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Bioprosthetic heart valves

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https://www.readbyqxmd.com/read/29304513/nonvitamin-k-antagonist-oral-anticoagulants-use-in-patients-with-atrial-fibrillation-and-bioprosthetic-heart-valves-prior-surgical-valve-repair-a-multicenter-clinical-practice-experience
#1
Vincenzo Russo, Emilio Attena, Carmine Mazzone, Francesca Esposito, Valentina Parisi, Ciro Bancone, Anna Rago, Gerardo Nigro, Raffaele Sangiuolo, Antonio D' Onofrio
This is an observational study to investigate the efficacy and safety of nonvitamin K antagonist oral anticoagulants (NOACs) in atrial fibrillation (AF) patients with bioprosthetic valves or prior surgical valve repair in clinical practice. A total of 122 patients (mean age: 74.1 ± 13.2; 54 females) with bioprosthetic heart valve or surgical valve repair and AF treated with NOACs were included in the analysis. The mean CHA2DS2-VASc (Congestive heart failure, Hypertension, Age >75 years, Diabetes mellitus, prior Stroke or transient ischemic attack, Vascular disease) and HAS-BLED (Hypertension, Abnormal renal and liver function, Stroke, Bleeding, Labile INR [international normalized ratio], Elderly, Drugs or alcohol) score values were 3...
January 5, 2018: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/29302952/letter-to-the-editor-thrombocytopenia-after-sutureless-aortic-valve-implantation-does-it-really-matter
#2
G Santarpino, F Vogt
Despite the limited clinical relevance of thrombocytopenia after bioprosthetic aortic valve replacement (AVR), the postoperative depletion of platelet count continues to attract the attention of many authors. The development of thrombocytopenia has been evaluated either in patients receiving a sutureless bioprosthesis (1,2) or in those undergoing transcatheter aortic valve implantation, where cardiopulmonary bypass bears little or no relation to this phenomenon (3). Recently, Sánchez et al. (1) have published their findings on this topic, but their limited experience with the devices used makes their study of doubtful interest...
July 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29302948/the-hancock%C3%A2-valved-conduit-for-right-ventricular-outflow-tract-reconstruction-in-sheep-for-assessing-new-devices
#3
John P Carney, Lindsey M Zhang, Jeffrey J Larson, Matthew T Lahti, Nicholas A Robinson, Agustin P Dalmasso, Richard W Bianco
BACKGROUND: Xenograft conduits have been used successfully to repair congenital heart defects, but are prone to failure over time. Hence, in order to improve patient outcomes, better xenografts are being developed. When evaluating a conduit's performance and safety it must first be compared against a clinically available control in a large animal model. The study aim was to evaluate a clinically available xenograft conduit used in right ventricular outflow tract (RVOT) reconstruction in a sheep model...
July 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29297188/primary-safety-and-effectiveness-feasibility-study-after-surgical-aortic-valve-replacement-with-a-new-generation-bioprosthesis-one-year-outcomes
#4
Krzysztof Bartus, Radosław Litwinowicz, Mariusz Kusmierczyk, Agata Bilewska, Maciej Bochenek, Maciej Stapor, Sebastian Wozniak, Jacek Rozanski, Jerzy Sadowski, Boguslaw Kapelak
BACKGROUND: Structural valve deterioration (SVD) is a major obstacle to lifetime durability for bioprosthetic heart valves. Bioprosthetic valve created with RESILIA™ tissue was designed to produce long-term resistance to SVD. AIM: The objective of this study was to evaluate the safety and performance of this new class of RESILIA™ tissue aortic bioprosthesis. METHODS: A nonrandomized, prospective, multi-center, single-arm, observational study was performed in 133 patients who underwent surgical aortic valve replacement between July 2011 and February 2013...
