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Prosthetic heart valve

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https://www.readbyqxmd.com/read/27876696/stroke-prevention-strategies-in-patients-with-atrial-fibrillation-and-heart-valve-abnormalities-perceptions-of-valvular-atrial-fibrillation-results-of-the-european-heart-rhythm-association-survey
#1
Tatjana S Potpara, Gregory Y H Lip, Torben B Larsen, Antonio Madrid, Dan Dobreanu, Ewa Jędrzejczyk-Patej, Nikolaos Dagres
The purpose of this European Heart Rhythm Association (EHRA) Survey was to assess the perceptions of 'valvular' atrial fibrillation (AF) and management of AF patients with various heart valve abnormalities in daily clinical practice in European electrophysiology (EP) centres. Questionnaire survey was sent via the Internet to the EHRA-EP Research Network Centres. Of the 52 responding centres, 42 (80.8%) were university hospitals. Choosing the most comprehensive definition of valvular AF, a total of 49 centres (94...
October 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27873180/pledget-armed-sutures-affect-the-haemodynamic-performance-of-biologic-aortic-valve-substitutes-a-preliminary-experimental-and-computational-study
#2
Claudio Capelli, Chiara Corsini, Dario Biscarini, Francesco Ruffini, Francesco Migliavacca, Alfred Kocher, Guenther Laufer, Andrew M Taylor, Silvia Schievano, Martin Andreas, Gaetano Burriesci, Claus Rath
Surgical aortic valve replacement is the most common procedure of choice for the treatment of severe aortic stenosis. Bioprosthetic valves are traditionally sewed-in the aortic root by means of pledget-armed sutures during open-heart surgery. Recently, novel bioprostheses which include a stent-based anchoring system have been introduced to allow rapid implantation, therefore reducing the duration and invasiveness of the intervention. Different effects on the hemodynamics were clinically reported associated with the two technologies...
November 21, 2016: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/27873034/on-the-mechanics-of-transcatheter-aortic-valve-replacement
#3
Lakshmi P Dasi, Hoda Hatoum, Arash Kheradvar, Ramin Zareian, S Hamed Alavi, Wei Sun, Caitlin Martin, Thuy Pham, Qian Wang, Prem A Midha, Vrishank Raghav, Ajit P Yoganathan
Transcatheter aortic valves (TAVs) represent the latest advances in prosthetic heart valve technology. TAVs are truly transformational as they bring the benefit of heart valve replacement to patients that would otherwise not be operated on. Nevertheless, like any new device technology, the high expectations are dampened with growing concerns arising from frequent complications that develop in patients, indicating that the technology is far from being mature. Some of the most common complications that plague current TAV devices include malpositioning, crimp-induced leaflet damage, paravalvular leak, thrombosis, conduction abnormalities and prosthesis-patient mismatch...
November 21, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27866581/thrombosis-hypercoagulable-states-and-anticoagulants
#4
REVIEW
Marie A Hollenhorst, Elisabeth M Battinelli
Patients with derangements of secondary hemostasis resulting from inherited or acquired thrombophilias are at increased risk of venous thromboemboli (VTE). Evaluation of a patient with suspected VTE proceeds via evidence-based algorithms that involve computing a pretest probability based on the history and physical examination; this guides subsequent work-up, which can include D dimer and/or imaging. Testing for hypercoagulable disorders should be pursued only in patients with VTE with an increased risk for an underlying thrombophilia...
December 2016: Primary Care
https://www.readbyqxmd.com/read/27862027/surgical-transapical-approach-for-prosthetic-mitral-paravalvular-leak-closure-early-results
#5
Unal Aydin, Onur Sen, Ersin Kadirogullari, Burak Onan, Aydin Yildirim, Ihsan Bakir
The objective is to demonstrate safety and early clinical results of surgical transapical closure of paravalvular leaks (PVLs) following mitral valve replacement in significant regurgitation. Between March 2014 and February 2015, 12 patients (mean age 52.1 ± 6.0 years, 66.6% male) with severe symptomatic mitral PVLs (n = 13) underwent surgical transapical closure procedure through left mini-thoracotomy. All patients were in NYHA functional class III-IV and median logistic EuroSCORE was 24.2 ± 6...
