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On-X heart valve

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https://www.readbyqxmd.com/read/29036978/-clinical-features-and-surgical-treatment-effect-of-patients-with-cardiac-cavernous-hemangioma
#1
Q L Yang, B Tang, X H Zhou, J P Wang, H Y Wang, S Y Wang
Objective: To investigate the clinical features and surgical treatment effect of patients with cardiac cavernous hemangioma. Methods: Clinical data of 9 patients (5 male, aged from 4 to 53 years old) with cardiac cavernous hemangioma, who underwent surgical treatment from November 2002 to March 2015 and the diagnosis of cardiac cavernous hemangioma was confirmed by postoperative histological examination, were retrospectively analyzed. Effects of surgical treatment were analyzed. Results: Four patients were asymptomatic (heart murmur presented in 3 patients during physical examination)...
September 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28918980/outcomes-of-aortic-valve-replacement-according-to-surgical-approach-in-intermediate-and-low-risk-patients-a-propensity-score-analysis
#2
Corazon M Calle-Valda, Rio Aguilar, Amparo Benedicto, Anas Sarraj, Emilio Monguio, Daniel Munoz, Nieves De Antonio, Guillermo Reyes
BACKGROUND: Previous trials have shown that, among high-risk patients with aortic stenosis, survival rates are similar for transcatheter aortic-valve implantation (TAVI) and surgical aortic valve replacement. The study aimed to compare the outcomes of aortic valve replacement according to the adopted surgical approach in intermediate and low risk patients. METHODS: This is a retrospective, observational, cohort study of prospectively collected data from 421 patients undergoing isolated aortic valve replacement between 2011 and 2015...
September 6, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28906536/endomyocardial-fibrosis-in-sudan-clinical-and-echocardiographic-features
#3
Siddiq Ibrahim Khalil, Suha Khalil, Salma El Tigani, Hanan A Saad
OBJECTIVE: Endomyocardial fibrosis (EMF) is a rare disease and is often an underdiagnosed and forgotten cardiomyopathy. The objective of this study was to document the current frequency of EMF in Sudan by defining and selecting cases from patients attending the echocardiography laboratory. Additionally we aimed to create an EMF registry for Sudan. METHODS: The study started in January 2007 and is on-going. All the patients attending our echocardiography clinics in four different hospitals in Khartoum, Sudan, were included...
July 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28876686/management-of-failed-mitral-valve-replacement-the-durban-experience
#4
D Kistan, M Booysen, G Alexander, T E Madiba
BACKGROUND: Mitral valve replacement is the procedure of choice in patients with severe mitral valve disease. However, these patients are surviving longer and are thus at an increased risk of prosthesis failure or valve-related complications. METHOD: Study setting: Inkosi Albert Luthuli Central Hospital, a tertiary referral Hospital in Durban. Study population: All patients undergoing redo mechanical mitral valve replacement surgery between January 2005 and December 2014...
June 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28863206/periorbital-ecchymoses-and-breathlessness
#5
Sudip Kumar Ghosh, Biswajit Majumder, Sandip Ghosh, Dilip Kumar Das, Sharmistha Chatterjee
A 54-year-old man presented at our facility with a 3-month history of exertional breathlessness and purple blotches around his eyes. Examination revealed bilateral periorbital and perioral ecchymosis, purpuric spots along his waist, and waxy papules on his eyelids. In addition, the patient had macroglossia with nodular infiltration and irregular indentations at the lateral margin of his tongue. The patient also had a raised jugular venous pressure and prominent atrial and ventricular waves. Further examination revealed a fourth heart sound over the left ventricular apex, as well as bilateral basal rales...
September 2017: Journal of Family Practice
https://www.readbyqxmd.com/read/28847146/on-x-versus-st-jude-medical-mechanical-prosthesis-in-mitral-position-are-we-moving-forward-in-design-technology
#6
Ezzeldin A Mostafa, Ashraf A El Midany, Ahmed S Taha, Saeed R El Aasy, Ayman A Doghish, Ahmed Helmy, Sherif A Mansour, Ramy Khorshid, Hosam E Ashor, Yaser Elnahas, Mohammed Saffan
BACKGROUND: Continuous effort is still provided in designing optimal artificial heart valves with better hemodynamic function and reduced thromboembolic potential. The question is do we have moved forward toward this goal or not. METHODS: A prospective, randomized comparative study was done on 360 patients scheduled for elective mitral valve replacement. Patients were grouped into On-X group (n=180) who received On-X mechanical valve and SJM (n=180) who received St Jude mechanical valve...
