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Vein Stent

So Youn Lee, Eun Jae Jang, In-Ho Bae, Dae Sung Park, Doo Sun Sim, MyungHo Jeong
Everolimus inhibits stent restenosis and the WKYMV (fluorescein isothiocyanate) peptide promotes endothelial homing. Dextran is a natural polymer that is widely used as a pharmaceutical agent. The purpose of this study was to develop a double-drug-coated stent using a bidirectional coating system and to examine the surface shape with in vitro experiments. Stent length was 16 mm and strut thickness was 70 µm (Chonnam National University Hospital Tiger stent). Optical and scanning electron microscopy showed good coating without cracks or bubbles...
February 18, 2019: Journal of Biomaterials Applications
Laura Calsina Juscafresa, Maria Paramo Alfaro, Lukasz Grochowicz, Jose Ignacio Leal Lorenzo, Jose Ignacio Bilbao Jaureguizar
Aneurysms of the portal vein and its branches have been rarely described. Their natural history is unknown although large ones (>3cm in diameter) have been reported to cause rupture, thrombosis, duodenal or biliary obstruction, inferior vena cava compression and/or portal hypertension. We report the case of an incidentally diagnosed 4.5 cm splenic vein aneurysm repaired by endovascular treatment through a transhepatic route. The aneurysm was successfully excluded using a covered stent (Viabahn, Gore). The transhepatic route opens the possibility of offering a minimally invasive approach to vascular lesions of the portal vein system...
February 18, 2019: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
Daisuke Hachinohe, Azeem Latib, Alessandra Laricchia, Gianmarco Iannopollo, Ozan M Demir, Marco B Ancona, Antonio Mangieri, Damiano Regazzoli, Francesco Giannini, Lorenzo Azzalini, Satoru Mitomo, Alaide Chieffo, Matteo Montorfano, Mauro Carlino, Antonio Colombo
OBJECTIVES: The aims of this study were to evaluate the long-term clinical outcomes after coronary covered stent (CS) implantation and to compare the results according to the indications. BACKGROUND: To date, data on the long-term follow-up of coronary CS are limited, and no studies have been conducted to compare outcomes on the basis of specific lesions treated. METHODS: A total of 190 consecutive patients (212 lesions) implanted with CS and surviving until discharge between May 1997 and February 2017 were enrolled in this retrospective study...
February 17, 2019: Catheterization and Cardiovascular Interventions
Seshadri Raju, Alexander Knight, William Buck, Corbin May, Arjun Jayaraj
BACKGROUND: Wallstents (Boston Scientific, Marlborough, Mass) are most commonly used in iliac-caval stenting. Approximately 20% of stented limbs require reintervention to correct in-stent restenosis (ISR) or stent compression (SC). Corrective balloon dilation to rated stent caliber (isodilation) is not always successful. We investigated whether modest overdilation of the Wallstent by 2 to 4 mm (10%-20%) beyond the rated diameter would yield better mechanical clearance of ISR/SC, leading to a larger flow channel, improved conductance, reduction of peripheral venous pressure, and better clinical outcome...
March 2019: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Nachiket J Patel, Richard R Heuser
The concept of the PTFE-covered stent was introduced 25 years ago in the treatment of an aneurysmal vein graft. The study by Pavani et al. represents the largest cohort of patients treated with covered stents for Ellis type 3 perforations. Covered stents are effective in treating coronary perforations and remain an invaluable tool in the cardiac catheterization lab.
February 15, 2019: Catheterization and Cardiovascular Interventions
Allison B Hall, Emmanouil S Brilakis
Saphenous vein graft (SVG) percutaneous coronary intervention carries high rates of acute (no reflow and periprocedural myocardial infarction) and long-term (restenosis and re-occlusion) complications. Long-term follow-up from the two largest trials of drug-eluting vs. bare metal stents in SVG lesions (The Drug-Eluting Stents vs. Bare Metal Stents In Saphenous Vein graft Angioplasty and Is Drug-Eluting-Stenting Associated with Improved Results in Coronary Artery Bypass Grafts? Trial) definitely show no difference between the two stent types, suggesting that bare metal stents should be preferred given lower cost...
