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Prosthetic Valve

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https://www.readbyqxmd.com/read/28633260/total-chordal-sparing-mitral-valve-replacement-in-rheumatic-disease-a-word-of-caution
#1
Samuel M Kessel, Robert B Hawkins, Leora T Yarboro, Gorav Ailawadi
Total chordal preservation is the standard for mitral valve replacement to maintain long-term left ventricular geometry. Whereas it is appropriate for functional and degenerative mitral regurgitation, the role of chordal sparing in rheumatic valve disease is less well understood, with limited evidence supporting total chordal sparing. Inasmuch as this autoimmune disease affects the subvalvular apparatus in addition to the leaflets, it can be expected to continue after surgical repair. Here we present 2 patients who experienced adverse events associated with total chordal sparing mitral replacement as a result of disease progression with rapid fibrous growth causing inflow obstruction and early prosthetic valve failure...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28631145/biaxial-mechanical-properties-of-bovine-jugular-venous-valve-leaflet-tissues
#2
Hsiao-Ying Shadow Huang, Jiaqi Lu
Venous valve incompetence has been implicated in diseases ranging from chronic venous insufficiency (CVI) to intracranial venous hypertension. However, while the mechanical properties of venous valve leaflet tissues are central to CVI biomechanics and mechanobiology, neither stress-strain curves nor tangent moduli have been reported. Here, equibiaxial tensile mechanical tests were conducted to assess the tangent modulus, strength and anisotropy of venous valve leaflet tissues from bovine jugular veins. Valvular tissues were stretched to 60% strain in both the circumferential and radial directions, and leaflet tissue stress-strain curves were generated for proximal and distal valves (i...
June 19, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28630186/loss-of-c-5-sterol-desaturase-activity-results-in-increased-resistance-to-azole-and-echinocandin-antifungals-in-a-clinical-isolate-of-candida-parapsilosis
#3
Jeffrey M Rybak, C Michael Dickens, Josie E Parker, Kelly Caudle, Kayihura Manigaba, Sarah G Whaley, Andrew Nishimoto, Arturo Luna-Tapia, Sujoy Roy, Qing Zhang, Katherine S Barker, Glen E Palmer, Thomas R Sutter, Ramin Homayouni, Nathan P Wiederhold, Steven L Kelly, P David Rogers
Among emerging non-albicans Candida species, C. parapsilosis is of particular concern as a cause of nosocomial bloodstream infections in neonatal and intensive care unit patients. While fluconazole and echinocandins are considered effective treatment of such infections, recent reports of fluconazole and echinocandin resistance in C. parapsilosis indicate a growing problem. The present study describes a novel mechanism of antifungal resistance in this organism affecting the susceptibility of azole and echinocandin antifungals in a clinical isolate obtained from a patient with prosthetic valve endocarditis...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28629781/position-paper-for-the-evaluation-and-management-of-oral-status-in-patients-with-valvular-disease-groupe-de-travail-valvulopathies-de-la-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-cardiologie-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-chirurgie-orale-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-de-parodontologie-et-d-implantologie
#4
REVIEW
Sarah Millot, Philippe Lesclous, Marie-Laure Colombier, Loredana Radoi, Clément Messeca, Mathieu Ballanger, Jean-Luc Charrier, Philippe Tramba, Stéphane Simon, Alain Berrebi, Fabien Doguet, Emmanuel Lansac, Christophe Tribouilloy, Gilbert Habib, Xavier Duval, Bernard Iung
Oral health is of particular importance in patients with heart valve diseases because of the risk of infective endocarditis. Recommendations for antibiotic prophylaxis before dental procedures have been restricted, but the modalities of oral evaluation and dental care are not detailed in guidelines. Therefore, a multidisciplinary working group reviewed the literature to propose detailed approaches for the evaluation and management of buccodental status in patients with valvular disease. Simple questions asked by a non-dental specialist may draw attention to buccodental diseases...
June 16, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28626538/septic-thrombophlebitis-with-persistent-methicillin-resistant-staphylococcus-aureus-bacteremia-and-de-novo-resistance-to-vancomycin-and-daptomycin
#5
Yael Koton, Zafrir Or, Naiel Bisharat
Persistent methicillin-resistant Staphylococcus aureus (MRSA) bacteremia is associated with significant risk of mortality, especially when it occurs while on appropriate antimicrobial therapy. We herein describe an unusual case of a patient with prosthetic aortic tissue valve, who suffered from central venous catheter related MRSA bacteremia with septic thrombus formation in the superior vena cava. MRSA bacteremia persisted despite removal of the catheter and appropriate antimicrobial therapy including vancomycin, rifampin, and daptomycin...
