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Valved stent

K Schmidt, T Pottgießer, S Meckel, D Duerschmied, C Bode, J Reinöhl
No abstract text is available yet for this article.
September 7, 2016: Der Internist
Caitlin Martin, Wei Sun
Transcatheter aortic valve (TAV) implantation within a failed bioprosthetic valve is a growing trend for high-risk patients. The non-compliant stent of the previous prosthesis may prevent full expansion of the TAV, which has been shown to distort the leaflet configuration, and has been hypothesized to adversely affect durability. In this study, TAV leaflet fatigue damage under cyclic pressurization in the setting of stent underexpansion by 0 (fully expanded), 1, 2 and 3 mm was simulated using finite element analysis to test this hypothesis...
October 12, 2016: Annals of Biomedical Engineering
Yohei Shibata, Hideki Ishii, Susumu Suzuki, Akihito Tanaka, Yosuke Tatami, Shingo Harata, Tomoyuki Ota, Yusaku Shimbo, Yohei Takayama, Ayako Kunimura, Kenshi Hirayama, Kazuhiro Harada, Naohiro Osugi, Toyoaki Murohara
AIMS: Previous studies have shown that aortic valve calcification (AVC) was associated with cardiovascular events and mortality. On the other hand, periprocedural myocardial injury (PMI) in percutaneous coronary intervention (PCI) is a well-known predictor of subsequent mortality and poor clinical outcomes. The purpose of the study was to assess the hypothesis that the presence of AVC could predict PMI in PCI. METHODS: This study included 370 patients treated with PCI for stable angina pectoris...
October 13, 2016: Journal of Atherosclerosis and Thrombosis
K Pragnya, R K Jain, Sindhu Joshi, Sreedhar Nagaradona
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
Nikolaos A Papakonstantinou, Nikolaos G Baikoussis, Panagiotis Dedeilias, Michalis Argiriou, Christos Charitos
A hybrid strategy, firstly performed in the 1990s, is a combination of tools available only in the catheterization laboratory with those available only in the operating room in order to minimize surgical morbidity and face with any cardiovascular lesion. The continuous evolution of stent technology along with the adoption of minimally invasive surgical approaches, make hybrid approaches an attractive alternative to standard surgical or transcatheter techniques for any given set of cardiovascular lesions. Examples include hybrid coronary revascularization, when an open surgical anastomosis of the left internal mammary artery to the left anterior descending coronary artery is performed along with stent implantation in non-left anterior descending coronary vessels, open heart valve surgery combined with percutaneous coronary interventions to coronary lesions, hybrid aortic arch debranching combined with endovascular grafting for thoracic aortic aneurysms, hybrid endocardial and epicardial atrial fibrillation procedures, and carotid artery stenting along with coronary artery bypass grafting...
October 8, 2016: Journal of Cardiology
F Soria, J E de la Cruz, E Morcillo, J Rioja, F M Sánchez-Margallo
Double-J ureteral stents disposal is associated with the appearance of side effects in up to 90% of the patients. The main causes of these symptoms are related to stent's design and the materials they are manufactured from. Vesicoureteral reflux and bladder trigone irritation are the etiopathogenic causes of ureteral stents associated morbidity. Due to this, and in order to improve patients' quality of life, stents that avoid reflux have been developed. Among anti-reflux designs, the first was a double-J stent the bladder tip of which is provided with a polymeric membrane that prevents retrograde flow of urine through its internal drainage channel...
October 2016: Archivos Españoles de Urología
Jason R Cuomo, Gyanendra K Sharma, Preston D Conger, Neal L Weintraub
Radiation-induced cardiovascular disease (RICVD) is the most common nonmalignant cause of morbidity and mortality among cancer survivors who have undergone mediastinal radiation therapy (RT). Cardiovascular complications include effusive or constrictive pericarditis, cardiomyopathy, valvular heart disease, and coronary/vascular disease. These are pathophysiologically distinct disease entities whose prevalence varies depending on the timing and extent of radiation exposure to the heart and great vessels. Although refinements in RT dosimetry and shielding will inevitably limit future cases of RICVD, the increasing number of long-term cancer survivors, including those treated with older higher-dose RT regimens, will ensure a steady flow of afflicted patients for the foreseeable future...
