keyword
MENU ▼
Read by QxMD icon Read
search

Heart valve size

keyword
https://www.readbyqxmd.com/read/29149268/mitral-valve-replacement-with-the-novel-tribio-and-an-established-stented-bioprosthesis-in-a-sheep-model
#1
Sina Stock, Hans-Hinrich Sievers, Doreen Richardt, Michael Scharfschwerdt
OBJECTIVES: Heart valve replacement with a bioprosthesis is one of the most frequently performed procedures in cardiac surgery and represents a highly effective therapy to relieve diseased heart valves. Nevertheless, as postoperatively elevated transvalvular gradients and prosthesis-patient mismatch are reported as shortcomings of the procedure or of the currently used devices, there is a need for novel bioprostheses with improved haemodynamics. This study presents preclinical haemodynamic results after mitral valve replacement with the novel TRIBIO bioprosthesis (TRIBIO) compared with an established bioprosthesis in a sheep model...
November 15, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29135480/mechanical-surface-area-of-prosthetic-heart-valve-adverse-clinical-impact-of-large-mechanical-valve-in-mitral-position
#2
Yang Hyun Cho, Kiick Sung, Wook Sung Kim, Jae-Hun Kim, Sung Mok Kim, Pyo Won Park
Although thromboembolic accidents are serious adverse events associated with mechanical mitral valves, there have been no studies on the clinical impact of the large mechanical surface areas (MSAs) of mechanical mitral prostheses. Between 1995 and 2010, 488 consecutive adult patients underwent isolated mechanical mitral valve replacement. We measured the MSA via three-dimensional computed tomography for each prosthesis. Mean patient age was 50.6 ± 11.1 years. The mean body surface area (BSA) and MSA index (MSAI, MSA/BSA) were 1...
November 8, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29129879/transcatheter-aortic-valve-implantation-for-degenerated-19-mm-aortic-bioprosthetic-valve
#3
Kizuku Yamashita, Tomoyuki Fujita, Satsuki Fukushima, Yusuke Shimahara, Yuta Kume, Yorihiko Matsumoto, Naonori Kawamoto, Tatsuro Hitsumoto, Nobuyasu Ito, Yasuhiro Hamatani, Atsushi Okada, Hiroyuki Takahama, Makoto Amaki, Takuya Hasegawa, Yasuo Sugano, Hideaki Kanzaki, Toshihisa Anzai, Satoshi Yasuda, Junjiro Kobayashi
BACKGROUND: The valve-in-valve procedure, in which a transcatheter heart valve (THV) is implanted over a prosthetic valve, has been shown to be safe and therapeutically effective, depending on the size of the replacement valve.Methods and Results:We report 3 cases of successful valve-in-valve procedure to replace a degenerated 19-mm stented prosthetic aortic valve. Balloon-expanding THVs were implanted: 20-mm in the 1st case and 23-mm in the next 2. Aortic stenosis was almost completely resolved in all patients, who recovered promptly and without cardiac adverse events...
November 11, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29126782/feasibility-and-limitations-of-mitral-valve-repair-with-or-without-left-ventricular-reconstruction-in-non-ischemic-dilated-cardiomyopathy
#4
Yasushige Shingu, Tomonori Ooka, Hiroki Katoh, Tsuyoshi Tachibana, Suguru Kubota, Yoshiro Matsui
BACKGROUND: Although non-transplant surgical interventions for non-ischemic dilated cardiomyopathy (NIDCM) are relatively effective, their feasibility and limitations have not been fully elucidated. The aim of this study was to define the feasibility and limitations of mitral valve repair, with or without surgical ventricular reconstruction for patients with NIDCM in terms of postoperative low cardiac output syndrome (LOS). METHODS: Twenty non-transplant candidates (aged 57±13 years) with NIDCM and significant mitral regurgitation had undergone mitral valve repair combined with submitral procedures...
November 7, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29111398/multi-slice-ct-msct-imaging-in-pre-trans-catheter-aortic-valve-implantation-tavi-screening-how-to-perform-and-how-to-interpret
#5
REVIEW
George Latsios, Themistoklis N Spyridopoulos, Konstantinos Toutouzas, Andreas Synetos, George Trantalis, Konstantinos Stathogiannis, Vassiliki Penesopoulou, George Oikonomou, Elias Brountzos, Dimitrios Tousoulis
Aortic valve stenosis (AS) is the commonest valvular heart disease among elderly. Trans-catheter aortic valve implantation (TAVI) has become an established and effective alternative therapeutical procedure for inoperable and high risk patients with symptomatic AS. The procedural success is greatly dependent on a thorough pre- TAVI imaging screening. This requires a comprehensive and multi-modality approach, in which multi-slice computed tomography (MSCT) is the cornerstone in the selection of eligible patients, in choosing the appropriate prosthesis and its size, as well as in mapping the safest access route for the intervention...