January 3, 2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29273635/prevalence-characteristics-and-outcomes-of-valvular-heart-disease-in-patients-with-atrial-fibrillation-insights-from-the-orbit-af-outcomes-registry-for-better-informed-treatment-for-atrial-fibrillation
#5
Kevin L Thomas, Larry R Jackson, Peter Shrader, Jack Ansell, Gregg C Fonarow, Bernard Gersh, Peter R Kowey, Kenneth W Mahaffey, Daniel E Singer, Laine Thomas, Jonathan P Piccini, Eric D Peterson
BACKGROUND: The presence of valvular heart disease (VHD) may affect the risk of stroke and mortality in patients with atrial fibrillation (AF). Community-based estimates of prevalence and outcomes of specific forms of VHD in patients with AF are lacking. METHODS AND RESULTS: We examined the prevalence of VHD, anticoagulation use, mortality, stroke/transient ischemic attack, and bleeding among a community cohort of patients with AF. Significant VHD was defined as follows: (1) moderate/severe mitral stenosis or mechanical valve; (2) bioprosthetic valve, surgical repair, or balloon valvuloplasty; and (3) moderate/severe aortic regurgitation or stenosis, mitral regurgitation, or tricuspid regurgitation...
December 22, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29212343/nonbacterial-thrombotic-endocarditis-involving-all-four-cardiac-valves
#6
Sachiko Kawada, Mitsuhito Kuriyama, Yasuhiro Kotani, Shou Tsushima, Atsushi Tanabe, Yukio Kioka
This report describes a case of nonbacterial thrombotic endocarditis caused by Waldenström macroglobulinemia, with diffuse endocardial lesions and involvement of all 4 cardiac valves. A 77-year-old man presented with heart failure due to severe regurgitation of all 4 cardiac valves; surgical repair using bioprosthetic valves was indicated. A pathological study revealed fibrin-triggered thrombus formation that confirmed the diagnosis of nonbacterial thrombotic endocarditis. In cases of nonbacterial thrombotic endocarditis, the underlying cause should be investigated...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/29198154/population-trends-in-mitral-valve-surgery-in-finland-between-1997-and-2014-the-finnish-cvd-register
#7
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/29195573/complications-after-self-expanding-transcatheter-or-surgical-aortic-valve-replacement
#8
RANDOMIZED CONTROLLED TRIAL
John V Conte, James Hermiller, Jon R Resar, G Michael Deeb, Thomas G Gleason, David H Adams, Jeffrey J Popma, Steven J Yakubov, Daniel Watson, Jia Guo, George L Zorn, Michael J Reardon
Procedural complications following transcatheter aortic valve replacement (TAVR) or surgical aortic valve replacement (SAVR) are usually reported as retrospective analyses. We report the first comparison of complications following SAVR or self-expanding TAVR from a prospectively randomized study of high-risk SAVR patients. Three hundred ninety-five TAVR and 402 SAVR patients were prospectively enrolled and randomized 1:1 to TAVR with a CoreValve bioprosthesis or a surgical bioprosthetic valve. The rates of major procedural and vascular complications occurring (periprocedurally (0-3 days) and early (4-30 days)) were compared for TAVR vs SAVR patients...
2017: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29161994/synthesis-characterization-and-application-of-biodegradable-polymer-grafted-novel-bioprosthetic-tissue
#9
Amrita Pal, Chandrashekhar Pathak, Brent Vernon
Animal tissue has an extended history of clinical use in applications like heart valve bioprosthesis devices, cardiovascular surgical applications etc. but often does not last longer after implantation in the body due to rapid unwanted degradation. The goal of this work is to develop novel composite biomaterials by grafting biological tissue with synthetic, biodegradable polymers. In the current research phase, porcine submucosa, ureter and bovine pericardial tissue are grafted with poly DL-lactide (PLA), poly glycolide (PGA) and poly DL-lactide glycolide (PLGA) copolymers...
November 22, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/29158054/early-outcomes-for-valve-in-valve-tavr-in-degenerative-freestyle-bioprostheses
#10
Stephane Leung Wai Sang, Tyler Beute, John Heiser, Duane Berkompas, Justin Fanning, William Merhi
OBJECTIVES: Transcatheter aortic valve replacement (TAVR) is used increasingly to treat bioprosthetic valve failure. A paucity of data exists regarding valve-in-valve (ViV) TAVR in degenerated Freestyle stentless bioprostheses (FSB). This study sought to evaluate the feasibility and short-term outcomes of ViV TAVR in previously placed FSB. METHODS: From October 2014 to September 2016, 22 patients underwent ViV TAVR with a self-expanding transcatheter valve for a failing FSB at a single institution...
