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Prosthetic heart valve

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https://www.readbyqxmd.com/read/29020360/epidemiology-clinical-features-and-outcome-of-infective-endocarditis-due-to-abiotrophia-spp-and-granulicatella-spp-report-of-76-cases-2000-2015
#1
Adrián Téllez, Juan Ambrosioni, Jaume Llopis, Juan M Pericàs, Carles Falces, Manel Almela, Cristina Garcia de la Mària, Marta Hernandez-Meneses, Bàrbara Vidal, Elena Sandoval, Eduard Quintana, David Fuster, José M Tolosana, Francesc Marco, Asunción Moreno, José M Miro
Background: Infective endocarditis (IE) caused by Abiotrophia (ABI) and Granulicatella (GRA) is poorly studied. This work aims to describe and compare the main features of ABI and GRA IE. Methods: We performed a retrospective study of 12 IE institutional cases of GRA or ABI and of 64 cases published in the literature (overall, 38 ABI and 38 GRA IE cases). Results: ABI/GRA IE represented 1.51% of IE cases in our institution between 2000-2015, compared to 0...
August 19, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29018980/phonographic-detection-of-mechanical-heart-valve-thrombosis
#2
Simone Tosoni, Vincenzo Tarzia, Andrea Colli, Gino Gerosa, Andrea Bagno
The formation of thrombotic deposits affects the functionality of mechanical prosthetic heart valves; as a consequence, mechanical valves thrombosis needs early diagnosis to prevent thromboembolic events. This paper compares the acoustic signals produced by two commercial bileaflet mechanical heart valves in the closing phase to detect the presence of thrombi. The closing sounds were recorded in vitro by means of a phonocardiographic device under different hydrodynamic conditions. Thrombotic deposits of different weight and shape were applied onto the valve leaflet and the annular housing, until the movement of one leaflet was completely blocked...
October 10, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/28991051/association-between-cardiac-surgery-and-mortality-among-patients-with-infective-endocarditis-complicated-by-sepsis-and-septic-shock
#3
Vladimir Krajinovic, Stipe Ivancic, Petar Gezman, Bruno Barsic
BACKGROUND: Sepsis and septic shock are common presentations of infective endocarditis (IE), but little is known about clinical characteristics in this group of patients, use of surgical treatment, and their associations with outcome. We sought to determine the influence of cardiac surgery (CS) on the outcome of patients with IE in different stages of sepsis severity. METHODS: Two hundred ninety four patients with definite IE native or prosthetic valve IE admitted between 2000 and 2011...
October 4, 2017: Shock
https://www.readbyqxmd.com/read/28982562/prosthetic-mitral-surgical-valve-in-transcatheter-aortic-valve-replacement%C3%A2-recipients-a-multicenter-analysis
#4
Ignacio J Amat-Santos, Carlos Cortés, Luis Nombela Franco, Antonio J Muñoz-García, Jose Suárez De Lezo, Enrique Gutiérrez-Ibañes, Vicenç Serra, Mariano Larman, Raúl Moreno, Jose M De La Torre Hernandez, Rishi Puri, Pilar Jimenez-Quevedo, José M Hernández García, Juan H Alonso-Briales, Bruno García, Dae-Hyun Lee, Paol Rojas, Teresa Sevilla, Renier Goncalves, Silvio Vera, Itziar Gómez, Josep Rodés-Cabau, José A San Román
OBJECTIVES: The aim of this study was to determine the prognosis and specific complications of patients with prosthetic mitral valves (PMVs) undergoing transcatheter aortic valve replacement (TAVR). BACKGROUND: TAVR is performed relatively often in patients with PMVs, but specific risks are not well described. METHODS: A multicenter analysis was conducted, including patients with severe symptomatic aortic stenosis who underwent TAVR at 10 centers...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28982560/surgery-versus-transcatheter-interventions-for-significant-paravalvular%C3%A2-prosthetic-leaks
