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proportional valve

Tatsuhiko Komiya
Ninety-nine patients underwent valve sparing aortic root replacement, mostly using reimplantation technique. Mean age was 56.1±13.4 years. Indication of this type of operation was extended to patients with significant aortic regurgitation (AR) accompanied by sinus Valsalva diameter more than 40 mm. Bicuspid valve presented in 17 patients. The proportion of severe AR was 55%. Valve plasty technique included central plication (n=61) and pericardial patch (n=7). Operative mortality was 1%. AR grade at discharge was none or trivial in 87 patients (88%)...
January 2018: Kyobu Geka. the Japanese Journal of Thoracic Surgery
Riccardo Asteggiano, Peter Bramlage, Dimitrios J Richter
Background Transcatheter aortic valve implantation (TAVI) continues to gain popularity in the management of patients with severe aortic stenosis (SAS). Distribution of resources to maximise appropriate use remains a priority. Design & methods To determine the current perceptions and behaviours regarding SAS patient management, an 18-point multiple-choice questionnaire was distributed to European Society of Cardiology (ESC) Council for Cardiology Practice (CCP) e-journal and/or electronic newsletter subscribers...
January 1, 2018: European Journal of Preventive Cardiology
Andreas W Schoenenberger, André Moser, Dominic Bertschi, Peter Wenaweser, Stephan Windecker, Thierry Carrel, Andreas E Stuck, Stefan Stortecky
OBJECTIVES: This study sought to evaluate whether frailty improves mortality prediction in combination with the conventional scores. BACKGROUND: European System for Cardiac Operative Risk Evaluation (EuroSCORE) or Society of Thoracic Surgeons (STS) score have not been evaluated in combined models with frailty for mortality prediction after transcatheter aortic valve replacement (TAVR). METHODS: This prospective cohort comprised 330 consecutive TAVR patients ≥70 years of age...
February 26, 2018: JACC. Cardiovascular Interventions
Thomas A Treibel, Rebecca Kozor, Rebecca Schofield, Giulia Benedetti, Marianna Fontana, Anish N Bhuva, Amir Sheikh, Begoña López, Arantxa González, Charlotte Manisty, Guy Lloyd, Peter Kellman, Javier Díez, James C Moon
BACKGROUND: Left ventricular (LV) hypertrophy, a key process in human cardiac disease, results from cellular (hypertrophy) and extracellular matrix expansion (interstitial fibrosis). OBJECTIVES: This study sought to investigate whether human myocardial interstitial fibrosis in aortic stenosis (AS) is plastic and can regress. METHODS: Patients with symptomatic, severe AS (n = 181; aortic valve area index 0.4 ± 0.1 cm2 /m2 ) were assessed pre-aortic valve replacement (AVR) by echocardiography (AS severity, diastology), cardiovascular magnetic resonance (CMR) (for volumes, function, and focal or diffuse fibrosis), biomarkers (N-terminal pro-B-type natriuretic peptide and high-sensitivity troponin T), and the 6-min walk test...
February 27, 2018: Journal of the American College of Cardiology
M B Rashid, T Parvin, C M Ahmed, M J Islam, M M Monwar, K K Karmoker, R Parveen, S S Shakil, M N Hasan
Rheumatic heart disease causes a significant number of morbidity and mortality in Bangladesh. Although the mitral and the aortic valve are the two most involved valves in rheumatic heart disease, the tricuspid valve disease is not uncommon secondary to, or in association with, mitral or aortic valve disease, but receives less attention as compared to the primary left-sided valve disease. Appropriate treatment of the tricuspid valve disease may improve long-term functional outcome. But the pattern and extent of the tricuspid valve involvement was not studied recently...