September 26, 2016: World Journal of Cardiology
Pranav Loyalka, Angelo Nascimbene, Michael Schechter, Marija Petrovic, Ajay Sundara Raman, Igor D Gregoric, Biswajit Kar
INTRODUCTION: Transcatheter aortic valve implantation (TAVI) in patients with degenerated bioprosthetic aortic valve has been successfully performed as an alternative to surgery. We describe our initial experience of valve-in-valve TAVI in five patients, using new generation Edwards Sapien 3 transcatheter heart valves implanted into degenerated 19 mm bioprosthetic valves. 20-mm Edwards S3 valves were offered for compassionate use. All patients had significant aortic valve stenosis. METHODS AND RESULTS: The main vascular access was achieved and pre-closed with two Proglide closure devices in one patient and Prostar closure devices in four patients...
October 3, 2016: Catheterization and Cardiovascular Interventions
Taylor Suess, Joseph Anderson, Andrea Sherman, Tyler Remund, Kathryn Pohlson, Gopinath Mani, Stephen Gent, Patrick Kelly
OBJECTIVE: This study proposes to establish a simulation-based technique for evaluating shear accumulation in stent grafts and to use the technique to assess the performance of a novel branched stent graft system. METHODS: Computational fluid dynamics models, with transient boundary conditions, particle injection, and rigid walls, simplifying assumptions were developed and used to evaluate the shear accumulation in various stent graft configurations with a healthy aorta as comparison...
September 29, 2016: Journal of Vascular Surgery
Sitaram M Emani, Breanna L Piekarski, David Zurakowski, Christopher A Baird, Audrey C Marshall, James E Lock, Pedro J Del Nido
BACKGROUND: Options for cardiac valve replacement in children are limited to fixed-diameter prostheses that do not accommodate for somatic growth. An externally stented bovine jugular vein graft has been modified for surgical valve replacement in pediatric patients, with the intention of subsequent valve expansion in the catheterization laboratory as the child grows. METHODS: Pediatric patients at a single institution who underwent surgical implantation of an expandable bovine jugular vein valve between 2010 and 2014 were reviewed retrospectively...
August 31, 2016: Journal of Thoracic and Cardiovascular Surgery
Tim Seidler, Mark Hünlich, Miriam Puls, Gerd Hasenfuß, Claudius Jacobshagen
BACKGROUND: Despite the completion of more than 60,000 transcutaneous aortic valve implantations (TAVI) per year and an approximately 10-15 % incidence of vascular access site complications (VAC), there is a paucity of data on the efficacy and safety of percutaneous VAC treatment. HYPOTHESIS: Percutaneous endovascular treatment will be an effective treatment of VAC and associated with a low rate of surgical repair. Despite stent placement in proximity to the hip joint, endovascular treatment will be only rarely associated with disabling symptoms or complications...
September 29, 2016: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
Veysel Tosun, Necmettin Korucuk, Mustafa Mustafa Karakaş, Ünal Güntekin
Congenitally corrected transposition of the great arteries is a rare abnormality accounting for approximately 1% of clinically apparent congenital heart disease. Age at time of diagnosis and survival rate vary and depend on associated anomalies, including pulmonary stenosis, ventricular septal defect, atrial septal defect, atrioventricular block, and atrioventricular valve regurgitation. Reported cases of corrected transposition of the great arteries with single coronary ostium anomaly and atrial septal defect are very rare...
September 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
Vikas Singh, Alex P Rodriguez, Badal Thakkar, Nileshkumar J Patel, Abhijit Ghatak, Apurva O Badheka, Carlos E Alfonso, Eduardo de Marchena, Rahul Sakhuja, Ignacio Inglessis-Azuaje, Igor Palacios, Mauricio G Cohen, Sammy Elmariah, William W O'Neill
Transcatheter aortic valve replacement (TAVR) with percutaneous coronary intervention (PCI) has emerged as a less-invasive therapeutic option for high surgical risk patients with aortic stenosis and coronary artery disease. The aim of this study was to determine the outcomes of TAVR when performed with PCI during the same hospitalization. We identified patients using the International Classification of Diseases, Ninth Revision, Clinical Modification procedure codes from the Nationwide Inpatient Sample between the years 2011 and 2013...
