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https://www.readbyqxmd.com/read/27776914/the-fate-of-small-size-pericardial-heart-valve-prostheses-in-an-older-patient-population
#1
Ruggero De Paulis, Salvatore D'Aleo, Alessandro Bellisario, Andrea Salica, Luca P Weltert, Raffaele Scaffa, Lorenzo Guerrieri Wolf, Daniele Maselli, Michele Di Mauro
BACKGROUND: Structural valve deterioration (SVD) is the Achilles' heel of bioprostheses. Its correlation with younger age is well known. In recent years we exclusively reserved use of small-size Mitroflow valve prostheses (LivaNova, London, United Kingdom) to an older patient population with small aortic annuli. This study aimed to assess the incidence of SVD and its effect on patient survival and need for reoperation. MATERIALS AND METHODS: Two hundred five patients (aged 75...
September 28, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27637422/outcome-and-performance-of-bioprosthetic-pulmonary-valve-replacement-in-patients-with-congenital-heart-disease
#2
Rio Nomoto, Lynn A Sleeper, Michele J Borisuk, Lisa Bergerson, Frank A Pigula, Sitaram Emani, Francis Fynn-Thompson, John E Mayer, Pedro J Del Nido, Christopher W Baird
OBJECTIVES: The goal of this single-center series was to assess differences in reintervention by the type of valve used for surgical bioprosthetic pulmonary valve replacement and to identify independent predictors of reintervention. METHODS: Data were retrospectively collected for 611 patients undergoing pulmonary valve replacement from 1996 to 2014. Kaplan-Meier estimation and Cox proportional hazards regression methodologies were used. RESULTS: The median age of patients was 17...
November 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27592325/freedom-solo-associated-thrombocytopaenia-is-valve-dependent-and-not-due-to-in-vitro-pseudothrombocytopaenia
#3
Olaf Stanger, Brigitta Gahl, Michael Grabherr, Richard Krausler, Sarah Longnus, Andreas Meinitzer, Janne Cadamuro
BACKGROUND: Use of the Freedom SOLO (FS) stentless aortic bioprosthesis is limited by a unique and as yet unexplained severe decrease in postoperative platelet count in the absence of FS-related excess bleeding or thromboembolism. We investigated whether anticoagulant-associated pseudothrombocytopaenia could explain this complication. METHODS: Thirty consecutive patients (mean age 75.4±7.7 years, 11 [36.7%] female) underwent elective aortic valve replacement (AVR) with either the stented bovine Mitroflow (MF, n=18) or the stentless bovine FS (n=12) aortic valve bioprostheses...
August 16, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/27549228/performance-of-stented-biological-valves-for-right-ventricular-outflow-tract-reconstruction
#4
Christian Buchholz, Andreas Mayr, Ariawan Purbojo, Martin Glöckler, Okan Toka, Robert A Cesnjevar, André Rüffer
OBJECTIVES: This retrospective single-centre review presents mid- and long-term results of stented biological valves (SBVs) in the pulmonary position. METHODS: Fifty-two SBVs (17 Carpentier-Edwards Supraannular; 13 Carpentier-Edwards Perimount; 12 St. Jude Medical Trifecta; 4 Sorin Mitroflow; 4 Sorin Soprano; 2 Sorin More) were implanted between 2000 and 2015. The median valve size, patient age and weight were 23 mm (range 19-27), 22.8 years (range 5-77) and 62...
August 22, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27517167/hemodynamic-performance-of-endovascular-valves-as-valve-in-valve-in-small-stented-bioprosthesis
#5
Ralf-Uwe Kuehnel, Martin Hartrumpf, Michael Erb, Johannes M Albes
Objective Endovascular valve in stented biological valve implantation (valve-in-valve transcatheter aortic valve implantation [TAVI ViV]) is increasingly becoming a valid option for bioprosthesis degeneration. TAVI implantation in small stented biological valves below 23 mm is controversially discussed. Reduced opening area and high gradients are typical objections against this procedure in cases of small bioprosthesis. Systematic studies about the hemodynamic performance of endovascular valves in small stented bioprosthesis, however, do not exist...
