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Valve durability

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https://www.readbyqxmd.com/read/29351595/propensity-matched-comparison-between-minimally-invasive-and-conventional-sternotomy-in-aortic-valve-resuspension
#1
Nadejda Monsefi, Petar Risteski, Aleksandra Miskovic, Andreas Zierer, Anton Moritz
OBJECTIVES: The aim of the study was to compare the results of David procedure through conventional or minimally invasive approach. METHODS: A propensity-matched comparison in patients undergoing a minimally invasive (partial upper sternotomy, n = 103) or complete sternotomy (n = 103) David procedure from 1991 to 2016 was performed. Patients were 57 ± 14 years old on average in both groups. The David technique was modified by generating a neosinus (P < 0...
January 16, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29340624/early-and-long-term-outcomes-of-mitral-valve-repair-for-barlow-s-disease-a-single-centre-16-year-experience
#2
Anton Tomšic, Yasmine L Hiemstra, Stephanie L van der Pas, Hein Putter, Michel I M Versteegh, Thomas J van Brakel, Nina Ajmone Marsan, Robert J M Klautz, Meindert Palmen
OBJECTIVES: Following mitral valve repair for Barlow's disease, recurrent mitral regurgitation (MR) is believed to occur frequently and is mainly attributed to disease progression. METHODS: Between January 2000 and December 2015, 180 patients (40% women, mean age 58.7 ± 13.5 years) with Barlow's disease underwent mitral valve repair. To provide a longitudinal assessment of mitral valve repair durability, a multistate model for interval-censored observations (4 states: 1, Grade 0/1+ MR; 2, Grade 2+ MR; 3, Grade 3+/4+ MR; 4, reintervention/death) was developed...
January 10, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29332374/transcatheter-aortic-valve-replacement-in-bicuspid-aortic-valve-stenosis-where-do-we-stand
#3
Sung-Han Yoon, Rahul Sharma, Tarun Chakravarty, Masaki Miyasaka, Tomoki Ochiai, Takahiro Nomura, Norman Gellada, Shadi Nemanpour, Mamoo Nakamura, Wen Chen, Raj Makkar
Bicuspid aortic valve is the most common congenital cardiac defect in adults, and symptom typically develops in adulthood. In the majority of cases, bicuspid aortic valve disease progress with ages and surgical aortic valve replacement is performed with excellent operative outcomes. However, with the relatively slow progression of disease, surgical aortic valve replacement is required in elderly patients but the surgical risk often deemed extremely high due to old age and multiple comorbidities. Transcatheter aortic valve replacement (TAVR) has evolved from a novel technology to an established therapy for intermediate- and high-risk patients with symptomatic severe aortic valve stenosis (AS)...
January 11, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29329115/developing-a-mitral-valve-center-of-excellence
#4
Ahmed El-Eshmawi, Javier G Castillo, Gilbert H L Tang, David H Adams
PURPOSE OF REVIEW: Despite the proven superiority of mitral repair over replacement for degenerative mitral disease, mitral valve replacement remains common. Guidelines now recommend referral of patients, particularly those whom are asymptomatic, to valve centers of excellence, although criteria that define such centers remain to be established. The purpose of this review is to define the structure of a mitral center of excellence and to review current clinical outcomes which are possible in such a center...
January 10, 2018: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/29327563/hemodynamic-outcomes-of-the-ross-procedure-versus-other-aortic-valve-replacement-a-systematic-review-and-meta-analysis
#5
Kevin J Um, Graham R McCLURE, Emilie P Belley-Cote, Saurabh Gupta, Ismail Bouhout, Hugo Lortie, Hatim Alraddadi, Ali Alsagheir, Matthias Bossard, William F McINTYRE, Alexandra Lengyel, John W Eikelboom, Maral Ouzounian, Michael W Chu, Dominic Parry, Ismail El-Hamamsy, Richard P Whitlock
INTRODUCTION: Life expectancy in young adults undergoing mechanical or bioprosthetic aortic valve replacement (AVR) may be reduced by up to 20 years compared to age matched controls. The Ross procedure is a durable, anticoagulation-sparing alternative. We performed a systematic review and meta-analysis to compare the valve hemodynamics of the Ross procedure versus other AVR. EVIDENCE ACQUISITION: We searched Cochrane CENTRAL, MEDLINE and EMBASE from inception to February 2017 for randomized controlled trials (RCTs) and observational studies (n≥10 Ross)...
January 9, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29327146/mid-term-outcome-of-100-consecutive-ross-procedures-excellent-survival-but-yet-to-be-a-cure
#6
Corina Zimmermann, Christine Attenhofer Jost, René Prêtre, Christoph Mueller, Matthias Greutmann, Burkhardt Seifert, Emanuela Valsangiacomo Büchel, Oliver Kretschmar, Hitendu Hasmukhlal Dave, Roland Weber
The Ross procedure offers excellent short-term outcome but the long-term durability is under debate. Reinterventions and follow-up of 100 consecutive patients undergoing Ross Procedure at our centre (1993-2011) were analysed. Follow-up was available for 96 patients (97%) with a median duration of 5.3 (0.1-17.1) years. Median age of the patient cohort was 15.2 (0.04-58.4) years with 76 males. 93% had underlying congenital aortic stenosis. Root replacement technique was applied in all. The most common valved conduits used for reconstruction of the right ventricular outflow tract were homografts (66 patients) and bovine jugular vein (ContegraR) graft (31 patients)...
