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Aortic valve replacement

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https://www.readbyqxmd.com/read/28637199/first-ex-vivo-and-preliminary-sheep-model-results-of-the-new-tribio-aortic-valve-bioprosthesis-in-small-aortic-annuli
#1
Sina Stock, Hans-Hinrich Sievers, Doreen Richardt, Michael Scharfschwerdt
OBJECTIVES: : Small aortic annuli are challenging in aortic valve replacement. Prosthesis-patient mismatch, accompanied by high transvalvular gradients and small orifice area, is an often faced problem impairing postoperative outcome. The new TRIBIO bioprosthesis aims to enable enhanced haemodynamics, being increasingly important with decreasing annular size. This study compares ex vivo hydrodynamics of TRIBIO with 2 established bioprostheses in small annuli at different stroke volumes, simulating 'rest' and 'exercise', and evaluates haemodynamics of TRIBIO in a sheep model...
June 20, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28636721/evaluating-evolving-technologies-in-a-time-of-rapid-change-the-case-of-transcatheter-aortic-valve-replacement
#2
Robert M Califf
No abstract text is available yet for this article.
June 21, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28636718/trends-and-outcomes-of-off-label-use-of-transcatheter-aortic-valve-replacement-insights-from-the-ncdr-sts-acc-tvt-registry
#3
Ravi S Hira, Sreekanth Vemulapalli, Zhuokai Li, James M McCabe, John S Rumsfeld, Samir R Kapadia, Mahboob Alam, Hani Jneid, Creighton Don, Mark Reisman, Salim S Virani, Neal S Kleiman
Importance: Transcatheter aortic valve replacement (TAVR) was approved by the US Food and Drug Administration for severe aortic stenosis in patients who cannot undergo surgery and for patients at high operative risk. Use of TAVR for off-label indications has not been previously reported. Objective: To evaluate patterns and adverse outcomes of off-label use of TAVR in US clinical practice. Design, Setting and Participants: Patients receiving commercially funded TAVR in the United States are included in the Transcatheter Valve Therapy Registry...
June 21, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28636475/surgical-aortic-valve-replacement-for-stenosis-of-tavi-device
#4
M Sooknunden, M A Radermecker, J O Defraigne, Vincent Tchana-Sato
We here report the case of a stenosis of the CoreValve(®) system due to reduced mobility of prosthesis cusps for which a surgical replacement of the aortic valve was proposed. The exact mechanism leading to this impaired mobility of the leaflets is yet to be determined. We also underline the fact a transcatheter aortic valve implantation (TAVI) device can be replaced by a surgical replacement without excessive operative risks despite the patient being initially considered as high-risk.
March 1, 2017: Acta Chirurgica Belgica
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
#5
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/28633278/radiopaque-marker-addition-during-aortic-root-replacement-with-the-use-of-a-freestyle-porcine-bioprosthesis
#6
Olivia M Crowley, John R Doty
Aortic root replacement is indicated for aortic root aneurysm, small aortic root, and most root abscesses. This report describes the placement of a radiopaque marker during aortic root replacement using a Freestyle porcine bioprosthesis. This marker is a useful landmark during fluoroscopy for transcatheter valve-in-valve aortic valve replacement in the event of bioprosthesis degeneration.
