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Patient Prosthesis mismatch

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https://www.readbyqxmd.com/read/28923785/transcatheter-mitral-valve-replacement-of-navigate-bioprosthesis-in-a-preclinical-model
#1
Haytham Elgharably, Jose L Navia, Cristian Baeza, Gabriel Maluenda, Samir Kapadia, Jerzy Sadowski, Krzysztof Bartuś, Cesare Beghi, Kalathi Thyagarajan, Ryan Bertwell, Rodolfo C Quijano
AIMS: To test the feasibility of trans-catheter mitral valve implantation of the NaviGate device in acute and chronic preclinical models. METHODS AND RESULTS: We evaluated the NaviGate valved stent implantation in the mitral position in an acute swine model (n=24, ≤ 5 days) through three different approaches: trans-atrial, trans-apical, and trans-septal, and in a chronic swine model (n=12, >10 days) through a trans-atrial approach. The NaviGate implantation procedures were successful in 83% of the acute model studies (n=20) and 83% of the chronic model studies (n=10)...
September 19, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28880467/patient-prosthetic-mismatch-following-aortic-valve-replacement-it-may-not-all-be-due-to-the-prosthesis
#2
Harold L Lazar
No abstract text is available yet for this article.
September 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28799113/angles-between-the-aortic-root-and-the-left-ventricle-assessed-by-mdct-are-associated-with-the-risk-of-aortic-regurgitation-after-transcatheter-aortic-valve-replacement
#3
Vincent Roule, Alexandre Placente, Rémi Sabatier, Mathieu Bignon, Vladimir Saplacan, Calin Ivascau, Paul Milliez, Farzin Beygui
OBJECTIVES: To evaluate the impact of the angles quantified by multidetector computed tomography (MDCT) between the ascending aorta's long axis and, the left ventricular inflow long axis (LVLA), or the left ventricule outflow tract long axis, and the occurrence of post-transcatheter aortic valve replacement (TAVR) aortic regurgitation (AR). METHODS: We prospectively included 136 consecutive patients who underwent a transfemoral TAVR with a preoperative MDCT. The groups were defined according to AR <2 or ≥2 assessed by echocardiography at 1 month...
August 10, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28792140/effect-of-patient-prosthesis-mismatch-in-aortic-position-on-late-onset-tricuspid-regurgitation-and-clinical-outcomes-after-double-valve-replacement
#4
Seung Hyun Lee, Young Nam Youn, Byung Chul Chang, Hyun Chel Joo, Sak Lee, Kyung Jong Yoo
PURPOSE: Significant late-onset tricuspid regurgitation (TR) is unfortunately common after double valve replacement (DVR); however, its underlying factors remain undefined. We evaluated the effect of aortic patient-prosthesis mismatch (PPM) on late-onset TR and clinical outcomes after DVR. MATERIALS AND METHODS: Of the 2392 consecutive patients who underwent aortic valve replacement between January 1990 and May 2014 at our institution, we retrospectively studied 462 patients who underwent DVR (excluding concomitant tricuspid valvular annuloplasty or replacement)...
September 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28739246/three-dimensional-measurement-of-aortic-annulus-dimensions-using-area-or-circumference-for-transcatheter-aortic-valve-replacement-valve-sizing-does-it-make-a-difference
#5
Alexandros Papachristidis, Michael Papitsas, Damian Roper, Yanzhong Wang, Rafal Dworakowski, Jonathan Byrne, Olaf Wendler, Philip MacCarthy, Mark J Monaghan
BACKGROUND: The use of transcatheter aortic valve replacement (TAVR) is increasing worldwide. We present our 6-year experience using three-dimensional (3D) transesophageal echocardiography (TEE) and investigate whether different sizing methods of the aortic annulus lead to different prosthesis size that may impact outcome. METHODS: We investigated 262 patients who underwent TAVR and had 3D TEE data sets of the aortic annulus. We have used the area-derived diameter (Darea = 2(area/π)) and the circumference-derived diameter (Dcirc = Circumference/π) to size the prosthesis in separate populations in different time periods...
