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Valve durability

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https://www.readbyqxmd.com/read/28641394/reoperative-analysis-after-mitral-valve-repair-with-glutaraldehyde-treated-autologous-pericardium
#1
Naoto Fukunaga, Ryuzo Sakata, Tadaaki Koyama
OBJECTIVES: We reviewed reoperations following mitral valve repair (MVR) that used glutaraldehyde-treated autologous pericardium for mitral regurgitation (MR) to analyse the durability and risk factors for reoperation. METHODS: We retrospectively analysed 144 patients (mean age 57.9 years) who underwent MVR using glutaraldehyde-treated pericardium from March 1992 to December 2011. A total of 19 reoperations were necessary during the follow-up period (mean 6.9 years)...
June 21, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28633375/final-5-year-clinical-and-echocardiographic-results-for-treatment-of-severe-aortic-stenosis-with-a-self-expanding-bioprosthesis-from-the-advance-study
#2
Ulrich Gerckens, Corrado Tamburino, Sabine Bleiziffer, Johan Bosmans, Peter Wenaweser, Stephen Brecker, Jia Guo, Axel Linke
Aims: The ADVANCE study was designed to evaluate the safety and effectiveness of transcatheter aortic valve implantation (TAVI) with a self-expanding bioprosthesis in real-world patients with symptomatic, severe aortic stenosis at high surgical risk for valve replacement. Methods and results: Study participants were enrolled from 44 experienced centres in 12 countries. Patient eligibility, treatment approach, and choice of anaesthesia were determined by the local Heart Team...
June 13, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28623503/investigating-the-suitability-of-carbon-nanotube-reinforced-polymer-in-transcatheter-valve-applications
#3
Monica M Rozeik, David J Wheatley, Terence Gourlay
The current delivery size of transcatheter aortic valves, limited by the thickness of their pericardial leaflets, correlates with a high prevalence of major vascular complications. Polyurethane valves can be developed to a fraction of the thickness of pericardial valves through the addition of carbon nanotubes to reinforce their leaflets. This study investigates the suitability of a novel carbon nanotube reinforced leaflet to reduce the delivery profile of transcatheter aortic valves. Carbon nanotube polyurethane composites were developed with thicknesses of 50 μm and their mechanical properties were determined in relation to various environmental effects...
June 16, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28623096/how-long-will-my-repair-last-doctor-additional-data-on-the-durability-of-mitral-valve-repair
#4
EDITORIAL
Stephanie Mick, Kenneth McCurry, Jose Navia, Marc Gillinov
No abstract text is available yet for this article.
May 18, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28616345/wrapping-of-the-ascending-aorta-revisited-is-there-any-role-left-for-conservative-treatment-of-ascending-aortic-aneurysm
#5
REVIEW
José María González-Santos, María Elena Arnáiz-García
Dilatation of the ascending aorta (AA) is a common finding in patients with aortic valve disease. The clinical practice guidelines recommend replacing the AA whenever the diameter exceeds 45 mm. However, no consensus has been reached regarding the approach when the aorta is only moderately dilated. Although the risk in aorta replacement is generally low, it may be higher when associated with other complex surgical procedures or it is carried out in elderly patients or patients with significant comorbidity. This would justify the use of alternative surgical techniques, which reduce surgical risk and guarantee a durable correction of the aortic pathology...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28616273/mid-to-long-term-outcomes-of-bovine-jugular-vein-conduit-implantation-in-chinese-children
#6
Hui-Feng Zhang, Gang Chen, Ming Ye, Xian-Gang Yan, Qi-Lin Tao, Bing Jia
BACKGROUND: Bovine jugular vein (BJV) conduits are widely applied for surgical reconstruction of the right ventricular outflow tract (RVOT). However, relevant studies of valve failure rates and the related risk factors are limited in China. The aim of this study was to assess the BJV prognosis after medium- to long-term follow-up. METHODS: Fifty-three hospital patients implanted with BJV conduits from January 2002 to December 2013 were recruited. Patient information and follow-up prognosis were reviewed retrospectively...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28610762/early-trifecta-valve-failure-report-of-a-cluster-of-cases-from-a-tertiary-care-referral-center
#7
Ankur Kalra, Hasan Rehman, Mahesh Ramchandani, Colin M Barker, Gerald M Lawrie, Ross M Reul, Michael J Reardon, Neal S Kleiman
BACKGROUND: The Trifecta valve (St Jude Medical, Inc, St Paul, Minn) was approved for commercial use by the US Food and Drug Administration in 2011. Several isolated cases have been reported since then, describing early structural valve deterioration. We report a case series of 8 Trifecta valve failures, describing patients' clinical substrate and management, and the pathologic characteristics of the explanted valves. METHODS: Trifecta valve failure occurred in 7 patients (8 valves) receiving 19-mm (n = 2), 21-mm (n = 3), 23-mm (n = 1), and 25-mm (n = 2) valves...
