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https://www.readbyqxmd.com/read/28697033/ventricular-perforation-during-open-surgical-balloon-expandable-mitral-valve-replacement-a-case-report
#1
Yousef M Hamdeh, Jordan E Goldhammer, Nicholas J Ruggiero, John W Entwistle
A 79-year-old woman with severe mitral annular calcification was scheduled for mitral valve replacement. A SAPIEN 3 valve was implanted in mitral position using an open surgical approach. Immediately after cardiopulmonary bypass, bleeding from an unidentified source was encountered. Cardiopulmonary bypass was emergently resumed and a laceration of the left ventricular apex due to the valve delivery system was detected. Risk factors specific to the open surgical approach include a decompressed ventricle, decreased annulus to apical distance, and the absence of continuous fluoroscopic and echocardiographic imaging...
July 10, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28691908/high-pressure-balloon-fracturing-of-small-dysfunctional-mitroflow-bioprostheses-facilitates-transcatheter-aortic-valve-in-valve-implantation
#2
Jens Erik Nielsen-Kudsk, Asger Andersen, Christian Juhl Therkelsen, Evald Høj Christensen, Kaare Troels Jensen, Lars Romer Krusell, Mariann Tang, Kim Allan Terp, Kaj-Erik Klaaborg, Jacob Raben Greisen, Bjarne Linde Nørgaard, Henning Rud Andersen
AIMS: Transcatheter valve-in-valve (VIV) implantation in small surgical tissue valves is challenged by the problem of residual stenosis. We report our first ten cases of fracturing small dysfunctional Mitroflow bioprostheses by high-pressure balloon dilatation to increase the internal diameter of the surgical valve before VIV (BF-VIV). METHODS AND RESULTS: BF-VIV was performed in 10 patients (mean age 84±4 years) with failing Mitroflow valves size 19 mm (n=3, threshold of fracture 15 atm) and 21 mm (n=7, threshold of fracture 13 atm)...
July 11, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28676065/prior-balloon-valvuloplasty-versus-direct-transcatheter-aortic-valve-implantation-directavi-study-protocol-for-a-randomized-controlled-trial
#3
Florence Leclercq, Pierre Robert, Jessica Labour, Benoit Lattuca, Mariama Akodad, Jean-Christophe Macia, Richard Gervasoni, Francois Roubille, Thomas Gandet, Laurent Schmutz, Erika Nogue, Nicolas Nagot, Bernard Albat, Guillaume Cayla
BACKGROUND: Balloon predilatation of the aortic valve has been regarded as an essential step during the transcatheter aortic valve implantation (TAVI) procedure. However, recent evidence has suggested that aortic valvuloplasty may cause complications and that high success rates may be obtained without prior dilatation of the valve. We hypothesize that TAVI performed without predilatation of the aortic valve and using new-generation balloon-expandable transcatheter heart valves is associated with a better net clinical benefit than TAVI performed with predilatation...
July 4, 2017: Trials
https://www.readbyqxmd.com/read/28658491/health-status-benefits-of-transcatheter-vs-surgical-aortic-valve-replacement-in-patients-with-severe-aortic-stenosis-at-intermediate-surgical-risk-results-from-the-partner-2-randomized-clinical-trial
#4
Suzanne J Baron, Suzanne V Arnold, Kaijun Wang, Elizabeth A Magnuson, Khaja Chinnakondepali, Raj Makkar, Howard C Herrmann, Susheel Kodali, Vinod H Thourani, Samir Kapadia, Lars Svensson, David L Brown, Michael J Mack, Craig R Smith, Martin B Leon, David J Cohen
Importance: In patients with severe aortic stenosis (AS) at intermediate surgical risk, treatment with transcatheter aortic valve replacement (TAVR) or surgical aortic valve replacement (SAVR) results in similar 2-year survival. The effect of TAVR vs SAVR on health status in patients at intermediate surgical risk is unknown. Objective: To compare health-related quality of life among intermediate-risk patients with severe AS treated with either TAVR or SAVR. Design, Setting, and Participants: Between December 2011 and November 2013, 2032 intermediate-risk patients with severe AS were randomized to TAVR with the Sapien XT valve or SAVR in the Placement of Aortic Transcatheter Valve 2 Trial and were followed up for 2 years...
