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Future of heart valve replacements

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https://www.readbyqxmd.com/read/29343297/pulmonary-valve-replacement-after-right-ventricular-outflow-tract-reconstruction-with-homograft-vs-contegra%C3%A2-a-case-control-comparison-of-mortality-and-morbidity
#1
Nicolas Poinot, Jean-Francois Fils, Hélène Demanet, Hugues Dessy, Dominique Biarent, Pierre Wauthy
BACKGROUND: Repair of congenital heart defects involving the right ventricular outflow tract may require the implantation of a right ventricle to pulmonary artery conduit. This conduit is likely to be replaced during childhood. This study compares the operative outcomes of the replacement procedure of Contegra® and homografts in pulmonary position. METHODS: From 1999 to 2016, 82 children underwent 87 right ventricle to pulmonary artery conduit replacements (60 Contegra® and 27 homografts)...
January 17, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29339677/acute-myocardial-infarction-shortly-after-valve-in-valve-transcatheter-aortic-valve-implantation-successfully-managedwith-challenging-percutaneous-coronary-intervention
#2
Kenan Yalta, Çağlar Kaya, Yüksel Aksoy, Mustafa Yılmaztepe, Fatih Kardaş
In recent years, transcatheter aortic valve implantation (TAVI) has been considered a novel option for the management of surgically high-risk patients requiring aortic valve replacement. Presently described is a case of acute coronary syndrome (ACS) managed with a challenging primary percutaneous coronary intervention (PCI) shortly after a valve-in-valve TAVI intervention. This case highlights 2 important issues: PCI may be an option for the management of coronary heart disease in patients after TAVI even in the setting of demanding features associated with coronary osteal engagement, and secondly, TAVI may serve as a potential risk factor for future coronary ischemic syndromes, largely due to its potential adverse effects on coronary flow dynamics, etc...
January 2018: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29327671/tissue-engineered-heart-valves-a-call-for-mechanistic-studies
#3
Kevin Blum, Joseph Drews, Christopher K Breuer
Heart valve disease carries a substantial risk of morbidity and mortality. Outcomes are significantly improved by valve replacement, but currently-available mechanical and biological replacement valves are associated with complications of their own. Mechanical valves have a high rate of thromboembolism and require lifelong anticoagulation. Biological prosthetic valves have a much shorter lifespan, and are prone to tearing and degradation. Both types of valves lack the capacity for growth, making them particularly problematic in pediatric patients...
January 12, 2018: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/29304514/antithrombotic-treatment-after-transcatheter-heart-valves-implant
#4
Sabato Sorrentino, Gennaro Giustino, Kamilia Moalem, Ciro Indolfi, Roxana Mehran, George D Dangas
Transcatheter heart valve replacement technology was introduced as alternative to surgery for the growing high-risk profile population. Developed first, aortic valve replacement (TAVR) became a standard of care for patients with severe aortic stenosis at high operative risk, with a potential future use also for low-risk subjects. In the last decade, a multitude of transcatheter mitral valve replacement (TMVR) devices have been developed for the treatment of severe mitral regurgitation, with encouraging results coming from first-in-man and feasibility studies...
January 5, 2018: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/29229649/isolated-tricuspid-regurgitation-outcomes-and-therapeutic-interventions
#5
REVIEW
Erin A Fender, Chad J Zack, Rick A Nishimura
Isolated tricuspid regurgitation (TR) can be caused by primary valvular abnormalities such as flail leaflet or secondary annular dilation as is seen in atrial fibrillation, pulmonary hypertension and left heart disease. There is an increasing recognition of a subgroup of patients with isolated TR in the absence of other associated cardiac abnormalities. Left untreated isolated TR significantly worsens survival. Stand-alone surgery for isolated TR is rarely performed due to an average operative mortality of 8%-10% and a paucity of data demonstrating improved survival...