May 22, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28583682/outcome-of-stent-graft-implantation-for-treatment-of-access-site-bleeding-after-transfemoral-transcatheter-aortic-valve-replacement
#8
Adi Segal, Moshe Y Flugelman, Nader Khader, Ronen Rubinshtein, Idit Lavi, Ron Karmeli, Ayman Jubran, Avinoam Shiran, Ronen Jaffe
Vascular complications are common after transcatheter aortic valve replacement (TAVR) and are associated with increased morbidity and mortality. Stent graft implantation enables percutaneous treatment of access site bleeding; however, the efficacy and durability and of this approach are unknown. We studied the immediate outcome of stent graft implantation for control of access site bleeding and the need for repeat vascular interventions after stenting, in a cohort of consecutive patients with severe symptomatic aortic stenosis who underwent transfemoral TAVR...
May 11, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28570342/the-perceval-sutureless-aortic-valve-review-of-outcomes-complications-and-future-direction
#9
Ramsey Powell, Marc P Pelletier, Michael W A Chu, Denis Bouchard, Kevin N Melvin, Corey Adams
Surgical aortic valve replacement with a stented prosthesis has been the standard of care procedure for aortic stenosis. The Perceval (LivaNova, London, United Kingdom) is a sutureless aortic valve bioprosthesis currently implanted in more than 20,000 patients. The purpose of this article was to review the literature available after 9 years of clinical experience of the Perceval aortic valve. PubMED, Embase, and the Cochrane Library databases were searched. A meta-analysis of summary statistics from individual studies was conducted...
May 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28570238/transcatheter-aortic-valve-replacement-for-perceval-sutureless-aortic-valve-failure
#10
Ankur Kalra, Manuel Reyes, Eric Y Yang, Stephen H Little, Faisal Nabi, Colin M Barker, Mahesh Ramchandani, Ross M Reul, Michael J Reardon, Neal S Kleiman
As experience with Perceval aortic prosthesis and valve-in-valve TAVR grows, it will be crucial to meticulously document short- and long-term follow-up for establishment of real-world safety and durability of these new technologies.
June 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28569053/pathology-of-balloon-expandable-transcatheter-aortic-valves
#11
Kazuyuki Yahagi, Elena Ladich, Robert Kutys, Hiroyoshi Mori, Lars G Svensson, Michael J Mack, Howard C Herrmann, Craig R Smith, Martin B Leon, Renu Virmani, Aloke V Finn
BACKGROUND: The Placement of AoRtic TraNscathetER Valves trials (PARTNER) showed favorable safety and efficacy versus medical or surgical therapy in inoperable, high, and intermediate surgical risk patients with severe aortic stenosis. However, the biological responses to transcatheter aortic valves have not been well characterized. OBJECTIVES: The aim of this study was to perform pathologic assessment of Edwards SAPIEN transcatheter aortic valves removed either at autopsy or surgically during the PARTNER I and II clinical trials...
June 1, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28567091/effect-of-rosuvastatin-on-bovine-pericardial-aortic-tissue-valve-calcification-in-a-rat-subdermal-implantation-model
#12
Seung Hyun Lee, Dae-Hyun Kim, Young-Nam Youn, Sak Lee, Hyun Chel Joo, Byung Chul Chang, Kyung-Jong Yoo
BACKGROUND AND OBJECTIVES: There are pathophysiologic similarities between calcification and atherosclerosis because both are the product of an active inflammatory process. The aim of this study was to examine the effects of statin treatment on calcification in bovine pericardial tissue valves. MATERIALS AND METHODS: Forty Sprague-Dawley rats were randomly divided into 4 groups according to hypercholesterolemia induction and statin intake (Group 1, n=10: normal diet without statin treatment, Group 2, n=10: normal diet with statin treatment, Group 3, n=10: high fat diet without statin treatment, Group 4, n=10: high fat diet with statin treatment)...
May 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28566474/mitral-valve-repair-for-degenerative-mitral-valve-disease-surgical-approach-patient-selection-and-long-term-outcomes
#13
REVIEW
Gonçalo F Coutinho, Manuel J Antunes
Mitral valve repair (MVRepair) has become the procedure of choice to correct severe degenerative mitral regurgitation (MR), due to its documented superiority to valve replacement regarding long-term survival, freedom from valve-related adverse events and preservation of left ventricular (LV) function. The refinement of MVRepair techniques has rendered almost all valves (more than 95%) amenable to repair with a 15-year freedom from reoperation of 90%. The concept of 'centres of excellence for MVRepair' has emerged, encouraging referring doctors to select the most experienced institutions or individual surgeons to deal with the most complex cases, based on repair volume, appropriate peri-procedural imaging and data regarding expected outcomes (repair, mortality and durability of repair)...
May 31, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28548475/patterns-of-use-and-durability-for-the-mitroflow-aortic-valve-a-systematic-review-of-the-literature
#14
Theodor Fischlein, Steffen Pfeiffer, Vincenzo Bagnardi, Giuseppe Santarpino
INTRODUCTION: To evaluate durability of Mitroflow and patterns of use compared with other aortic valves we performed a systematic review of the literature. EVIDENCE ACQUISITION: A total of 52 papers that included 33,630 patients met eligibility requirements that allowed summary statistical information to be determined regarding structural valve degeneration risk. EVIDENCE SYNTHESIS: Mitroflow has been disporportionately implanted in patients to be at higher risk for structural valve degeneration...