October 27, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/29111284/two-dimensional-echocardiographic-estimates-of-left-atrial-function-in-healthy-dogs-and-dogs-with-myxomatous-mitral-valve-disease
#6
David Dickson, Domenico Caivano, Jose Novo Matos, Nuala Summerfield, Mark Rishniw
OBJECTIVES: To provide reference intervals for 2-dimensional linear and area-based estimates of left atrial (LA) function in healthy dogs and to evaluate the ability of estimates of LA function to differentiate dogs with subclinical myxomatous mitral valve disease (MMVD) and similarly affected dogs with congestive heart failure (CHF). ANIMALS: Fifty-two healthy adult dogs, 88 dogs with MMVD of varying severity. METHODS: Linear and area measurements from 2-dimensional echocardiographs in both right parasternal long and short axis views optimized for the left atrium were used to derive estimates of LA active emptying fraction, passive emptying fraction, expansion index, and total fractional emptying...
October 27, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/29107324/daytime-variation-of-perioperative-myocardial-injury-in-cardiac-surgery-and-its-prevention-by-rev-erb%C3%AE-antagonism-a-single-centre-propensity-matched-cohort-study-and-a-randomised-study
#7
David Montaigne, Xavier Marechal, Thomas Modine, Augustin Coisne, Stéphanie Mouton, Georges Fayad, Sandro Ninni, Cédric Klein, Staniel Ortmans, Claire Seunes, Charlotte Potelle, Alexandre Berthier, Celine Gheeraert, Catherine Piveteau, Rebecca Deprez, Jérome Eeckhoute, Hélène Duez, Dominique Lacroix, Benoit Deprez, Bruno Jegou, Mohamed Koussa, Jean-Louis Edme, Philippe Lefebvre, Bart Staels
BACKGROUND: On-pump cardiac surgery provokes a predictable perioperative myocardial ischaemia-reperfusion injury which is associated with poor clinical outcomes. We determined the occurrence of time-of-the-day variation in perioperative myocardial injury in patients undergoing aortic valve replacement and its molecular mechanisms. METHODS: We studied the incidence of major adverse cardiac events in a prospective observational single-centre cohort study of patients with severe aortic stenosis and preserved left ventricular ejection fraction (>50%) who were referred to our cardiovascular surgery department at Lille University Hospital (Lille, France) for aortic valve replacement and underwent surgery in the morning or afternoon...
October 26, 2017: Lancet
https://www.readbyqxmd.com/read/29071795/hemodynamic-assessment-of-perceval-sutureless-bioprosthesis-by-dobutamine-stress-echocardiography
#8
Antonino S Rubino, Fausto Biancari, Vincenzo Caruso, Vincenzo Lavanco, Fiorella Privitera, Ivana Rinaldi, Maria Sanfilippo, Giovanni Millan, Lucia V D'Urso, Sergio Castorina, Carmelo Mignosa
OBJECTIVES: The aim of this study was to evaluate the hemodynamic performance of a sutureless bioprosthesis under high workload at mid-term follow-up. METHODS: Thirty-two patients who underwent isolated aortic valve replacement with a Perceval sutureless bioprosthesis with a minimum follow-up of 1 year were enrolled in this study. S size prosthesis was deployed in 10 patients (31.3%), M size in 9 (28.1%), L size in 8 (25%) and XL size in 5 (15.6%). Effective orifice area (EOA), EOA index (EOAi), and transvalvular gradients were assessed at rest and during dobutamine stress echocardiography (DSE) a median of 19...
October 26, 2017: Echocardiography
https://www.readbyqxmd.com/read/29062752/technical-pitfalls-and-tips-for-the-valve-in-valve-procedure
#9
REVIEW
Vinayak Bapat
Transcatheter aortic valve implantation (TAVI) has emerged as a viable treatment modality for patients with severe aortic valve stenosis and multiple co-morbidities. More recent indications include the use of transcatheter heart valves (THV) to treat degenerated bioprosthetic surgical heart valves (SHV), which are failing due to stenosis or regurgitation. Valve-in-valve (VIV) procedures in the aortic position have been performed with a variety of THV devices, although the balloon-expandable SAPIEN valve platform (Edwards Lifesciences Ltd, Irvine, CA, USA) and self-expandable CoreValve platform (Medtronic Inc...
September 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29049811/effect-of-cone-reconstruction-on-right-ventricular-function-in-patients-with-ebstein-s-anomaly-a-meta-analysis
#10
Dongxu Li, Yasutaka Hirata, Xu Zhou, Akihiro Masuzawa, Minoru Ono, Qi An
OBJECTIVES: Cone reconstruction (CR) is a novel technique for surgically treating the tricuspid valve and right ventricle (RV) in patients with Ebstein's anomaly. However, precise changes in the RV function after CR remain unclear. This study aimed to evaluate the RV size and New York Heart Association (NYHA) functional class by conducting a meta-analysis of reported data. METHODS: The MEDLINE, EMBASE, Cochrane Library and China National Knowledge Infrastructure databases were searched for relevant studies...