August 12, 2016: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/27343502/near-catastrophic-accelerated-structural-degeneration-of-the-perimount-magna-pericardial-bioprosthesis-in-children
#6
Ranjit Philip, T K Susheel Kumar, B Rush Waller, Mia McCoy, Christopher J Knott-Craig
Experience with pericardial bioprostheses in young patients is limited. Accelerated degeneration of the Mitroflow valve has recently been reported. We report early accelerated structural valve degeneration with the Perimount Magna bioprosthesis, which has not been previously reported. Young patients with the Magna bioprosthesis are at high risk for rapid progression to severe stenosis, which underscores their need for more vigilant surveillance. The benefits and risks of these bioprosthetic valves must be weighed carefully when options for replacement in these young patients are discussed...
July 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27230086/opening-closing-pattern-of-four-pericardial-prostheses-results-from-an-in-vitro-study-of-leaflet-kinematics
#7
Giordano Tasca, Gianfranco Beniamino Fiore, Andrea Mangini, Claudia Romagnoni, Amando Gamba, Alberto Redaelli, Carlo Antona, Riccardo Vismara
Pericardial and porcine stented aortic valves have different leaflet kinematics. To study the biomechanics of a prosthesis thoroughly, the in vitro setting is the most appropriate. The aim of our study was to find out whether the prosthesis design in which the pericardial sheet is outside the stent post might influence the opening and closing patterns of the leaflets. Four pericardial prostheses (Magna Ease [MG] 21, Trifecta [TRI] 21, Soprano-Armonia [SA] 20 and Mitroflow [MF] 23) that fitted aortic roots with a native annulus diameter of 2...
May 26, 2016: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/26991888/long-term-outcomes-and-durability-of-the-mitroflow-aortic-bioprosthesis
#8
Victor X Mosquera, Alberto Bouzas-Mosquera, Carlos Velasco-García, Javier Muñiz, Francisco Estévez-Cid, Francisco Portela-Torron, José M Herrera-Noreña, José J Cuenca-Castillo
BACKGROUND: This study aims to determine the incidence and causes of structural valve deterioration (SVD) among all models of Mitroflow bioprostheses (A12/LX/DL), as well as to define their long-term clinical and hemodynamic performance. METHODS AND RESULTS: We retrospectively reviewed a series of 1023 patients who underwent aortic valve replacement with Mitroflow bioprostheses between 2001 and 2014. A small aortic root was found in 22.4% of patients. There were two cases of severe patient-prosthesis mismatch...
May 2016: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/26984983/durability-after-aortic-valve-replacement-with-the-mitroflow-versus-the-perimount-pericardial-bioprosthesis-a-single-centre-experience-in-2393-patients
#9
Per Hostrup Nielsen, Vibeke Hjortdal, Ivy Susanne Modrau, Henrik Jensen, Hans-Henrik Kimose, Kim Terp, Steen Hvitfelt Poulsen, Morten Smerup, Sten Lyager Nielsen
OBJECTIVES: This study compares the durability and risk of reoperation in patients undergoing aortic valve replacement (AVR) with either a Mitroflow or a Carpentier-Edwards (CE) pericardial bioprosthesis. Since AVR with bioprosthetic valves has increased progressively in recent years as compared to mechanical valves, especially in patients aged 60-70 years, there has been renewed interest in the long-term durability of current pericardial bioprostheses. METHODS: We compared 440 AVR with Mitroflow valves with 1953 AVR with CE pericardial valves implanted from 1999 to 2014 with regard to reoperation, reoperation for structural valve deterioration (SVD) and all-cause mortality...
June 2016: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/26897839/a-comprehensive-fluid-dynamic-and-geometric-study-for-an-in-vitro-comparison-of-four-surgically-implanted-pericardial-stented-valves
#10
COMPARATIVE STUDY
Giordano Tasca, Riccardo Vismara, Gianfranco Beniamino Fiore, Andrea Mangini, Claudia Romagnoni, Alberto Redaelli, Carlo Antona
BACKGROUND AND AIM OF THE STUDY: Many variables may affect the fluid dynamic of an implanted bioprosthesis. In-vitro studies have provided accurate data such that, when different prostheses are implanted in the same true aortic root, it should be possible to make a fair comparison. The study aim was to evaluate the fluid dynamic and geometric characteristics of the four most widely used stented pericardial bioprostheses. METHODS: Four types of pericardial prosthesis (Magna Ease 21, Trifecta 21, Soprano-Armonia 20, and Mitroflow 23) that fitted eight aortic roots with a native annulus diameter of 2...
