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stent implantation

Masao Imai, Junichi Tazaki, Takeshi Kimura, Katsumi Inoue
No abstract text is available yet for this article.
September 20, 2018: Cardiovascular Intervention and Therapeutics
François Dérimay, Gilles Rioufol, Guillaume Cellier, Géraud Souteyrand, Gérard Finet
AIMS: Initial proximal optimization technique (POT) in provisional stenting improves global malapposition, side-branch (SB) obstruction (SBO) and conservation of arterial circularity. The specific mechanical effects of a final POT sequence concluding the main provisional stenting techniques, on the other hand, are unknown. METHODS AND RESULTS: Synergy™ stents were implanted on fractal coronary bifurcation bench models using the main provisional stenting techniques (n = 5 per group): kissing-balloon inflation (KBI), snuggle, and rePOT (initial POT + SB inflation + final POT)...
September 13, 2018: International Journal of Cardiology
Iacopo Valente, Francesco D'Argento, Andrea Alexandre, Emilio Lozupone, Giuseppe Garignano, Alessandro Pedicelli
Background The Barrel vascular reconstruction device is an electrolytically detachable laser-cut closed-cell stent used for neck reconstruction in wide-necked bifurcation aneurysms to support coiling without necessitating dual stent implantation. The purpose is to lower the metal-to-artery ratio and its inherent risk of thromboembolic complications of multiple stents. Case description A 53-year-old woman presenting with subarachnoid hemorrhage due to acutely ruptured basilar tip aneurysm underwent emergency endovascular embolization with the Barrel vascular reconstruction device...
September 20, 2018: Interventional Neuroradiology
Amina Rezkallah, Thibaud Mathis, Philippe Denis, Laurent Kodjikian
INTRODUCTION: Intravitreal injections (IVI) of slow-release dexamethasone (DEX) are generally well tolerated. Ocular hypertension (OHT) and cataracts are the most common adverse effects of DEX-implant (DEX-I). MATERIAL AND METHODS: The cases reported concern five eyes in four DEX-I IVI high-responder patients whose intraocular pressure (IOP) returned to normal after administration of a XEN gel stent with mitomycin subconjunctival injection, thus allowing the continued use of DEX-I which was the only therapeutic option for these patients...
September 18, 2018: Journal of Glaucoma
Marco Ferlini, Roberto Dore, Gianmarco Iannopollo, Gaetano M De Ferrari, Luigi Oltrona Visconti
: A 54-year-old woman with a history of stage IV nonsmall-cell lung cancer, on treatment with chemiotherapy was hospitalized for acute coronary syndrome. Coronary angiography showed a tight stenosis of ostial left main coronary artery (LMCA) probably caused by external compression. Computed tomography scan confirmed LMCA compression and entrapment between a neoplastic mass and the root of the aorta, with vessel collapsing during diastole but patency and narrowing in systole. A drug-eluting stent was then successfully implanted at LMCA ostium without further episodes of angina...
September 17, 2018: Journal of Cardiovascular Medicine
Rocco A Montone, Giampaolo Niccoli
No abstract text is available yet for this article.
September 20, 2018: Future Cardiology
Bimmer E Claessen, José P S Henriques, Jeroen Vendrik, Kirsten Boerlage-van Dijk, René J van der Schaaf, Martijn Meuwissen, Niels van Royen, A T Marcel Gosselink, Marleen H van Wely, Atilla Dirkali, E Karin Arkenbout, Jan J Piek, Jan Baan
OBJECTIVES: To investigate the relative performance of treatment with a paclitaxel-eluting balloon (PEB) compared with an everolimus-eluting stent (EES) for in-stent restenosis (ISR) in patients with diabetes mellitus (DM). BACKGROUND: ISR remains a challenge in contemporary clinical practice, particularly in patients with DM. METHODS: In the multicenter randomized DARE trial, patients with BMS or DES ISR were randomized in a 1:1 fashion to treatment with a PEB or an EES...
September 19, 2018: Catheterization and Cardiovascular Interventions
Young Kwon Choi, Ji Yong Ahn, Hee Kyong Na, Kee Wook Jung, Do Hoon Kim, Jeong Hoon Lee, Kee Don Choi, Ho June Song, Gin Hyug Lee, Hwoon-Yong Jung
BACKGROUND: Through-the-scope implantation of self-expandable metal stents can be used for the palliation of malignant gastric outlet obstruction. Although covered stents were developed to prevent tumor ingrowth, often seen with uncovered stents, migration is still a major problem. Especially, surgical treatment is required for some patients if distal migration occurs. AIMS: To evaluate the usefulness of the newly designed winged stent that was developed to prevent distal stent migration...
