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https://www.readbyqxmd.com/read/28741094/systolic-function-of-right-ventricular-outflow-tract-is-a-better-predictor-to-exercise-performance-after-pulmonary-valve-replacement-in-tetralogy-of-fallot
#1
Jianhua Li, Shuhua Luo, Fei Liu, Qi An
Debate on the proper timing of pulmonary valve replacement (PVR) after repair of tetralogy of Fallot is still continuing. We aim to clarify how the different components of right ventricle (RV) changed with relieved volume overload in the remodeling process after pulmonary valve replacement and gain a clear idea of the relationship between different right ventricle components function and exercise capacity after PVR in these patients. The medical records and results of cardiac magnetic resonance imaging and cardiopulmonary exercise testing of 25 consecutive eligible patients were reviewed...
July 24, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28740720/analysing-the-reasons-of-failure-of-surgical-mitral-repair-approaches-do-we-need-to-better-think-in-biomechanics
#2
Massimiliano Fraldi, Cristiano Spadaccio, Christos G Mihos, Francesco Nappi
The failure of mitral valve repair procedures revealed in the outcomes of the recent randomized studies is suggesting the necessity for a better understanding of the biomechanical mechanisms underlying the failure of the surgical approaches. Use of biomechanical modelling and finite element analysis (FEA) in cardiovascular research is an important aid in this context. In our group we developed a biomechanical model taking into account all the component of the mitral valve functional unit including the valve leaflets, the annulus, the papillary muscles, the chordae tendinea and the ventricular geometry...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740719/multimodality-imaging-assessment-of-mitral-valve-anatomy-in-planning-for-mitral-valve-repair-in-secondary-mitral-regurgitation
#3
REVIEW
Romain Capoulade, Nicolas Piriou, Jean-Michel Serfaty, Thierry Le Tourneau
Secondary mitral regurgitation (MR) is frequent valvular heart disease and conveys worse prognostic. Therapeutic surgical or percutaneous options are available in the context of severe symptomatic secondary MR, but the best approach to treat these patients remains unclear, given the lack of clear clinical evidence of benefit. A comprehensive evaluation of the mitral valve apparatus and the left ventricle (LV) has the ability to clearly define and characterize the disease, and thus determine the best option for the patient to improve its clinical outcomes, as well as quality of life and symptoms...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740718/papillary-muscle-approximation-in-mitral-valve-repair-for-secondary-mr
#4
REVIEW
Francesco Nappi, Cristiano Spadaccio, Massimo Chello, Christos G Mihos
Ischemic mitral regurgitation (IMR) is a complex disorder occurring after a myocardial infarction and affecting both the mitral valvular and subvalvular apparati. Several abnormalities can be detected in IMR as annular dilatation, leaflet tethering with impaired coaptation and papillary muscle (PM) displacement along a posterior, apical or lateral vectors. Treatments available include, beside myocardial revascularization, mitral-valve repair or chordal-sparing replacement. Repair is normally achieved downsizing the mitral valve annulus with a rigid or semirigid ring...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740716/biomechanics-raises-solution-to-avoid-geometric-mitral-valve-configuration-abnormalities-in-ischemic-mitral-regurgitation
#5
REVIEW
Francesco Nappi, Cristiano Spadaccio, Christos G Mihos, Massimiliano Fraldi
Ischemic mitral regurgitation (IMR) is a form of mitral insufficiency that is characterized by papillary muscle (PM) displacement, leaflet tethering, reduced closing forces, and different degree of annular dilatation. Treatment of this condition includes mitral valve replacement or mitral valve repair with restrictive annuloplasty. Recent evidences in mitral valve repair showed that addressing only the annulus and neglecting the subvalvular apparatus provides a suboptimal operation with poor long-term results...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740714/aortic-valve-replacement-in-patients-with-a-left-ventricular-ejection-fraction-%C3%A2-35-performed-via-a-minimally-invasive-right-thoracotomy
#6
Orlando Santana, Steve Xydas, Roy F Williams, Angelo La Pietra, Maurice Mawad, Vicente Behrens, Esteban Escolar, Christos G Mihos