July 28, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28803216/3d-2d-registration-with-superabundant-vessel-reconstruction-for-cardiac-resynchronization-therapy
#7
Daniel Toth, Maria Panayiotou, Alexander Brost, Jonathan M Behar, Christopher A Rinaldi, Kawal S Rhode, Peter Mountney
A key component of image guided interventions is the registration of preoperative and intraoperative images. Classical registration approaches rely on cross-modality information; however, in modalities such as MRI and X-ray there may not be sufficient cross-modality information. This paper proposes a fundamentally different registration approach which uses adjacent anatomical structures with superabundant vessel reconstruction and dynamic outlier rejection. In the targeted clinical scenario of cardiac resynchronization therapy (CRT) delivery, preoperative, non contrast-enhanced, MRI is registered to intraoperative, contrasted X-ray fluoroscopy...
August 5, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28425027/10-year-results-of-on-x-bileaflet-mechanical-heart-valve-in-the-aortic-position-low-target-inr-regimen-in-japanese
#8
Hideki Teshima, Masahiko Ikebuchi, Yosuke Miyamoto, Ryuta Tai, Toshikazu Sano, Yusuke Kinugasa, Hiroyuki Irie
OBJECTIVES: This study was designed to establish clinical outcomes after aortic valve replacement (AVR) with On-X bileaflet mechanical heart valve. METHODS: Between 2006 and 2014, AVR was performed to 686 patients. Of them, 78 patients using On-X valve were enrolled. The mean age was 65 ± 11 years (ranged 33-85); 65% were men; and 81% were in sinus rhythm preoperatively. Calcific or degenerative tricuspid aortic valve was present in 73%. Concomitant procedures included coronary artery bypass grafting (22%), Bentall (8%), mitral valve procedure (3%) and other (9%)...
August 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28414678/what-the-eyes-don-t-see-the-heart-does-grieve-over
#9
M Sciaudone, M Dery
INTRODUCTION: A 71 year old Peruvian woman presented with blurry vision and bilateral eye pain and had evidence of bilateral endophthalmitis on eye examination. Her past medical history was notable for multiple abdominal surgeries within the preceding months, including an incarcerated inguinal hernia repair which required an ileostomy placement, and cholecystitis requiring cholecystostomy tube placement. Over her multiple long hospitalizations, she developed bacteremia and fungemia on several occasions, with organisms including Enterobacter cloacae, Klebsiella pneumoniae, Bacteroides fragilis, Pseudomonas aeruginosa, Enterococcus faecium, and Candida albicans...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28284370/frequency-and-associated-clinical-features-of-functional-tricuspid-regurgitation-in-patients-with-chronic-atrial%C3%A2-fibrillation
#10
Susan X Zhao, Nima Soltanzad, Aravind Swaminathan, W David Ogden, Nelson B Schiller
Significant functional tricuspid regurgitation (TR) can develop in some but not all patients with chronic atrial fibrillation (AF). This study sought to identify factors likely to be involved in determining the severity of TR in patients with chronic AF. In this retrospective cohort study of adult patients referred for transthoracic echocardiography for evaluation of AF between 2004 and 2015, we identified 170 patients with chronic AF in the absence of structural or known coronary heart disease. Patients were classified into nonsevere (89 patients) versus severe TR (81 patients) groups based on a comprehensive assessment of color Doppler, spectral Doppler, and morphologic parameters of the tricuspid valve and right side of the heart...
May 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28281241/decellularized-cryopreserved-allografts-as-off-the-shelf-allogeneic-alternative-for-heart-valve-replacement-in-vitro-assessment-before-clinical-translation
#11
Laura Iop, Adolfo Paolin, Paola Aguiari, Diletta Trojan, Elisa Cogliati, Gino Gerosa
Cryopreserved allogeneic conduits are the elective biocompatible choice among currently available substitutes for surgical replacement in end-stage valvulopathy. However, degeneration occurs in 15 years in adults or faster in children, due to recipient's immunological reactions to donor's antigens. Here, human aortic valves were decellularized by TRICOL, based on Triton X-100 and sodium cholate, and submitted to standard cryopreservation (TRICOL-human aortic valves (hAVs)). Tissue samples were analyzed to study the effects of the combined procedure on original valve architecture and donor's cell removal...