November 8, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27848065/impact-of-valvular-heart-disease-on-oral-anticoagulant-therapy-in-non-valvular-atrial-fibrillation-results-from-the-ramses-study
#6
Özcan Başaran, Volkan Dogan, Osman Beton, Mehmet Tekinalp, Ahmet Çağrı Aykan, Ezgi Kalaycıoğlu, Ismail Bolat, Onur Taşar, Özgen Şafak, Macit Kalçık, Mehmet Yaman, Sinan İnci, Bernas Altıntaş, Sedat Kalkan, Cevat Kırma, Murat Biteker
The definition of non-valvular atrial fibrillation (NVAF) is controversial. We aimed to assess the impact of valvular heart disease on stroke prevention strategies in NVAF patients. The RAMSES study was a multicenter and cross-sectional study conducted on NVAF patients (ClinicalTrials.gov identifier NCT02344901). The study population was divided into patients with significant valvular disease (SVD) and non-significant valvular disease (NSVD), whether they had at least one moderate valvular disease or not. Patients with a mechanical prosthetic valve and mitral stenosis were excluded...
November 15, 2016: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/27818021/therapeutic-strategy-for-functional-tricuspid-regurgitation-in-patients-undergoing-mitral-valve-repair-for-severe-mitral-regurgitation
#7
Takeshi Kitai, Yutaka Furukawa, Kenta Murotani, Chayakrit Krittanawong, Shuichiro Kaji, Tadaaki Koyama, Yukikatsu Okada
BACKGROUND: The aim of this study was to determine optimal patient selection and selection of a prosthetic ring size for tricuspid valve (TV) repair at the time of mitral valve (MV) repair. METHODS: We prospectively enrolled 167 consecutive patients undergoing MV repair. TV repair was indicated if patients had at least one of the following conditions representing tricuspid annular dilatation: (1) tricuspid regurgitation (TR)≥moderate, (2) history of right heart failure, (3) atrial fibrillation, and (4) pulmonary hypertension...
October 25, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27801307/pregnancy-related-cardiovascular-complications-case-presentation-and-review-of-literature
#8
Hasan Baki Altinsoy, Ozkan Alatas, Salih Colak, Hakan Atalay, Omer Faruk Dogan
BACKGROUND: Cardiovascular complications that can cause severe catastrophic outcomes for both the mother and the fetus are rarely seen during pregnancy. Time to diagnosis is often delayed by a low degree of suspicion and atypical presentation. We report surgical strategies in three pregnant women with cardiovascular complications. METHODS: A retrospective search from 2009 to 2016 identified three pregnant women who underwent urgent cardiac surgery. We used extracorporeal circulation (ECC) without cesarean section with careful follow-up of the fetuses during the perioperative and postoperative period...
October 31, 2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/27798368/estimated-glomerular-filtration-rate-within-the-normal-or-mildly-impaired-range-and-incident-non-valvular-atrial-fibrillation-results-from-a-population-based-cohort-study
#9
Alon Eisen, Moti Haim, Moshe Hoshen, Ran D Balicer, Orna Reges, Morton Leibowitz, Zaza Iakobishvili, David Hasdai
BACKGROUND: Lower estimated glomerular filtration rate, in particular in the significant renal impairment range (estimated glomerular filtration rate <60 ml/min/1.73 m(2)), is associated with incident atrial fibrillation. This association is less established within the normal or mildly impaired estimated glomerular filtration rate range. METHODS: Using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) estimated glomerular filtration rate formula, we identified ambulatory adults (>22 years old) without rheumatic heart disease or prosthetic valves and with 60 ml/min/1...
