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https://www.readbyqxmd.com/read/28453968/association-of-altered-collagen-content-and-lysyl-oxidase-expression-in-degenerative-mitral-valve-disease
#1
K-Raman Purushothaman, Meerarani Purushothaman, Irene C Turnbull, David H Adams, Anelechi Anyanwu, Prakash Krishnan, Annapoorna Kini, Samin K Sharma, William N O'Connor, Pedro R Moreno
BACKGROUND: Collagen cross-linking is mediated by lysyl oxidase (LOX) enzyme in the extracellular matrix (ECM) of mitral valve leaflets. Alterations in collagen content and LOX protein expression in the ECM of degenerative mitral valve may enhance leaflet expansion and disease severity. METHODS: Twenty posterior degenerative mitral valve leaflets from patients with severe mitral regurgitation were obtained at surgery. Five normal posterior mitral valve leaflets procured during autopsy served as controls...
April 12, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28453792/triple-valve-surgery-through-a-less-invasive-approach-early-and-mid-term-results
#2
Petar Risteski, Nadejda Monsefi, Aleksandra Miskovic, Tanja Josic, Sherife Bala, Razan Salem, Andreas Zierer, Anton Moritz
OBJECTIVES: A partial upper sternotomy has become established as a less invasive approach mainly for single and double valve surgery. This report evaluates the clinical outcomes of triple valve surgery performed through a partial upper sternotomy. METHODS: We reviewed the medical records of 37 consecutive patients (28 men, 76%) who underwent triple valve surgery through a partial upper sternotomy between 2005 and 2015. The patients' mean age was 67 ± 17 years; 27 (73%) were in New York Heart Association Class III or IV...
May 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28453437/umbilical-cord-as-human-cell-source-for-mitral-valve-tissue-engineering-venous-vs-arterial-cells
#3
Axel Malischewski, Ricardo Moreira, Luis Hurtado, Valentine Gesché, Thomas Schmitz-Rode, Stefan Jockenhoevel, Petra Mela
Around 2% of the population in developed nations are affected by mitral valve disease and available valvular replacements are not designed for the atrioventricular position. Recently our group developed the first tissue-engineered heart valve (TEHV) specifically designed for the mitral position - the TexMi valve. The valve recapitulates the main components of the native valve, i.e. annulus, asymmetric leaflets and the crucial chordae tendineae. In the present study, we evaluated the human umbilical cord as a clinically applicable cell source for the TexMi valve...
April 28, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28449514/left-ventricular-outflow-tract-obstruction-due-to-a-left-ventricular-myxoma-that-was-misidentified-as-an-accessory-mitral-valve-tissue
#4
Seung-Hoon Baek, Hee Young Kim, Hyae Jin Kim, Sang Wook Shin, Hye Jin Kim, Yun Mi Choi, Eun Ji Choi, Eunjung Chang, Hong-Sik Son
We report obstruction of the left ventricle outflow tract (LVOT) caused by cardiac myxoma that was misidentified as an accessory mitral valve tissue preoperatively. A 65-year-old woman presented with chest discomfort that persisted for 7 days. Transthoracic echocardiography (TTE) revealed a mobile, low-echogenic, balloon-shaped mass attached to the anterior mitral valve leaflet and papillary muscle, which was suspected to be an accessory mitral valve tissue. Because the mass caused LVOT obstruction and it could result in hemodynamic instability, emergency operation was performed...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449360/biologic-variability-of-cardiac-troponin-i-in-healthy-dogs-and-dogs-with-different-stages-of-myxomatous-mitral-valve-disease-using-standard-and-high-sensitivity-immunoassays
#5
Randolph L Winter, Ashley B Saunders, Sonya G Gordon, Matthew W Miller, Geoffrey T Fosgate, Jan S Suchodolski, Jörg M Steiner
BACKGROUND: Biologic variability (BV) is one aspect of interpreting changes in biomarker concentrations known to be clinically important in people with cardiac disease, but it has not been adequately addressed in dogs so far. OBJECTIVES: The purpose of the study was to determine BV of cardiac troponin I (cTnI) in healthy dogs and dogs with 3 stages of myxomatous mitral valve disease (MMVD). METHODS: Healthy dogs and dogs with 3 stages of MMVD were prospectively assigned to groups based on comprehensive clinical evaluation using current guidelines...
April 27, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28447012/erratum-to-degenerative-mitral-valve-disease-contemporary-surgical-approaches-and-repair-techniques
#6
(no author information available yet)
[This corrects the article DOI: 10.21037/acs.2016.11.03.].
March 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28446547/an-abnormal-chamber-like-structure-after-mitral-valve-replacement
#7
Yu Kang, Ritai Huang, Ben He
No abstract text is available yet for this article.
