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Vein Stent

Cong-Hui Li, Bu-Lang Gao, Ji-Wei Wang, Jian-Feng Liu, Hui Li, Song-Tao Yang
PURPOSE: To investigate construction of an aneurysm on a curved vascular segment of a carotid siphon model for testing endovascular devices. MATERIALS AND METHODS: Pre-shaped carotid siphon models of polytetrafluoroethylene were constructed from a human cadaver for confining canine common carotid artery (CCA). The canine right external jugular vein was isolated and harvested to make a venous pouch by suturing one end. The right CCA was isolated and the venous pouch was sutured onto the right CCA to make an aneurysm...
December 6, 2018: World Neurosurgery
Michael Lichtenberg, Rick de Graaf, Wilhelm F Stahlhoff, Ahmet Özkapi, Maria Simon, Frank Breuckmann
BACKGROUND: We sought to determine the patency and clinical symptom relief following the usage of the sinus-Obliquus venous stent in the endovascular treatment of venous obstruction of the ilio-femoral track in short-term. PATIENTS AND METHODS: 48 patients (62 % female, mean age 57 years) with chronic unilateral post-thrombotic obstruction (PTO) and non-thrombotic iliac vein obstructive lesions (NIVL) without involvement of inferior vena cava receiving a sinus-Obliquus venous stent was included in the analysis...
December 10, 2018: VASA. Zeitschrift Für Gefässkrankheiten
Kyeong Sik Kim, Ji Soo Lee, Gyu Sung Choi, Choon Hyuck David Kwon, Jae-Won Cho, Suk-Koo Lee, Kwang Bo Park, Sung Ki Cho, Sung Wook Shin, Jong Man Kim
Purpose: The purpose of this study was to describe the long-term effects of stenting in patients with hepatic venous outflow obstruction (HVOO), who underwent living donor liver transplantation (LDLT). Methods: Between January 2000 and December 2009, 622 adult patients underwent LDLT at our hospital, and of these patients, 21 (3.3%) were diagnosed with HVOO; among these patients, 17 underwent stenting. The patients were divided into early or late groups according to the time of their HVOO diagnoses (cutoff: 60 days after liver transplantation)...
December 2018: Annals of Surgical Treatment and Research
Ninos Samano, Michael Dashwood, Domingos Souza
Ischemic heart disease is currently the leading cause of death globally, with coronary artery bypass grafting among the most common operations performed worldwide. More extensive use of arterial grafts has been advocated because of their high long-term patency, long-term survival benefit, and freedom from reinterventions. Despite this, the saphenous vein is the most frequently used conduit in patients undergoing coronary artery bypass surgery since its introduction over 50 years ago. Consequently, the saphenous vein remains an indispensable conduit in coronary artery bypass grafting and maintaining its long-term patency is one of the most crucial challenges in cardiovascular surgery...
September 2018: Annals of Cardiothoracic Surgery
Wai Kin Chi, G M Tam, Bryan P Yan
This case demonstrates that the high radial strength of a dedicated nitinol venous stent is able to achieve good acute angiographic results and clinical efficacy.
December 2018: Journal of Invasive Cardiology
Sukhdeep Bhogal, Hemang B Panchal, Jayant Bagai, Subhash Banerjee, Emmanouil S Brilakis, Debabrata Mukherjee, Gautam Kumar, Madhan Shanmugasundaram, Timir K Paul
BACKGROUND: Drug eluting stents (DES) are preferred over bare metal stents (BMS) for native coronary artery revascularization unless contraindicated. However, the preferred stent choice for saphenous venous graft (SVG) percutaneous coronary interventions (PCI) is unclear due to conflicting results. METHODS: PubMed, Clinical trials registry and the Cochrane Center Register of Controlled Trials were searched through June 2018. Seven studies (n = 1639) comparing DES versus BMS in SVG-PCI were included...
November 22, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
A Marot, J V Barbosa, R Duran, P Deltenre, A Denys
PURPOSE: The purpose of this study was to evaluate the feasibility, safety, and efficacy of portal vein recanalization (PVR) and propose a new classification for better selecting candidates with portal vein occlusion (PVO) in whom PVR could be feasible. MATERIALS AND METHODS: The charts of 15 non-cirrhotic patients in whom stent placement using a trans-hepatic approach was attempted for the treatment of PVO with cavernous transformation were reviewed. There were 12 men and 5 women with a mean age of 47±12 years (range: 22-60 years)...