March 9, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28238247/dysfunction-of-an-on-x-heart-valve-by-pannus
#12
Cipriano Abad, Stefano Urso, Elsa Gomez, Maria De la Vega
A 68-year-old woman with a history of previous double-valve replacement with On-X mechanical heart valves presented with clinical, echocardiographic and cardiac catheterization signs of obstruction of the On-X tricuspid heart valve prosthesis. The patient was successfully reoperated, but at surgery the valve was seen to be invaded by an abnormal overgrowth of pannus that blocked one of the leaflets. A small amount of non-obstructive fresh thrombus was also observed. The valve was successfully replaced with a biological heart valve prosthesis...
September 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28178293/%C3%AE-ct-of-ex-vivo-stained-mouse-hearts-and-embryos-enables-a-precise-match-between-3d-virtual-histology-classical-histology-and-immunochemistry
#13
Christian Dullin, Roser Ufartes, Emanuel Larsson, Sabine Martin, Marcio Lazzarini, Giuliana Tromba, Jeannine Missbach-Guentner, Diana Pinkert-Leetsch, Dörthe M Katschinski, Frauke Alves
The small size of the adult and developing mouse heart poses a great challenge for imaging in preclinical research. The aim of the study was to establish a phosphotungstic acid (PTA) ex-vivo staining approach that efficiently enhances the x-ray attenuation of soft-tissue to allow high resolution 3D visualization of mouse hearts by synchrotron radiation based μCT (SRμCT) and classical μCT. We demonstrate that SRμCT of PTA stained mouse hearts ex-vivo allows imaging of the cardiac atrium, ventricles, myocardium especially its fibre structure and vessel walls in great detail and furthermore enables the depiction of growth and anatomical changes during distinct developmental stages of hearts in mouse embryos...
2017: PloS One
https://www.readbyqxmd.com/read/28170357/on-x-valve-the-next-generation-aortic-valve
#14
REVIEW
Rahul Chaudhary, Jalaj Garg, Parasuram Krishnamoorthy, Neeraj Shah, Bruce A Feldman, Matthew W Martinez, Ronald Freudenberger
The On-X valve is a newer generation mechanical bileaflet valve. Its key features include the use of pure pyrolytic carbon (devoid of silicon), a length-to-diameter ratio similar to a native valve, an inlet flared orifice, a leaflet opening up to 90 degrees, a shorter leaflet closing angle, a 2-point leaflet contact, and an actuated pivot. These features have translated into increased strength, improved valve hemodynamics, reduced hemolysis, and thrombogenicity. The 2014 American Heart Association/American College of Cardiology guidelines for the management of patients with valvular heart disease recommend an international normalized ratio (INR) of 2...
March 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28121172/cost-utility-analysis-of-cardiac-rehabilitation-after-conventional-heart-valve-surgery-versus-usual-care
#15
Tina Birgitte Hansen, Ann Dorthe Zwisler, Selina Kikkenborg Berg, Kirstine Lærum Sibilitz, Lau Caspar Thygesen, Jakob Kjellberg, Patrick Doherty, Neil Oldridge, Rikke Søgaard
Background While cardiac rehabilitation in patients with ischaemic heart disease and heart failure is considered cost-effective, this evidence may not be transferable to heart valve surgery patients. The aim of this study was to investigate the cost-effectiveness of cardiac rehabilitation following heart valve surgery. Design We conducted a cost-utility analysis based on a randomised controlled trial of 147 patients who had undergone heart valve surgery and were followed for 6 months. Methods Patients were randomised to cardiac rehabilitation consisting of 12 weeks of physical exercise training and monthly psycho-educational consultations or to usual care...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27943178/early-experience-with-the-venus-p%C3%A2-valve-for-percutaneous-pulmonary-valve-implantation-in-native-outflow-tract
#16
F Garay, X Pan, Y J Zhang, C Wang, D Springmuller
INTRODUCTION: The Venus p‑valve (MedTech, Shanghai, China) is a self-expanding percutaneous heart valve designed to be implanted in a native patched right ventricle outflow tract. The worldwide clinical experience with this valve is just beginning and the results have so far been encouraging. We present our initial early experience implanting the Venus p‑valve in the native right ventricle outflow tract of patients with Tetralogy of Fallot repaired with a transannular patch. METHODS: In 10 selected patients a procedure for percutaneous pulmonary valve implantation was performed using the Venus p‑valve...