May 26, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28544836/aortic-valve-replacement-with-the-labcor-tlpb-supra%C3%A2-porcine-bioprosthesis-intermediate-clinical-and-echocardiographic-outcomes
#15
Markus Schlömicher, Zulfugar Taghiyev, Yazan Al-Jabery, Peter Lukas Haldenwang, Leif Markthaler, Vadim Moustafine, Axel Maria Laczkovics, Justus Thomas Strauch, Matthias Bechtel
BACKGROUND: The Labcor TBLP Supra™ prosthesis is a second-generation tissue valve that has evolved from the Labcor TBLP™ prosthesis, first introduced in 1984. The Supra prosthesis is a triple-composite porcine valve, with no specific anticalcification treatment being used in its production other than standard tissue fixation with 0.4% glutaraldehyde. To date, more than 100,000 Supra valves have been implanted, mainly in South America. Despite this remarkably high number of implants, only marginal data exist concerning durability and safety issues...
January 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28544835/leaflet-mechanical-properties-of-carpentier-edwards-perimount-magna-pericardial-aortic-bioprostheses
#16
Heide Kuang, Yue Xuan, Michelle Lu, Aart Mookhoek, Andrew D Wisneski, Julius M Guccione, Liang Ge, Elaine E Tseng
BACKGROUND: Transcatheter aortic valve replacement (TAVR) has recently been shown to be equivalent to surgical aortic valve replacement (SAVR) in intermediate-risk patients. As TAVR expands towards the traditionally SAVR population, TAVR versus SAVR durability becomes increasingly important. While the durability of TAVR is unknown, valve design - particularly with regards to leaflet stress - impacts on valve durability. Although leaflet stress cannot be measured directly, it can be determined using finite element modeling, with such models requiring the mechanical properties of the leaflets...
January 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28541520/cardiovascular-surgery-in-loeys-dietz-syndrome-types-1-4
#17
Kirsten Krohg-Sørensen, Per Snorre Lingaas, Runar Lundblad, Egil Seem, Benedicte Paus, Odd R Geiran
OBJECTIVES: The first publication of Loeys-Dietz syndrome (LDS) described aortic rupture at young ages. Experience with new LDS types showed that the clinical course varies, and thresholds for prophylactic surgery are discussed. As this is an uncommon disease, experience needs to be shared. METHODS: Retrospective review of patients with LDS types 1-4 undergoing cardiovascular surgery during the years 1991-2016. RESULTS: Thirty-five patients (including 6 children with LDS2) underwent 57 operations...
May 24, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28536530/the-total-artificial-heart-in-end-stage-congenital-heart-disease
#18
REVIEW
Chet R Villa, David L S Morales
The development of durable ventricular assist devices (VADs) has improved mortality rates and quality of life in patients with end stage heart failure. While the use of VADs has increased dramatically in recent years, there is limited experience with VAD implantation in patients with complex congenital heart disease (CHD), despite the fact that the number of patients with end stage CHD has grown due to improvements in surgical and medical care. VAD use has been limited in patients with CHD and end stage heart failure due to anatomic (systemic right ventricle, single ventricle, surgically altered anatomy, valve dysfunction, etc...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28535185/fifteen-years-experience-with-the-use-of-artificial-chords-for-valve-reconstruction-in-children%C3%A2
#19
Jolanda Kluin, Vladimir Sojak, David R Koolbergen, Rody Boon, Regina Bökenkamp, Mark G Hazekamp
OBJECTIVES: To retrospectively review our experience with artificial chords in mitral and tricuspid reconstructive surgery in children. METHODS: All consecutive paediatric (<18 years) patients who underwent mitral or tricuspid valve reconstruction with the use of artificial chords in our centre in the past 15 years were retrospectively analysed. RESULTS: Thirty-nine patients (age 3 days to 17 years) underwent reconstruction of the mitral ( n  = 27) or tricuspid ( n  = 12) valve using artificial chords...
May 23, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28532778/review-of-major-registries-and-clinical-trials-of-late-outcomes-after-transcatheter-aortic-valve-replacement
#20
REVIEW
Sameer Arora, Cassandra J Ramm, Paula D Strassle, Satyanarayana R Vaidya, Thomas G Caranasos, John P Vavalle
The results of the Placement of AoRtic TraNscathetER Valves (PARTNER) 2 trial established the feasibility of transcatheter aortic valve replacement (TAVR) for intermediate surgical risk patients. The expansion of TAVR into the low-risk patient population will largely depend on its durability outcomes due to the high life expectancy in low-risk patients. Long-term follow-up results from low-risk clinical trials will take several years to be reported. Given this, we performed a systematic review of current long-term data to provide further insights into TAVR durability and long-term patient survival...
July 15, 2017: American Journal of Cardiology
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