#5
Xavier Millán, Ismail Bouhout, Anna Nozza, Karla Samman, Louis-Mathieu Stevens, Yoan Lamarche, Antonio Serra, Anita W Asgar, Ismail El-Hamamsy, Raymond Cartier, Michel Pellerin, Stephane Noble, Phillipe Demers, Reda Ibrahim, E Marc Jolicœur, Denis Bouchard
OBJECTIVES: This study sought to assess the relative merit of surgical correction (SC) versus transcatheter reduction on long-term outcomes in patients with significant paravalvular leak (PVL) refractory to medical therapy. BACKGROUND: PVL is the most frequent dysfunction following prosthetic valve replacement. Although repeat surgery is the gold standard, transcatheter reduction (TR) of PVL has been associated with reduced mortality. METHODS: From 1994 to 2014, 231 patients underwent SC (n = 151) or TR (n = 80) PVL correction...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28982556/early-outcomes-of-percutaneous-transvenous-transseptal-transcatheter-valve-implantation-in-failed-bioprosthetic-mitral-valves-ring-annuloplasty-and%C3%A2-severe-mitral-annular-calcification
#6
Mackram F Eleid, Brian K Whisenant, Allison K Cabalka, Mathew R Williams, Mohammed Nejjari, David Attias, Neil Fam, Nicholas Amoroso, Thomas A Foley, Peter M Pollak, Oluseun O Alli, Sorin V Pislaru, Sameh M Said, Joseph A Dearani, Charanjit S Rihal
OBJECTIVES: The aim of this study was to examine 1-year outcomes of transseptal balloon-expandable transcatheter heart valve implantation in failed mitral bioprosthesis, ring annuloplasty, and mitral annular calcification (MAC). BACKGROUND: Immediate outcomes following transseptal mitral valve implantation in failed bioprostheses are favorable, but data on subsequent outcomes are lacking. METHODS: Percutaneous transseptal implantation of balloon-expandable transcatheter heart valves was performed in 87 patients with degenerated mitral bioprostheses (valve in valve [VIV]) (n = 60), previous ring annuloplasty (valve in ring) (n = 15), and severe MAC (valve in MAC) (n = 12)...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28980492/computational-methods-for-the-aortic-heart-valve-and-its-replacements
#7
Rana Zakerzadeh, Ming-Chen Hsu, Michael S Sacks
Replacement with a prosthetic device remains a major treatment option for the patients suffering from heart valve disease, with prevalence growing resulting from an ageing population. While the most popular replacement heart valve continues to be the bioprosthetic heart valve (BHV), its durability remains limited. There is thus a continued need to develop a general understanding of the underlying mechanisms limiting BHV durability to facilitate development of a more durable prosthesis. In this regard, computational models can play a pivotal role as they can evaluate our understanding of the underlying mechanisms and be used to optimize designs that may not always be intuitive...
October 5, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28974508/recurrent-prosthetic-heart-valve-thrombosis-secondary-to-eosinophilia-a-missed-diagnosis
#8
Nitish Rai, Shyam S Kothari
Prosthetic heart valve thrombosis (PHVT) is a major cause of morbidity and mortality in patients with mechanical heart valves. We present a case of recurrent PHVT associated with eosinophilia. A 17-year-old girl underwent aortic and mitral valve replacement for rheumatic heart disease. Over a period of 4 years, she had four episodes of PHVT despite oral anticoagulation with adequate INR. Her investigations revealed eosinophilia which was missed during the previous episodes. No further episodes of PHVT occurred after treatment of eosinophilia with steroids on limited follow-up...
