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Expandable prosthetic valves

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https://www.readbyqxmd.com/read/28610465/successful-truncal-valve-replacement-with-a-mechanical-valve-after-bilateral-pulmonary-artery-banding
#1
Shuichi Yoshitake, Yukihiro Kaneko, Kazuki Yakuwa, Ikuya Achiwa
Surgical management of truncus arteriosus, or common arterial trunk, has expanded over the past three decades to include earlier surgical intervention, initially during infancy and now chiefly in the neonatal period. Many studies have shown that preoperative truncal valve insufficiency is an independent risk factor for mortality. We herein present the case of a five-month-old boy with severe truncal valve insufficiency who underwent repair of common arterial trunk and prosthetic replacement of the truncal valve with associated annular enlargement after initial stabilization in the newborn period via palliative bilateral pulmonary artery banding...
January 1, 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28516094/combined-transapical-transcatheter-aortic-valve-replacement-and-thoracic-endovascular-aortic-repair-for-severe-aortic-stenosis-and-arch-aneurysm
#2
Yuanjia Zhu, Eric E Roselli, Jay J Idrees, Samir Kapadia, Lars G Svensson
An 83-year-old male with multiple comorbidities presented with critical aortic stenosis and a saccular aortic arch aneurysm. Through a mini thoracotomy, a balloon expandable transcatheter aortic valve was delivered transapically. A thoracic stent graft was then delivered through the prosthetic valve and deployed in the arch, while a covered stent was deployed in the left common carotid artery. Three-year postoperative computed tomography showed a thrombosed arch aneurysm with decreased size. This case demonstrates the feasibility of using combined transapical transcatheter technologies to treat multicomponent disease in a high-risk patient during a single operation...
October 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28395281/the-role-of-stress-echocardiography-in-valvular-heart-disease-a-current-appraisal
#3
James L Gentry Iii, Dermot Phelan, Milind Y Desai, Brian P Griffin
Stress echocardiography is a widely available, safe, low-cost, versatile imaging modality which is becoming increasingly recognized as a valuable tool in the assessment of patients with native and prosthetic left-sided valvular heart disease. It provides a quantitative assessment to help guide clinical decision-making when discordance exists between symptoms and severity of valve disease. Exercise (treadmill or bicycle) remains the preferred stress modality, but pharmacological augmentation with dobutamine can be used if needed...
2017: Cardiology
https://www.readbyqxmd.com/read/28379513/five-year-echocardiographic-follow-up-after-tavi-structural-and-functional-changes-of-a-balloon-expandable-prosthetic-aortic-valve
#4
Manuela Muratori, Laura Fusini, Gloria Tamborini, Paola Gripari, Sarah Ghulam Ali, Massimo Mapelli, Franco Fabbiocchi, Piero Trabattoni, Maurizio Roberto, Marco Agrifoglio, Francesco Alamanni, Antonio L Bartorelli, Mauro Pepi
Aims: Scarce data are available on the long-term structural and functional changes of prosthetic valves after transcatheter aortic valve implantation (TAVI). The objective was to evaluate with echocardiography the long-term structural and functional changes of prosthetic valves after TAVI. Methods and results: Structural valve deterioration (SVD) was defined as leaflet thickening ≥3mm, presence of calcification and abnormal leaflet motion. Five-year echocardiographic follow-up was available in 96 out of 318 patients who underwent TAVI with a balloon-expandable device between April 2008 and December 2011...
March 30, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28277266/long-term-follow-up-of-patients-with-severe-aortic-stenosis-treated-with-a-self-expanding-prosthesis
#5
Pablo Avanzas, Isaac Pascual, Antonio J Muñoz-García, José Segura, Juan H Alonso-Briales, Javier Suárez de Lezo, Manuel Pan, Manuel F Jiménez-Navarro, José López-Aguilera, José M Hernández-García, César Morís
INTRODUCTION AND OBJECTIVES: Transcatheter aortic valve implantation (TAVI) is a safe and effective alternative to surgical treatment in patients with severe aortic stenosis (AS) and those who are inoperable or at high surgical risk. The primary objective of this study was to evaluate the long-term survival of consecutive patients with severe AS treated with TAVI. METHODS: Observational, multicenter, prospective, follow-up study of consecutive patients with severe symptomatic AS treated by TAVI in 3 high-volume hospitals in Spain...