January 2018: Mymensingh Medical Journal: MMJ
Nataliya R Nichay, Irina Y Zhuravleva, Yuriy Y Kulyabin, Tatyana P Timchenko, Alexey V Voitov, Elena V Kuznetsova, Ilia A Soynov, Alexey V Zubritskiy, Alexander V Bogachev-Prokophiev, Alexander M Karaskov
OBJECTIVES: In this study, we aimed to determine the incidence of reintervention and calcification of xenografts in paediatric patients who underwent placement of the right ventricle-to-pulmonary artery valved conduits. METHODS: We retrospectively analysed clinical data of paediatric patients (1 day-18 years) who underwent right ventricular outflow tract reconstruction using xenograft from 2000 to 2016 at a single centre. RESULTS: A total of 301 patients underwent the placement of 337 xenografts, including glutaraldehyde-treated bovine jugular vein (n = 171, 50...
February 14, 2018: Interactive Cardiovascular and Thoracic Surgery
Young Woong Kim, Sung-Ho Jung, Suk Jung Choo, Cheol Hyun Chung, Jae Won Lee, Joon Bum Kim
Background: Prosthetic valve endocarditis (PVE) is a serious complication of cardiac valve replacement, and many patients with PVE require reoperation. The aim of this study was to review our institutional 20-year experience of surgical reoperative valve replacement in patients with PVE. Methods: A retrospective study was performed on 84 patients (mean age, 54.8±12.7 years; 51 males) who were diagnosed with PVE and underwent reoperative valve replacement from January 1995 to December 2016...
February 2018: Korean Journal of Thoracic and Cardiovascular Surgery
Myriam Santos-Folgar, Martín Otero-Agra, Felipe Fernández-Méndez, María Teresa Hermo-Gonzalo, Roberto Barcala-Furelos, Antonio Rodríguez-Núñez
INTRODUCTION: It has been observed that health professionals have difficulty performing quality cardiopulmonary resuscitation (CPR). The aim of this study was to compare the quality of ventilations performed by Nursing students on an infant model using different methods (mouth-to-mouth-and-nose or bag-valve-mask). MATERIAL AND METHODS: A quasi-experimental cross-sectional study was performed that included 46 second-year Nursing students. Two quantitative 4-minute tests of paediatric CPR were performed: a) mouth-to-mouth-and-nose ventilations, and b) ventilations with bag-valve-mask...
February 8, 2018: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
Nadia Bouabdallaoui, Susanna R Stevens, Torsten Doenst, Krzysztof Wrobel, Denis Bouchard, Marek A Deja, Robert E Michler, Yeow Leng Chua, Renato A K Kalil, Craig H Selzman, Richard C Daly, Benjamin Sun, Ljubomir T Djokovic, George Sopko, Eric J Velazquez, Jean L Rouleau, Kerry L Lee, Hussein R Al-Khalidi
OBJECTIVE: The authors aimed to assess determinants of intubation time and evaluate its impact on 30-day and 1-year postoperative survival in Surgical Treatment for Ischemic Heart Failure (STICH) trial patients. DESIGN, SETTING, PARTICIPANTS, AND INTERVENTIONS: A multivariable Cox proportional hazards model was used among the 1,446 surgical patients from the STICH trial who survived 36 hours after operation, in order to identify perioperative factors associated with 30-day and 1-year postoperative mortality...
December 23, 2017: Journal of Cardiothoracic and Vascular Anesthesia
Yosuke Ishii, Shun-Ichiro Sakamoto, Yasuo Miyagi, Yasuhiro Kawase, Toshiaki Otsuka, Takashi Nitta
OBJECTIVE: The purpose of this study was to determine the 22-year experience of the relationship between the pre-operative left atrial diameter (LAD) and atrial fibrillation (AF) recurrence after AF surgery. METHODS: Between November 1993 and April 2015, 244 patients underwent AF surgery concomitant with mitral valve surgery, and were completely followed in our institute. The full-maze procedure was performed in 231 patients and pulmonary vein isolation (PVI) in 13...