June 28, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28655156/comparison-of-latest-generation-transfemoral-self-expandable-and-balloon-expandable-transcatheter-heart-valves
#5
Andreas Schaefer, Matthias Linder, Moritz Seiffert, Gerhard Schoen, Florian Deuschl, Niklas Schofer, Yvonne Schneeberger, Stefan Blankenberg, Hermann Reichenspurner, Ulrich Schaefer, Lenard Conradi
OBJECTIVES: We herein aimed to compare acute 30-day outcomes of latest-generation self-expandable and balloon-expandable transcatheter heart valves. METHODS: From 2012 through 2016, 104 consecutive patients (study group, 69.2% female, 81.7 ± 5.5 years, logEuroSCORE I 15.9 ± 9.3%) received transfemoral transcatheter aortic valve implantation using the Symetis ACURATE neo ® transcatheter heart valve. A control group of patients after transfemoral transcatheter aortic valve implantation with the Edwards Sapien 3™ transcatheter heart valve was retrieved from our database and matched to the study group...
June 26, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28652630/-sici-gise-community-campania-survey-donna-tavi-incanta-perioperative-and-short-term-outcome-of-transcatheter-aortic-valve-implantation-in-women
#6
Tiziana Attisano, Angelo Silverio, Emilio Di Lorenzo, Tullio Tesorio, Domenico Di Girolamo, Paolo Golino, Arturo Giordano, Giuseppe Valva, Giovanni Esposito, Maurizio Cappelli Bigazzi, Carlo Briguori, Ida Monteforte, Giovanni Dialetto, Paolo Rubino, Francesco Vigorito, Pietro Giudice, Ciro Mauro
BACKGROUND: Nowadays the prognostic role of gender as a relevant factor after transcatheter aortic valve implantation (TAVI) is still unfair, since available data in the literature are few and uneven. The aim of this survey was to collect acute and 30-day safety and efficacy clinical data in high- and intermediate-risk women, who underwent TAVI with new-generation devices, in the Campania Region. METHODS: All medium and high-volume TAVI centers in Campania have been invited to fulfill an online, ad-hoc questionnaire, collecting pre-, peri- and post-procedural data concerning female patients, treated between January and December 2016...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28647466/incidence-indications-and-predicting-factors-of-permanent-pacemaker-implantation-after-transcatheter-aortic-valve-implantation-a-retrospective-study
#7
Mathieu Becker, Hugues Blangy, Thierry Folliguet, Thibault Villemin, Luc Freysz, Amandine Luc, Pablo Maureira, Batric Popovic, Arnaud Olivier, Nicolas Sadoul
BACKGROUND: As the number of transcatheter aortic valve implantation (TAVI) procedures is constantly increasing, it is important to consider common complications, such as pacemaker (PM) implantation, and their specific risk factors. AIMS: Echocardiographic, computed tomography and electrocardiographic data were analysed to determine the predicting factors, if any, associated with PM implantation. METHODS: This retrospective study included patients referred to Nancy University Hospital for a TAVI procedure from January 2013 to December 2015...
June 21, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28643214/new-generation-devices-for-transfemoral-transcatheter-aortic-valve-replacement-are-superior-compared-with-last-generation-devices-with-respect-to-varc-2-outcome
#8
Julia Seeger, Birgid Gonska, Wolfgang Rottbauer, Jochen Wöhrle
New generation devices for transcatheter aortic valve replacement have been optimized to improve clinical outcome. We compared procedural, in-hospital, 30 days and 12 months outcome of the new generation repositionable Boston Lotus Valve and the balloon-expandable Edwards Sapien 3 valve with the last generation self-expandable Medtronic CoreValve and the balloon-expandable Edwards Sapien XT. Between 2010 and 2015 consecutive patients treated with the Medtronic CoreValve (N = 100), Edwards Sapien XT (N = 100), Edwards Sapien S3 (N = 100) and Boston Lotus device (N = 100) were enrolled...
June 22, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28610588/cell-foundry-with-high-product-specificity-and-catalytic-activity-for-21-deoxycortisol-biotransformation
#9
Shuting Xiong, Ying Wang, Mingdong Yao, Hong Liu, Xiao Zhou, Wenhai Xiao, Yingjin Yuan
BACKGROUND: 21-deoxycortisol (21-DF) is the key intermediate to manufacture pharmaceutical glucocorticoids. Recently, a Japan patent has realized 21-DF production via biotransformation of 17-hydroxyprogesterone (17-OHP) by purified steroid 11β-hydroxylase CYP11B1. Due to the less costs on enzyme isolation, purification and stabilization as well as cofactors supply, whole-cell should be preferentially employed as the biocatalyst over purified enzymes. No reports as so far have demonstrated a whole-cell system to produce 21-DF...
June 13, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28606165/pitfalls-in-tamvi-experience-with-the-repositionable-lotus%C3%A2-valve-system
#10
Paul P Heinisch, Fabien Praz, Bernhard Winkler, Stephan Windecker, Christoph Huber, Thierry Carrel
BACKGROUND: Simultaneous transapical implantation of transcatheter heart valves in the native mitral and aortic position may be considered as an alternative to surgical valve replacement in high-risk patients presenting with combined valve disease. CASE PRESENTATION: A 59-year-old female with severe aortic stenosis, severe mitral stenosis with mild mitral insufficiency, persistent atrial fibrillation, severe chronic obstructive pulmonary disease and NYHA class of IV was evaluated by our interdisciplinary heart team...