February 15, 2019: Catheterization and Cardiovascular Interventions
Xiao-Jun Song, Zhi-Li Liu, Rong Zeng, Chang-Wei Liu, Wei Ye
OBJECTIVE: The aim of this study is to examine the efficacy and safety of Angiojet rheolytic thrombectomy for the treatment of subacute deep venous thrombosis (DVT) in lower limbs. METHODS: A retrospective study was performed on 90 patients with subacute DVT (15 ∼90 days) in lower limbss in our center from November 2015 to December 2016. In total, 27 patients with subacute DVT in lower limbs treated with Angiojet rheolytic thrombectomy were included in the study, including 17 males and 10 females...
February 12, 2019: Annals of Vascular Surgery
Fan Zhou, Yanfeng Cui, Qian Zhao, Hao Xu, Maoheng Zu, Wei Xu
Renal arteriovenous fistula with renal artery aneurysms and dilated renal veins presents as an infrequent lesion. Endovascular therapy has recently been considered the first-line treatment for these conditions. We report a case of a patient with idiopathic renal arteriovenous fistula concomitant with multiple renal artery aneurysms that was successfully treated by the placement of a covered stent.
February 12, 2019: Annals of Vascular Surgery
Matthew Thomas, Andrew Hollingsworth, Reza Mofidi
BACKGROUND: Deep vein thrombosis (DVT) is associated with significant complications, including the development of post-thrombotic syndrome (PTS). Traditional management is with oral anticoagulation, but the endovascular techniques of catheter-directed thrombolysis (CDT), pharmaco-mechanical thrombolysis and venous stenting are now increasingly used. This study aims to review the evidence for these endovascular techniques in the management of acute lower limb DVT, and their role in the reduction of complications such as PTS...
February 12, 2019: Annals of Vascular Surgery
Sigrid Sandner, Philipp Angleitner, Günther Laufer, Daniel Zimpfer
This video tutorial is a guide to the application of the only currently available external stent for saphenous vein grafts, the VEST (Vascular Graft Solutions, Tel Aviv, Israel). We describe the preparation of the vein graft, selection of the appropriate VEST model, and the application procedure itself. We also present angiograms 2 years after coronary artery bypass grafting of unsupported versus VEST-supported saphenous vein grafts.
February 1, 2019: Multimedia Manual of Cardiothoracic Surgery: MMCTS
Amey D Sonavane, Deepak N Amarapurkar, Krantikumar R Rathod, Sundeep J Punamiya
Background: There has been significant improvement in understanding the etiology and management of Budd-Chiari Syndrome (BCS). Patients with chronic or acute-on-chronic BCS need radiological interventions in the form of angioplasty, hepatic vein/inferior vena cava stenting or Transjugular Intrahepatic Portosystemic Shunt (TIPS). Data regarding the long term follow up of patients undergoing TIPS is limited. We thus prospectively followed-up BCS patients who underwent TIPS at our center...
January 2019: Journal of Clinical and Experimental Hepatology
Masahiko Komagome, Yoshifumi Beck, Ryota Kogure, Tetsuya Mitsui, Rihito Nagata, Yoichi Miyata, Riki Ninomiya, Akira Maki
It is known that gastrointestinalbl eeding occurs due to portalstenosis as a complication in the hepato-biliary-pancreatic region at later postoperative stages. Our department has treated 5 portal stent cases since 2015. The pressure difference between the hepatic side and intestinalside at the portalstenosis site decreased from 9-14(median: 10)cmH2O to 0-6 (median: 2)cmH2O in all cases before and after placement of the stent, resulting in hemostasis(observation period 4-18 months, median: 12 months). In surgery of the hepato-biliary-pancreatic regions, veins flowing into the portal vein are also incised by dissection of the hepatoduodenal ligament...
January 2019: Gan to Kagaku Ryoho. Cancer & Chemotherapy
Cassius Iyad Ochoa Chaar, Afsha Aurshina
A 68-year-old man with a history of retroperitoneal fibrosis was referred to our clinic because of disabling bilateral lower extremity swelling and venous claudication, worse on the right side than on the left. He was noted to have a duplicated inferior vena cava and an iliac vein obliteration from retroperitoneal fibrosis. The patient underwent bilateral iliac vein stenting and had complete relief of symptoms through follow-up of 46 months with no recurrence.
December 2018: Journal of Vascular Surgery Cases and Innovative Techniques
Bekir Sanal, Omer Fatih Nas, Mehmet Korkmaz, Cuneyt Erdogan, Bahattin Hakyemez
Purpose: We evaluated carotid cavernous fistula (CCF) cases which were treated with various vascular routes and different embolization agents. Our aim was to present endovascular treatment procedures, clinical and radiological findings, and to discuss the safety and clinical efficacy of the treatment. Materials and Methods: The demographic information, presenting symptoms and clinical findings of 25 CCF cases in 23 patients treated with endovascular route were reviewed...