February 1, 2018: Seminars in Thoracic and Cardiovascular Surgery
Ronald M Lazar, Marykathryn A Pavol, Tobias Bormann, Michael G Dwyer, Carlye Kraemer, Roseann White, Robert Zivadinov, Jeffrey C Wertheimer, Angelika Thöne-Otto, Lisa D Ravdin, Richard Naugle, Dawn Mechanic-Hamilton, William S Garmoe, Anthony Y Stringer, Heidi A Bender, Samir R Kapadia, Susheel Kodali, Alexander Ghanem, Axel Linke, Roxana Mehran, Renu Virmani, Tamim Nazif, Azin Parhizgar, Martin B Leon
OBJECTIVES: The authors sought to determine baseline neurocognition before transcatheter aortic valve replacement (TAVR) and its correlations with pre-TAVR brain imaging. BACKGROUND: TAVR studies have not shown a correlation between diffusion-weighted image changes and neurocognition. The authors wanted to determine the extent to which there was already impairment at baseline that correlated with cerebrovascular disease. METHODS: SENTINEL (Cerebral Protection in Transcatheter Aortic Valve Replacement) trial patients had cognitive assessments of attention, processing speed, executive function, and verbal and visual memory...
January 27, 2018: JACC. Cardiovascular Interventions
Christine Pacheco, Christine Henri, Jessica Forcillo, Anita W Asgar
Aortic stenosis (AS), 1 of the most common valve diseases in developed countries, carries a poor prognosis if left untreated. Transcatheter aortic valve replacement (TAVR) has become the standard of care for high-risk and inoperable patients with severe aortic stenosis (AS). Women represent a significant proportion of patients with severe AS and demonstrate specific clinical, anatomic, and pathophysiological features that are evident both before and after valve replacement. In this review, we discuss these features as well as the outcomes of women undergoing TAVR for AS...
November 11, 2017: Canadian Journal of Cardiology
Tuomas Kiviniemi, Markus Malmberg, Fausto Biancari, Juha Hartikainen, Leo Ihlberg, Fredrik Yannopoulos, Teemu Riekkinen, Otto von Hellens, Joonas Lehto, Maunu Nissinen, K E Juhani Airaksinen, Tuomo Nieminen
Aims: Postoperative atrial fibrillation (POAF) is a frequent complication after open-heart surgery, and cardioversions (CV) are commonly performed to restore sinus rhythm. However, little data exists on thromboembolic risk related to early postoperative CV and on the recurrence of POAF after CV. CAREAVR study sought to assess the rate of strokes, transient ischemic attacks (TIA) and mortality shortly after POAF-triggered CV in patients who underwent isolated surgical aortic valve replacement (SAVR) with a bioprosthesis...
January 30, 2018: European Heart Journal. Quality of Care & Clinical Outcomes
Adham Elmously, Berhane Worku, Katherine D Gray, Arash Salemi
BACKGROUND: Transapical transcatheter mitral valve-in-valve implantation (TA-MVIVI) for bioprosthetic valve failure is an emerging alternative to re-operation in high risk patients. We report our outcomes in a patient population with a high proportion of cardiogenic shock. METHODS: Retrospective review was performed of all patients undergoing TA-MVIVI with an Edwards SAPIEN (Edwards Life sciences, Irvine, CA) prosthesis at our center between the years of 2013-2017...
January 27, 2018: Annals of Thoracic Surgery
Paul J Brewer, Richard J C Brown, Kate V Resner, Ruth Elizabeth Hill-Pearce, David Robert Worton, Nicholas D C Allen, Kevin C Blakley, Daniel Benucci, Matthew R Ellison
We have shown that the amount fraction of carbon dioxide in a nitrogen or synthetic air matrix stored in cylinders, increases as the pressure of the gas mixture reduces, while the amount fraction of methane remains unchanged. Our measurements show the initial amount fraction of carbon dioxide to be lower than the gravimetric value after preparation, which we attribute to the adsorption of a proportion of the molecules to active sites on the internal surface of the cylinder and the valve. As the mixture is consumed, the pressure in the cylinder reduces and the amount fraction of the component is observed to increase...