November 28, 2018: Diagnostic and Interventional Imaging
N Konstantinou, T Kölbel, F Rohlffs, F Heidemann, E S Debus, N Tsilimparis
Ilioiliac fistulae are a rare condition whose diagnosis and treatment can be challenging. We describe the case of a 74-year old patient with a high-flow fistula between the left common iliac artery and the ipsilateral common iliac vein presenting with heart failure. The fistula was probably iatrogenic, caused by prostatic surgery one year earlier. We describe imaging-findings on CT angiography as well as the treatment by two back-table reversed stent-grafts. The satisfactory result demonstrated in our case as well as in the literature suggest that an endovascular treatment for this rare condition should be considered as first-line therapy...
November 27, 2018: Annals of Vascular Surgery
Rym El Khoury, Nicholas M Kunda, Mark L Keldahl
In this case, a 22-year-old man sustained multiple gunshot wounds to the abdomen, which required in extremis surgical exploration with damage control laparotomy and hemostatic resuscitation in the surgical intensive care unit. Diagnostic angiography was negative and an inferior vena cava (IVC) injury was suspected. He was returned to the operating room, where the infrarenal IVC was accessed by direct puncture and venography demonstrated active extravasation of the suprarenal vena cava. The injury was successfully sealed with two overlapping endovascular aortic grafts, with care taken to preserve flow from the renal and hepatic veins...
November 26, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Shota Yasuda, Motohiko Goda, Taisuke Shibuya, Keiji Uchida, Shinichi Suzuki, Noishiki Yasuharu, Utako Yokoyama, Yoshihiro Ishikawa, Munetaka Masuda
BACKGROUND: Although the efficacy of external stents for vein grafts in coronary artery bypass grafting has been recognized, the ideal diameter and material of the stent remain controversial. We created a new external stent made of soft polyester mesh and performed an animal experiment using canines. MATERIALS AND METHODS: Bilateral saphenous vein grafts were interposed in the bilateral common carotid artery of 10 beagles. The grafts in the left carotid artery were designated as the control group, and those in the right rolled by a soft polyester mesh external stent were designated as mesh group...
November 29, 2018: Artificial Organs
Anastasia Plotkin, Matthew G Bartley, Kathryn E Bowser, Jeniann A Yi, Omid Jazaeri, Gregory A Magee
INTRODUCTION: Iliofemoral vein thrombosis can lead to debilitating edema and venous claudication that significantly worsens quality of life, especially in young active individuals. Venous reconstruction becomes increasingly complex and has worsening patency with subsequent revisions so preoperative planning is critical to success. METHODS: We report a case of a 54 year-old man in active military service with profoundly symptomatic leg swelling after failure of three previous common femoral vein (CFV) reconstructions...
November 23, 2018: Annals of Vascular Surgery
Wei Wei, Xuemei Jiang, Bo Xu, Yikuan Chen
Stents have been widely used to restore the patency of the iliac vein in the treatment of its obstruction. However, various complications related to those stents have been reported. This case report covers a 67-year-old male who was diagnosed with left iliofemoral venous post-thrombotic syndrome with recurrent acute deep venous thrombosis. Thrombosis of the inferior vena cava was induced by pronounced extension of left iliac vein stents. Extending stents in this way covers the outlet of the contralateral common iliac vein and may induce thrombosis in the inferior vena cava...
January 2018: Thoracic and Cardiovascular Surgeon Reports
Takuya Ogami, Eric Zimmermann, Roger Zhu, Berhane Worku, Dimitrios V Avgerinos
No abstract text is available yet for this article.
November 22, 2018: Journal of Cardiac Surgery
Joseph L McDevitt, Ravi N Srinivasa, Joseph J Gemmete, Anthony N Hage, Rajiv N Srinivasa, Jacob J Bundy, Jeffrey Forris Beecham Chick
PURPOSE: To report the technical success and complications following sharp recanalization of chronic venous occlusions. MATERIALS AND METHODS: A total of 123 patients, including 75 (61.0%) men and 48 (39.0%) women, with mean age of 50.5 ± 17.5 years (range 19-90 years), underwent sharp recanalization of chronic venous occlusions. The etiologies of occlusion were chronic deep venous thrombosis (n = 43; 35.0%), prior central venous access (n = 39; 31...
