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https://www.readbyqxmd.com/read/28935328/valve-in-valve-transcatheter-aortic-valve-implantation-a-novel-approach-to-treat-paravalvular-leak
#1
Pranav Loyalka, Kelsey B Montgomery, Tom C Nguyen, Richard W Smalling, Melissa Howe, Keshava Rajagopal
Enlarging or "cracking" a surgical stented bioprosthetic valve during valve-in-valve transcatheter aortic valve implantation (TAVI) increases orifice area, reducing transvalvular energy losses. We demonstrate that TAVI with valve cracking can be used to treat paravalvular leak (PVL) while providing optimal aortic valve physiology. A 61-year-old woman with a history of aortic valve replacement with a stented bioprosthesis presented with heart failure. Transthoracic echocardiography revealed severe prosthetic aortic valve stenosis with PVL and severe regurgitation...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28888221/transcatheter-aortic-valve-in-valve-implantation-of-a-corevalve-in-a-jenavalve-prosthesis-a-case-report
#2
Shahram Lotfi, Michael Becker, Ajay Moza, Rüdiger Autschbach, Nikolaus Marx, Jörg Schröder
BACKGROUND: Transcatheter aortic valve implantation has become an accepted treatment modality for inoperable or high-risk surgical patients with symptomatic severe aortic stenosis. CASE PRESENTATION: We report the case of a 70-year-old white man who was treated for severe symptomatic aortic regurgitation using transcatheter aortic valve implantation from the apical approach. Because of recurrent cardiac decompensation 4 weeks after implantation he underwent the implantation of a left ventricular assist device system...
September 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28867011/tavr-with-mechanically-expandable-prostheses-is-balloon-aortic-valvuloplasty-really-necessary
#3
Giuseppe Tarantini, Luca Nai Fovino, Paola Tellaroli, Paola Purita, Giulia Masiero, Massimo Napodano, Chiara Fraccaro, Gino Gerosa, Sabino Iliceto
BACKGROUND: The fully retrievable and repositionable Lotus Valve System uses a unique mechanical expansion mechanism. Balloon aortic valvuloplasty (BAV) is recommended before valve deployment. There are no studies focusing on feasibility and efficacy of Lotus Valve implantation without previous BAV. METHODS AND RESULTS: Thirty consecutive patients (63.3% female; mean age, 80±6.2years) underwent transcatheter aortic valve replacement (TAVR) with the Lotus Valve without preparatory BAV...
November 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28853220/hemodynamic-evaluation-of-a-biological-and-mechanical-aortic-valve-prosthesis-using-patient-specific-mri-based-cfd
#4
Florian Hellmeier, Sarah Nordmeyer, Pavlo Yevtushenko, Jan Bruening, Felix Berger, Titus Kuehne, Leonid Goubergrits, Marcus Kelm
Modeling different treatment options before a procedure is performed is a promising approach for surgical decision making and patient care in heart valve disease. This study investigated the hemodynamic impact of different prostheses through patient-specific MRI-based CFD simulations. Ten time-resolved MRI data sets with and without velocity encoding were obtained to reconstruct the aorta and set hemodynamic boundary conditions for simulations. Aortic hemodynamics after virtual valve replacement with a biological and mechanical valve prosthesis were investigated...
August 29, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28846524/outcome-of-patients-with-low-flow-low-gradient-severe-aortic-stenosis-who-underwent-aortic-valve-replacement
#5
Xing Li Fan, Jiajun Zhang, Chong Wang, Hongmei Chong, Guanxin Zhang, Qing Xue, Yangfeng Tang, Lin Han
It is well-documented that stroke volume and gradient are indexed to classify patients with aortic stenosis into several phenotypes. The purpose of the present study was to estimate the impact of stroke volume and gradient on the clinical outcome of patients with AS who have undergone aortic valve replacement. Methods: A total of 154 consecutive patients were studied. They all had severe aortic stenosis (aortic valve area [AVA] ≤ 1 cm², left ventricular ejection fraction [LVEF] ≥ 50%) and underwent aortic valve replacement (AVR) from January 1, 2004 to December 31, 2010...
July 20, 2017: Heart Surgery Forum
https://www.readbyqxmd.com/read/28838477/transcatheter-mitral-valve-implantation-using-the-highlife-system
#6
Marco Barbanti, Nicolò Piazza, Sarah Mangiafico, Jean Buithieu, Sabine Bleiziffer, Giuseppe Ronsivalle, Salvatore Scandura, Angelo Giuffrida, Antonio Popolo Rubbio, Massimo Mazzamuto, Carmelo Sgroi, Rüdiger Lange, Corrado Tamburino
OBJECTIVES: This study is the first report of 2 cases of HighLife (HighLife, Paris, France) implantation in humans. BACKGROUND: Transcatheter mitral valve implantation represents a promising approach to treating mitral regurgitation in patients at increased risk of perioperative mortality. The HighLife transcatheter mitral valve is a 2-component system. The valve is implanted in the mitral position and is anchored by interacting and then reaching an equilibrium position with a previously positioned subannular implant...