BACKGROUND: We evaluated the outcomes of patients with aortic valve pathology in the setting of a left ventricular ejection fraction ≤35% who underwent minimally invasive aortic valve replacement (AVR), with or without concomitant mitral valve (MV) surgery. METHODS: All minimally invasive AVR in patients with a left ventricular ejection fraction ≤35%, performed via a right thoracotomy for aortic stenosis or regurgitation between January 2009 and March 2013, were retrospectively evaluated...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740713/outcomes-of-minimally-invasive-double-valve-surgery
#7
Orlando Santana, Steve Xydas, Roy F Williams, Angelo LaPietra, Maurice Mawad, Frederick Hasty, Esteban Escolar, Christos G Mihos
BACKGROUND: Double valve surgery is associated with an increased peri-operative morbidity and mortality. A less invasive right thoracotomy approach may be a viable alternative to median sternotomy surgery in these higher-risk patients. METHODS: We retrospectively analyzed the baseline demographics, operative characteristics, and post-operative outcomes of patients who underwent minimally invasive double valve surgery between January 2009 and December 2011 at our institution...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740712/hybrid-approach-of-percutaneous-coronary-intervention-followed-by-minimally-invasive-mitral-valve-surgery-a-5-year-single-center-experience
#8
Orlando Santana, Steve Xydas, Roy F Williams, Maurice Mawad, Todd B Heimowitz, Andrés M Pineda, Howard S Goldman, Christos G Mihos
BACKGROUND: The current study evaluated the safety and feasibility of staged ("hybrid") percutaneous coronary intervention (PCI) followed by isolated minimally invasive mitral valve (MV) surgery [PCI + minimally invasive mitral valve surgery (MIMVS)], for patients with concomitant coronary artery and MV disease. METHODS: A total of 93 patients who underwent PCI + MIMVS for coronary artery and MV disease between February 2009 and April 2014 were retrospectively analyzed...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740711/mitral-valve-repair-and-subvalvular-intervention-for-secondary-mitral-regurgitation-a-systematic-review-and-meta-analysis-of-randomized-controlled-and-propensity-matched-studies
#9
Christos G Mihos, Steve Xydas, Evin Yucel, Romain Capoulade, Roy F Williams, Maurice Mawad, Guillermo Garcia, Orlando Santana
BACKGROUND: Combining a ring annuloplasty (Ring) with a mitral subvalvular intervention (Ring + subvalvular) in patients with secondary mitral regurgitation (MR) may improve mitral valve (MV) repair durability. However, the outcomes of this strategy compared with a Ring only, have not been clearly defined. METHODS: A systematic review and meta-analysis was performed utilizing randomized controlled and propensity matched studies which compared a Ring + subvalvular versus Ring MV repair for the treatment of secondary MR...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28740708/staged-percutaneous-coronary-intervention-followed-by-minimally-invasive-mitral-valve-surgery-versus-combined-coronary-artery-bypass-graft-and-mitral-valve-surgery-for-two-vessel-coronary-artery-disease-and-moderate-to-severe-ischemic-mitral-regurgitation
#10
Christos G Mihos, Steve Xydas, Roy F Williams, Andrés M Pineda, Evin Yucel, Hector Davila, Nirat Beohar, Orlando Santana
BACKGROUND: The optimal treatment for concomitant two-vessel coronary artery disease (CAD) and moderate to severe ischemic mitral regurgitation (IMR) remains unclear. We compared the results of a staged percutaneous coronary intervention followed by minimally invasive mitral valve surgery (PCI+MIVS) versus combined coronary artery bypass graft and mitral valve surgery (CABG+MVS) in this population. METHODS: All consecutive patients with two-vessel CAD and moderate to severe IMR, who underwent PCI+MIVS or CABG+MVS at our institution between February 2009 and April 2014, were retrospectively evaluated...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28734454/patient-specific-ventricular-access-site-selection-for-the-neochord-mitral-valve-repair-procedure
#11
Andrea Colli, Eleonora Bizzotto, Erica Manzan, Laura Besola, Nicola Pradegan, Roberto Bellu, Demetrio Pittarello, Gino Gerosa
Selecting the ventricular access site on the basis of mitral valve anatomy improves the outcomes for a subgroup of patients undergoing the transapical echocardiographically guided NeoChord (NeoChord, Inc, St. Louis Park, MN) repair procedure to correct mitral regurgitation and who have a leaflet-to-annulus index lower than the recommended efficacy threshold of 1.25.