August 30, 2016: American Journal of Cardiology
Ahmet Yigit Goktay, Cagin Senturk
Deep venous thrombosis (DVT) is a common disorder with a significant mortality rate. Successful endovascular treatment of acute DVT is most likely to be achieved in patients with recently formed thrombus, (<10-14 days) with acute iliofemoral DVT. Endovascular treatment options include: Catheter-directed thrombolysis (CDT), pharmacomechanical catheter-directed thrombolysis (PCDT), percutaneous aspiration thrombectomy (PAT), vena cava filter protection, venous balloon dilatation and venous stent implantation...
September 24, 2016: Advances in Experimental Medicine and Biology
Paul J Chai
No abstract text is available yet for this article.
August 28, 2016: Journal of Thoracic and Cardiovascular Surgery
Aly Ghoneim, Ismail Bouhout, Philippe Demers, Amine Mazine, Mary Francispillai, Ismail El-Hamamsy, Michel Carrier, Yoan Lamarche, Denis Bouchard
OBJECTIVE: Aortic valve replacement (AVR) in patients with a small aortic annulus is a challenging problem. The objective of this study was to compare 4 surgical approaches in terms of hemodynamics and perioperative outcomes. METHODS: A retrospective single-center study included 351 consecutive patients with a small aortic annulus (≤21 mm) who underwent aortic valve surgery between January 2007 and December 2014. Surgical techniques included standard AVR in 259 (74%) patients, aortic root enlargement in 20 (6%), implantation of a stentless bioprosthesis in 23 (6%), and sutureless AVR in 49 (13%)...
October 2016: Journal of Thoracic and Cardiovascular Surgery
Maurizio Taramasso, Azeem Latib, Paolo Denti, Fabian Nietlispach, Kevin Lynn, Nikola Cesarovic, Alessandro Addis, Maximilian Y Emmert, Andrea Guidotti, Hugo Vanermen, Francesco Maisano
AIMS: The aim of this study was to evaluate the safety, technical feasibility and performance of a new trans-catheter tricuspid repair system. METHODS AND RESULTS: Thirty-one adult swine underwent implantation of a transcatheter tricuspid remodelling system under general anaesthesia. The steerable transcatheter device was introduced through a 24 Fr femoral sheath into the right femoral vein and delivered to the tricuspid annulus on the beating heart. A fixation element was implanted into the tricuspid annulus...
September 18, 2016: EuroIntervention
Efthymios D Avgerinos, Omar El-Shazly, Geetha Jeyabalan, George Al-Khoury, Eric Hager, Michael J Singh, Michel S Makaroun, Rabih A Chaer
BACKGROUND: Inferior vena cava (IVC) thrombosis may occur in patients with iliofemoral deep venous thrombosis (DVT), and its impact on thrombolysis outcomes is poorly defined. This study compared outcomes of patients undergoing thrombolysis for acute iliofemoral DVT with and without IVC involvement. METHODS: Patients who underwent thrombolysis for iliofemoral DVT between May 2007 and March 2014 were identified from a prospectively maintained database and divided into two groups: those with IVC involvement and those without...
October 2016: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Ditte Dencker, Mikkel Taudorf, N H Vincent Luk, Michael B Nielsen, Klaus F Kofoed, Torben V Schroeder, Lars Søndergaard, Lars Lönn, Ole De Backer
Vascular access and closure remain a challenge in transcatheter aortic valve replacement (TAVR). This single-center study aimed to report the incidence, predictive factors, and clinical outcomes of access-related vascular injury and subsequent vascular intervention. During a 30-month period, 365 patients underwent TAVR and 333 patients (94%) were treated by true percutaneous transfemoral approach. Of this latter group, 83 patients (25%) had an access-related vascular injury that was managed by the use of a covered self-expanding stent (n = 49), balloon angioplasty (n = 33), or by surgical intervention (n = 1)...
October 15, 2016: American Journal of Cardiology
Erin A Woods, Margaret L Ackman, Michelle M Graham, Sheri L Koshman, Rosaleen M Boswell, Arden R Barry
BACKGROUND: Current guidelines recommend triple antithrombotic therapy (TAT), defined as acetylsalicylic acid (ASA), clopidogrel, and warfarin, for patients with nonvalvular atrial fibrillation who have undergone percutaneous coronary intervention with stent implantation. The choice of anticoagulant/antiplatelet therapy in this population is ambiguous and complex, and prescribing patterns are not well documented. OBJECTIVE: To characterize local prescribing patterns for anticoagulant/antiplatelet therapy after percutaneous coronary intervention in patients with nonvalvular atrial fibrillation...
July 2016: Canadian Journal of Hospital Pharmacy
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