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3D transesophageal mitral valve

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https://www.readbyqxmd.com/read/28414667/the-mysterious-case-of-dyspnea
#1
S Saad, N Turaga, J Grant, N Jain
INTRODUCTION: Dehiscence of a mitral valve annuloplasty ring is a rare occurrence that often manifests as mitral regurgitation and heart failure. We present a case of mitral ring dehiscence which was initially unrecognized by standard 2-dimensional transthoracic echocardiography (2D TTE); and 2-dimensional transesophageal echocardiography (2D TEE);. CASE: A 65-year-old woman was referred to Cardiology clinic for evaluation of dyspnea. Her history included tobacco abuse, atrial fibrillation status post pulmonary vein isolation, nonischemic cardiomyopathy, and prior mitral valve repair with annuloplasty ring for rheumatic valvular disease...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28398019/epidemiology-anatomy-pathophysiology-and-clinical-evaluation-of-functional-tricuspid-regurgitation
#2
Yee-Ping Sun, Patrick T O' Gara
Tricuspid regurgitation (TR) is commonly encountered in the management of patients with a variety of cardiovascular diseases. Primary TR is the result of structural abnormalities of the valve or chordal attachments whereas functional TR results from alterations in right ventricular (RV) or right atrial (RA) size, shape or function. The vast majority of TR cases seen in practice are functional in nature and usually results from left-sided heart disease (e.g., mitral valve disease, left ventricular (LV) systolic dysfunction) and/or pulmonary vascular disease, though it also manifests in the presence of isolated chronic atrial fibrillation (AF)...
April 10, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28345211/3d-echocardiographic-analysis-of-aortic-annulus-for-transcatheter-aortic-valve-replacement-using-novel-aortic-valve-quantification-software-comparison-with-computed-tomography
#3
Anuj Mediratta, Karima Addetia, Diego Medvedofsky, Robert J Schneider, Eric Kruse, Atman P Shah, Sandeep Nathan, Jonathan D Paul, John E Blair, Takeyoshi Ota, Husam H Balkhy, Amit R Patel, Victor Mor-Avi, Roberto M Lang
BACKGROUND: With the increasing use of transcatheter aortic valve replacement (TAVR) in patients with aortic stenosis (AS), computed tomography (CT) remains the standard for annulus sizing. However, 3D transesophageal echocardiography (TEE) has been an alternative in patients with contraindications to CT. We sought to (1) test the feasibility, accuracy, and reproducibility of prototype 3DTEE analysis software (Philips) for aortic annular measurements and (2) compare the new approach to the existing echocardiographic techniques...
May 2017: Echocardiography
https://www.readbyqxmd.com/read/28240433/use-of-three-dimensional-transesophageal-echocardiography-to-evaluate-mitral-valve-morphology-for-risk-stratification-prior-to-mitral-valvuloplasty
#4
Loren Francis, Alan Finley, Walead Hessami
Mitral stenosis is often managed percutaneously with an interventional procedure such as balloon commissurotomy. Although this often results in an increased mitral valve area and improved clinical symptoms, this procedure is not benign and may have serious complications including the development of hemodynamically significant mitral valve regurgitation. Multiple scoring systems have been developed to attempt to risk stratify these patients prior to their procedure. CASE: A 64-year-old patient underwent an emergent mitral valve replacement after having percutaneous mitral balloon commissurotomy complicated by development of severe mitral regurgitation...
February 2017: Echocardiography
https://www.readbyqxmd.com/read/28144714/-new-and-established-aspects-of-cardiological-diagnostics-using-tee-do-we-need-3d-technology-in-clinical-routine
#5
A Hagendorff, S Stoebe, D Jurisch, M Neef, M Metze, D Pfeiffer
In comparison to transthoracic echocardiography (TTE) transesophageal echocardiography (TEE) enables an acquisition of images with better spatial resolution due to the use of higher ultrasound frequencies. Thus, the morphology and function of cardiac structures can principally be analyzed better and more accurately with TEE than with TTE. In addition, using three-dimensional (3D) TEE data sets standardized sectional planes can be constructed by post-processing, which enables quantitative assessment of the target structures...