August 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28734427/libman-sacks-endocarditis-due-to-systemic-lupus-erythematosus-activation-after-mitral-valve-plasty
#12
Takaaki Samura, Koichi Toda, Daisuke Yoshioka, Teruya Nakamura, Shigeru Miyagawa, Yasushi Yoshikawa, Shunsuke Saito, Keitaro Domae, Yoshiki Sawa
Libman-Sacks endocarditis is a cardiac manifestation of systemic lupus erythematosus (SLE) and antiphospholipid syndrome. We report a case of mitral valve destruction due to Libman-Sacks endocarditis, which was caused by activation of SLE, despite prompt initiation of systemic steroid therapy. The prevention of SLE activation is critically important in valve surgery for patients with SLE. To the best of our knowledge, this is the first case of repaired mitral valve destruction due to activation of SLE, which was caused by valve surgery itself...
August 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28728865/mass-spring-models-for-the-simulation-of-mitral-valve-function-looking-for-a-trade-off-between-reliability-and-time-efficiency
#13
O A Pappalardo, F Sturla, F Onorati, G Puppini, M Selmi, G B Luciani, G Faggian, A Redaelli, E Votta
Patient-specific finite element (FE) models can assess the impact of mitral valve (MV) repair on the complex MV anatomy and function. However, FE excessive time requirements hamper their use for surgical planning; mass-spring models (MSMs) represent a more approximate approach but can provide almost real-time simulations. On this basis, we implemented MSMs of three healthy MVs from cardiac magnetic resonance (cMR) imaging to simulate the systolic MV closure, including the in vivo papillary muscles and annular kinematics, and the anisotropic and non-linear mechanical response of MV tissues...
July 17, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28728782/novel-nonresectional-mitral-valve-repair-another-tool-in-the-mitral-surgeon-s-armamentarium
#14
EDITORIAL
Malini Daniel, Pavan Atluri
No abstract text is available yet for this article.
June 20, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28728720/mitral-valve-repair-the-french-correction-versus-the-american-correction
#15
REVIEW
Sarah A Schubert, James H Mehaffey, Eric J Charles, Irving L Kron
Degenerative mitral valve disease causing mitral regurgitation is the most common organic valve pathology and is classified based on leaflet motion. The "French correction" mitral valve repair method restores normal valvular anatomy with extensive leaflet resection, chordal manipulation, and rigid annuloplasty. The American correction attempts to restore normal valve function through minimal leaflet resection, flexible annuloplasty, and use of artificial chordae. These differing methods of mitral valve repair reflect an evolution in principles, but both require understanding of the valve pathology and correction of leaflet prolapse and annular dilatation...
August 2017: Surgical Clinics of North America
https://www.readbyqxmd.com/read/28725980/prenatal-diagnosis-of-premature-constriction-of-the-ductus-arteriosus-with-tricuspid-papillary-muscle-rupture-a-case-report
#16
Ayako Inatomi, Jun Sasahara, Keisuke Ishii, Mistuda Nobuaki
We describe the case of a neonate who was prenatally diagnosed at a gestational age of 36 weeks with premature constriction of the ductus arteriosus. Blood from the thin ductus arteriosus flowed toward the pulmonary artery. Severe tricuspid regurgitation was also observed. We subsequently confirmed rupture of the tricuspid papillary muscle after birth. Cardiotonic drugs and nitric oxide were administered immediately at birth for pulmonary hypertension, and this therapy was continued until the seventh postnatal day...