August 28, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28826988/transapical-transcatheter-aortic-valve-implantation-using-a-new-tavi-system-for-high-risk-patients-with-severe-aortic-stenosis
#7
Xu Fei, Yacine Elhmidi, Bengui Zhang, Hong Tang, Da Zhu, Yucheng Chen, Yingqiang Guo
BACKGROUND: To evaluate the safety and efficacy of transcatheter aortic valve implantation (TAVI) for high-risk patients with aortic stenosis using the J-Valve system. METHODS: 30 high-risk patients with severe AS underwent TAVI procedure were enrolled with mean age 74.5±4.5 years and mean logistic Euro-SCORE-I of 28.4±9.6%. All patients were followed up for six months. Outcomes were analyzed in accordance with the updated standardised endpoints defined by the Valve Academic Research Consortium -2 (VRAC-2) criteria...
August 8, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28822667/doppler-parameters-derived-from-transthoracic-echocardiography-accurately-detect-bioprosthetic-mitral-valve-dysfunction
#8
Ryan J Spencer, Ken G Gin, Michael Y C Tsang, Teresa S M Tsang, Parvathy Nair, Pui K Lee, John Jue
BACKGROUND: Detecting bioprosthetic mitral valve dysfunction on transthoracic echocardiography can be challenging because of acoustic shadowing of regurgitant jets and a wide normal range of transvalvular gradients. Several studies in mechanical mitral valves have demonstrated the utility of the transthoracically derived parameters E (peak early mitral inflow velocity), pressure half-time, and the ratio of mitral inflow velocity-time integral (VTIMV) to left ventricular outflow tract velocity-time integral (VTILVOT) in detecting significant prosthetic dysfunction...
August 16, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28805033/balloon-aortic-valvuloplasty-in-the-tavr-era-not-so-new-but-definitely-improved
#9
EDITORIAL
Ted Feldman, Mayra Guerrero
BAV in the TAVR era is not well studied BAV resulted in improvements in aortic valve area and transvalvular pressure gradient, and in patients with impaired left ventricle function, ejection fraction improved. These improvements diminished over time, but at one year were still improved compared to baseline. BAV resulted in changes of planned therapy more than half of the patients treated as bridge for TAVR did not ultimately undergo TAVR twice as many planned as bridge for surgical valve replacement actually had surgical valve replacement...
August 1, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28799521/transcatheter-mitral-valve-replacement-long-term-outcomes-of-first-in-man-experience-with-an-apically-tethered-device-a-case-series-from-a-single-centre
#10
Alison Duncan, Anan Daqa, James Yeh, Simon Davies, Anselm Uebing, Cesare Quarto, Neil Moat
AIMS: Transcatheter mitral valve replacement (TMVR) is a novel technique for treating mitral regurgitation. We report 18-month/2-year outcomes of the 5 first-in-man patients undergoing chronic TMVR with the Tendyne device. METHODS AND RESULTS: Five patients (STS score 14%-23%) underwent TMVR using a Tendyne system under compassionate use at a single centre. 1 patient (who was noncompliant with anti-coagulation) died 9 months after TMVR following a cerebrovascular accident...
August 13, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28799252/the-impact-of-global-left-ventricular-afterload-on-left-ventricular-reverse-remodeling-after-aortic-valve-replacement
#11
Hisato Ito, Toru Mizumoto, Yu Shomura, Yasuhiro Sawada, Ko Kajiyama, Hideto Shimpo
BACKGROUND: Conventional indices such as prosthetic valve effective orifice area (EOA) or transvalvular pressure gradients (TPG) may be unreliable in predicting left ventricular (LV) reverse remodeling after aortic valve replacement (AVR). We hypothesized that the global LV afterload, including valvular and arterial impedance, could influence LV reverse remodeling after AVR. METHODS: Twenty-three consecutive aortic-stenosis patients (mean age, 76 ± 6.4 years) underwent isolated AVR using contemporary externally wrapped pericardial valves (19 mm, 10 patients; 21 mm 11; 23 mm, 2)...
August 11, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28797415/low-transvalvular-flow-and-prognosis-in%C3%A2-the-seas-trial
#12
EDITORIAL
Paul A Grayburn
No abstract text is available yet for this article.