January 31, 2017: Herz
https://www.readbyqxmd.com/read/27989057/ventricular-septal-defect-from-aortic-regurgitation-jet-lesion-in-aortic-valve-infective-endocarditis
#6
Sergiu Darabant, Shelby B Oberton, Luis P Roldan, Carlos A Roldan
Aortic valve infective endocarditis (IE) can be complicated with severe aortic regurgitation (AR) jet-related lesions such as vegetations, pseudoaneurysms, aneurysms or perforations on the anterior mitral leaflet. Herein is reported the case of a 69-year-old male with culture-negative aortic valve endocarditis complicated with aortic valve perforations resulting in severe and eccentric AR and an AR jet-related ventricular septal defect (VSD). Neither transthoracic echocardiography (TTE) nor two-dimensional transesophageal echocardiography (2D-TEE) were unable to clearly discriminate an aorto-right ventricular fistula from a VSD...
March 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27989043/distant-position-of-chordae-from-coaptation-causes-mitral-regurgitation-in-patients-with-atrial-fibrillation
#7
Yuji Itabashi, Hirotsugu Mihara, Javier Berdejo, Hiroto Utsunomiya, Takahiro Shiota
BACKGROUND: The study aim was to investigate the mechanism of mitral regurgitation (MR) in lone atrial fibrillation (AF) patients using three-dimensional (3D) transesophageal echocardiography (TEE). METHODS: A retrospective analysis was conducted of 64 patients with AF and a normal left ventricle, and without prolapse of the mitral valve. Among these patients, significant MR was not identified in 33 cases (AF+MR- group) but was present in 31 cases (AF+MR+ group)...
May 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27930514/fully-automated-software-for-mitral-annulus-evaluation-in-chronic-mitral-regurgitation-by-3-dimensional-transesophageal-echocardiography
#8
COMPARATIVE STUDY
Iolanda Aquila, Covadonga Fernández-Golfín, Luis Miguel Rincon, Ariana González, Ana García Martín, Rocio Hinojar, Jose Julio Jimenez Nacher, Ciro Indolfi, Jose Luis Zamorano
Three-dimensional (3D) transesophageal echocardiography (TEE) is the gold standard for mitral valve (MV) anatomic and functional evaluation. Currently, dedicated MV analysis software has limitations for its use in clinical practice. Thus, we tested here a complete and reproducible evaluation of a new fully automatic software to characterize MV anatomy in different forms of mitral regurgitation (MR) by 3D TEE.Sixty patients were included: 45 with more than moderate MR (28 organic MR [OMR] and 17 functional MR [FMR]) and 15 controls...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27876001/severe-mitral-regurgitation-due-to-mitral-leaflet-aneurysm-diagnosed-by-three-dimensional-transesophageal-echocardiography-a-case-report
#9
Takao Konishi, Naohiro Funayama, Tadashi Yamamoto, Daisuke Hotta, Kenjiro Kikuchi, Katsumi Ohori, Hiroshi Nishihara, Shinya Tanaka
BACKGROUND: A small mitral valve aneurysm (MVA) presenting as severe mitral regurgitation (MR) is uncommon. CASE PRESENTATION: A 47-year-old man with a history of hypertension complained of exertional chest discomfort. A transthoracic echocardiogram (TTE) revealed the presence of MR and prolapse of the posterior leaflet. A 6-mm in diameter MVA, not clearly visualized by TTE, was detected on the posterior leaflet on a three-dimensional (3D) transesophageal echocardiography (TEE)...
November 22, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27866678/patient-specific-cfd-models-for-intraventricular-flow-analysis-from-3d-ultrasound-imaging-comparison-of-three-clinical-cases
#10
A M Bavo, A M Pouch, J Degroote, J Vierendeels, J H Gorman, R C Gorman, P Segers
BACKGROUND: As the intracardiac flow field is affected by changes in shape and motility of the heart, intraventricular flow features can provide diagnostic indications. Ventricular flow patterns differ depending on the cardiac condition and the exploration of different clinical cases can provide insights into how flow fields alter in different pathologies. METHODS: In this study, we applied a patient-specific computational fluid dynamics model of the left ventricle and mitral valve, with prescribed moving boundaries based on transesophageal ultrasound images for three cardiac pathologies, to verify the abnormal flow patterns in impaired hearts...