June 12, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28605423/source-3-1-year-outcomes-post-transcatheter-aortic-valve-implantation-using-the-latest-generation-of-the-balloon-expandable-transcatheter-heart-valve
#11
Olaf Wendler, Gerhard Schymik, Hendrik Treede, Helmut Baumgartner, Nicolas Dumonteil, Franz-Josef Neumann, Giuseppe Tarantini, José Luis Zamorano, Alec Vahanian
Aims: Transcatheter aortic valve implantation (TAVI) has developed from a procedure for patients with aortic stenosis inoperable or high risk for surgery, into a treatment option even for intermediate risk elderly patients. This development has been facilitated by the clinical learning curve and constant improvements of transcatheter heart valves used. We present total 1-year results of SOURCE 3, the European post-approval multicentre registry of the latest generation balloon expandable SAPIEN 3TM (Edwards Lifesciences, Irvine, CA, USA)...
June 12, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28593967/the-age-of-the-hominin-fossils-from-jebel-irhoud-morocco-and-the-origins-of-the-middle-stone-age
#12
Daniel Richter, Rainer Grün, Renaud Joannes-Boyau, Teresa E Steele, Fethi Amani, Mathieu Rué, Paul Fernandes, Jean-Paul Raynal, Denis Geraads, Abdelouahed Ben-Ncer, Jean-Jacques Hublin, Shannon P McPherron
The timing and location of the emergence of our species and of associated behavioural changes are crucial for our understanding of human evolution. The earliest fossil attributed to a modern form of Homo sapiens comes from eastern Africa and is approximately 195 thousand years old, therefore the emergence of modern human biology is commonly placed at around 200 thousand years ago. The earliest Middle Stone Age assemblages come from eastern and southern Africa but date much earlier. Here we report the ages, determined by thermoluminescence dating, of fire-heated flint artefacts obtained from new excavations at the Middle Stone Age site of Jebel Irhoud, Morocco, which are directly associated with newly discovered remains of H...
June 7, 2017: Nature
https://www.readbyqxmd.com/read/28592838/the-first-neanderthal-remains-from-an-open-air-middle-palaeolithic-site-in-the-levant
#13
Ella Been, Erella Hovers, Ravid Ekshtain, Ariel Malinski-Buller, Nuha Agha, Alon Barash, Daniella E Bar-Yosef Mayer, Stefano Benazzi, Jean-Jacques Hublin, Lihi Levin, Noam Greenbaum, Netta Mitki, Gregorio Oxilia, Naomi Porat, Joel Roskin, Michalle Soudack, Reuven Yeshurun, Ruth Shahack-Gross, Nadav Nir, Mareike C Stahlschmidt, Yoel Rak, Omry Barzilai
The late Middle Palaeolithic (MP) settlement patterns in the Levant included the repeated use of caves and open landscape sites. The fossil record shows that two types of hominins occupied the region during this period-Neandertals and Homo sapiens. Until recently, diagnostic fossil remains were found only at cave sites. Because the two populations in this region left similar material cultural remains, it was impossible to attribute any open-air site to either species. In this study, we present newly discovered fossil remains from intact archaeological layers of the open-air site 'Ein Qashish, in northern Israel...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28582640/the-causes-of-thrombocytopenia-after-transcatheter-aortic-valve-implantation
#14
Maciej Mitrosz, Remigiusz Kazimierczyk, Bozena Sobkowicz, Ewa Waszkiewicz, Pawel Kralisz, Marek Frank, Jaroslaw Piszcz, Marzenna Galar, Slawomir Dobrzycki, Wlodzimierz J Musial, Tomasz Hirnle, Karol A Kaminski, Agnieszka M Tycinska
INTRODUCTION: Even though thrombocytopenia following transcatheter aortic valve implantation (TAVI) has been described, further investigation of this phenomenon is needed. AIMS: To determine which factors may explain the fall in platelet count that occurs after implantation of a TAVI device, including markers of platelet and blood coagulation activation. MATERIAL AND METHODS: 32 patients without previous indications for dual antiplatelet therapy (mean age 78...