October 26, 2016: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27789941/nanopatterned-acellular-valve-conduits-drive-the-commitment-of-blood-derived-multipotent-cells
#10
Rosa Di Liddo, Paola Aguiari, Silvia Barbon, Thomas Bertalot, Amit Mandoli, Alessia Tasso, Sandra Schrenk, Laura Iop, Alessandro Gandaglia, Pier Paolo Parnigotto, Maria Teresa Conconi, Gino Gerosa
Considerable progress has been made in recent years toward elucidating the correlation among nanoscale topography, mechanical properties, and biological behavior of cardiac valve substitutes. Porcine TriCol scaffolds are promising valve tissue engineering matrices with demonstrated self-repopulation potentiality. In order to define an in vitro model for investigating the influence of extracellular matrix signaling on the growth pattern of colonizing blood-derived cells, we cultured circulating multipotent cells (CMC) on acellular aortic (AVL) and pulmonary (PVL) valve conduits prepared with TriCol method and under no-flow condition...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27761871/the-crucial-role-of-cardiac-imaging-in-transcatheter-aortic-valve-replacement-tavr-pre-and-post-procedural-assessment
#11
Saif Al-Najafi, Frank Sanchez, Stamatios Lerakis
Transcatheter valve interventions have emerged as one of the most important developments in structural heart disease over the past 20 years. Initially, these interventions were directed at patients with severe aortic stenosis and high surgical risk; however, their applications have extended to involve other native valves' pathologies, degenerated prosthetic valves, as well as patients of lower surgical risk. In this article, we discuss the importance of cardiac imaging in transcatheter aortic valve replacement (TAVR) by exploring the current practices, guidelines, and recommendations with the supporting data...
December 2016: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27759926/paravalvular-leaks-one-size-or-shape-doesn-t-always-fit-all
#12
Andre Paixao, Mehmet Cilingiroglu
Paravalvular leak (PVL) remains as uncommon but serious complication after surgical prosthetic valve implantation. PVL when associated which congestive heart failure, hemolytic anemia, or infective endocarditis may require percutaneous treatment. High-surgical risk is common in this population. Dedicated PVL devices are lacking often limiting optimal treatment.
October 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27737409/fungal-endocarditis
#13
Shi-Min Yuan
Fungal endocarditis is a rare and fatal condition. The Candida and Aspergillus species are the two most common etiologic fungi found responsible for fungal endocarditis. Fever and changing heart murmur are the most common clinical manifestations. Some patients may have a fever of unknown origin as the onset symptom. The diagnosis of fungal endocarditis is challenging, and diagnosis of prosthetic valve fungal endocarditis is extremely difficult. The optimum antifungal therapy still remains debatable. Treating Candida endocarditis can be difficult because the Candida species can form biofilms on native and prosthetic heart valves...
May 2016: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/27737407/anticoagulation-quality-and-complications-of-using-vitamin-k-antagonists-in-the-cardiac-surgery-outpatient-clinic
#14
Mário Augusto Cray da Costa, Lucas Kraeski Krum, Juliana da Silva Geraldino, Marcelo Derbli Schafranski, Ricardo Zanetti Gomes, Elise Souza Dos Santos Reis
Introduction: In patients with mechanical prosthetic heart valves or atrial fibrillation requiring anticoagulation to prevent thromboembolic events, several factors influence adherence and anticoagulation complications. Objective: To evaluate the factors that interfere with the quality and complications of anticoagulation with vitamin K antagonists. Methods: A retrospective cohort study of 100 patients, in the period from 2011 to 2014, was performed...
May 2016: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/27713859/chronic-q-fever-a-missed-prosthetic-valve-endocarditis-possibly-for-years
#15
Rita Veiga Ferraz, Marta Andrade, Filipa Silva, Paulo Andrade, Cláudia Carvalho, José Pinheiro Torres, Jorge Almeida, António Sarmento, Lurdes Santos
Chronic Coxiella burnetii endocarditis usually develops in people with underlying heart disease and accounts for 60-70% of chronic Q fever. Onset is generally insidious and manifestations are atypical. The authors report a case of Coxiella burnetii prosthetic valve endocarditis in a 53 years- old patient with recurrent mechanical valve dehiscence on mitral position. He lived in a rural area with sheep and goats on the surroundings. During a 9 year- period, he was submitted to three cardiac mitral valve surgeries two of which with no Q fever diagnosis suspicion...