April 26, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28444570/current-mitraclip-experience-safety-and-feasibility-in-the-netherlands
#8
Z Rahhab, F A Kortlandt, J F Velu, R A J Schurer, V Delgado, P Tonino, A J Boven, B J L Van den Branden, A O Kraaijeveld, M Voskuil, J Hoorntje, M van Wely, K van Houwelingen, G B Bleeker, B Rensing, I Kardys, J Baan, J A S Van der Heyden, N M Van Mieghem
PURPOSE: Data on MitraClip procedural safety and efficacy in the Netherlands are scarce. We aim to provide an overview of the Dutch MitraClip experience. METHODS: We pooled anonymised demographic and procedural data of 1151 consecutive MitraClip patients, from 13 Dutch hospitals. Data was collected by product specialists in collaboration with local operators. Effect on mitral regurgitation was intra-procedurally assessed by transoesophageal echocardiography. Technical success and device success were defined according to modified definitions of the Mitral Valve Academic Research Consortium (MVARC)...
April 25, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28444201/mitral-periprosthetic-leakage-contemporary-results-of-surgical-correction-at-a-single-centre%C3%A2
#9
Luca Botta, Benedetta De Chiara, Salvina Quattrocchi, Francesca Casadei, Francesco Borgia, Cristina Giannattasio, Antonella Moreo, Claudio Francesco Russo
OBJECTIVES: Mitral periprosthetic leakage (PPL) is a serious complication following valve replacement. Conflicting outcomes of surgical treatment have been reported in the presence of multiple previous cardiac operations and associated co-pathological conditions. METHODS: Sixty-five symptomatic patients (37 women, mean age 64.8 years) underwent conventional operations at our hospital from 2006 to 2015. Mitral PPL was the leading surgical indication, although associated procedures were included...
April 21, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28444178/shortening-cardioplegic-arrest-time-in-patients-undergoing-combined-coronary-and-valve-surgery-results-from-a-multicentre-randomized-controlled-trial-the-scat-trial
#10
Chris A Rogers, Radek Capoun, Lauren J Scott, Jodi Taylor, Anil Jain, Gianni D Angelini, Pradeep Narayan, M-Saadeh Suleiman, Kunal Sarkar, Raimondo Ascione
OBJECTIVES: Combined coronary artery bypass grafting and valve surgery requires a prolonged period of cardioplegic arrest (CA) predisposing to myocardial injury and postoperative cardiac-specific complications. The aim of this trial was to reduce the CA time in patients undergoing combined coronary artery bypass grafting and valve surgery and assess if this was associated with less myocardial injury and related complications. METHODS: Participants were randomized to (i) coronary artery bypass grafting performed on the beating heart with cardiopulmonary bypass support followed by CA for the valve procedure (hybrid) or (ii) both procedures under CA (conventional)...
April 24, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28444177/single-centre-experience-with-transapical-transcatheter-mitral-valve-implantation%C3%A2
#11
Gry Dahle, Kjell-Arne Rein, Arnt E Fiane
OBJECTIVES: A transcatheter heart valve technique can be used in failed mitral valve repairs with annuloplasty rings, deterioriated bioprostheses and in mitral annular calcification, all serving as 'docking stations' for balloon-expandable valves. Specially designed transcatheter mitral valve platforms are used in ongoing studies for native mitral valve regurgitation. We present our single centre experience with transcatheter mitral valve implantation-transapical approach procedures in eleven patients...
April 21, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28442150/porcine-small-intestine-submucosa-cylinder-valve-for-mitral-and-tricuspid-valve-replacement
#12
John S K Murala, Peter Sassalos, Sonal T Owens, Richard G Ohye
No abstract text is available yet for this article.
April 5, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28441848/-short-term-clinical-outcomes-and-risk-factors-associated-with-in-hospital-mortality-in-patients-undergoing-off-pump-coronary-artery-bypass-grafting
#13
K Hua, J J Sheng, R Dong
Objective: To explore short-term clinical outcomes and risk factors associated with in-hospital mortality in patients undergoing off-pump coronary artery bypass grafting (OPCABG) and establish a prediction model for in-hospital mortality. Methods: The clinical data of patients undergoing OPCABG in Beijing Anzhen Hospital between January 2014 and January 2016 was retrospectively studied. Univariate analysis and logistic regression were applied to determine the potential risk factors, and then a prediction model for mortality was confirmed...
April 25, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28441151/recent-clinical-trials-in-valvular-heart-disease
#14
Daniel Kiss, Saif Anwaruddin
PURPOSE OF REVIEW: With widespread adoption of transcatheter aortic valve replacement, there has been a change in the approach to management of valvular heart disease. New interest has taken hold in transcatheter therapies for valvular heart disease, as well as research into pathophysiology and progression of disease. Additionally, several key trials have further refined our understanding of surgical management of valvular heart disease. This review will elucidate recent clinical trial data leading to changes in practice...