September 19, 2018: Digestive Diseases and Sciences
Mojtaba Baktashian, Sara Saffar Soflaei, Negin Kosari, Mansoor Salehi, Alireza Khosravi, Maliheh Ahmadinejad, Mohsen Moohebati, Mahmood Ebrahimi, Farzad Rahmani, Ramin Khameneh-Bagheri, Mostafa Ahmadi, Fatemeh Sadabadi, Maryam Tayefi, Suzan Bazhdanzadeh, Gordon A Ferns, Seyed Mohammad Hashemi, Alireza Pasdar, Majid Ghayour-Mobarhan
BACKGROUND: In-stent restenosis (ISR) is one adverse outcome of coronary stent implantation. Although using drug-eluting stents has reduced the rate of ISR, it remains a major problem. Here, we have investigated the relationship between several patient characteristics including serum high sensitive C-reactive protein (hs-CRP) and ISR. METHODS: This was a case-control study comprising 104 individuals with ISR and 202 patients without. Baseline characteristics were collected using a questionnaire...
August 18, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
Haijie Che, Jingjun Jiang, Hao Liu, Jichang Wei, Xiaoming Zhang
Background Iliofemoral vein stenosis or occlusion is a common cause of severe chronic venous insufficiency. Endovascular venous stenting has become a preferred treatment because it is minimally invasive and has a high safety profile. Despite the wide application of the wallstent, it is not specifically designed for veins. There are currently few studies on braided stents in the field of veins. We designed a novel braided vein stent, which has higher radial resistive force and more optimized looped ends structure compared with the wallstent...
September 18, 2018: Phlebology
Taeyoung Kim, Yong-Gu Lee
Non-invasive delivery of artificial implants, stents or devices in patients is vital for rapid and successful recovery. Unfortunately, because the delivery passage is often narrower than the size of the delivered object, a compromise between the shape that is effective at the targeted location and a thin form that allows smooth unobstructed travel to the destination is needed. We address this problem through two key technologies: 3D printing and shape memory polymers (SMPs). 3D printing can produce patient-customizable objects, and SMPs can change their initially formed shape to the final desired shape through external stimulation...
September 17, 2018: Scientific Reports
Karthik Ramachandran, Tiziana Di Luccio, Artemis Ailianou, Mary Beth Kossuth, James P Oberhauser, Julia A Kornfield
Biodegradable polymers open the way to treatment of heart disease using transient implants (bioresorbable vascular scaffolds, BVSs) that overcome the most serious complication associated with permanent metal stents-late stent thrombosis. Here, we address the long-standing paradox that the clinically approved BVS maintains its radial strength even after 9 mo of hydrolysis, which induces a ∼40% decrease in the poly l-lactide molecular weight ( Mn ). X-ray microdiffraction evidence of nonuniform hydrolysis in the scaffold reveals that regions subjected to tensile stress during crimping develop a microstructure that provides strength and resists hydrolysis...
September 17, 2018: Proceedings of the National Academy of Sciences of the United States of America
Tarek M Bedair, Il Jae Min, Wooram Park, Yoon Ki Joung, Dong Keun Han
Polymer-based drug-eluting stents (DESs) represented attractive application for the treatment of cardiovascular diseases; however, polymer coating has caused serious adverse responses to tissues such as chronic inflammation due to acidic by-products. Therefore, polymer-free DESs have recently emerged as promising candidates for the treatment; however, burst release of drug(s) from the surface limited its applications. In this study, we focused on delivery of therapeutic drug from polymer-free (or -less) DESs through surface modification using cobalt oxide nanowires (Co3 O4 NWs) to improve and control the drug release...
September 2018: Journal of Biomaterials Applications
Christoph Klinger, Bettina Riecken, Johannes Müller, Anja Westphal, Joachim Löffler, Eckhart Froehlich, Karel Caca
PURPOSE:  The purpose of this study was to determine accuracy and necessity of long-term Doppler ultrasound (DU) surveillance of transjugular intrahepatic portosystemic shunt (TIPS) patency after implantation of an ePTFE-covered stent-graft (Viatorr). METHODS:  This single-center retrospective study includes 228 consecutive cirrhotic patients with TIPS implantation due to portal hypertensive complications. Standardized DU surveillance was scheduled 3 - 5 days, 3 months, and 6 months after TIPS implantation and every 6 months thereafter...