November 17, 2017: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29129879/transcatheter-aortic-valve-implantation-for-degenerated-19-mm-aortic-bioprosthetic-valve
#11
Kizuku Yamashita, Tomoyuki Fujita, Satsuki Fukushima, Yusuke Shimahara, Yuta Kume, Yorihiko Matsumoto, Naonori Kawamoto, Tatsuro Hitsumoto, Nobuyasu Ito, Yasuhiro Hamatani, Atsushi Okada, Hiroyuki Takahama, Makoto Amaki, Takuya Hasegawa, Yasuo Sugano, Hideaki Kanzaki, Toshihisa Anzai, Satoshi Yasuda, Junjiro Kobayashi
BACKGROUND: The valve-in-valve procedure, in which a transcatheter heart valve (THV) is implanted over a prosthetic valve, has been shown to be safe and therapeutically effective, depending on the size of the replacement valve.Methods and Results:We report 3 cases of successful valve-in-valve procedure to replace a degenerated 19-mm stented prosthetic aortic valve. Balloon-expanding THVs were implanted: 20-mm in the 1st case and 23-mm in the next 2. Aortic stenosis was almost completely resolved in all patients, who recovered promptly and without cardiac adverse events...
November 11, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29119728/a-framework-for-designing-patient-specific-bioprosthetic-heart-valves-using-immersogeometric-fluid-structure-interaction-analysis
#12
Fei Xu, Simone Morganti, Rana Zakerzadeh, David Kamensky, Ferdinando Auricchio, Alessandro Reali, Thomas J R Hughes, Michael S Sacks, Ming-Chen Hsu
Numerous studies have suggested that medical image derived computational mechanics models could be developed to reduce mortality and morbidity due to cardiovascular diseases by allowing for patient-specific surgical planning and customized medical device design. In this work, we present a novel framework for designing prosthetic heart valves using a parametric design platform and immersogeometric fluid-structure interaction (FSI) analysis. We parameterize the leaflet geometry using several key design parameters...
November 9, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29118948/transcatheter-heart-valve-in-valve-implantation-with-edwards-sapien-bioprosthetic-valve-for-different-degenerated-bioprosthetic-valve-positions-first-iranian-viv-report-with-mid-term-follow-up
#13
Ali Mohammad Haji Zeinali, Kyomars Abbasi, Mohammad Saheb Jam, Shahrooz Yazdani, Seyedeh Hamideh Mortazavi
Introduction: After early successful experience with transcatheter aortic valve replacement (TAVR), concept of transcatheter implantation of a new valve within a failing bioprosthetic valve emerged. Valve-in-valve (ViV) implantation seems to be a simpler option for high risk surgical patients. Methods: We performed five ViV procedures in different valve positions. We included patients with failing bioprosthetic valves with high surgical risk due to concomitant comorbidities. We performed 2 transapical ViV procedures for failing mitral bioprosthetic valves, 1 transfemoral procedure for failing pulmonary valve and 2 transfemoral ViV implantation for failing tricuspid bioprosthetic valves...
2017: Journal of Cardiovascular and Thoracic Research
https://www.readbyqxmd.com/read/29100642/medium-term-outcomes-after-implantation-of-expanded-polytetrafluoroethylene-valved-conduit
#14
Yoshio Ootaki, Allison S Welch, Michael J Walsh, Michael D Quartermain, Derek A Williams, Ross M Ungerleider
BACKGROUND: Pulmonary valve replacement is becoming the most frequent congenital heart surgery performed on adolescents and young adults. Numerous surgical options are available, including autologous pericardium, mechanical valves, allografts, and bioprosthetic valves. Each option has limitations with durability and freedom from reintervention for stenosis or insufficiency, particularly in the pediatric population. The purpose of this study was to analyze our uniquely designed, expanded polytetrafluoroethylene (ePTFE) valved conduit (VC) for right ventricular outflow tract reconstruction...
November 1, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29096125/biaxial-mechanical-behavior-of-bovine-saphenous-venous-valve-leaflets
#15
Jiaqi Lu, Hsiao-Ying Shadow Huang
Chronic venous disease is caused by chronic venous insufficiency (CVI), which results in significant symptoms such as venous ulcers, ankle eczema, leg swelling, etc. Venous valve incompetence is a major cause of CVI. When the valves of veins in the leg become incompetent (i.e., do not close properly), blood is able to flow backwards (i.e., reflux), which results in blood pooling in the lower extremities, distal venous hypertension, and CVI. Current clinical therapies, such as surgical venous valve reconstruction and bioprosthetic venous valve replacement, are highly invasive and only moderately successful...