January 12, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29309559/causes-of-repair-failure-for-degenerative-mitral-valve-disease-and-reoperation-outcomes
#7
Hidefumi Nishida, Toshihiro Fukui, Hitoshi Kasegawa, Hajime Kin, Masataka Yamazaki, Shuichiro Takanashi
OBJECTIVES: This study aimed to evaluate the causes of initial mitral valve (MV) repair failure, the details of reoperation and the long-term outcomes of mitral valve re-repair (Re-MVP). METHODS: We retrospectively reviewed 86 patients who underwent reoperation after MV repair for MR due to degenerative disease from October 1991 to December 2015. First, we analysed the initial MV repair data, causes of MV repair failure, reoperation data and long-term outcomes including survival...
January 3, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29307455/decellularized-versus-standard-pulmonary-allografts-in-the-ross-procedure-propensity-matched-analysis
#8
Francisco D A da Costa, Jonathan R G Etnel, Efstratios I Charitos, Hans-Hinrich Sievers, Ulrich Stierle, Daniele Fornazari, Johanna J M Takkenberg, Ad J J C Bogers, M Mostafa Mokhles
BACKGROUND: It is hypothesized that decellularization of allografts used for right ventricular outflow tract reconstruction may result in decreased valve deterioration. This study compared the durability of fresh decellularized pulmonary allografts with standard cryopreserved pulmonary allografts in patients undergoing the Ross procedure. METHODS: The Ross procedure was performed in 144 patients with decellularized allografts (DA) from 2005 to 2014 and in 619 with standard cryopreserved allografts (SCA) from 1990 to 2014...
January 4, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29305147/repair-of-a-quadricuspid-autograft
#9
Irem Karliova, Andreas Hagendorff, Ahmad Shalabi, Ulrich Schneider, Hans-Joachim Schäfers
Aortic valve replacement using a pulmonary autograft is an accepted option in children and young patients. The use of a pulmonary valve with congenital anomaly as autograft is controversial. We describe a case in which a quadricuspid pulmonary valve was used as autograft in childhood. The patient presented with severe regurgitation 13 years later. Repair was performed with stabilization of the root and cusp prolapse correction, leading to normalized valve function. Despite concerns over the long term durability of an anomalous pulmonary valve as autograft good mid- to long-term results can be achieved...
January 2, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29302948/the-hancock%C3%A2-valved-conduit-for-right-ventricular-outflow-tract-reconstruction-in-sheep-for-assessing-new-devices
#10
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/29302937/stress-analysis-of-transcatheter-aortic-valve-leaflets-under-dynamic-loading-effect-of-reduced-tissue-thickness
#11
Mostafa Abbasi, Ali N Azadani
BACKGROUND: In order to accommodate transcatheter valves to miniaturized catheters, the leaflet thickness must be reduced to a value which is typically less than that of surgical bioprostheses. The study aim was to use finite-element simulations to determine the impact of the thickness reduction on stress and strain distribution. METHODS: A 23 mm transcatheter aortic valve (TAV) was modelled based on the Edwards SAPIEN XT (Edwards Lifesciences, Irvine, CA, USA)...
July 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29300071/mitral-valve-annuloplasty
#12
Benedetto Del Forno, Alessandro Castiglioni, Alessandra Sala, Alberto Geretto, Andrea Giacomini, Paolo Denti, Michele De Bonis, Ottavio Alfieri
Mitral valve prosthetic ring annuloplasty represents a key milestone in the history of mitral valve repair, delivering restoration of annular shape and size. Increased leaflet coaptation, together with significant reduction in stress on sutures, has ensured predictability and immediate stability for valve repair, both of which were lacking with previous techniques. Long-term durability of repair seems to be positively affected by placement of an annuloplasty ring, and by following the well-established, standardized approach described in our tutorial, this procedure can be performed with a very low surgical risk...
October 6, 2017: Multimedia Manual of Cardiothoracic Surgery: MMCTS
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
#13
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/29289363/long-term-outcomes-of-the-mosaic-bioprosthesis
#14
Friedrich-Christian Rieß, Guy Fradet, Andrea Lavoie, Malcolm Legget
BACKGROUND: The Mosaic bioprosthesis is a third-generation stented porcine bioprosthesis. This study was performed to evaluate long-term survival and durability associated with this device. METHODS: A total of 1,029 patients (797 aortic valve replacements, 232 mitral valve replacements) previously enrolled at 6 centers as part of the original regulatory study were included. We evaluated freedom from death, valve-related reoperation, and explant due to structural valve deterioration (SVD), and compared these outcomes by age (<60 and ≥60 years) at the time of implant...