November 2018: Journal of Vascular and Interventional Neurology
Sarosh P Batlivala, Makram R Ebeid
Fontan completion in patients with complex cardiac anatomy, and specifically heterotaxy syndrome, can present unique physiologic considerations. For example, existing venous connections may be "unmasked" after a cavopulmonary anastomosis operation. We present the case of a child with heterotaxy, dextrocardia, single-ventricle physiology, and anomalous hepatic venous drainage that resulted in profound shunting and cyanosis. We addressed the problem utilizing a novel strategy with a "fenestrated" covered stent...
January 2019: Annals of Pediatric Cardiology
Wensen Jiang, Jiajia Lin, Alex H Chen, Jianwei Pan, Huinan Liu
A portable device was designed and constructed for studying the properties of biomaterials in physiologically relevant fluids under controllable flow conditions that closely simulate fluid flow inside the body. The device can fit entirely inside a cell incubator; and, thus, it can be used directly under standard cell culture conditions. An impedance-driven pump was built in the sterile flow loop to control the flow rates of fluids, which made the device small and portable for easy deployment in the incubator...
February 2019: Regenerative Biomaterials
Anja Hanser, Ludger Sieverding, Till-Karsten Hauser, Gesa Wiegand, Michael Hofbeck
OBJECTIVES: To describe the efficacy and safety of stent-retriever thrombectomy in infants with thrombosis of the superior vena cava (SVC) and innominate vein. BACKGROUND: Thrombosis of the SVC and of the innominate vein is a potentially life threatening complication in infants during intensive care treatment following major surgical procedures. To avoid reoperations, we evaluated interventional revascularization by stent-retriever thrombectomy. METHODS: From 2015 to 2017, five infants were diagnosed with acute thrombosis of the SVC and innominate vein following major cardiac or pediatric surgery...
February 9, 2019: Catheterization and Cardiovascular Interventions
Arshad Khan, Stephen Brienesse, Andrew Boyle, Nicholas Collins
While coronary artery bypass grafting remains an essential component of revascularization therapy, the use of venous conduits in the form of saphenous vein grafts is associated with a number of late sequelae, including graft stenosis and occlusion. The recognition of saphenous vein graft aneurysm, typically a late complication, may be associated with adverse outcomes. We describe the percutaneous therapy of saphenous vein graft aneurysm, utilizing contemporary devices, including newer generation covered stents, and the use of devices more commonly used in peripheral vascular intervention, reflecting the dilated nature of vein grafts...
February 9, 2019: Catheterization and Cardiovascular Interventions
Hai Yuan, Jing Sun, Zhengtong Zhou, Hengtao Qi, Maohua Wang, Dianning Dong, Xuejun Wu
BACKGROUND: Deep vein thrombosis (DVT) is a rare cause of arteriovenous fistula (AVF). The pathogenesis of acquired AVF after DVT remains unclear, and publications focusing on therapy and follow-up are also inadequate. In this study, the diagnosis and treatment of 24 patients with acquired AVF in the lower extremity after DVT was reported. METHODS: This is a retrospective study. We studied 24 patients with acquired AVF after DVT who were screened by ultrasound and confirmed by arteriography or computed tomographic arteriography (CTA) in our hospital...
February 5, 2019: International Angiology: a Journal of the International Union of Angiology
Hongzhou Duan, Dapeng Mo, Yang Zhang, Jiayong Zhang, Liang Li
OBJECTIVESymptomatic steno-occlusion of the proximal vertebral artery (VA) or subclavian artery (ScA) heralds a poor prognosis and high risk of stroke recurrence despite medical therapy, including antiplatelet or anticoagulant drugs. In some cases, the V2 segment of the cervical VA is patent and perfused via collateral vessels. The authors describe 7 patients who were successfully treated by external carotid artery (ECA)-saphenous vein (SV)-VA bypass.METHODSSeven cases involving symptomatic patients were retrospectively studied: 3 cases of V1 segment occlusion, 2 cases of severe in-stent restenosis in the V1 segment, and 2 cases of occlusion of the proximal ScA...
February 1, 2019: Neurosurgical Focus
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