February 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/27909513/assessment-of-sinoatrial-node-function-in-patients-with-persistent-and-long-standing-persistent-forms-of-atrial-fibrillation-after-maze-iii-procedure-combined-with-mitral-valve-operation
#17
Aleksei A Kulikov, Leo A Bokeria
RESEARCH OBJECTIVE: Assessment of sinoatrial node function after Maze III procedure combined with a mitral valve operation. METHODS: 100 patients were included in the research with persistent and long-standing persistent forms of atrial fibrillation (AF) and need of operative treatment concerning valve disease. The following preoperative preparation methods were executed to all patients: Electrocardiogram in 12 standard assignments;Two-dimensional echocardiographic with assessment of systolic and diastolic functions of the left ventricle, size of the left atrium and grade of valve disease;Transesophageal echocardiography for exclusion of blood clots in the left atrium and left atrial appendage;Coronary angiography for exclusion of coronary heart disease;Computer tomography for examination of cardiac chambers and anatomic characteristics of pulmonary veins...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27855469/right-sided-heart-failure-and-extracorporeal-life-support-in-patients-undergoing-pericardiectomy-for-constrictive-pericarditis-a-risk-factor-analysis-for-adverse-outcome
#18
Erik Beckmann, Issam Ismail, Serghei Cebotari, Alexander Busse, Andreas Martens, Malakh Shrestha, Christian Kühn, Axel Haverich, Christine Fegbeutel
Background Right ventricular failure is a life-threatening postoperative complication after pericardiectomy. We conducted a retrospective study with a special emphasis on right ventricular failure. Methods Between June 1997 and September 2011, 69 patients underwent surgical pericardiectomy at our center. Mean age was 59 ( ±  15.5) years, and 49 (71%) patients were male. Causes of constrictive pericarditis included idiopathic (52%, n = 36), tuberculosis (9%, n = 6), postcardiotomy (12%, n = 8), radiation (4%, n = 3), renal insufficiency (12%, n = 8), and autoimmune disease (12%, n = 8)...
November 17, 2016: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/27642739/-an-unexpected-cause-of-dyspnea-and-degradation-of-performance
#19
Peter Seizer, Michaela Rockenstiehl, Suzanne Fateh-Moghadam, Susanne Haen, Ferruh Artunc, Martin R Müller, Azadeh Ebrahimi, Reimer Riessen, Meinrad Gawaz, Falko Fend, Michael Haap
HISTORY AND ADMISSION FINDINGS: A 55-year old man suffers from progressive, distinctive dyspnoea and physical weakness since 5 days. Due to ST-segment changes in the ECG and a positive troponin-test, the primary care physician initiates an hospitalization. INVESTIGATIONS: After admission, the laboratory tests confirm the elevated troponin-values, and show additionally elevated pro-brain-natriuric-peptide-values. The coronary angiography presents a highly reduced left ventricular function, an aortic insufficiency III° and a coronary heart disease...
September 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27540181/survival-adjusted-cancer-risks-attributable-to-radiation-exposure-from-cardiac-catheterisations-in-children
#20
MULTICENTER STUDY
Richard W Harbron, Claire-Louise Chapple, John J O'Sullivan, Kate E Best, Amy Berrington de González, Mark S Pearce
OBJECTIVES: To estimate the risk of developing cancer in relation to the typical radiation doses received from a range of X-ray guided cardiac catheterisations in children, taking variable survival into account. METHODS: Radiation doses were estimated for 2749 procedures undertaken at five UK hospitals using Monte Carlo simulations. The lifetime attributable risk (LAR) of cancer incidence was estimated using models developed by the Biological Effects of Ionising Radiation committee, based on both normal life expectancy, and as a function of attained age, from 20 to 80 years, to take reduced life expectancy into account...
March 2017: Heart: Official Journal of the British Cardiac Society
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