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Valve durability

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https://www.readbyqxmd.com/read/28203536/clinical-outcomes-of-robotic-mitral-valve-repair-a-single-center-experience-in-korea
#1
Ho Jin Kim, Joon Bum Kim, Sung-Ho Jung, Jae Won Lee
BACKGROUND: Since the inception of robotic mitral valve repair (MV) in 2007 at our institution, it has become an acceptable surgical option with proven efficacy and safety. The objective of this study is to analyze the early and long-term clinical outcomes of patients undergoing robotic MV repair. METHODS: A total of 310 patients (aged 48.4±13.7 years, 201 males) undergoing robotic MV repair using the da Vinci system (Intuitive Surgical, Inc., Sunnyvale, CA) between August 2007 and December 2015 in our institution were evaluated...
January 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28187474/new-mitral-annuloplasty-ring-enables-oversizing-of-transcatheter-heart-valve-and-prevents-central-or-paravalvular-leakage
#2
Georg Daniel Duerr, Jan-Malte Sinning, Armin Georg Welz, Fritz Mellert
Background Transcatheter valve-in-ring strategies have been developed to treat recurrent mitral regurgitation (MR) after failing surgical annuloplasty. However, suboptimal THV expansion with consecutive paravalvular leakage (PVL) is a procedure-immanent issue. Methods A rigid, saddle-shaped ring was cut at four locations. The segments were reconnected with pull-springs, rearranged to the original shape, and covered with a sewing cuff. The length of the annuloplasty ring construct, including extended pull-springs, was defined by the perimeter of an appropriate THV...
February 10, 2017: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/28164025/pulmonary-autograft-in-aortic-position-is-everything-known
#3
COMMENT
Francesco Nappi, Antonio Nenna, Cristiano Spadaccio, Massimo Chello
The Ross operation provides several advantages compared to other valve substitutes to manage aortic valve disease, such as growth potential, excellent hemodynamics, freedom from oral anticoagulation and hemolysis, and better durability. However, progressive dilatation of the pulmonary autografts after Ross operation reflects the inadequate remodeling of the native pulmonary root in the systemic circulation, which results in impaired adaptability to systemic pressure and risk of reoperation after the first decade...
January 2017: Translational pediatrics
https://www.readbyqxmd.com/read/28157718/in-vitro-comparative-assessment-of-decellularized-bovine-pericardial-patches-and-commercial-bioprosthetic-heart-valves
#4
Paola Aguiari, Laura Iop, Francesca Favaretto, Cátia Marisa Lourenco Fidalgo, Filippo Naso, Gabriella Milan, Vincenzo Vindigni, Michel Spina, Franco Bassetto, Andrea Bagno, Roberto Vettor, Gino Gerosa
Notwithstanding their wide exploitation, biological prosthetic heart valves are characterized by limited durability (10-15 years). The treatment of biological tissues with chemical crosslinking agents such as glutaraldehyde accounts for the enhanced risk of structural deterioration associated with the early failure of bioprosthetic valves. To overcome the shortcomings of the currently available solutions, adoption of decellularized biological tissues of animal origin has emerged as a promising approach. The present study aims to assess in vitro cardiovascular scaffolds composed of bovine pericardium decellularized with the novel TRITDOC (TRIton-X100 and TauroDeOxyCholic acid) procedure...
February 3, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28149886/anticoagulant-independent-mechanical-heart-valves-viable-now-or-still-a-distant-holy-grail
#5
Aurelio Chaux, Richard J Gray, Jonathan C Stupka, Michael R Emken, Lawrence N Scotten, Rolland Siegel
Valvular heart disease remains a large public health problem for all societies; it attracts the attention of public health organizations, researchers and governments. Valve substitution is an integral part of the treatment for this condition. At present, the choice of valve prosthesis is either tissue or mechanical. Tissue valves have become increasingly popular in spite of unresolved problems with durability, hemodynamics, cost and need for anticoagulation therapy. As a consequence, mechanical valve innovation has virtually ceased; the last successful mechanical design is 25 years old...
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28137962/valve-repair-a-durable-surgical-option-in-degenerative-mitral-regurgitation
#6
EDITORIAL
Bernard D Prendergast, Michele De Bonis
No abstract text is available yet for this article.
January 31, 2017: Circulation
https://www.readbyqxmd.com/read/28108064/stent-and-leaflet-stresses-in-a-26-mm-first-generation-balloon-expandable-transcatheter-aortic-valve
#7
Yue Xuan, Kapil Krishnan, Jian Ye, Danny Dvir, Julius M Guccione, Liang Ge, Elaine E Tseng
OBJECTIVE: Transcatheter aortic valve replacement is established therapy for high-risk and inoperable patients with severe aortic stenosis, but questions remain regarding long-term durability. Valve design influences durability. Increased leaflet stresses in surgical bioprostheses have been correlated with degeneration; however, transcatheter valve leaflet stresses are unknown. From 2007 to 2014, a majority of US patients received first-generation balloon-expandable transcatheter valves...