October 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28971093/antimicrobial-peptides-in-biomedical-device-manufacturing
#9
REVIEW
Martijn Riool, Anna de Breij, Jan W Drijfhout, Peter H Nibbering, Sebastian A J Zaat
Over the past decades the use of medical devices, such as catheters, artificial heart valves, prosthetic joints, and other implants, has grown significantly. Despite continuous improvements in device design, surgical procedures, and wound care, biomaterial-associated infections (BAI) are still a major problem in modern medicine. Conventional antibiotic treatment often fails due to the low levels of antibiotic at the site of infection. The presence of biofilms on the biomaterial and/or the multidrug-resistant phenotype of the bacteria further impair the efficacy of antibiotic treatment...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28966103/a-whole-heart-motion-correction-algorithm-effects-on-ct-image-quality-and-diagnostic-accuracy-of-mechanical-valve-prosthesis-abnormalities
#10
Young Joo Suh, Young Jin Kim, Jin Young Kim, Suyon Chang, Dong Jin Im, Yoo Jin Hong, Byoung Wook Choi
BACKGROUND: We aimed to determine the effect of a whole-heart motion-correction algorithm (new-generation snapshot freeze, NG SSF) on the image quality of cardiac computed tomography (CT) images in patients with mechanical valve prostheses compared to standard images without motion correction and to compare the diagnostic accuracy of NG SSF and standard CT image sets for the detection of prosthetic valve abnormalities. METHODS: A total of 20 patients with 32 mechanical valves who underwent wide-coverage detector cardiac CT with single-heartbeat acquisition were included...
September 21, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28965189/resumption-of-anticoagulation-after-intracranial-hemorrhage
#11
REVIEW
Ivan Rocha Ferreira da Silva, Jennifer A Frontera
Anticoagulation is a vital therapy in a number of different disease processes, and is strongly recommended for the prevention of stroke in patients with atrial fibrillation and/or with mechanical prosthetic heart valves. Studies involving patients on oral anticoagulants (OACs) have revealed that ICH can occur eight times more frequently in this population, with an annual estimated incidence of 0.25 to 1.1%. The decision of whether and when to resume anticoagulation following intracranial hemorrhage is challenging and requires an assessment of associated risks and benefits...
September 30, 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28951083/rarity-of-invasiveness-in-right-sided-infective-endocarditis
#12
Syed T Hussain, Nabin K Shrestha, James Witten, Steven M Gordon, Penny L Houghtaling, Jens Tingleff, José L Navia, Eugene H Blackstone, Gösta B Pettersson
OBJECTIVE: The rarity of invasiveness of right-sided infective endocarditis (IE) compared with left-sided has not been well recognized and evaluated. Thus, we compared invasiveness of right- versus left-sided IE in surgically treated patients. PATIENTS AND METHODS: From January 2002 to January 2015, 1292 patients underwent surgery for active IE, 138 right-sided and 1224 left-sided. Among patients with right-sided IE, 131 had tricuspid and 7 pulmonary valve IE; 12% had prosthetic valve endocarditis...
August 16, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28950312/normal-values-for-doppler-echocardiographic-assessment-of-prosthetic-valve-function-after-transcatheter-aortic-valve-replacement-a-systematic-review-and-meta-analysis
#13
Max-Paul Winter, Martin Zbiral, Antonia Kietaibl, Patrick Sulzgruber, Johannes Kastner, Raphael Rosenhek, Thomas Binder, Irene M Lang, Georg Goliasch
Transcatheter aortic valve replacement has emerged as valuable treatment modality for patients with severe aortic stenosis and an unacceptable risk/benefit ratio for open heart surgery, but particularities specific to TAVR and a rapidly growing number of available TAVR prosthesis make post-procedural assessment of valve function challenging. Aim of the present analysis was to collect and pool all available data currently in the literature regarding normal doppler values for transcatheter prosthetic heart valves and to provide a comprehensive overview...
September 6, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28943263/definition-of-indicators-of-the-appropriateness-of-oral-anticoagulant-prescriptions-in-hospitalized-adults-literature-review-and-consensus-pacha-study
#14
Aurélie Petit-Monéger, Frantz Thiessard, Pernelle Noize, Driss Berdaï, Vianney Jouhet, Florence Saillour-Glénisson, Louis-Rachid Salmi
BACKGROUND: Indicators of the appropriateness of oral anticoagulant prescriptions are lacking, despite the major contribution they could make to improve quality of care. AIM: To identify and select such indicators according to their utility and operational implementation. METHODS: A literature review was conducted to identify indicators of the appropriateness of oral anticoagulant prescriptions according to the guidelines of health authorities and European learned societies...