July 19, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28725332/thyrotoxic-valvulopathy-case-report-and-review-of-the-literature
#17
Keniel Pierre, Sushee Gadde, Bassam Omar, G Mustafa Awan, Christopher Malozzi
We report a 42-year-old female who was admitted for abdominal pain, and also endorsed dyspnea, fatigue and chronic palpitations. Past medical history included asthma, patent ductus arteriosus repaired in childhood and ill-defined thyroid disease. Physical examination revealed blood pressure of 136/88 mm Hg and heart rate of 149 beats per minute. Cardiovascular exam revealed an irregularly irregular rhythm, and pulmonary exam revealed mild expiratory wheezing. Abdomen was tender. Electrocardiogram revealed atrial fibrillation with rapid ventricular response which responded to intravenous diltiazem...
June 2017: Cardiology Research
https://www.readbyqxmd.com/read/28724839/effect-of-recurrent-mitral-regurgitation-after-mitral-valve-repair-in-patients-with-degenerative-mitral-regurgitation
#18
Jung-Hwan Kim, Seung Hyun Lee, Hyun-Chel Joo, Young-Nam Youn, Kyung-Jong Yoo, Byung-Chul Chang, Sak Lee
BACKGROUND: This study investigated the consequences of recurrent mitral regurgitation (MR) after mitral valve (MV) repair in patients with degenerative MR and risk factors for recurrence.Methods and Results:From January 1990 to December 2015, 792 patients underwent MV repair due to degenerative MR. Recurrent MR was defined as moderate-to-severe MR on follow-up echocardiography. Mean follow-up duration was 8.71±5.58 years. During the follow-up period, MR recurred in 133 (16.8%) patients, and the MR recurrence-free rate at 20 years was 77...
July 20, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28713108/current-prescribing-practices-for-antibiotic-prophylaxis-a-survey-of-dental-practitioners
#19
Leah S Spittle, Kathleen B Muzzin, Patricia R Campbell, Janice P DeWald, Francisco Rivera-Hidalgo
AIM: Antibiotic prophylaxis guidelines have been developed for health care and dentistry. The authors examined whether dentists were following the 2007 American Heart Association (AHA) and the 2012 American Association of Orthopaedic Surgeons (AAOS) recommendations for antibiotic prophylaxis. MATERIALS AND METHODS: A survey was sent to 600 dentists in the south-central region of the United States. The survey examined dentists' prescribing practices for patients with cardiac and prosthetic joint replacements, antibiotic regimen prescribed, confidence in their prescription decisions, and dentistry's contribution to antibiotic resistance...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28711966/modified-single-patch-technique-versus-two-patch-technique-for-the-repair-of-complete-atrioventricular-septal-defect-a-meta-analysis
#20
Dongxu Li, Qiang Fan, Tomoyuki Iwase, Yasutaka Hirata, Qi An
Technical selection for surgical repair of complete atrioventricular septal defect (CAVSD) still remains controversial. This meta-analysis aimed to compare the modified single-patch (MP) technique with the two-patch (TP) technique for patients with CAVSD. Relevant studies comparing the MP technique with the TP technique were identified through a literature search using MEDLINE, EMBASE, Google Scholar, Cochrane Library, and the China National Knowledge Infrastructure databases. The variables were ventricular septal defect (VSD) size, cardiopulmonary bypass (CBP) time, aortic cross-clamp (ACC) time, intensive care unit stay, hospital stay, and other outcomes involving mortality, left ventricular outflow tract obstruction, atrioventricular valve regurgitation, residual septal shunt, atrioventricular block, and reoperation...
July 15, 2017: Pediatric Cardiology
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