October 28, 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28240641/transcatheter-mitral-valve-replacement-with-a-novel-self-expandable-prosthesis-single-institutional-experience-procedural-outcomes-and-follow-up
#6
Gian Paolo Ussia, Valeria Cammalleri, Jawahar L Mehta, Kunal Sarkar, Saverio Muscoli, Pasquale de Vico, Giovanni Ruvolo, Francesco Romeo
AIMS: We report our experience with the CardiAQ prosthetic valve using both transapical and transseptal access. Aim of our study was proving the feasibility, safety and effectiveness of a novel transcatheter mitral valve bioprosthesis. METHODS: Four patients with severe mitral regurgitation, not eligible for mitral valve surgery, were treated with the CardiAQ valve. The procedures were performed under general anaesthesia, fluoroscopic and transesophageal echocardiographic guidance...
June 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28109558/choice-of-balloon-expandable-versus-self-expanding-transcatheter-aortic-valve-impacts-hemodynamics-differently-according-to-aortic-annular-size
#7
Toby Rogers, Arie Steinvil, Jiaxiang Gai, Rebecca Torguson, Edward Koifman, Sarkis Kiramijyan, Smita Negi, Sang Yeub Lee, Petros Okubagzi, Lowell F Satler, Itsik Ben-Dor, Augusto D Pichard, Ron Waksman
We sought to determine whether balloon-expandable valve (BEV) and self-expanding valve (SEV) affect valve hemodynamics differently according to native aortic annulus size. Transcatheter aortic valve replacement can achieve superior prosthetic valve hemodynamics compared with surgical aortic valve replacement, particularly in patients with small aortic annulus. One hundred ninety-three consecutive transcatheter aortic valve replacement patients were grouped into tertiles defined by computed tomography derived aortic annulus systolic perimeter...
March 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28044989/surgical-mitral-valve-replacement-with-the-melody-valve-in-infants-and-children-the-italian-experience
#8
Alessandro Frigiola, Francesca Romana Pluchinotta, Antonio Saracino, Alessandro Giamberti, Carmelo Arcidiacono, Luciane Piazza, Matteo Reali, Gianfranco Butera, Alessandro Varrica, Mario Carminati
AIMS: Paediatric patients with mitral valve (MV) disease have limited options for prosthetic MV replacement. Based on long experience with the stented bovine jugular vein graft (Melody valve) in the right ventricular outflow tract, we aimed to test the use of the Melody valve as a surgical implant in the mitral position in a small group of infants with congenital mitral disease. METHODS AND RESULTS: Eight patients, aged from 3 months to 6.2 years, with congenital MV dysplasia underwent Melody valve implantation in the mitral position between March 2014 and October 2015...
April 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28040318/transcatheter-mitral-valve-replacement-for-patients-with-symptomatic%C3%A2-mitral%C3%A2-regurgitation-a-global-feasibility-trial
#9
David W M Muller, Robert Saeid Farivar, Paul Jansz, Richard Bae, Darren Walters, Andrew Clarke, Paul A Grayburn, Robert C Stoler, Gry Dahle, Kjell A Rein, Marty Shaw, Gregory M Scalia, Mayra Guerrero, Paul Pearson, Samir Kapadia, Marc Gillinov, Augusto Pichard, Paul Corso, Jeffrey Popma, Michael Chuang, Philipp Blanke, Jonathon Leipsic, Paul Sorajja
BACKGROUND: Symptomatic mitral regurgitation (MR) is associated with high morbidity and mortality that can be ameliorated by surgical valve repair or replacement. Despite this, many patients with MR do not undergo surgery. Transcatheter mitral valve replacement (TMVR) may be an option for selected patients with severe MR. OBJECTIVES: This study aimed to examine the effectiveness and safety of TMVR in a cohort of patients with native valve MR who were at high risk for cardiac surgery...
January 31, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28008211/dynamic-tracking-of-prosthetic-valve-motion-and-deformation-from-bi-plane-x-ray-views-feasibility-study
#10
Charles R Hatt, Martin Wagner, Amish N Raval, Michael A Speidel
Transcatheter aortic valve replacement (TAVR) requires navigation and deployment of a prosthetic valve within the aortic annulus under fluoroscopic guidance. To support improved device visualization in this procedure, this study investigates the feasibility of frame-by-frame 3D reconstruction of a moving and expanding prosthetic valve structure from simultaneous bi-plane x-ray views. In the proposed method, a dynamic 3D model of the valve is used in a 2D/3D registration framework to obtain a reconstruction of the valve...