September 23, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29049801/search-for-genetic-factors-in-bicuspid-aortic-valve-disease-acta2-mutations-do-not-play-a-major-role
#11
Giada Tortora, Anita Wischmeijer, Paolo Berretta, Jacopo Alfonsi, Luca Di Marco, Andrea Barbieri, Caterina Marconi, Federica Isidori, Cesare Rossi, Ornella Leone, Roberto Di Bartolomeo, Marco Seri, Davide Pacini
OBJECTIVES: Mutations in ACTA2 have been reported as a cause of familiar thoracic aortic aneurysm (TAA) with associated bicuspid aortic valve (BAV) in some individuals. Our aim is to investigate the role of ACTA2 mutations in BAV associated with TAA in 20 patients. METHODS: We recruited 20 patients who underwent surgery for BAV and TAA; clinical genetic evaluation and ACTA2 mutation analysis were performed on each patient, along with next-generation sequencing analysis of BAV-related genes...
November 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29049793/triangular-resection-versus-neochordal-replacement-for-posterior-leaflet-prolapse-a-morphological-assessment
#12
Wenrui Ma, Jiafei Chen, Wei Zhang, Weihua Wu, Wei Ye, Wei Shi, Ye Kong
OBJECTIVES: To evaluate the morphological reconstruction as assessed by 3D transoesophageal echocardiography after triangular resection and neochordal replacement in the treatment of posterior leaflet prolapse. METHODS: We retrospectively selected 46 patients with isolated posterior leaflet prolapse who were undergoing mitral valve repair using triangular resection ( n  = 20) and neochordal replacement ( n  = 26) techniques. Sixty patients without valvular heart disease were also included as the control group...
August 14, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29045589/standardization-of-adult-transthoracic-echocardiography-reporting-in-agreement-with-recent-chamber-quantification-diastolic-function-and-heart-valve-disease-recommendations-an-expert-consensus-document-of-the-european-association-of-cardiovascular-imaging
#13
Maurizio Galderisi, Bernard Cosyns, Thor Edvardsen, Nuno Cardim, Victoria Delgado, Giovanni Di Salvo, Erwan Donal, Leyla Elif Sade, Laura Ernande, Madalina Garbi, Julia Grapsa, Andreas Hagendorff, Otto Kamp, Julien Magne, Ciro Santoro, Alexandros Stefanidis, Patrizio Lancellotti, Bogdan Popescu, Gilbert Habib
Aims: This European Association Cardiovascular Imaging (EACVI) Expert Consensus document aims at defining the main quantitative information on cardiac structure and function that needs to be included in standard echocardiographic report following recent ASE/EACVI chamber quantification, diastolic function, and heart valve disease recommendations. The document focuses on general reporting and specific pathological conditions such as heart failure, coronary artery and valvular heart disease, cardiomyopathies, and systemic diseases...
October 17, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29029140/structural-valve-deterioration-in-the-mitroflow-biological-heart-valve-prosthesis
#14
Issa Farah Issa, Steen Hvitfeldt Poulsen, Farhad Waziri, Christian Torp Pedersen, Per Hostrup Nielsen, Lars Riber, Jordi S Dahl, Peter Søgaard, Martin Agge Nørgaard, Jacob Eifer Møller
OBJECTIVES: Concern has been raised regarding the long-term durability of the Mitroflow biological heart valve prosthesis. Our aim was to assess the incidence of structural valve degeneration (SVD) for the Mitroflow bioprosthesis in a nationwide study in Denmark including all patients alive in Denmark who had received a Mitroflow aortic bioprosthesis since 2000. METHODS: Patients alive in Denmark with a Mitroflow bioprosthesis implanted since January 2000 were invited to participate in a nationwide cross-sectional study with a predefined definition of SVD...
September 28, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29024827/left-ventricular-non-compaction-with-ebstein-anomaly-attributed-to-a-tpm1-mutation
#15
Aleksandra Nijak, Maaike Alaerts, Cuno Kuiperi, Anniek Corveleyn, Bert Suys, Bernard Paelinck, Johan Saenen, Emeline Van Craenenbroeck, Lut Van Laer, Bart Loeys, Aline Verstraeten
Left ventricular non-compaction (cardiomyopathy) (LVN(C)) is a rare hereditary cardiac condition, resulting from abnormal embryonic myocardial development. While it mostly occurs as an isolated condition, association with other cardiovascular manifestations such as Ebstein anomaly (EA) has been reported. This congenital heart defect is characterized by downward displacement of the tricuspid valve and leads to diminished ventricular size and function. In an autosomal dominant LVN(C) family consisting of five affected individuals, of which two also presented with EA and three with mitral valve insufficiency, we pursued the genetic disease cause using whole exome sequencing (WES)...