December 11, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29198154/population-trends-in-mitral-valve-surgery-in-finland-between-1997-and-2014-the-finnish-cvd-register
#6
Monna E Myllykangas, Jenni M Aittokallio, Arto Pietilä, Veikko V Salomaa, Jarmo M Gunn, Tuomas O Kiviniemi, Teemu J Niiranen
OBJECTIVES: Contemporary, nationwide data on trends in mitral valve surgery are scarce. Our aim was to investigate changes in procedure rates, patient selection, and post-procedural prognosis of open-heart mitral valve surgery in Finland. DESIGN: We combined data from three nationwide administrative registers with compulsory reporting. We identified patients who had undergone first-ever open-heart mitral valve surgery between 1997 and 2014 and followed them for adverse events...
December 3, 2017: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/29194051/blood-tissue-and-imaging-biomarkers-in-calcific-aortic-valve-stenosis-past-present-and-future
#7
Mylène Shen, Lionel Tastet, Jutta Bergler-Klein, Philippe Pibarot, Marie-Annick Clavel
PURPOSE OF REVIEW: Calcific aortic valve stenosis is the most prevalent valvular heart disease in the high-income countries. To this date, no medical therapy has been proven to prevent or to stop the progression of aortic valve stenosis. The physiopathology of aortic valve stenosis is highly complex and involves several signalling pathways, as well as genetic related factors, which delay the elaboration of effective pharmacotherapies. Moreover, it is difficult to predict accurately the progression of the valve stenosis and finding the optimal timing for aortic valve replacement remains challenging...
November 30, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29128570/outcomes-in-degenerative-mitral-regurgitation-current-state-of-the-art-and-future-directions
#8
REVIEW
Milind Y Desai, Francesco Grigioni, Marco Di Eusanio, Matteo Saccocci, Maurizio Taramasso, Francesco Maisano, Rakesh M Suri, A Marc Gillinov
Mitral regurgitation (MR) is the one of the most frequent valvular heart diseases in the developed world, often requiring surgical correction. Degenerative MR is the most common type of non-ischemic, organic MR in the western world. Since no medical treatment has been shown to be effective in preventing the consequences of volume overload in asymptomatic degenerative MR, risk stratification is essential. Currently, this is achieved using clinical and precisely quantified echocardiographic parameters, with newer technologies like cardiac magnetic resonance gaining increasing prominence...
November 9, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29104639/snail1-is-positively-correlated-with-atrial-fibrosis-in-patients-with-atrial-fibrillation-and-rheumatic-heart-disease
#9
Furong Guo, Xin Yi, Mingjiang Li, Jinrong Fu, Sha Li
The present study investigated the association between Snail1 and atrial fibrosis in patients with atrial fibrillation (AF) and rheumatic heart disease (RHD) and to determine the possible mechanism underlying this interrelation. A total of 19 patients were included in the current study and were divided into two groups: A sinus rhythm (SR) group (n=9) and an AF group (n=10). All patients underwent heart valve replacement surgery, during which ~200 mg right atrium tissue was obtained. Hematoxylin and eosin and Masson's trichrome-stained sections were used to evaluate the morphological changes of cardiomyocytes and the level of fibrosis...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29072064/transcatheter-aortic-valve-implantation-tavi-in-2017-recent-advances-and-future-development
#10
Florian Hecker, Mani Arsalan, Won-Keun Kim, Thomas Walther
Transcather aortic valve implantation (TAVI) has become a safe and indispensable treatment option for patients with severe symptomatic aortic stenosis (AS) who are at high or prohibitive surgical risk. In the past years, outcomes after TAVI have improved significantly and TAVI has emerged as a qualified alternative to surgical aortic valve replacement (SAVR) in the treatment of intermediate risk patients. Besides optimized patient screening, advanced imaging and increased examiner experience, transcatheter heart valve (THV) design addressed several key issues like vascular complications, pacemaker implantation and paravalvular leakage rates and improved considerably over time...