May 26, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28582580/transaortic-transcatheter-aortic-valve-implantation-using-sapien-xt-or-sapien-3-valves-in-the-route-registry%C3%A2
#15
Mauro Romano, Derk Frank, Riccardo Cocchieri, Dariusz Jagielak, Nikolaos Bonaros, Marco Aiello, Joel Lapeze, Mika Laine, Sidney Chocron, Douglas Muir, Walter Eichinger, Matthias Thielmann, Louis Labrousse, Kjell Arne Rein, Jean-Philippe Verhoye, Gino Gerosa, Hardy Baumbach, Cornelia Deutsch, Peter Bramlage, Martin Thoenes, Vinayak Bapat
OBJECTIVES: Transaortic (TAo) access for transcatheter aortic valve implantation (TAVI) is an alternative to the conventional transfemoral or transapical routes. Data comparing the characteristics and outcomes of TAo-TAVI using the SAPIEN XT and SAPIEN 3 heart valves are scarce. The objective of the current analysis was to provide such information. METHODS: ROUTE is an international, prospective, observational registry. Patients with severe calcific aortic stenosis scheduled for TAo-TAVI with an Edwards SAPIEN XT or a SAPIEN 3 heart valve were consecutively enrolled at 22 centres across Europe between February 2013 and February 2015...
June 5, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28579800/meat-and-nicotinamide-a-causal-role-in-human-evolution-history-and-demographics
#16
REVIEW
Adrian C Williams, Lisa J Hill
Hunting for meat was a critical step in all animal and human evolution. A key brain-trophic element in meat is vitamin B3 / nicotinamide. The supply of meat and nicotinamide steadily increased from the Cambrian origin of animal predators ratcheting ever larger brains. This culminated in the 3-million-year evolution of Homo sapiens and our overall demographic success. We view human evolution, recent history, and agricultural and demographic transitions in the light of meat and nicotinamide intake. A biochemical and immunological switch is highlighted that affects fertility in the 'de novo' tryptophan-to-kynurenine-nicotinamide 'immune tolerance' pathway...
2017: International Journal of Tryptophan Research: IJTR
https://www.readbyqxmd.com/read/28574374/nitrophorins-and-nitrobindins-structure-and-function
#17
REVIEW
Giovanna De Simone, Paolo Ascenzi, Alessandra di Masi, Fabio Polticelli
Classical all α-helical globins are present in all living organisms and are ordered in three lineages: (i) flavohemoglobins and single domain globins, (ii) protoglobins and globin coupled sensors and (iii) truncated hemoglobins, displaying the 3/3 or the 2/2 all α-helical fold. However, over the last two decades, all β-barrel and mixed α-helical-β-barrel heme-proteins displaying heme-based functional properties (e.g. ligand binding, transport and sensing) closely similar to those of all α-helical globins have been reported...
May 24, 2017: Biomolecular Concepts
https://www.readbyqxmd.com/read/28569053/pathology-of-balloon-expandable-transcatheter-aortic-valves
#18
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/28567700/different-impact-of-aortic-regurgitation-assessed-by-aortic-root-angiography-after-transcatheter-aortic-valve-implantation-according-to-baseline-left-ventricular-ejection-fraction-and-n-terminal-pro-b-type-natriuretic-peptide
#19
Hidehiro Kaneko, Frank Hoelschermann, Thomas Schau, Grit Tambor, Michael Neuss, Christian Butter
Transcatheter aortic valve implantation (TAVI) is an alternative therapeutic option for severe aortic stenosis. Aortic regurgitation (AR) is commonly observed after TAVI and increases the mortality rate. We hypothesized that the influence of significant AR, defined as that more severe than mild AR, on survival rate after TAVI might differ according to the baseline left ventricular ejection fraction (LVEF) and N-terminal pro-B-type natriuretic peptide (NT-pro BNP) level. We categorized 856 patients who underwent transfemoral TAVI into 2 groups according to their baseline LVEF (<40 and ≥40%) and NT-pro BNP levels (≤5000 and >5000 pg/mL)...
May 31, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28566290/outcome-with-the-repositionable-and-retrievable-boston-scientific-lotus-valve-compared-with-the-balloon-expandable-edwards-sapien-3-valve-in-patients-undergoing-transfemoral-aortic-valve-replacement
#20
Julia Seeger, Birgid Gonska, Wolfgang Rottbauer, Jochen Wöhrle
BACKGROUND: New generation devices for transfemoral aortic valve replacement were optimized on valve positioning and reduction of residual aortic regurgitation. We compared 30-day, 12-month, and 24-month outcomes of the Boston Scientific Lotus valve (Lotus) and the balloon-expandable Edwards Sapien 3 (ES3) valve. Primary end point was all-cause mortality or disabling stroke within 12 months. METHODS AND RESULTS: Between 2014 and 2016, 537 patients were enrolled at our center, and 202 patients received Lotus and 335 ES3...
June 2017: Circulation. Cardiovascular Interventions
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