October 24, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29062752/technical-pitfalls-and-tips-for-the-valve-in-valve-procedure
#16
REVIEW
Vinayak Bapat
Transcatheter aortic valve implantation (TAVI) has emerged as a viable treatment modality for patients with severe aortic valve stenosis and multiple co-morbidities. More recent indications include the use of transcatheter heart valves (THV) to treat degenerated bioprosthetic surgical heart valves (SHV), which are failing due to stenosis or regurgitation. Valve-in-valve (VIV) procedures in the aortic position have been performed with a variety of THV devices, although the balloon-expandable SAPIEN valve platform (Edwards Lifesciences Ltd, Irvine, CA, USA) and self-expandable CoreValve platform (Medtronic Inc...
September 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29057501/different-approaches-to-heart-valve-decellularization-a-comprehensive-overview-of-the-past-30%C3%A2-years
#17
REVIEW
Filippo Naso, Alessandro Gandaglia
Xenogeneic decellularized heart valve scaffolds have the potential to overcome the limitations of existing bioprosthetic heart valves that have limited duration due to calcification and tissue degeneration phenomena. This article presents a review of 30 years of decellularization approaches adopted in cardiovascular tissue engineering, with a focus on the use, either individually or in combination, of different detergents. The safety and efficacy of cell-removal procedures are specifically reported and discussed, as well as the structure and biomechanics of the treated extracellular matrix (ECM)...
October 22, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/29053434/alpha-gal-inactivated-heart-valve-bioprostheses-exhibit-an-anti-calcification-propensity-similar-to-knockout-tissues
#18
Filippo Naso, Ugo Stefanelli, Edward Buratto, Giovanna Lazzari, Andrea Perota, Cesare Galli, Alessandro Gandaglia
BACKGROUND: Glutaraldehyde (GLA) has been used to crosslink bioprosthetic heart valve (BHVs) tissues to enhance their stability, besides ensuring a satisfactory degree of immunological tolerance. Unfortunately, GLA fixation does not guarantee a complete tissue biocompatibility of BHVs in currently used devices. The interaction between preformed human anti-alpha-Gal antibody and alpha-Gal antigens promotes the calcification of GLA-treated alpha-Gal-positive tissue. Recently, an alarming correlation between the presence of the alpha-Gal epitope and a premature BHVs degeneracy was reported...
October 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29031049/heart-valve-scaffold-fabrication-bioinspired-control-of-macro-scale-morphology-mechanics-and-micro-structure
#19
Antonio D'Amore, Samuel K Luketich, Giuseppe M Raffa, Salim Olia, Giorgio Menallo, Antonino Mazzola, Flavio D'Accardi, Tamir Grunberg, Xinzhu Gu, Michele Pilato, Marina V Kameneva, Vinay Badhwar, William R Wagner
Valvular heart disease is currently treated with mechanical valves, which benefit from longevity, but are burdened by chronic anticoagulation therapy, or with bioprosthetic valves, which have reduced thromboembolic risk, but limited durability. Tissue engineered heart valves have been proposed to resolve these issues by implanting a scaffold that is replaced by endogenous growth, leaving autologous, functional leaflets that would putatively eliminate the need for anticoagulation and avoid calcification. Despite the diversity in fabrication strategies and encouraging results in large animal models, control over engineered valve structure-function remains at best partial...
October 6, 2017: Biomaterials
https://www.readbyqxmd.com/read/29029949/mitral-valve-replacement-using-carpentier-edwards-pericardial-bioprosthesis-in-patients-with-rheumatic-heart-disease-aged-below-40-years-17-year-results
#20
Ujjwal Kumar Chowdhury, Adil Rizvi, Rajeev Narang, Sandeep Seth, Mani Kalaivani, Suruchi Hasija, Lakshmi Kumari
BACKGROUND: This study was designed to evaluate patients aged less than 40 years implanted with tissue heart valves with respect to survival, thromboembolism, structural degeneration and quality of life. METHODS: Between January, 2000 and December, 2016, 132 patients (51 males) with rheumatic heart disease underwent mitral valve replacement using Carpentier-Edwards, perimount, pericardial bioprostheses. The patients' ages ranged between 12 and 39 years (mean±SD 30...
August 1, 2017: Heart, Lung & Circulation
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