September 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28734891/ct-defined-prosthesis-patient-mismatch-downgrades-frequency-and-severity-and%C3%A2-demonstrates-no-association-with-adverse-outcomes-after-tavr
#6
John Mooney, Stephanie L Sellers, Phillip Blanke, Philippe Pibarot, Rebecca T Hahn, Danny Dvir, Pamela S Douglas, Neil J Weissman, Susheel K Kodali, Vinod H Thourani, Hasan Jilaihawi, Omar Khalique, Craig R Smith, Shaw Hua Kueh, Mickael Ohana, Romi Grover, Christopher Naoum, Aaron Crowley, Wael A Jaber, Maria C Alu, Rupa Parvataneni, Michael Mack, John G Webb, Martin B Leon, Jonathon A Leipsic
OBJECTIVES: This study sought to determine if indexed effective orifice area (EOAi), using left ventricular outflow tract measured from computed tomography (EOAiCT), reclassified prosthesis-patient mismatch (PPM) compared with conventional echocardiogram-defined measurements (EOAiTTE). BACKGROUND: PPM does not predict mortality following transcatheter aortic valve replacement (TAVR). However, it is unknown if the EOAiCT of the left ventricular outflow tract improves risk stratification...
July 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28734890/hybrid-imaging-to-assess-prosthesis-patient-mismatch-after-tavr-in-search-of-validation
#7
EDITORIAL
Sorin V Pislaru, Vuyisile T Nkomo
No abstract text is available yet for this article.
July 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28698291/bioprosthetic-valve-fracture-improves-the-hemodynamic-results-of-valve-in-valve-transcatheter-aortic-valve-replacement
#8
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/28637199/first-ex-vivo-and-preliminary-sheep-model-results-of-the-new-tribio-aortic-valve-bioprosthesis-in-small-aortic-annuli
#9
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/28606674/transcatheter-aortic-valve-implantation-in-patients-with-an-extremely-small-native-aortic-annulus-the-ocean-tavi-registry
#10
Fumiaki Yashima, Masanori Yamamoto, Makoto Tanaka, Ryo Yanagisawa, Takahide Arai, Hideyuki Shimizu, Keiichi Fukuda, Yusuke Watanabe, Toru Naganuma, Shinichi Shirai, Motoharu Araki, Norio Tada, Futoshi Yamanaka, Kentaro Hayashida
BACKGROUND: Transcatheter aortic valve implantation (TAVI) has been reported to be advantageous over surgical aortic valve replacement owing to the low incidence of prosthesis-patient mismatch (PPM) and large effective orifice area (EOA). However, data on TAVI for extremely small annuli are limited. The present study aimed to compare post-procedural hemodynamics and morphology between 20-mm and 23-mm Sapien XT (SXT) transcatheter heart valves (THVs) with extremely small annuli (<314mm(2))...
August 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28598875/early-hemodynamic-results-in-patients-with-small-aortic-annulus-after-aortic-valve-replacement
#11
Pierre Olivier Dionne, Frédéric Poulin, Denis Bouchard, Philippe Généreux, Reda Ibrahim, Raymond Cartier, Yoan Lamarche, Philippe Demers
OBJECTIVE: Patients with a small aortic annulus (≤21 mm) have an increased risk of patient-prosthesis mismatch after valve replacement. The aim of this study was to compare the early hemodynamic performance of the balloon-expandable transaortic valve implantation Edwards system (SAPIEN) and the sutureless Perceval prostheses. METHODS: Fifty patients underwent transcatheter aortic valve implantation, and 113 patients underwent sutureless aortic valve replacement...