November 20, 2018: Cardiovascular and Interventional Radiology
David P Taggart, Carolyn M Webb, Anthony Desouza, Rashmi Yadav, Keith M Channon, Fabio De Robertis, Carlo Di Mario
BACKGROUND: Externally stenting saphenous vein grafts reduces intimal hyperplasia, improves lumen uniformity and reduces oscillatory shear stress 1 year following surgery. The present study is the first to present the longer-term (4.5 years) performance and biomechanical effects of externally stented saphenous vein grafts. METHODS: Thirty patients previously implanted with the VEST external stent in the randomized, within-patient-controlled VEST I study were followed up for adverse events; 21 of these were available to undergo coronary angiography and intravascular ultrasound...
November 19, 2018: Journal of Cardiothoracic Surgery
Viviane G Nasr, Ryan Callahan, Zachary Wichner, Kirsten C Odegard, James A DiNardo
Pulmonary vein stenosis (PVS) is a rare disorder that leads to progressive narrowing of the extrapulmonary veins. PVS has been reported in both children and adults and in its worse iteration leads to pulmonary hypertension, right ventricular failure, and death. Multiple etiologies of PVS have been described in children and adults. This review will focus on intraluminal PVS in children. Intraluminal PVS has an estimated incidence ranging from 0.0017% to 0.03%. It is associated with conditions such as prematurity, bronchopulmonary dysplasia, necrotizing enterocolitis, Smith-Lemli-Opitz syndrome, and Down syndrome...
November 16, 2018: Anesthesia and Analgesia
Michael K W Lichtenberg, Rick de Graaf, Wilhelm F Stahlhoff, Ahmet Özkapi, Tienush Rassaf, Frank Breuckmann
BACKGROUND: We sought to determine the patency and clinical symptom relief of the Venovo venous stent in the endovascular treatment of non-thrombotic (NIVL) or post-thrombotic venous obstruction (PTO) of the iliofemoral track over a period of 6 months. PATIENTS AND METHODS: A total of 80 patients (45 female, mean age 57 years) treated in 2016 and 2017 were included in the Arnsberg venous registry. Clinical improvement was determined by the revised venous clinical severity score (rVCSS) as well as the clinical, etiologic, anatomic and pathophysiologic (CEAP) score...
November 19, 2018: VASA. Zeitschrift Für Gefässkrankheiten
Mathew Wooster, Blake Fernandez, Kelli L Summers, Karl A Illig
BACKGROUND: Subclavian vein stenosis or occlusion at the thoracic outlet is a problem associated with certain anatomic and environmental stresses (venous thoracic outlet syndrome [VTOS]), the presence of central venous catheters, and the high flows associated with arteriovenous (AV) access in the limb. We describe our experience with open and endovascular techniques for restoring patency in highly symptomatic patients. METHODS: A prospectively collected database of patients was queried for patients treated for central venous obstructive disease in the setting of highly symptomatic VTOS and ipsilateral AV access from October 2011 to August 2016...
November 12, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Arjun Jayaraj, William Crim, Alexander Knight, Seshadri Raju
OBJECTIVE: With increasing use of iliocaval stenting, complications have become more noticeable. Stent occlusion is one such outcome that has not been studied in detail. Characteristics of stent occlusion in addition to outcomes after recanalization are presented. METHODS: An analysis of 3468 initial iliocaval stents placed during an 18-year period from 1997 to 2015 was performed. A total of 102 stent occlusions were identified, amounting to a 3% stent occlusion rate...
November 12, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Nicholas L Opie, Sam E John, Gil S Rind, Stephen M Ronayne, Clive N May, David B Grayden, Thomas J Oxley
Access to the brain to implant recording electrodes has conventionally required a craniotomy. To mitigate risks of open brain surgery, we previously developed a stent-electrode array that can be delivered to the cortex via cerebral vessels. Following implantation of a stent-electrode array (Stentrode) in a large animal model, we investigated the longevity of highquality signals, by measuring bandwidth in animals implanted for up to six months; no signal degradation was observed. We also investigated whether bandwidth was influenced by implant location with respect to the superior sagittal sinus and branching cortical veins; it was not...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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