasdekis, Elias N Brountzos, George Geroulakos
We conducted a systematic review regarding the efficacy and outcome of endovascular treatment of infected iliofemoral arterial pseudoaneurysms with covered stents. 35 cases were identified, including 5 own. 22 pseudoaneurysms were located in the femoral area and 13 in the iliac vessels. The most commonly reported complaints were pulsatile groin mass (40 %), sepsis (37.1 %), active bleeding (31.4 %), and groin infection with purulent discharge (17.1 %). S. aureus (65.7 %) and Streptococcus species (22.9 %) were the most common microbes isolated...
December 7, 2016: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/27908821/carotid-bypass-using-gore-hybrid-vascular-graft-for-in-stent-restenosis-after-carotid-stenting
#19
Andrea Agostinucci, Andrea Cumino, Roberta Suita, Andrea Bellan, Davide Lazzaro, Elisa Pagliasso, Ferruccio Ferrero
In-stent restenosis (ISR) is the most common long-term complication following carotid artery stenting (CAS), affecting 3.5% to 21% of patients after a mean follow-up of 18 months in published reports. Until now, the optimal management for ISR after CAS is still not clear, and different endovascular treatments along with various surgical options have been proposed. Moreover, surgical treatment for ISR in a previously operated patient of ipsilateral endarterectomy is a technically demanding procedure. In this report, we describe a case of severe carotid recurrent ISR, which occurred after CAS for postendarterectomy restenosis, that was successfully treated, in a straightforward way, with a carotid bypass using a Gore(®) Hybrid Vascular Graft...
November 28, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27903481/hybrid-repair-of-complex-left-subclavian-artery-injury-with-partial-transection-and-complete-thrombosis-in-an-unstable-patient-following-blunt-trauma
#20
Ilitch Diaz-Gutierrez, Muhammad A Rana, Barkat Ali, John M Marek, Mark Langsfeld
Blunt subclavian artery injuries are rare and are associated with high morbidity and mortality. Several case reports have suggested that endovascular repair is safe with short operative times and minimal blood loss. We report a case of a 20-year-old male patient involved in a high speed motor vehicle collision that resulted in partial transection of left subclavian artery with complete luminal thrombosis. Patient also had a left main-stem bronchus avulsion along with major intra-abdominal injuries and multiple spine and long bone fractures...
November 26, 2016: Annals of Vascular Surgery
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