July 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28591821/effect-of-prosthesis-patient-mismatch-in-mitral-position-on-pulmonary-hypertension%C3%A2
#12
Ganesh Kumar K Ammannaya, Prashant Mishra, Jayant V Khandekar, Chandan Kumar Ray Mohapatra, Harsh S Seth, Chaitanya Raut, Vaibhav Shah, Jaskaran S Saini
OBJECTIVES: Pulmonary arterial hypertension (PAH) is associated with poor outcome after mitral valve replacement (MVR). We proposed to evaluate the effect of valve prosthesis patient mismatch (PPM) on pulmonary arterial (PA) pressure following MVR. METHODS: Five hundred patients who have undergone MVR were studied retrospectively. Postoperative PA systolic pressure (PASP) measured 6 months postoperatively by Doppler echocardiography was compared with preoperative values...
June 7, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28570525/full-root-aortic-valve-replacement-by-stentless-aortic-xenografts-in-patients-with-small-aortic-roots
#13
Reza Tavakoli, Peiman Jamshidi, Max Gassmann
In patients with small aortic roots who need an aortic valve replacement with biological valve substitutes, the implantation of the stented pericardial valve might not meet the functional needs. The implantation of a too-small stented pericardial valve, leading to an effective orifice area indexed to a body surface area less than 0.85 cm(2)/m(2), is regarded as prosthesis-patient mismatch (PPM). A PPM negatively affects the regression of left ventricular hypertrophy and thus the normalization of left ventricular function and the alleviation of symptoms...
May 21, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28545592/impact-of-prosthesis-patient-mismatch-on-short-term-outcomes-after-aortic-valve-replacement-a-retrospective-analysis-in-east-china
#14
Lei Guo, Junnan Zheng, Liangwei Chen, Renyuan Li, Liang Ma, Yiming Ni, Haige Zhao
BACKGROUND: Prosthesis-patient mismatch (PPM) may affect the clinical outcomes of patients undergoing aortic valve replacement (AVR). We aimed to determine the incidence of PPM, its effect on short-term mortality, and the factors contributing to PPM in China. METHODS: We retrospectively examined all consecutive patients with isolated or concomitant AVR at our hospital between January 1, 2013 and December 31, 2015. PPM was defined as an effective orifice area index (EOAi) of ≤ 0...
May 25, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28540078/use-of-multidetector-row-computed-tomography-scan-to-detect-pannus-formation-in-prosthetic-mechanical-aortic-valves
#15
REVIEW
Mohamed A Aladmawi, Claudio Pragliola, Olga Vriz, Domenico Galzerano
Obstruction of a mechanical aortic valve by pannus formation at the subvalvular level is a major long-term complication of aortic valve replacement (AVR). In fact, pannus is sometime difficult to differentiate from patient-prosthesis mismatch or valve thrombosis. In most cases cine-angiography and echocardiography, either transthoracic or transesophageal, cannot correctly visualize the complication when the leaflets show a normal mobility. Recent technological refinements made this difficult diagnosis possible by ECG-gated computed tomography (CT) scan which shows adequate images in 90% of the cases and can differentiate pannus from fresh and organized thrombus...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28536830/transcatheter-aortic-valve-implantation-in-patients-on-corticosteroid-therapy
#16
Ryosuke Higuchi, Tetsuya Tobaru, Kenichi Hagiya, Mike Saji, Keitaro Mahara, Itaru Takamisawa, Jun Shimizu, Shuichiro Takanashi, Morimasa Takayama
Transcatheter aortic valve implantation (TAVI) is recommended for patients who are inoperable or at high risk for surgical aortic valve replacement (SAVR). Corticosteroid therapy is considered to be a risk factor for SAVR, but there is a paucity of information about TAVI in patients taking corticosteroids. The aim of this study is to elucidate the outcome of TAVI in patients on chronic corticosteroid therapy, compared with SAVR. We retrospectively analyzed patients on corticosteroid therapy who underwent TAVI (n = 21) or SAVR (n = 30) for severe aortic stenosis in Sakakibara Heart Institute...