2016: Proceedings of SPIE
https://www.readbyqxmd.com/read/27989064/transcatheter-mitral-valve-in-ring-for-progressive-mitral-stenosis-after-prior-repair-with-annuloplasty-a-novel-balloon-sizing-technique
#11
Michael Sola, Thomas G Caranasos, Michael Yeung, Cassandra J Ramm, Kristen Sell, John P Vavalle
An 83-year-old man with a previous mitral valve repair using a semi-rigid annuloplasty ring was found to have severe mitral stenosis. A transcatheter approach for mitral valve-in-ring replacement was selected due to the patient's high surgical risk. Pre-procedural computed tomography scans for transcatheter valve size selection were inconsistent with previously published recommendations. To determine the appropriate valve size, a 25 mm compliant balloon was inflated intraoperatively within the stenotic mitral ring, but yielded no resistance to movement and no 'waist'...
March 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27556085/antireflux-versus-conventional-self-expanding-metallic-stents-sems-for-distal-esophageal-cancer-results-of-a-multicenter-randomized-trial
#12
E Coron, G David, S Lecleire, J Jacques, A Le Sidaner, T Barrioz, D Coumaros, C Volteau, B Vedrenne, P Bichard, C Boustière, Y Touchefeu, J Brégeon, F Prat, M Le Rhun
INTRODUCTION: Self-expanding metal stents (SEMS) are commonly used in the palliation of dysphagia in patients with inoperable esophageal carcinoma. However, they predispose to gastroesophageal reflux when deployed across the gastroesophageal junction. The aims of this study were to: 1) assess the influence of the antireflux valve on trans-prosthetic reflux (primary outcome); and 2) compare the results of SEMS with and without antireflux valve in terms of reflux symptoms, quality of life (QOL), improvement of dysphagia and adverse events (secondary outcomes)...
June 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27514383/effect-of-transcatheter-aortic-valve-implantation-on-intraoperative-left-ventricular-end-diastolic-pressure
#13
Kosaku Toyota, Takashi Ota, Katsutoshi Nagamine, Yasuhiro Koide, Takeshi Nomura, Futoshi Yamanaka, Koki Shishido, Masashi Tanaka, Shigeru Saito
Transcatheter aortic valve implantation (TAVI) for patients with aortic stenosis is a less invasive alternative to surgical aortic valve replacement. Despite this, careful anesthetic management, especially strict control of blood pressure and fluid management, is necessary. During TAVI, normalization of left ventricular afterload due to aortic balloon valvuloplasty and prosthetic valve deployment is expected to result in rapid improvement of systolic function and consequent improvement in diastolic function...
December 2016: Journal of Anesthesia
https://www.readbyqxmd.com/read/27496631/early-and-midterm-clinical-and-hemodynamic-outcomes-of-transcatheter-valve-in-valve-implantation-results-from-a-multicenter-experience
#14
MULTICENTER STUDY
Augusto D'Onofrio, Erjon Tarja, Laura Besola, Giampaolo Luzi, Marco Agrifoglio, Marco Aiello, Davide Gabbieri, Giuseppe Tarantini, Giulio Rizzoli, Francesco Musumeci, Gino Gerosa
BACKGROUND: Transcatheter valve-in-valve (VIV) implantation is an alternative option in inoperable or high-risk patients with prosthetic valve dysfunction. Aim of this retrospective multicenter study was to evaluate early and midterm clinical and hemodynamic outcomes of patients undergoing aortic (VIV-A) and mitral VIV (VIV-M). METHODS: We analyzed data of 66 procedures performed in 65 patients who underwent VIV procedures in the VIV-A and VIV-M position at 5 Italian institutions from January 2008 to May 2015...
December 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27442920/compliance-mismatch-and-compressive-wall-stresses-drive-anomalous-remodelling-of-pulmonary-trunks-reinforced-with-dacron-grafts
#15
Francesco Nappi, Angelo Rosario Carotenuto, Arsenio Cutolo, Pierre Fouret, Christophe Acar, Juan Carlos Chachques, Massimiliano Fraldi
Synthetic grafts are often satisfactory employed in cardiac and vascular surgery, including expanded poly(ethylene terephthalate) or expanded poly(tetrafluoroethylene). However, accumulating evidences suggest the emergence of worrisome issues concerning the long-term fate of prosthetic grafts as large vessel replacement. Disadvantages related to the use of synthetic grafts can be traced in their inability of mimicking the elasto-mechanical characteristics of the native vascular tissue, local suture overstress leading to several prosthesis-related complications and retrograde deleterious effects on valve competence, cardiac function and perfusion...