September 2015: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/26651959/fate-of-aortic-bioprostheses-an-18-year-experience
#11
Alessandro Piccardo, Jean David Blossier, Alexandre Le Guyader, Isabelle Orsel, Seifeddine Sekkal, Elisabeth Cornu, Marc Laskar
OBJECTIVE: To report our experience in aortic valve replacement with the Mitroflow (Sorin, Vancouver, Canada) aortic bioprosthesis. METHODS: We retrospectively reviewed all patients who underwent aortic valve replacement with a Mitroflow bioprosthesis at our institution from January 1994 to December 2011. No exclusion criteria were retained. Patients were followed yearly. Echocardiography follow-up was performed systematically before the hospital discharge and annually by patients' cardiologists...
March 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/26568057/sudden-cardiac-arrest-during-emergency-caesarean-delivery-in-a-31-year-old-woman-due-to-accelerated-structural-valve-degeneration-of-an-aortic-valve-bioprosthesis
#12
Crochan John O'Sullivan, Eva Bühlmann Lerjen, Daniela Pellegrini, Franz Robert Eberli
The choice of prosthetic valve to implant in women of childbearing age requiring a valve replacement is challenging. Mechanical valves mandate the use of oral anticoagulation (OAC) for the prevention of thromboembolic complications, but the use of OAC during pregnancy can lead to maternal and fetal complications, in particular, warfarin embryopathy. Conversely, the use of bioprosthetic valves during pregnancy eliminates the need for OAC, but can instead be associated with accelerated structural valve degeneration...
2015: BMJ Case Reports
https://www.readbyqxmd.com/read/26429854/first-reported-successful-femoral-valve-in-valve-transcatheter-aortic-valve-replacement-using-the-edwards-sapien-3-valve
#13
Stephane Fournier, Pierre Monney, Christan Roguelov, Andrea Zuffi, Juan F Iglesias, Salah D Qanadli, Cecile Courbon, Eric Eeckhout, Olivier Muller
OBJECTIVES: Management of degenerated aortic valve bioprosthesis classically requires redo surgery, but transcatheter aortic valve-in-valve implantation is becoming a valid alternative in selected cases. In the case of a degenerated Mitroflow bioprosthesis, TAVR is associated with an additional challenge due to a specific risk of coronary occlusion. We aimed to assess the safety and feasibility of transfemoral valve-in-valve implantation of the new Edwards Sapien 3 (Edwards Lifesciences) in a degenerated Mitroflow bioprosthesis (Sorin Group, Inc)...
October 2015: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/26371364/valve-in-valve-transcatheter-aortic-valve-implantation-overcoming-hostile-anatomy-evolut-r-for-the-treatment-of-mitroflow-bioprosthesis-dysfunction
#14
Neil Ruparelia, Antonio Colombo, Azeem Latib
Redo surgery is regarded as the first-line treatment option for patients presenting with prosthetic valve degeneration. However, many patients have concomitant co-morbidities and this option is associated with significant risk. Transcatheter valve-in-valve implantation is an alternative strategy depending on the bioprosthetic valve that is being treated. The Sorin Mitroflow bioprosthetic aortic valve has been regarded as a contraindication to valve-in-valve treatment due to the high risk of coronary obstruction...
October 2016: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/26208503/fracturing-the-ring-of-small-mitroflow-bioprostheses-by-high-pressure-balloon-predilatation-in-transcatheter-aortic-valve-in-valve-implantation
#15
Jens Erik Nielsen-Kudsk, Evald Høj Christiansen, Christian Juhl Terkelsen, Bjarne Linde Nørgaard, Kaare Troels Jensen, Lars Romer Krusell, Mariann Tang, Kim Terp, Kaj-Erik Klaaborg, Henning Rud Andersen
No abstract text is available yet for this article.