September 21, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28935328/valve-in-valve-transcatheter-aortic-valve-implantation-a-novel-approach-to-treat-paravalvular-leak
#15
Pranav Loyalka, Kelsey B Montgomery, Tom C Nguyen, Richard W Smalling, Melissa Howe, Keshava Rajagopal
Enlarging or "cracking" a surgical stented bioprosthetic valve during valve-in-valve transcatheter aortic valve implantation (TAVI) increases orifice area, reducing transvalvular energy losses. We demonstrate that TAVI with valve cracking can be used to treat paravalvular leak (PVL) while providing optimal aortic valve physiology. A 61-year-old woman with a history of aortic valve replacement with a stented bioprosthesis presented with heart failure. Transthoracic echocardiography revealed severe prosthetic aortic valve stenosis with PVL and severe regurgitation...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28917497/comparison-of-outcome-of-possible-versus-definite-infective-endocarditis-involving-prosthetic-or-bioprosthetic-heart-valves
#16
Laurent Fauchier, Lauriane Pericart, Thierry Bourguignon, Thibaud Genet, Arnaud Bisson, Anne Bernard, Louis Bernard, Dominique Babuty
The objectives of this study were to describe and compare the clinical characteristics and outcomes of patients with definite and possible infective endocarditis (IE) involving prosthetic heart valve, and to identify prognostic factors for long-term mortality, using data from an unselected cohort of consecutive patients. We studied data from 133 consecutive patients with IE involving prosthetic heart valve seen in an academic institution between 1990 and 2012. Patients were classified according to the modified Duke criteria for IE: patients with possible IE (n = 47, 35%) and patients with definite IE (n = 86, 65%)...
August 7, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28914661/percutaneous-aortic-leak-closure-in-a-small-and-frail-annulus-after-double-heart-valve-replacement
#17
Guglielmo Saitto, Paolo Nardi, Gian P Ussia, Domenico Sergi, Paolo Prati, Marco Russo, Francesco Romeo, Giovanni Ruvolo
: Paravalvular leak (PVL) is an uncommon but serious complication associated with the implantation of prosthetic valves. Following aortic valve replacement, up to 5% of patients affected by PVL develop clinical symptoms of heart failure, hemolysis or both. Percutaneous treatment of PVL has emerged instead of conventional surgery, as a well tolerated and less invasive procedure but remains a challenge. We present the case of a young woman with mechanical aortic and mitral prostheses, who presented surgical aortic PVL caused by a serious frailty of native annulus, became symptomatic after 5 months and was successfully percutaneously treated with an Amplatzer Duct Occluder device...
September 12, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28882817/dental-procedures-antibiotic-prophylaxis-and-endocarditis-among-people-with-prosthetic-heart-valves-nationwide-population-based-cohort-and-a-case-crossover-study
#18
Sarah Tubiana, Pierre-Olivier Blotière, Bruno Hoen, Philippe Lesclous, Sarah Millot, Jérémie Rudant, Alain Weill, Joel Coste, François Alla, Xavier Duval
Objective To assess the relation between invasive dental procedures and infective endocarditis associated with oral streptococci among people with prosthetic heart valves.Design Nationwide population based cohort and a case crossover study.Setting French national health insurance administrative data linked with the national hospital discharge database.Participants All adults aged more than 18 years, living in France, with medical procedure codes for positioning or replacement of prosthetic heart valves between July 2008 and July 2014...
September 7, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28876686/management-of-failed-mitral-valve-replacement-the-durban-experience
#19
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/28874307/prosthetic-mitral-valve-paravalvular-leak-a-problem-that-requires-dexterity
#20
James W Hansen, Gautam Gadey, Thomas C Piemonte
Prosthetic valve paravalvular leak (PVL) is a known and relatively common complication of surgical valve replacement, which may lead to significant morbidity. Patients with significant mitral valve replacement (MVR) PVL typically present with symptoms of heart failure and elevated filling pressures or with hemolytic anemia. Percutaneous closure of these leaks has become the preferred therapy. Percutaneous closure of MVR PVL can be technically challenging, given the anatomy of the approach (trans-septal, trans-apical), the level of associated comorbidities and the geographic location of the paravalvular defect...
July 24, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
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