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633264/rapidly-progressive-bioprosthetic-aortic-valve-stenosis-due-to-bartonella-species-endocarditis
#7
Kathy Schnitzer, Zafrir Or, Shtiwi Sawaed, Erez Sharoni, Naiel Bisharat
Rapid progression of valvular stenosis in the setting of infective endocarditis is extremely rare. Here we describe a patient with Bartonella endocarditis on a bioprosthetic aortic valve that caused rapidly progressive aortic stenosis without regurgitation. At operation the bioprosthetic valve was severely fibrotic and calcified, with markedly thickened and distorted leaflets and circular partial detachment from the aortic ring. The patient underwent aortic root replacement with aortic bioprosthesis and aortic grafting with reimplantation of the coronary ostia...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633263/structural-valve-deterioration-of-a-subcoronary-implanted-stentless-bioprosthesis-how-to-treat
#8
Eva Karolina Harmel, Lenard Conradi, Ulrich Schäfer, Florian Deuschl, Niklas Schofer, Stefan Blankenberg, Hermann Reichenspurner, Evaldas Girdauskas
We present a case of transcatheter valve-in-valve replacement performed because of structural valve deterioration of a subcoronary implanted stentless aortic bioprosthesis. A 23-mm self-expandable transcatheter heart valve (THV) with supraannular seating was chosen. The procedure was performed with the patient under conscious sedation. After anchoring and partial valve deployment, the patient experienced an acute onset of angina. The angiogram showed left main coronary artery obstruction. Prompt resheathing and retrieval of the THV was performed, and the procedure was aborted...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633252/delayed-management-of-partial-aortic-valve-avulsion-after-transcatheter-aortic-valve-replacement
#9
Dimitri Sherev, Khalid Azizi, Nassir A Azimi, Susan Van Nordheim, Ricardo Moreno-Cabral
We report a case of delayed treatment of a partial aortic valve leaflet avulsion during transcatheter aortic valve replacement (TAVR) and its successful management by a percutaneous snare retrieval technique. Post-TAVR transesophogeal echocardiography showed an avulsed native valve leaflet. We deferred retrieval of the mass with anticoagulant agents. One month later, a 30-mm EN-Snare was used to snare the mass. This case report demonstrates that the management of an avulsed aortic valve leaflet can be safely deferred with the use of an anticoagulant agent...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633216/transatlantic-editorial-on-transcatheter-aortic-valve-replacement
#10
EDITORIAL
Vinod H Thourani, Michael A Borger, David Holmes, Hersh Maniar, Fausto Pinto, Craig Miller, Josep Rodés-Cabau, Friedrich-Wilhelm Mohr, Holger Schröfel, Neil E Moat, Friedhelm Beyersdorf, G Alexander Patterson, Richard Weisel
No abstract text is available yet for this article.
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633212/transatlantic-editorial-on-transcatheter-aortic-valve-replacement
#11
EDITORIAL
Vinod H Thourani, Michael A Borger, David Holmes, Hersh Maniar, Fausto Pinto, Craig Miller, Josep Rodés-Cabau, Friedrich-Wilhelm Mohr, Holger Schröfel, Neil E Moat, Friedhelm Beyersdorf, G Alexander Patterson, Richard Weisel
No abstract text is available yet for this article.
July 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28631398/transcatheter-aortic-valve-replacement-in-a-patient-with-werner-syndrome
#12
Kenta Masada, Toru Kuratani, Koichi Maeda, Kei Torikai, Yoshiki Sawa
No abstract text is available yet for this article.
June 20, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28625366/feasibility-of-transcatheter-aortic-valve-replacement-in-low-risk-patients-with-symptomatic-severe-aortic-stenosis-rationale-and-design-of-the-low-risk-tavr-lrt-study
#13
Toby Rogers, Rebecca Torguson, Roshni Bastian, Paul Corso, Ron Waksman
BACKGROUND: Safety and effectiveness of transcatheter aortic valve replacement (TAVR) in low-risk patients with symptomatic severe aortic stenosis have not yet been established. HYPOTHESIS: Transcatheter aortic valve replacement is feasible in patients with symptomatic severe aortic stenosis and low risk for surgical aortic valve replacement. DESIGN: The LRT study is the first US Food and Drug Administration-approved Investigational Device Exemption prospective multicenter feasibility trial of TAVR in low-risk patients...
July 2017: American Heart Journal
https://www.readbyqxmd.com/read/28623503/investigating-the-suitability-of-carbon-nanotube-reinforced-polymer-in-transcatheter-valve-applications
#14
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/28623173/outcomes-of-transcatheter-and-surgical-aortic-valve-replacement-in-patients-on-maintenance-dialysis
#15
Fahad Alqahtani, Sami Aljohani, Khaled Boobes, Elad Maor, Assem Sherieh, Charanjit S Rihal, David R Holmes, Mohamad Alkhouli
BACKGROUND: the introduction of transcatheter aortic valve replacement (TAVR) expanded definitive therapy of aortic stenosis to many high-risk patients, but it has not been fully evaluated in the dialysis population. OBJECTIVES: We aimed to evaluate the current trend and in-hospital outcome of Surgical aortic valve replacement (SAVR) and TAVR in the dialysis population. METHODS: Severe aortic stenosis patients on maintenance dialysis who underwent SAVR or TAVR in the Nationwide Inpatient Sample database (NIS) from January 1, 2005, through December 31, 2014, were included in our comparative analysis...