August 2015: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/26151953/first-lotus-aortic-valve-in-valve-implantation-to-treat-degenerated-mitroflow-bioprostheses
#16
Fausto Castriota, Caterina Cavazza, Gioel Gabrio Secco, Antonio Micari, Alberto Cremonesi
AIMS: Transcatheter aortic valve-in-valve implantation is an emerging alternative to conventional surgical aortic valve replacement (SAVR) in patients with degenerated aortic bioprostheses. This procedure presents a high risk of coronary occlusion, especially during treatment of patients implanted with a bioprosthesis with a lower distance between the leaflets and the coronary ostia, such as the Mitroflow valve (Sorin S.p.A., Milan, Italy). In this report we aim to describe the safety and feasibility of transfemoral valve-in-valve implantation of a new-generation Lotus™ Aortic Valve Replacement System (Boston Scientific, Marlborough, MA, USA) in a case of degenerated Mitroflow bioprostheses...
April 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/25975942/predictors-of-survival-and-modes-of-failure-after-mitroflow-aortic-valve-replacement-in-1-003-adults
#17
Mahesh Anantha Narayanan, Rakesh M Suri, Murat Ugur, Kevin L Greason, John M Stulak, Joseph A Dearani, Lyle D Joyce, Alberto Pochettino, Zhuo Li, Hartzell V Schaff
BACKGROUND: Midterm outcomes are unknown for patients undergoing aortic valve replacement (AVR) with a Mitroflow bovine pericardial prosthesis (Sorin Group, Inc) and without anticalcification treatment. Recent reports warn of early senescence in younger adults. METHODS: From January 2004 through December 2011, 1,003 adults underwent Mitroflow AVR. The mean follow-up time was 25.0 (standard deviation [20.6]) months (total, 2,060 patient-years; maximum, 9 years). The patients were stratified for analysis according to age at implantation: group A, <60 years (n = 63, 6...
August 2015: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/25818568/early-outcomes-of-pulmonary-valve-replacement-with-the-mitroflow-bovine-pericardial-bioprosthesis
#18
Sarah A Schubert, John L Myers, Allen R Kunselman, Joseph B Clark
BACKGROUND: Bovine pericardial valves are often used for pulmonary valve replacement (PVR) in patients with previously repaired congenital heart disease. Attention has recently focused on the safety of the Mitroflow (Sorin Group USA, Arvada, CO) bovine pericardial valve after a national alert describing several cases of sudden valve failure in young patients. In response, we reviewed our experience using the Mitroflow bioprosthesis for PVR. METHODS: Medical records were reviewed for all patients who underwent PVR using a Mitroflow valve at our center (2008-2013)...
May 2015: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/25661576/single-institution-experience-with-transcatheter-valve-in-valve-implantation-emphasizing-strategies-for-coronary-protection
#19
Daniele Camboni, Andreas Holzamer, Bernhard Flörchinger, Kurt Debl, Dierk Endeman, York Zausig, Lars S Maier, Christof Schmid, Michael Hilker
BACKGROUND: Transcatheter valve-in-valve (VIV) implantation evolved as a therapeutic alternative, despite an increased risk of coronary obstruction in comparison with a regular transcatheter aortic valve implantation (TAVI). We report a comprehensive single-institution experience emphasizing strategies to reduce the risk of myocardial ischemia. METHODS: Since 2009, 639 patients underwent a TAVI procedure in our institution. All patients are prospectively collected into an institutional registry...
May 2015: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/25442994/pathologic-evaluation-of-28-mitroflow-pericardial-valves-a-12-year-experience
#20
Adriana Luk, Robert J Cusimano, Jagdish Butany
BACKGROUND: Mitroflow pericardial valves (model A12) are used for aortic valve replacement with favorable hemodynamic results, and are ideal for patients with a small aortic annulus as the pericardium is mounted outside the stent frame. We report the morphologic findings in explanted Mitroflow valves from our institution and demonstrate pathologic changes leading to explantation. METHODS: From 2001 to 2013, 28 Mitroflow valves were analyzed at our institution. Demographic data was recorded...
January 2015: Annals of Thoracic Surgery
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