December 27, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29286184/in-vitro-biofilm-growth-on-modern-voice-prostheses
#15
Matthias Leonhard, Beata Zatorska, Yulong Tan, Doris Moser, Berit Schneider-Stickler
BACKGROUND: Biofilm formation on voice prostheses in laryngectomized patients usually limits the lifetime of the device. The purpose of this study was to compare the biofilm resistance of different valve flaps of modern voice prostheses in an in vitro simulation of an oropharyngeal biofilm. METHODS: Growth of biofilm deposits on valve flaps (n = 12) removed from Provox 2, Provox Vega, Provox ActiValve, Blom Singer Advantage, and Phonax voice prostheses was evaluated and compared to medical-grade silicone (n = 12) in an in vitro biofilm model (22 days) after incubation with a multispecies bacterial-fungal biofilm composition...
December 29, 2017: Head & Neck
https://www.readbyqxmd.com/read/29281606/expanding-indications-for-tavr-the-preferred-procedure-in-intermediate-risk-patients
#16
REVIEW
David L Brown
Transcatheter aortic valve replacement (TAVR) has steadily replaced surgical aortic valve replacement (SAVR) in symptomatic patients with severe aortic stenosis, primarily those at high risk for surgical complications. As TAVR use increases, spurred by technological advances in valve design and patient preferences for the less-invasive procedure, studies have provided data supporting the efficacy and safety of TAVR. Recently, TAVR has expanded to intermediate-risk patients, increasing the potential patient population...
December 2017: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/29275952/late-onset-of-atrial-fibrillation-in-patients-undergoing-mitral-valve-repair-for-type-ii-dysfunction
#17
Naonori Kawamoto, Tomoyuki Fujita, Satsuki Fukushima, Yusuke Shimahara, Yuta Kume, Yorihiko Matsumoto, Kizuku Yamashita, Junjiro Kobayashi
BACKGROUND: There are few reports regarding factors related to late-onset of atrial fibrillation (Af) after mitral valve repair, which can compromise long-term outcome. We analyzed the risk factors for late Af after mitral valve repair. METHODS AND RESULTS: Between 2001 and 2015, 318 patients (214 males; median, 57.7 years) underwent mitral valve repair for degenerative mitral insufficiency (MI) without concomitant aortic valve disease in our institute. Patients with a history of paroxysmal or chronic Af preoperatively were excluded...
December 21, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29273323/durability-of-aortic-valve-cusp-repair-with-and-without-annular-support
#18
Ahmad Zeeshan, Jay J Idrees, Douglas R Johnston, Jeevanantham Rajeswaran, Eric E Roselli, Edward G Soltesz, A Marc Gillinov, Brian Griffin, Richard Grimm, Donald F Hammer, Gösta B Pettersson, Eugene H Blackstone, Joseph F Sabik, Lars G Svensson
BACKGROUND: To determine the value of aortic valve repair rather than replacement for valve dysfunction, we assessed late outcomes of various repair techniques in the contemporary era. METHODS: From January 2001 to January 2011, aortic valve repair was planned in 1,124 patients. Techniques involved commissural figure-of-8 suspension sutures (n = 63 [6.2%]), cusp repair with commissuroplasty (n = 481 [48%]), debridement (n = 174 [17%]), free-margin plication (n = 271 [27%]) or resection (n = 75) or both, or annulus repair with resuspension (n = 230 [23%]), root reimplantation (n = 252 [25%]), or remodeling (n = 35 [3...
December 11, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29251657/transcatheter-aortic-valve-replacement-optimizing-outcomes-for-healthy-recovery
#19
Kashish Goel, David R Holmes
Transcatheter aortic valve replacement (TAVR) has been approved in the United States for intermediate and high-risk patients with severe symptomatic aortic stenosis. More than 80 000 TAVR procedures have been performed in the United States and the number is growing every year. Two valve designs are approved in the United States including the balloon expandable Edwards Sapien prosthesis and self-expanding CoreValve prosthesis. The PARTNER trial of the Sapien valve, involving patients who were considered inoperable, reported a 19% absolute risk reduction in mortality compared with medical therapy, with a number needed to treat of 5...
December 14, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/29248281/repair-of-a-quadricuspid-truncal-valve-by-tricuspidization-and-reconstruction-of-right-ventricular-outflow-tract-with-the-excised-truncal-cusp
#20
Ling-Yi Wei, Yih-Sharng Chen, Ing-Sh Chiu, Shu-Chien Huang
OBJECTIVE: Quadricuspid truncal valves are susceptible to regurgitation, and tricuspid configuration is considered more durable after repairing the truncal valve. We report a new method by excising the excessive truncal cuspid to reconstruct a new competent aortic valve. METHODS: Bilateral pulmonary banding failed to stabilize a 4-month-old baby with type I truncus arteriosus and quadricuspid truncal valve with severe regurgitation, so surgery was performed. The aorta was transected, and the pulmonary arteries was separated from the aorta...
November 16, 2017: Journal of Thoracic and Cardiovascular Surgery
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