June 13, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28623117/open-heart-surgery-does-not-increase-the-incidence-of-ipsilateral-ischemic-stroke-in-patients-with-asymptomatic-severe-carotid-stenosis
#16
John E Castaldo, Hussam A Yacoub, Yuebing Li, Hope Kincaid, Donna Jenny
BACKGROUND AND PURPOSE: We evaluated the incidence of perioperative stroke following the institution's 2007 practice change of discontinuing combined carotid endarterectomy and open heart surgery (OHS) for patients with severe carotid stenosis. METHODS: In this retrospective cohort study, we compared 113 patients undergoing coronary artery bypass grafting, aortic valve replacement, or both from 2007 to 2011 with data collected from 2001 to 2006 from a similar group of patients...
June 13, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28622944/effect-of-ascending-aortic-dimension-on-acute-procedural-success-following-self-expanding-transcatheter-aortic-valve-replacement-a-multicenter-retrospective-analysis
#17
Yoshio Maeno, Sung-Han Yoon, Yigal Abramowitz, Yusuke Watanabe, Hasan Jilaihawi, Mao-Shin Lin, Jason Chan, Rahul Sharma, Hideyuki Kawashima, Sharjeel Israr, Hiroyuki Kawamori, Masaki Miyasaka, Tanya Rami, Yoshio Kazuno, Geeteshwar Mangat, Mohammad Kashif, Tarun Chakravarty, Hsien-Li Kao, Michael Kang-Yin Lee, Mamoo Nakamura, Ken Kozuma, Wen Cheng, Raj R Makkar
AIMS: Self-expanding (SE) valves are characterized with long stent frame design and the radial force of the device exists both in the inflow and outflow level. Therefore, we hypothesized that device success of SE-valves may be influenced by ascending aortic dimensions (AAD). The aim of this study was to determine the influence of AAD on acute device success rates following SE transcatheter aortic valve replacement (TAVR). METHODS & RESULTS: In 4 centers in the United States and Asia, 214 consecutive patients underwent SE-TAVR...
June 3, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28618423/long-term-clinical-outcomes-of-the-carpentier-edwards-perimount-pericardial-bioprosthesis-in-chinese-patients-with-single-or-multiple-valve-replacement-in-aortic-mitral-or-tricuspid-positions
#18
Huiming Guo, Cong Lu, Huanlei Huang, Bin Xie, Jian Liu, Shaoyi Zheng, Ruixin Fan, Jimei Chen, Jian Zhuang
OBJECTIVES: To report the safety and efficacy results of a 9- to 15-year follow-up investigation among patients who had received Carpentier-Edwards Perimount (CE-P) bovine pericardial bioprostheses (Edwards Lifesciences, Irvine, CA, USA) for valve replacement. METHODS: This retrospective study investigated freedom from structural valve deterioration (SVD) as well as survival and reoperation among different age and etiology groups in patients who were implanted with a CE-P bioprosthesis at Guangdong General Hospital between 2001 and 2007...
June 16, 2017: Cardiology
https://www.readbyqxmd.com/read/28616353/double-pseudoaneurysm-recurrent-subvalvular-aortic-membrane-and-small-left-ventricular-outflow-tract-in-the-same-patient-who-dares
#19
Rocío Díaz, Daniel Hernandez-Vaquero, Rubén Álvarez-Cabo, Isaac Pascual, Cecilia Corros, Alberto Alperi, Jose Rozado, Jacobo Silva, César Morís
Patients with pseudoaneurysm in the left ventricular outflow tract (LVOT) commonly present vague and nonspecific symptoms making the diagnosis difficult. We present the case of a 37-year-old patient with two subvalvular pseudoaneurysms in whom a combined resection surgery, enlargement of the LVOT, aortic valve replacement (AVR) and aortic root replacement were performed using the technique of Cabrol.
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28616345/wrapping-of-the-ascending-aorta-revisited-is-there-any-role-left-for-conservative-treatment-of-ascending-aortic-aneurysm
#20
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
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