October 25, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29032762/a-review-of-evolutionary-and-cyclical-changes-in-the-surgical-approach-to-aortic-valve-disease
#11
Marco Piciche, Guglielmo Actis Dato, Roberto Lorusso, Francesco Musumeci
INTRODUCTION: Aortic valve surgery is no exception to the general rule that history is a cycle in many fields. This manuscript aims to assist readers in transitioning from past to present and on into the future within the field of aortic valve surgery. METHODS: The existing literature has been examined, including old and modern articles published on pubmed, old articles non visible on pubmed, old and recent books on the history of medicine, looking for similarities and repetitions in techniques and surgical approaches to the aortic valve in the past and the current times...
October 9, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28982560/surgery-versus-transcatheter-interventions-for-significant-paravalvular%C3%A2-prosthetic-leaks
#12
Xavier Millán, Ismail Bouhout, Anna Nozza, Karla Samman, Louis-Mathieu Stevens, Yoan Lamarche, Antonio Serra, Anita W Asgar, Ismail El-Hamamsy, Raymond Cartier, Michel Pellerin, Stephane Noble, Phillipe Demers, Reda Ibrahim, E Marc Jolicœur, Denis Bouchard
OBJECTIVES: This study sought to assess the relative merit of surgical correction (SC) versus transcatheter reduction on long-term outcomes in patients with significant paravalvular leak (PVL) refractory to medical therapy. BACKGROUND: PVL is the most frequent dysfunction following prosthetic valve replacement. Although repeat surgery is the gold standard, transcatheter reduction (TR) of PVL has been associated with reduced mortality. METHODS: From 1994 to 2014, 231 patients underwent SC (n = 151) or TR (n = 80) PVL correction...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28980492/computational-methods-for-the-aortic-heart-valve-and-its-replacements
#13
Rana Zakerzadeh, Ming-Chen Hsu, Michael S Sacks
Replacement with a prosthetic device remains a major treatment option for the patients suffering from heart valve disease, with prevalence growing resulting from an ageing population. While the most popular replacement heart valve continues to be the bioprosthetic heart valve (BHV), its durability remains limited. There is thus a continued need to develop a general understanding of the underlying mechanisms limiting BHV durability to facilitate development of a more durable prosthesis. In this regard, computational models can play a pivotal role as they can evaluate our understanding of the underlying mechanisms and be used to optimize designs that may not always be intuitive...
October 23, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28963863/hemocompatibility-of-hyaluronan-enhanced-linear-low-density-polyethylene-for-blood-contacting-applications
#14
Rachael Simon-Walker, John Cavicchia, David A Prawel, Lakshmi Prasad Dasi, Susan P James, Ketul C Popat
Despite their overall success, different blood-contacting medical devices such as heart valves, stents, and so forth, are still plagued with hemocompatibility issues which often result in the need for subsequent replacement and/or life-long anticoagulation therapy. Consequently, there is a significant interest in developing biomaterials that can address these issues. Polymeric-based materials have been proposed for use in many applications due to their ability to be finely tuned through manufacturing and surface modification to enhance hemocompatibility...
September 30, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28950325/management-of-tricuspid-valve-regurgitation-position-statement-of-the-european-society-of-cardiology-working-groups-of-cardiovascular-surgery-and-valvular-heart-disease
#15
Manuel J Antunes, José Rodríguez-Palomares, Bernard Prendergast, Michele De Bonis, Raphael Rosenhek, Nawwar Al-Attar, Fabio Barili, Filip Casselman, Thierry Folliguet, Bernard Iung, Patrizio Lancellotti, Claudio Muneretto, Jean-François Obadia, Luc Pierard, Piotr Suwalski, Pepe Zamorano
Tricuspid regurgitation (TR) is a very frequent manifestation of valvular heart disease. It may be due to the primary involvement of the valve or secondary to pulmonary hypertension or to the left-sided heart valve disease (most commonly rheumatic and involving the mitral valve). The pathophysiology of secondary TR is complex and is intrinsically connected to the anatomy and function of the right ventricle. A systematic multimodality approach to diagnosis and assessment (based not only on the severity of the TR but also on the assessment of annular size, RV function and degree of pulmonary hypertension) is, therefore, essential...