October 9, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29017461/feasibility-and-safety-of-early-discharge-after-transfemoral-transcatheter-aortic-valve-implantation-rationale-and-design-of-the-fast-tavi-registry
#16
Marco Barbanti, Jan Baan, Mark S Spence, Fortunato Iacovelli, Gian Luca Martinelli, Francesco Saia, Alessandro Santo Bortone, Frank van der Kley, Douglas F Muir, Cameron G Densem, Marije Vis, Martijn S van Mourik, Lenka Seilerova, Claudia M Lüske, Peter Bramlage, Corrado Tamburino
BACKGROUND: There is an increasing trend towards shorter hospital stays after transcatheter aortic valve implantation (TAVI), in particular for patients undergoing the procedure via transfemoral (TF) access. Preliminary data suggest that there exists a population of patients that can be discharged safely very early after TF-TAVI. However, current evidence is limited to few retrospective studies, encompassing relatively small sample sizes. METHODS: The Feasibility And Safety of early discharge after Transfemoral TAVI (FAST-TAVI) registry is a prospective observational registry that will be conducted at 10 sites across Italy, the Netherlands and the UK...
October 10, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28994774/establishment-of-larval-zebrafish-as-an-animal-model-to-investigate-trypanosoma-cruzi-motility-in-vivo
#17
Veronica Akle, Nathalie Agudelo-Dueñas, Maria A Molina-Rodriguez, Laurel Brianne Kartchner, Annette Marie Ruth, John M González, Manu Forero-Shelton
Chagas disease is a parasitic infection caused by Trypanosoma cruzi, whose motility is not only important for localization, but also for cellular binding and invasion. Current animal models for the study of T. cruzi allow limited observation of parasites in vivo, representing a challenge for understanding parasite behavior during the initial stages of infection in humans. This protozoan has a flagellar stage in both vector and mammalian hosts, but there are no studies describing its motility in vivo.The objective of this project was to establish a live vertebrate zebrafish model to evaluate T...
September 30, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28990316/non-invasive-assessment-of-left-ventricular-filling-pressure
#18
REVIEW
Sherif F Nagueh
Dyspnoea is a presenting symptom for patients with heart failure. It is often due to elevated left ventricular (LV) filling pressure but can be due to pulmonary disease or other non-cardiac reasons. While physical examination is useful, it has its limitations. Accordingly, non-invasive imaging has an important role in the diagnostic evaluation of patients with known or suspected heart failure. Echocardiography is usually the first test obtained and is used to determine LV volumes, ejection fraction and mass as well as right ventricular size and function, left and right atrial volumes, valvular lesions, and pulmonary artery pressures...
October 8, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28978603/percutaneous-balloon-pulmonary-valvuloplasty-pbpv-of-extreme-pulmonary-valve-stenosis-by-the-use-of-accura-balloon
#19
Santosh Kumar Sinha, Vikas Mishra, Mahmadula Razi, Mukesh Jitendra Jha
Transcatheter therapy of valvular pulmonary stenosis is one of first catheter interventions facilitating its application in field of structural heart disease and now treatment of choice for significant pulmonary stenosis. Myriads of balloon catheter have been used for this purpose starting from Diamond (Boston Scientific,Natick, MA USA), Marshal (Medi-Tech,Watertown MAUSA), Innoue balloon, Tyshak I and currently Tyshak II. Diameter and length of balloon depend on size of annulus and age group, respectively...
October 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28950325/management-of-tricuspid-valve-regurgitation-position-statement-of-the-european-society-of-cardiology-working-groups-of-cardiovascular-surgery-and-valvular-heart-disease
#20
Manuel J Antunes, José Rodríguez-Palomares, Bernard Prendergast, Michele De Bonis, Raphael Rosenhek, Nawwar Al-Attar, Fabio Barili, Filip Casselman, Thierry Folliguet, Bernard Iung, Patrizio Lancellotti, Claudio Muneretto, Jean-François Obadia, Luc Pierard, Piotr Suwalski, Pepe Zamorano
Tricuspid regurgitation (TR) is a very frequent manifestation of valvular heart disease. It may be due to the primary involvement of the valve or secondary to pulmonary hypertension or to the left-sided heart valve disease (most commonly rheumatic and involving the mitral valve). The pathophysiology of secondary TR is complex and is intrinsically connected to the anatomy and function of the right ventricle. A systematic multimodality approach to diagnosis and assessment (based not only on the severity of the TR but also on the assessment of annular size, RV function and degree of pulmonary hypertension) is, therefore, essential...
August 21, 2017: European Journal of Cardio-thoracic Surgery
keyword
keyword
14857
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"