April 24, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28437342/left-ventricular-mechanics-assessed-by-2-dimensional-speckle-tracking-echocardiography-in-children-and-adolescents-with-idiopathic-scoliosis
#15
Shujuan Li, Junlin Yang, Ling Zhu, Yunquan Li, Huimin Peng, Yuese Lin, Xuandi Li, Zifang Huang, Huishen Wang
STUDY DESIGN: A retrospective review of data collected prospectively. OBJECTIVE: The study aimed to assess the possible effects of idiopathic scoliosis on left ventricular (LV) myocardial performance in children and adolescent patients. SUMMARY OF BACKGROUND DATA: Spine anomaly may impair cardiorespiratory function. It has been confirmed that respiratory function decreased in patients with scoliosis. However, limited study of the effect of scoliosis on heart function has been published, and no assessment of myocardial deformation of these patients has been reported to our knowledge...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28436306/cardiac-magnetic-resonance-imaging-has-limited-additional-yield-in-cryptogenic-stroke-evaluation-after-transesophageal-echocardiography
#16
Ava L Liberman, Rizwan E Kalani, Jessie Aw-Zoretic, Matthew Sondag, Vistasp J Daruwalla, Sumeet S Mitter, Richard Bernstein, Jeremy D Collins, Shyam Prabhakaran
Background The use of cardiac magnetic resonance imaging is increasing, but its role in the diagnostic work-up following ischemic stroke has received limited study. We aimed to explore the added yield of cardiac magnetic resonance imaging to identify cardio-aortic sources not detected by transesophageal echocardiography among patients with cryptogenic stroke. Methods A retrospective single-center cohort study was performed from 01 January 2009 to 01 March 2013. Consecutive patients who had both a stroke protocol cardiac magnetic resonance imaging and a transesophageal echocardiography preformed during a single hospitalization were included...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28434658/feasibility-of-ultrasound-based-computational-fluid-dynamics-as-a-mitral-valve-regurgitation-quantification-technique-comparison-with-2-d-and-3-d-proximal-isovelocity-surface-area-based-methods
#17
Muhammad Jamil, Omar Ahmad, Kian Keong Poh, Choon Hwai Yap
Current Doppler echocardiography quantification of mitral regurgitation (MR) severity has shortcomings. Proximal isovelocity surface area (PISA)-based methods, for example, are unable to account for the fact that ultrasound Doppler can measure only one velocity component: toward or away from the transducer. In the present study, we used ultrasound-based computational fluid dynamics (Ub-CFD) to quantify mitral regurgitation and study its advantages and disadvantages compared with 2-D and 3-D PISA methods. For Ub-CFD, patient-specific mitral valve geometry and velocity data were obtained from clinical ultrasound followed by 3-D CFD simulations at an assumed flow rate...
April 20, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28434140/radiation-therapy-for-recurrent-cardiac-undifferentiated-pleomorphic-sarcoma-after-three-operations
#18
Kazunobu Hirooka, Masahiro Oonuki, Susumu Manabe, Daisuke Hiraoka, Takashi Yasukawa, Keiko Suzuki
We report the case of a 57-year-old female suffering from recurrent malignant undifferentiated pleomorphic sarcoma of the left atrium. Metastasis to the posterior mediastinum was detected upon first presentation. Incomplete resections were carried out twice before mitral valve replacement was finally performed. The tumor recurred 16 months later and was treated with radiation therapy, which has proved to be effective in bringing about tumor regression for 2 years, to date. The patient has survived for 7 years since the first surgery...
April 22, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28432156/epidemiology-of-valvular-heart-disease-in-a-swedish-nationwide-hospital-based-register-study
#19
Pontus Andell, Xinjun Li, Andreas Martinsson, Charlotte Andersson, Martin Stagmo, Bengt Zöller, Kristina Sundquist, J Gustav Smith
OBJECTIVE: Transitions in the spectrum of valvular heart diseases (VHDs) in developed countries over the 20th century have been reported from clinical case series, but large, contemporary population-based studies are lacking. METHODS: We used nationwide registers to identify all patients with a first diagnosis of VHD at Swedish hospitals between 2003 and 2010. Age-stratified and sex-stratified incidence of each VHD and adjusted comorbidity profiles were assessed...
April 21, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28431721/intra-aortic-missile-after-gunshot-wound-to-chest-an-interesting-case-of-traumatic-cardiac-injury
#20
Charles D Fraser, Lee Goeddel, Nishant D Patel, Said C Azoury, Joshua C Grimm, Rosanne B Sheinberg, Christopher M Sciortino
Missile embolus to the heart, although uncommon, is one of the most challenging scenarios in trauma. We describe a 36-year-old man who presented with a gunshot wound to the left chest and a chest x-ray revealing a foreign body in the mediastinum. A median sternotomy was performed and an injury to the left ventricle was identified. After intraoperative echocardiography and fluoroscopy confirmed a foreign body in the aortic root, cardiopulmonary bypass was implemented. A bullet was retrieved from the noncoronary sinus of the aortic valve...
May 2017: Annals of Thoracic Surgery
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