2016: IDCases
https://www.readbyqxmd.com/read/27670966/valvular-heart-disease-and-pregnancy-part-ii-management-of-prosthetic-valves
#16
Catriona J Bhagra, Rohan D'Souza, Candice K Silversides
No abstract text is available yet for this article.
September 26, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27666180/anticoagulation-after-heart-valve-replacement-or-transcatheter-valve-implantation
#17
Anthony P Carnicelli, Patrick T O'Gara, Robert P Giugliano
Valvular heart disease is prevalent and represents a significant contributor to cardiac morbidity and mortality. Several options for valve replacement exist, including surgical replacement and transcatheter valve implantation. Prosthetic valves lead to increased risk of thromboembolic disease; therefore, antithrombotic therapy after valve replacement is indicated. For patients with mechanical prostheses, indefinite vitamin K antagonist and antiplatelet therapy are the mainstays of treatment. There is no consensus regarding optimal antithrombotic therapy after bioprosthetic valve replacement, although vitamin K antagonist therapy of varying duration in addition to antiplatelet therapy is recommended by guidelines...
August 13, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27645963/complete-transversal-disc-fracture-in-a-bj%C3%A3-rk-shiley-delrin-mitral-valve-prosthesis-43-years-after-implantation
#18
Jose María González-Santos, María Elena Arnáiz-García, María José Dalmau-Sorlí, Jose Alfonso Sastre-Rincón, Jesús Hernández-Hernández, María Elena Pérez-Losada, Víctor Sagredo-Meneses, Javier López-Rodríguez
A patient who underwent previous implantation of a mitral valve replacement with a Björk-Shiley Delrin (BSD) mitral valve prosthesis during infancy was admitted to our institution 43 years later after an episode of syncope and cardiac arrest. Under extreme hemodynamic instability, a mitral valve prosthetic dysfunction causing massive mitral regurgitation was identified. The patient underwent an emergent cardiac operation, and a complete disc fracture with partial disc migration was found. Exceptional cases of mechanical prosthetic heart valve fracture exist...
October 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27635069/outcomes-of-transvenous-lead-extraction-for-cardiovascular-implantable-electronic-device-infections-in-patients-with-prosthetic-heart-valves
#19
Xin-Miao Huang, Hai-Xia Fu, Li Zhong, Jiang Cao, Samuel J Asirvatham, Larry M Baddour, M Rizwan Sohail, Vuyisile T Nkomo, Rick A Nishimura, Kevin L Greason, Rakesh M Suri, Paul A Friedman, Yong-Mei Cha
BACKGROUND: Lead-related or valve-related endocarditis can complicate cardiovascular implantable electronic device (CIED) infection in patients with both CIED and prosthetic valves. The objective of this study was to determine the outcomes of transvenous lead extraction for CIED infection in patients with prosthetic valves. METHODS AND RESULTS: We retrospectively screened 794 transvenous lead extraction procedures, between September 1, 2001 and August 31, 2012, at Mayo Clinic to identify patients with prosthetic valves who underwent lead extraction for infection...
September 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27629092/why-are-acute-ischemic-stroke-patients-not-receiving-iv-tpa-results-from-a-national-registry
#20
Steven R Messé, Pooja Khatri, Mathew J Reeves, Eric E Smith, Jeffrey L Saver, Deepak L Bhatt, Maria V Grau-Sepulveda, Margueritte Cox, Eric D Peterson, Gregg C Fonarow, Lee H Schwamm
OBJECTIVE: To determine patient and hospital characteristics associated with not providing IV tissue plasminogen activator (tPA) to eligible patients with acute ischemic stroke (AIS) in clinical practice. METHODS: We performed a retrospective cohort study of patients with AIS arriving within 2 hours of onset to hospitals participating in Get With The Guidelines-Stroke without documented contraindications to IV tPA from April 2003 through December 2011, comparing those who received tPA to those who did not...
October 11, 2016: Neurology
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