May 23, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28521921/1-year-results-in-patients-undergoing-transcatheter-aortic-valve-replacement-with-failed-surgical-bioprostheses
#17
G Michael Deeb, Stanley J Chetcuti, Michael J Reardon, Himanshu J Patel, P Michael Grossman, Theodore Schreiber, John K Forrest, Tanvir K Bajwa, Daniel P O'Hair, George Petrossian, Newell Robinson, Stanley Katz, Alan Hartman, Harold L Dauerman, Joseph Schmoker, Kamal Khabbaz, Daniel R Watson, Steven J Yakubov, Jae K Oh, Shuzhen Li, Neal S Kleiman, David H Adams, Jeffrey J Popma
OBJECTIVES: This study evaluated the safety and effectiveness of self-expanding transcatheter aortic valve replacement (TAVR) in patients with surgical valve failure (SVF). BACKGROUND: Self-expanding TAVR is superior to medical therapy for patients with severe native aortic valve stenosis at increased surgical risk. METHODS: The CoreValve U.S. Expanded Use Study was a prospective, nonrandomized study that enrolled 233 patients with symptomatic SVF who were deemed unsuitable for reoperation...
May 22, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28465144/real-structural-valve-deterioration-of-the-mitroflow-aortic-prosthesis-competing-risk-analysis
#18
Rocío Díaz, Daniel Hernández-Vaquero, Jacobo Silva, Isaac Pascual, Jesús M de la Hera, Víctor León, María Martín, Vicente Barriales, Santiago Colunga, Raquel Del Valle, César Morís
INTRODUCTION AND OBJECTIVES: The Mitroflow aortic prosthesis is a bovine pericardial bioprosthesis specially designed to increase the valve area in relation to its size. There is controversy regarding the pattern of structural valve deterioration (SVD). Our aim was to determine the cumulative incidence of SVD, risk factors influencing its occurrence, and its impact on mortality. METHODS: A total of 1028 patients were clinically and echocardiographically followed up...
May 2, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28430883/ten-year-results-of-aortic-valve-replacement-with-first-generation-mitroflow-bioprosthesis-is-early-degeneration-a-structural-or-a-technical-issue
#19
Liesbeth Lootens, Jonas Verbeke, Thomas Martens, Tine Philipsen, Frank Caes, Yves Van Belleghem, Guido Van Nooten, Katrien François, Dirk De Bacquer, Thierry Bove
OBJECTIVES: Concerns have been raised about the durability of the first-generation Mitroflow aortic bioprosthesis (model 12 A-LX) due to the lack of anticalcification treatment. This study reflects a 10-year experience with this prosthesis for aortic valve replacement. METHODS: From June 2003 to May 2012, the Mitroflow prosthesis was used for aortic valve replacement in 510 patients, of whom only 467 with complete clinical follow-up were included for analysis. Study end-points were survival and incidence of structural valve degeneration (SVD)...
August 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28393786/prosthesis-patient-mismatch-what-cardiac-anesthesiologists-need-to-know
#20
REVIEW
Kathirvel Subramaniam, Soheyla Nazarnia
Prosthesis-patient Mismatch (PPM) is not uncommon with an incidence reported up to 70% after aortic valve (AV) replacement. Severe forms of PPM are less common (up to 20%); PPM can lead to increased short- and long-term morbidity and mortality. It is important to discriminate PPM from other forms of prosthetic valve dysfunction. Sometimes, prosthetic valve degenerative disease may coexist with PPM. Echocardiography plays an important role in the prevention and diagnosis of PPM. Preemptive strategies to prevent PPM include insertion of newer generation prosthetic valves with better hemodynamic characteristics, stentless prosthesis, aortic root enlargement to insert a larger prosthesis, aortic homograft, and transcutaneous AV implantation...
April 2017: Annals of Cardiac Anaesthesia
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