December 23, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28100977/preserving-a-well-functioning-33-year-old-starr-edwards-aortic-prosthesis-in-repeat-aortic-root-aneurysm-repair
#8
Abdallah K Alameddine, Victor K Alimov, John A Rousou, Fabrizio I Pluchino
We report the case of a 61-year-old obese male patient in whom we found a well-functioning 33-year-old Starr-Edwards aortic prosthesis during repeat aortic surgery. Rather than explant the prosthesis, we remodeled the aortic root, almost completely removing the aortic sinuses and leaving only a pillar of aortic tissue around the coronary ostia. The proximal end of a Hemashield tube-graft was then scalloped to accommodate the remaining aortic tissue. The patient's heart function was excellent after his weaning from cardiopulmonary bypass...
December 2016: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28092288/sutureless-aortic-valves-who-is-the-right-patient
#9
Amine Mazine, Christopher Bonneau, Dimos Karangelis, Bobby Yanagawa, Subodh Verma, Daniel Bonneau
PURPOSE OF REVIEW: Sutureless aortic valve replacement (AVR) has emerged as an alternative to traditional AVR for patients with aortic stenosis who present a higher surgical risk, such as the elderly, or those with small or highly calcified aortic roots. With transcatheter aortic valve implantation - the other major AVR alternative - being used in increasingly lower-risk patients, the place of sutureless valves in the AVR landscape needs to be defined. In this review, we discuss recent data and expert opinion as it pertains to the subject of sutureless AVR...
March 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28089953/transcatheter-treatment-of-severe-tricuspid-regurgitation-using-the-edge-to-edge-repair-technique
#10
Daniel Braun, Michael Nabauer, Mathias Orban, Martin Orban, Lisa Gross, Andrea Englmaier, Diana Rösler, Julinda Mehilli, Axel Bauer, Christian Hagl, Steffen Massberg, Jörg Hausleiter
AIMS: The aim of this study was to investigate the procedural feasibility and short-term durability of the transcatheter tricuspid valve edge-to-edge repair technique in highly symptomatic patients with severe tricuspid regurgitation (TR). METHODS AND RESULTS: Eighteen consecutive patients suffering from severe right-sided heart failure (NYHA Class III-IV), primarily due to moderate to severe tricuspid regurgitation, were included in the study. Applying a modified steering technique for the clip delivery system, six patients were treated for isolated severe TR, while 12 patients were treated for moderate to severe TR and concomitant severe mitral regurgitation...
February 3, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28067715/incidence-risk-factors-clinical-impact-and-management-of-bioprosthesis-structural-valve-degeneration
#11
Nancy Côté, Philippe Pibarot, Marie-Annick Clavel
PURPOSE OF REVIEW: Structural valve deterioration is the major cause of bioprosthesis failure and is increasing over time. We present an overview of incidence, mechanisms, predictors, clinical impact, and management of bioprosthetic valve structural degeneration. RECENT FINDINGS: Early degeneration caused by calcification and destruction of connective tissue of the prosthesis is controlled by multiple mechanisms, from mechanical stress to infiltration of lipids and inflammatory cells, and activation of the immune system...
March 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28066587/comparison-of-outcomes-of-tricuspid-annuloplasty-with-3d-rigid-versus-flexible-prosthetic-ring-for-functional-tricuspid-regurgitation-secondary-to-rheumatic-mitral-valve-disease
#12
Haiping Wang, Xiancheng Liu, Xin Wang, Zhenqian Lv, Xiaojun Liu, Ping Xu
BACKGROUND: Annuloplasty bands and rings are widely used for repairing functional tricuspid regurgitation (FTR). However, the question regarding which is the ideal annuloplasty device remains unclear. The aim of this study was to compare the efficacy and mid-term durability of tricuspid ring annuloplasty for FTR secondary to rheumatic mitral valve disease using flexible Cosgrove-Edwards band and the rigid Edwards MC3 ring (Edwards Lifesciences, LLC, Irvine, CA, USA). METHODS: We retrospectively collected the clinical data of those who underwent mitral valve replacement (MVR) in concomitant with tricuspid ring annuloplasty from 2009 to 2013...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28062680/mitral-valve-replacement-using-a-handmade-construct-in-an-infant
#13
Steven Bibevski, Alexandra Levy, Frank G Scholl
We recently reported the feasibility of a handmade left atrioventricular valve using decellularized extracellular matrix for 3 months in a failed repair of AV canal defect. We present the use of an extracellular matrix mitral valve for 9 months in an infant with an un-repairable congenitally malformed valve. The valve functioned perfectly without anticoagulation until the patient expired from non-cardiac complications of their fibrillin gene defect. This report adds further experience using valves made from extracellular matrix in the systemic ventricle both in terms of application and in terms of short-term durability of the construct...