January 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/27863908/role-of-echocardiography-for-catheter-based-management-of-valvular-heart-disease
#11
REVIEW
Takahiro Shiota
Catheter-based treatment of valvular heart disease, such as transvalvular aortic valve replacement (TAVR) or mitral clip procedure, has been increasingly accepted as a treatment choice for the past several years. Such new treatment options have been changing the management of patients with valvular heart disease drastically while socio-economic factors regarding their application need to be taken into consideration. The use of echocardiography, including transesophageal echocardiography (TEE), for such catheter-based treatments is essential for the success of the procedures...
January 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/27718462/towards-patient-specific-modeling-of-mitral-valve-repair-3d-transesophageal-echocardiography-derived-parameter-estimation
#12
Fan Zhang, Jingjing Kanik, Tommaso Mansi, Ingmar Voigt, Puneet Sharma, Razvan Ioan Ionasec, Lakshman Subrahmanyan, Ben A Lin, Lissa Sugeng, David Yuh, Dorin Comaniciu, James Duncan
Transesophageal echocardiography (TEE) is routinely used to provide important qualitative and quantitative information regarding mitral regurgitation. Contemporary planning of surgical mitral valve repair, however, still relies heavily upon subjective predictions based on experience and intuition. While patient-specific mitral valve modeling holds promise, its effectiveness is limited by assumptions that must be made about constitutive material properties. In this paper, we propose and develop a semi-automated framework that combines machine learning image analysis with geometrical and biomechanical models to build a patient-specific mitral valve representation that incorporates image-derived material properties...
September 27, 2016: Medical Image Analysis
https://www.readbyqxmd.com/read/27714712/transapical-off-pump-mitral-valve-repair-first-experience-with-the-neochord-system-in-poland-report-of-two-cases
#13
Krzysztof Wróbel, Katarzyna Kurnicka, Marcin Zygier, Wojciech Dyk, Ryszard Wojdyga, Dariusz Zieliński, Małgorzata Jarzębska, Zbigniew Juraszyński, Barbara Lichodziejewska, Piotr Pruszczyk, Andrzej Biederman, Giovanni Speziali, Uwe Kasten
BACKGROUND: Artificial chord implantation to repair a flail or prolapsing mitral valve leaflet requires open heart surgery and cardiopulmonary bypass. AIM: Transapical off-pump artificial chordae implantation is a new surgical technique proposed to treat degenerative mitral valve regurgitation. The procedure is performed using the NeoChord DS1000 system (NeoChord, Inc., St. Louis Park, MN, USA), which facilitates both implantation and lenght adjustment of the artificial chordae under two (2D)- and three (3D)-dimensional transoesophageal echocardiographic (TEE) guidance on a beating heart...
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/27612951/patient-specific-cfd-simulation-of-intraventricular-haemodynamics-based-on-3d-ultrasound-imaging
#14
A M Bavo, A M Pouch, J Degroote, J Vierendeels, J H Gorman, R C Gorman, P Segers
BACKGROUND: The goal of this paper is to present a computational fluid dynamic (CFD) model with moving boundaries to study the intraventricular flows in a patient-specific framework. Starting from the segmentation of real-time transesophageal echocardiographic images, a CFD model including the complete left ventricle and the moving 3D mitral valve was realized. Their motion, known as a function of time from the segmented ultrasound images, was imposed as a boundary condition in an Arbitrary Lagrangian-Eulerian framework...
September 9, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/27603720/computational-virtual-evaluation-of-the-effect-of-annuloplasty-ring-shape
#15
Ahnryul Choi, David D McPherson, Hyunggun Kim
Mitral regurgitation (MR) is a result of mitral valve (MV) pathology. Its etiology can be categorized as degenerative or functional MR. Ring annuloplasty aims to reconfigure a dilated mitral annulus to its normal size and shape. We investigated the effect of annuloplasty ring shape on MR outcome using our established 3-dimensional (3-D) echocardiography-based computational MV evaluation protocols. Virtual patient MV models were created from 3-D transesophageal echocardiographic data in patients with MR because of mitral annular dilation...