January 30, 2018: Analytical Chemistry
John K Forrest, Abeel A Mangi, Jeffrey J Popma, Kamal Khabbaz, Michael J Reardon, Neal S Kleiman, Steven J Yakubov, Daniel Watson, Susheel Kodali, Isaac George, Peter Tadros, George L Zorn, John Brown, Robert Kipperman, Sara Saul, Hongyan Qiao, Jae K Oh, Mathew R Williams
OBJECTIVES: This study sought to evaluate the Medtronic Evolut PRO Transcatheter Aortic Valve System in patients with severe symptomatic aortic stenosis. BACKGROUND: A next-generation self-expanding transcatheter aortic valve was designed with an external pericardial wrap with the intent to reduce paravalvular leak while maintaining the benefits of a low-profile, self-expanding, and repositionable supra-annular valve. METHODS: The Medtronic Evolut PRO Clinical Study included 60 patients undergoing transcatheter aortic valve replacement with the Evolut PRO valve at 8 investigational sites in the United States...
January 22, 2018: JACC. Cardiovascular Interventions
Ali Khoynezhad, Jacob DelaRosa, Marc R Moon, William T Brinkman, Richard B Thompson, Nimesh D Desai, S Chris Malaisrie, Leonard N Girardi, Joseph E Bavaria, T Brett Reece
BACKGROUND: This study intended to evaluate the safety and hemostatic efficacy of a novel vascular sealant (Tridyne™ , Neomend, Inc., Irvine, CA) compared to an accepted adjunctive hemostatic agent applied to aortotomy and sutures lines in cardiovascular surgery. METHODS: Subjects undergoing aortic valve replacement, ascending aortic replacement and/or aortic root replacement were randomized 2:1 to Tridyne™ (n =107) or Gelfoam®+ (Gelfoam®+, Baxter Healthcare Corp...
January 11, 2018: Annals of Thoracic Surgery
Bruno Branco Castro, Carlos Silva, Inês Patrunilho Efe Macário, Bruno Oliveira, Fernando Gonçalves, Joana Luísa Pereira
Bivalves are commonly used in biomonitoring programs to track pollutants. Several features, including its filter-feeding abilities, cumulatively argue in favour of the use of the Asian clam (Corbicula fluminea) as a biosentinel and an ecotoxicological model. Filtration in bivalves is very sensitive to external stimuli and its control is dictated by regulation of the opening/closure of the valves, which may be used as an avoidance defence against contaminants. Here, we investigate the filter-feeding behaviour of the Asian clam as an endpoint for assessing exposure to pollutants, driven by two complementary goals: (i) to generate relevant and sensitive toxicological information based on the ability of C...
January 4, 2018: Aquatic Toxicology
David X Zhuo, Kenneth C Bilchick, Sula Mazimba
OBJECTIVES: To evaluate the association of preoperative invasive hemodynamic parameters with mortality in valvular heart surgery. DESIGN: Retrospective cohort study. SETTING: Single tertiary academic medical center. PARTICIPANTS: A total of 382 patients who underwent preoperative right and/or left heart catheterization before open aortic valve replacement (AVR), open mitral valve repair/replacement (MVR), or combined AVR and MVR, from July 2009 to December 2014...
September 29, 2017: Journal of Cardiothoracic and Vascular Anesthesia
Amr F Barakat, Mohammad Q Raza, Kinjal Banerjee, Rayji S Tsutsui, Amgad Mentias, Karim Abdur Rehman, Badal Thakkar, Sajjad Gul, Raquib Faruqui, Amar Krishnaswamy, Leonardo L Rodriguez, Richard Grimm, Brian Griffin, Emin Murat Tuzcu, Samir R Kapadia
AIMS: Patients with severe secondary mitral regurgitation (MR) and normal ejection fraction are being excluded from clinical trials evaluating transcatheter mitral devices. We sought to evaluate the long-term mortality with medical management alone in this patient population. METHODS AND RESULTS: We retrospectively evaluated patients diagnosed with ≥3+ mitral MR at our institution over 15 years. Only patients with ejection fraction ≥ 60% were included in the study...
January 9, 2018: EuroIntervention
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