September 2018: Zeitschrift Für Gastroenterologie
Lanfang Zhang, Xiaoyong Qi, Xinwei Jia
BACKGROUND The aim of this study was to investigate the optimal route of administration of diltiazem in emergency PCI and to provide the best clinical treatment for ASTEMI patients. MATERIAL AND METHODS A total of 90 patients with ASTEMI treated in our hospital from January 2015 to January 2016 were selected. Prior to thrombus aspiration, a thrombus aspiration catheter was used to perform diltiazem injection at the distal end of the infarct-related artery (IRA). We chose the acute ST-elevation myocardial infarction (ASTEMI) patients treated with direct PCI to compare different administration routes of diltiazem...
September 17, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Eisuke Usui, Taishi Yonetsu, Yoshihisa Kanaji, Masahiro Hoshino, Masao Yamaguchi, Masahiro Hada, Rikuta Hamaya, Yoshinori Kanno, Tadashi Murai, Tetsumin Lee, Kenzo Hirao, Tsunekazu Kakuta
AIMS: We sought to investigate subclinical neoatherosclerotic changes and the healing response to sirolimus-eluting stents (SESs) to clarify the clinical safety and the neointimal pathology of SESs more than 10 years after implantation. METHODS AND RESULTS: We investigated a total of 180 SESs without stent failure in 103 patients who underwent optical coherence tomography (OCT) examination of stented vessels more than 5 years after implantation. We assessed the presence or absence of neoatherosclerosis and the healing process by OCT and compared the results between stents at 5 to 10 years after implantation (Group A, 114 stents with 19,873 struts) and stents more than 10 years after implantation (Group B, 66 stents with 10,937 struts)...
September 18, 2018: EuroIntervention
Yanqiang Wu, Xianghua Fu
BACKGROUND: This study aimed to explore the correlation of baseline, procedural, and postprocedure characteristics with the risk of rapid angiographic stenotic progression (RASP) and restenosis in coronary artery disease (CAD) patients after percutaneous coronary intervention (PCI) with drug-eluting stents implantation. METHODS: Two hundred fourteen CAD patients underwent PCI with drug-eluting stents implantation were consecutively enrolled. Baseline, procedural, and postprocedure characteristics of patients were collected for analysis...
September 17, 2018: Journal of Clinical Laboratory Analysis
Karin A Pacheco
Surgical implants are essential elements of repair procedures to correct worn out joints, damaged spinal components, heart and vascular disease, and chronic pain. However, many of the materials that provide stability, flexibility, and durability to the implants are also immunogenic. Fortunately, allergic responses to surgical implants are infrequent. When they do occur, however, the associated pain, swelling, inflammation, and decreased range of motion can significantly impair the implant function. Given the high numbers of joint replacements performed in the developed world, allergic reactions to orthopedic implants form the largest category of allergic responses...
September 15, 2018: Clinical Reviews in Allergy & Immunology
Kambis Mashayekhi, Thomas G Nührenberg, Aurel Toma, Michael Gick, Miroslaw Ferenc, Willibald Hochholzer, Thomas Comberg, Jürgen Rothe, Christian M Valina, Nikolaus Löffelhardt, Mohammed Ayoub, Min Zhao, Johannes Bremicker, Nikolaus Jander, Jan Minners, Philipp Ruile, Michael Behnes, Ibrahim Akin, Tim Schäufele, Franz-Josef Neumann, Heinz Joachim Büttner
OBJECTIVES: The aim of this study was to investigate whether percutaneous coronary intervention (PCI) of chronic total occlusions (CTOs) improves left ventricular function. BACKGROUND: The benefit of PCI in CTOs is still controversial. METHODS: Patients with CTOs who were candidates for PCI were eligible for the study and were randomized to PCI or no PCI of CTO. Relevant coexisting non-CTO lesions were treated as indicated. Patients underwent cardiac magnetic resonance imaging at baseline and at 6 months...
September 6, 2018: JACC. Cardiovascular Interventions
Julien Plessis, Sébastien Hascoët, Alban Baruteau, François Godart, Laurianne Le Gloan, Karine Warin Fresse, Nabil Tahhan, Jean-Yves Riou, Béatrice Guyomarch, Jérôme Petit, Patrice Guérin
OBJECTIVES: The aim of this study was to describe and analyze data from patients treated in France with the Edwards SAPIEN transcatheter heart valve in the pulmonary position. BACKGROUND: The Edwards SAPIEN valve has recently been introduced for percutaneous pulmonary valve implantation (PPVI). METHODS: From April 2011 to May 2017, 71 patients undergoing PPVI were consecutively included. RESULTS: The median age at PPVI was 26...
September 6, 2018: JACC. Cardiovascular Interventions
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