August 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28764221/maximal-aortic-valve-cusp-separation-and-severity-of-aortic-stenosis
#13
K Jayaprakash, V P Dilu, Raju George
INTRODUCTION: An integrated approach that incorporates two dimensional, M mode and Doppler echocardiographic evaluation has become the standard means for accurate quantification of severity of valvular aortic stenosis. Maximal separation of the aortic valve cusps during systole has been shown to correlate well with the severity of aortic stenosis measured by other echocardiographic parameters. AIM: To study the correlation between Maximal Aortic valve Cusp Separation (MACS) and severity of aortic valve stenosis and to find cut-off values of MACS for detecting severe and mild aortic stenosis...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28706126/transfemoral-transcatheter-aortic-valve-in-valve-implantation-for-aortic-valve-bioprosthesis-failure-with-the-fully-repositionable-and-retrievable-lotus-valve-a-single-center-experience
#14
Neil Ruparelia, Katharine Thomas, James D Newton, Kate Grebenik, Amar Keiralla, George Krasopoulos, Rana Sayeed, Adrian P Banning, Rajesh K Kharbanda
OBJECTIVE: To report a first case series of the Lotus valve (Boston Scientific) for the treatment of surgical aortic bioprosthesis failure. BACKGROUND: Valve-in-valve (VIV) transcatheter aortic valve implantation (TAVI) is an established management option for surgical aortic bioprosthesis failure. Although TAVI has proven efficacious, complications relating to suboptimal valve implantation have been reported in approximately 5% of patients. The Lotus valve is fully repositionable and retrievable, and therefore enables complete assessment of valve function prior to definitive deployment...
July 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28698291/bioprosthetic-valve-fracture-improves-the-hemodynamic-results-of-valve-in-valve-transcatheter-aortic-valve-replacement
#15
Adnan K Chhatriwalla, Keith B Allen, John T Saxon, David J Cohen, Sanjeev Aggarwal, Anthony J Hart, Suzanne J Baron, Danny Dvir, A Michael Borkon
BACKGROUND: Valve-in-valve (VIV) transcatheter aortic valve replacement (TAVR) may be less effective in small surgical valves because of patient/prosthesis mismatch. Bioprosthetic valve fracture (BVF) using a high-pressure balloon can be performed to facilitate VIV TAVR. METHODS AND RESULTS: We report data from 20 consecutive clinical cases in which BVF was successfully performed before or after VIV TAVR by inflation of a high-pressure balloon positioned across the valve ring during rapid ventricular pacing...
July 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28697003/the-respect-rather-than-resect-principle-in-mitral-valve-repair-the-lateral-dislocation-of-the-p2-technique
#16
Marco Zanobini, Gabriella Ricciardi, Francesco Liborio Mammana, Samer Kassem, Paolo Poggio, Alessandro Di Minno, L Cavallotti, Matteo Saccocci
BACKGROUND: Leaflet resection represents the reference standard for surgical treatment of mitral valve (MV) regurgitation. New approaches recently proposed place emphasis on respecting, rather than resecting, the leaflet tissue to avoid the drawbacks of the 'resection' approach. OBJECTIVES: The lateral dislocation of mid portion of mitral posterior leaflet (P2) technique for MV repair is a nonresectional technique in which the prolapsed P2 segment is sutured to normal P1 segment...
September 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28687561/impact-of-vascular-hemodynamics-on-aortic-stenosis-evaluation-new-insights-into-the-pathophysiology-of-normal-flow-small-aortic-valve-area-low-gradient-pattern
#17
Nancy Côté, Louis Simard, Anne-Sophie Zenses, Lionel Tastet, Mylène Shen, Marine Clisson, Marie-Annick Clavel
BACKGROUND: About 50% of normal-flow/low-gradient patients (ie, low mean gradient [MG] or peak aortic jet velocity and small aortic valve area) have severe aortic valve calcification as measured by computed tomography. However, they are considered to have moderate aortic stenosis (AS) in current American College of Cardiology/American Heart Association guidelines. The objective was thus to evaluate the effect of hypertension and reduced arterial compliance (rAC) on MG and Vpeak measurements...
July 7, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28655156/comparison-of-latest-generation-transfemoral-self-expandable-and-balloon-expandable-transcatheter-heart-valves
#18
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/28637199/first-ex-vivo-and-preliminary-sheep-model-results-of-the-new-tribio-aortic-valve-bioprosthesis-in-small-aortic-annuli
#19
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/28619122/long-term-results-of-percutaneous-balloon-valvuloplasty-in-neonatal-critical-pulmonary-valve-stenosis-a-20-year-single-centre-experience
#20
Petra Loureiro, Barbara Cardoso, Inês B Gomes, José F Martins, Fátima F Pinto
Introduction Percutaneous balloon valvuloplasty is the primary treatment for critical pulmonary valve stenosis in neonates. Thus far, a few studies have reported long-term results of this technique in neonatal critical pulmonary valve stenosis. METHODS: We carried out a retrospective study of all consecutive newborns with critical pulmonary valve stenosis subjected to percutaneous balloon valvuloplasty at a single centre, between 1994 and 2014, to assess its immediate and long-term safety and efficacy...
September 2017: Cardiology in the Young
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