September 7, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27537190/transcatheter-mitral-valve-implantation-30-day-outcome-of-first-in-man-experience-with-an-apically-tethered-device
#16
Cesare Quarto, Simon Davies, Alison Duncan, Alistair Lindsay, Georg Lutter, Lucian Lozonschi, Neil Moat
OBJECTIVE: A small number of transcatheter mitral valve implants (TMVIs) have been reported using devices designed to treat secondary mitral regurgitation (MR). However, MR has many etiologies, and patients have a broad spectrum of annular size, geometry, and lesions. There are a number of technical challenges for TMVI including left ventricular outflow tract obstruction and paravalvular MR. Thirty days' outcome of first-in-man implants with a novel TMVI device is reported. METHODS: The Tendyne TMVI system consists of a porcine pericardial valve in a tethered nitinol frame...
May 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/27535338/novel-mechanistic-insights-into-atrial-functional-mitral-regurgitation%C3%A3-3-dimensional-echocardiographic-study
#17
Tomoko Machino-Ohtsuka, Yoshihiro Seo, Tomoko Ishizu, Kimi Sato, Akinori Sugano, Masayoshi Yamamoto, Yoshie Hamada-Harimura, Kazutaka Aonuma
BACKGROUND: Left atrial remodeling caused by persistent atrial fibrillation (AF) causes atrial functional mitral regurgitation (MR), even though left ventricular (LV) remodeling and organic changes of the mitral leaflets are lacking. The detailed mechanism of atrial functional MR has not been fully investigated. METHODS AND RESULTS: Of 1,167 patients with AF who underwent 3D transesophageal echocardiography, 75 patients were retrospectively selected who developed no, mild, or moderate-to-severe atrial functional MR (n=25 in each group) despite an LV ejection fraction ≥50% and LV volumes within the normal range...
September 23, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/27528216/three-dimensional-dynamic-morphology-of-the-mitral-valve-in-different-forms-of-mitral-valve-prolapse-potential-implications-for-annuloplasty-ring-selection
#18
Astrid Apor, Anikó Ilona Nagy, Attila Kovács, Aristomenis Manouras, Péter Andrássy, Béla Merkely
BACKGROUND: Real-time three-dimensional transesophageal echocardiography has increased our understanding of the distinct pathomechanisms underlying functional, ischaemic or degenerative mitral regurgitation. However, potential differences in dynamic morphology between the subtypes of degenerative mitral prolapse have scarcely been investigated. METHODS: In order to compare the dynamic behavior of the different phenotypes of degenerative mitral valve prolapse, real-time three-dimensional transesophageal echocardiography recordings of 77 subjects, 27 with Barlow disease (BD), 32 with Fibroelastic deficiency (FED) and 18 normal controls (NC) were analysed...
August 15, 2016: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/27448551/mitral-valve-repair-using-a-semirigid-ring-patient-selection-and-early-outcomes
#19
Song Wan, Alex Pw Lee, Saina Attaran, Peter Sy Yu, Sylvia Sw Au, Micky Wt Kwok, Rainbow Wh Lau, Randolph Hl Wong, Innes Yp Wan, Siu-Keung Ng, Malcolm J Underwood
BACKGROUND: Commonly used complete mitral annuloplastic rings include saddle-shaped and semirigid rings, with no clear indication for either type. A semirigid ring may be preferred in patients whose native mitral saddle shape is well maintained. We present our experience of using semirigid rings for mitral valve repair. METHODS: We routinely measured the annular height-to-commissural width ratio by 3-dimensional transesophageal echocardiography prior to mitral repair...
September 2016: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/27324801/3d-printed-modeling-of-the-mitral-valve-for-catheter-based-structural-interventions
#20
Marija Vukicevic, Daniel S Puperi, K Jane Grande-Allen, Stephen H Little
As catheter-based structural heart interventions become increasingly complex, the ability to effectively model patient-specific valve geometry as well as the potential interaction of an implanted device within that geometry will become increasingly important. Our aim with this investigation was to combine the technologies of high-spatial resolution cardiac imaging, image processing software, and fused multi-material 3D printing, to demonstrate that patient-specific models of the mitral valve apparatus could be created to facilitate functional evaluation of novel trans-catheter mitral valve repair strategies...
February 2017: Annals of Biomedical Engineering
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