December 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28913586/evolving-indications-for-transcatheter-aortic-valve-interventions
#16
REVIEW
Anna Franzone, Thomas Pilgrim, Stefan Stortecky, Stephan Windecker
PURPOSE OF REVIEW: The purpose of this review was to summarize recent progress in the field of transcatheter aortic valve replacement (TAVR), discuss expansion of indications, and identify areas of future clinical applications. RECENT FINDINGS: Favorable clinical outcomes as well as continued refinement of transcatheter heart valve technology have prompted the continuous expansion of indications for TAVR. The results of randomized clinical trials comparing the safety and efficacy of TAVR relative to conventional surgical aortic valve replacement (SAVR) in lower- than high-risk patients have recently been published, and trials among lower-risk categories are ongoing...
September 14, 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28844512/meta-analysis-of-usefulness-of-anticoagulation-after-transcatheter-aortic-valve-implantation
#17
REVIEW
Kinjal Banerjee, Kanhaiya Poddar, Stephanie Mick, Jonathon White, Amar Krishnaswamy, Douglas Johnston, Leonardo Rodriguez, E Murat Tuzcu, Samir Kapadia
Since the advent of bioprosthetic valves, the implications of long-term anticoagulation after valve replacement are unclear. There are very little data on outcomes of long-term anticoagulation after transcatheter aortic valve implantation (TAVI). Our aim was to conduct a systematic review of literature regarding anticoagulation after TAVI. The existing literature on anticoagulation after bioprosthetic valve replacement was thoroughly reviewed, including the most recent American College of Cardiology/American Heart Association 2017 guidelines for management of valvular disease, which is based on sparse, nonrandomized retrospective data...
November 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28838604/a-scientific-analysis-of-the-100-citation-classics-of-valvular-heart-disease
#18
REVIEW
Muhammad Shariq Usman, Tariq Jamal Siddiqi, Muhammad Shahzeb Khan, Kaneez Fatima, Javed Butler, Warren J Manning, Faisal Khosa
Bibliometric analyses can help researchers and research funding agencies determine which areas of medicine need appropriate research attention. Citation classics of several specialties and subspecialties have been published; however, a literature search did not turn up any in the field of valvular heart disease (VHD). The main objective of this analysis was to overcome this paucity by identifying the top 100 cited articles in VHD and to assess their characteristics. We chose Scopus as our database, from where relevant articles were extracted after a thorough search by 2 independent researchers...
October 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28820030/epidemiology-of-cardiovascular-disease-in-the-united-states-implications-for-the-perfusion-profession-a-2017-update
#19
Joseph J Sistino, David C Fitzgerald
INTRODUCTION: By analyzing epidemiological trends in cardiovascular disease (CVD), key stakeholders can make informed decisions on the future of disease burden and treatment. Accordingly, the cardiovascular perfusion community would benefit from data that would help predict future professional resource utilization. METHODS: In 2003, the changes in the number of hospital discharges for CVD from 1990 to 2000 were published, based on data from the National Center for Health Statistics (NCHS)...
September 2017: Perfusion
https://www.readbyqxmd.com/read/28756075/-tavi-history-and-perspectives
#20
Anastasia Sokoloff, Hélène Eltchaninoff
Nearly 20 years have passed from the concept to clinical development of percutaneous aortic valve replacement, starting from an idea considered "stupid" of Professor Alain Cribier in Rouen. After a first phase of compassionate implantation, large randomized trials PARTNER and COREVALVE US have allowed TAVI to impose itself in the European and American recommendations in patients inoperable or considered with high surgical risk. Next European recommendations on the management of valvular heart diseases expected in 2017 should take into account the positive results observed in intermediate risk patients in the PARTNER 2 and SURTAVI studies, recently adopted in the US recommendations...
July 2017: La Presse Médicale
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