October 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27333215/improved-transcatheter-aortic-valve-implantation-for-aortic-regurgitation-using-a-snare-loop-assisted-device-the-first-preclinical-experience
#16
Xiang Chen, Ben Zhang, Yufeng Zhu, Hongwen Tan, Xianxian Zhao, Yongwen Qin, Junbo Ge
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is an effective percutaneous treatment for high-risk patients with severe symptomatic aortic stenosis. However, TAVI is rendered less effective in patients with noncalcified aortic valve disease because noncalcified aortic valves lack an anchor site for the implanted stent, causing the stent to relocate to an unexpected position. In this study, we developed an improved TAVI with a snare loop-assisted device, and evaluated the feasibility and safety of this strategy in noncalcified aortic valve disease...
August 2016: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27193508/intraprocedural-balloon-dilation-of-the-direct-flow-medical-transcatheter-aortic-valve-first-united-states-experience
#17
Amar Krishnaswamy, Stephanie Mick, Samir R Kapadia
Optimization of hemodynamics during transcatheter aortic valve replacement (TAVR) using the commercially available balloon expandable and self-expanding valves is often accomplished through post-dilation of the valves' metallic frame. The direct flow medical (DFM) valve is a uniquely designed second-generation TAVR prosthetic without a rigid metallic frame. It is not widely known whether balloon dilation of this valve is beneficial when valve hemodynamics after initial deployment suboptimal due to valve underexpansion...
January 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27192383/transcatheter-aortic-valve-implantation-and-morbidity-and-mortality-related-factors-a-5-year-experience-in-brazil
#18
André Luiz Silveira Souza, Constantino González Salgado, Ricardo Mourilhe-Rocha, Evandro Tinoco Mesquita, Luciana Cristina Lima Correia Lima, Nelson Durval Ferreira Gomes de Mattos, Arnaldo Rabischoffsky, Francisco Eduardo Sampaio Fagundes, Alexandre Siciliano Colafranceschi, Luiz Antonio Ferreira Carvalho
BACKGROUND: Transcatheter aortic valve implantation has become an option for high-surgical-risk patients with aortic valve disease. OBJECTIVE: To evaluate the in-hospital and one-year follow-up outcomes of transcatheter aortic valve implantation. METHODS: Prospective cohort study of transcatheter aortic valve implantation cases from July 2009 to February 2015. Analysis of clinical and procedural variables, correlating them with in-hospital and one-year mortality...
June 2016: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/27059259/impact-of-different-aortic-valve-calcification-patterns-on-the-outcome-of-transcatheter-aortic-valve-implantation-a-finite-element-study
#19
Francesco Sturla, Mattia Ronzoni, Mattia Vitali, Annalisa Dimasi, Riccardo Vismara, Georgia Preston-Maher, Gaetano Burriesci, Emiliano Votta, Alberto Redaelli
Transcatheter aortic valve implantation (TAVI) can treat symptomatic patients with calcific aortic stenosis. However, the severity and distribution of the calcification of valve leaflets can impair the TAVI efficacy. Here we tackle this issue from a biomechanical standpoint, by finite element simulation of a widely adopted balloon-expandable TAVI in three models representing the aortic root with different scenarios of calcific aortic stenosis. We developed a modeling approach realistically accounting for aortic root pressurization and complex anatomy, detailed calcification patterns, and for the actual stent deployment through balloon-expansion...
August 16, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27056763/dysfunction-of-mechanical-mitral-prosthesis-at-33rd-week-of-pregnancy-ecmo-support-as-a-complex-strategy-for-the-mother-and-the-fetus
#20
Gaspare Di Lorenzo, Gennaro Martucci, Sergio Sciacca, Rosalia Longo, Michele Pilato, Antonio Arcadipane
Pregnant women with mechanical prosthetic heart valves have an increased risk of thrombosis and valve malfunctioning. Surgery carries a high risk of mortality for the mother and the fetus. A strategy for effective anticoagulation is crucial for these patients because both oral anticoagulants and heparin are associated with high risks for the mother and the fetus. The treatment of a pregnant woman with thrombosis and valve malfunction is a challenge, even for multidisciplinary teams, as cardiac surgery carries considerable risks...
October 2016: Perfusion
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