January 6, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28054904/early-clinical-outcome-of-mitral-valve-replacement-using-a-newly-designed-stentless-mitral-valve-for-failure-of-initial-mitral-valve-repair
#14
Hidefumi Nishida, Hitoshi Kasegawa, Hajime Kin, Shuichiro Takanashi
Here we report the early outcome of mitral valve replacement using a newly designed stentless mitral valve for failure of initial mitral valve repair. Mitral valve plasty (MVP) for mitral regurgitation is currently a standard technique performed worldwide. However, whether mitral valve repair should be performed for patients with advanced leaflet damage or complicated pathology remains controversial. Mitral valve replacement might be feasible for patients who have undergone failed initial MVP; however, it is not an optimal treatment because of poor valve durability and the need for anticoagulative therapy...
21, 2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/28043449/stentless-vs-stented-aortic-valve-bioprostheses-in-the-small-aortic-root
#15
Laurens W Wollersheim, Wilson W Li, Abdullah Kaya, Berto J Bouma, Antoine H Driessen, Wim J van Boven, Jan van der Meulen, Bas A de Mol
In patients with a small aortic root undergoing aortic valve replacement (AVR), the Freedom SOLO bioprosthesis may be the ideal prosthesis because of its stentless design and supra-annular implantation. This study investigated if the stentless Freedom SOLO has an advantage when compared with a stented bioprosthesis in patients with a small aortic root. From April 2005-July 2014, 269 consecutive patients underwent AVR with either a Freedom SOLO (n = 76) or Mitroflow (n = 193) bioprosthesis size 19mm or 21mm, respectively...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28017715/midterm-sapien-transcatheter-valve%C3%A2-durability-ready-for-prime-time-or-waiting-to-fail
#16
EDITORIAL
Patricia A Pellikka, Jeremy Thaden
No abstract text is available yet for this article.
December 8, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28012074/results-of-mitral-valve-repair-with-an-adjustable-annuloplasty-ring-2%C3%A2-years-after-implantation
#17
Simon H Sündermann, Markus Czesla, Jörg Kempfert, Thomas Walther, Patrick Nataf, Ehud Raanani, Stephan Jacobs, Ottavio Alfieri, Francesco Maisano, Volkmar Falk
: We aimed to investigate the safety and medium-term durability of an adjustable mitral annuloplasty ring in patients undergoing surgery for mitral valve regurgitation. Forty-five patients requiring mitral valve repair were enrolled into this prospective, multicentre study between May 2012 and May 2013 in six hospitals in Europe and Israel. Study endpoints evaluated the performance and safety of the device assessed using inter-individual comparisons. Implantation was performed through a sternotomy in ten patients and mini-thoracotomy in 35 patients...
December 23, 2016: Heart and Vessels
https://www.readbyqxmd.com/read/28009947/root-replacement-for-graft-infection-using-an-all-biologic-xenopericardial-conduit
#18
Sabina P W Guenther, Angela Reichelt, Sven Peterss, Maximilian Luehr, Erik Bagaev, Christian Hagl, Maximilian A Pichlmaier, Nawid Khaladj
BACKGROUND: The management of graft infection following ascending aortic replacement (AAR) and/or aortic valve replacement (AVR) with destruction of the root remains a challenge. Besides technical issues, the choice of graft material is controversial. The study aim was to investigate the initial results of aortic root replacement (ARR) as redo-surgery for infection using the xenopericardial all-biologic conduit (BioIntegral) as an alternative to a homograft or prosthetic material. METHODS: Between February 2013 and January 2015, a total of 18 consecutive patients (16 males, two females; mean age 61 ± 14 years) were reoperated on for infection at a mean of 55 ± 61 months (range: 3 to 219 months) following previous AVR (n = 6), supracoronary aortic replacement (SAR, n = 2), AVR + SAR (n = 1), root replacement (n = 7), and root reconstruction (n = 2)...
July 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28008545/a-tri-leaflet-nitinol-mesh-scaffold-for-engineering-heart-valves
#19
S Hamed Alavi, Marc Soriano Baliarda, Noemi Bonessio, Lorenzo Valdevit, Arash Kheradvar
The epidemiology of valvular heart disease has significantly changed in the past few decades with aging as one of the main contributing factors. The available options for replacement of diseased valves are currently limited to mechanical and bioprosthetic valves, while the tissue engineered ones that are under study are currently far from clinical approval. The main problem with the tissue engineered heart valves is their progressive deterioration that leads to regurgitation and/or leaflet thickening a few months after implantation...
February 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28000112/aldehyde-reduction-in-a-novel-pericardial-tissue-reduces-calcification-using-rabbit-intramuscular-model
#20
Hao Shang, Steven M Claessens, Bin Tian, Gregory A Wright
Calcification is a major factor that limits the durability of bioprosthetic valve. A novel bovine pericardial tissue treated with aldehyde capping chemistry and glycerolization was evaluated for its resistance to calcification in comparison with porcine tissues treated with amino oleic acid and bovine pericardial tissue with ethanol rinsing in a rabbit intramuscular model. Tissue discs from the test and control tissues were implanted in rabbits for 60 days. The explanted discs were subject to X-ray imaging, calcium quantification and histology analysis...
January 2017: Journal of Materials Science. Materials in Medicine
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