May 31, 2017: Infectious Disease Reports
https://www.readbyqxmd.com/read/28616349/sparing-aortic-valve-techniques
#6
Rubén Álvarez-Cabo
Prosthetic valve implantation is the most widely used therapeutic option for aortic regurgitation (AR), but complications associated with prosthetic valves, with an incidence of 3-5% patient/year, and the need for anticoagulation in mechanical valves, force us to consider aortic valve repair as an alternative to the prosthetic implant, especially in young people with many potential years of life for these complications. Aortic valve repair techniques are not excessively complicated, but there is no standardization, so they are not reproducible in all medical centers...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28615887/an-unusual-cause-of-chest-discomfort-case-report-of-oesophageal-hirudiniasis
#7
Cristóvão Figueiredo, Joana Alves, Cláudia Carvalho, António Sarmento
Hirudiniasis is caused by sanguivorous leeches feeding on mucous membranes with possible severe obstructive or haemorrhagic manifestations. Few cases have been reported in humans, and most occur in tropical countries. A seventy-year-old female patient presented to our Emergency Department (ED) with retrosternal discomfort. She was taking warfarin for a mechanical prosthetic heart valve. While in the ED, a leech was spontaneously extruded from her mouth, with symptomatic resolution. Endoscopy revealed an area of previous leech attachment in the distal oesophageal, without severe bleeding...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28611136/a-rare-case-of-mycobacterium-abscessus-subspecies-abscessus-prosthetic-valve-endocarditis-and-the-clinical-importance-of-inducible-erm-41-gene-testing
#8
Norman Beatty, Craig Brown, Tirdad Zangeneh, Mayar Al Mohajer
A 56-year-old man with a history of injection drug use and two prior episodes of native valve infective endocarditis presented with dyspnoea on exertion. Our preliminary work-up revealed bacteraemia with reported growth of 'Mycobacterium abscessus group' on multiple blood cultures. The patient was later found to have eustachian valve and prosthetic pulmonic valve endocarditis. Initially, he responded to standard antimycobacterial therapy for rapidly growing mycobacteria (RGM) with supporting laboratory susceptibilities...
June 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28610762/early-trifecta-valve-failure-report-of-a-cluster-of-cases-from-a-tertiary-care-referral-center
#9
Ankur Kalra, Hasan Rehman, Mahesh Ramchandani, Colin M Barker, Gerald M Lawrie, Ross M Reul, Michael J Reardon, Neal S Kleiman
BACKGROUND: The Trifecta valve (St Jude Medical, Inc, St Paul, Minn) was approved for commercial use by the US Food and Drug Administration in 2011. Several isolated cases have been reported since then, describing early structural valve deterioration. We report a case series of 8 Trifecta valve failures, describing patients' clinical substrate and management, and the pathologic characteristics of the explanted valves. METHODS: Trifecta valve failure occurred in 7 patients (8 valves) receiving 19-mm (n = 2), 21-mm (n = 3), 23-mm (n = 1), and 25-mm (n = 2) valves...
May 22, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28610465/successful-truncal-valve-replacement-with-a-mechanical-valve-after-bilateral-pulmonary-artery-banding
#10
Shuichi Yoshitake, Yukihiro Kaneko, Kazuki Yakuwa, Ikuya Achiwa
Surgical management of truncus arteriosus, or common arterial trunk, has expanded over the past three decades to include earlier surgical intervention, initially during infancy and now chiefly in the neonatal period. Many studies have shown that preoperative truncal valve insufficiency is an independent risk factor for mortality. We herein present the case of a five-month-old boy with severe truncal valve insufficiency who underwent repair of common arterial trunk and prosthetic replacement of the truncal valve with associated annular enlargement after initial stabilization in the newborn period via palliative bilateral pulmonary artery banding...
January 1, 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28608662/prosthetic-valve-endocarditis-caused-by-hacek-organisms-a-case-reports-and-systematic-review-of-the-literature
#11
Ha Na Choi, Ki Ho Park, Soyoung Park, Jae Min Kim, Hyun Joon Kang, Jae Hun Park, Mi Suk Lee
HACEK is a rare cause of prosthetic valve endocarditis (PVE). We describe 42-year-old male patient who presented with Aggregatibacter aphrophilus PVE and cerebral infarct. A. aphrophilus was isolated from his blood cultures as the sole pathogen, which was confirmed by subsequent 16S rRNA sequencing. He was treated with valve replacement surgery and an 8 week course of pathogen-directed antibiotic therapy and followed for 20 months without recurrence.
May 26, 2017: Infection & Chemotherapy
https://www.readbyqxmd.com/read/28592789/are-sutureless-aortic-valves-suitable-for-severe-high-risk-patients-suffering-from-active-infective-aortic-valve-endocarditis
#12
Alexander Weymann, Johanna Konertz, Michael Laule, Karl Stangl, Pascal M Dohmen
BACKGROUND Sutureless aortic valves were introduced to facilitate minimally invasive aortic valve surgery. Since sutureless aortic valves are a feasible procedure, we evaluated if any benefits could be identified in severe high-risk patients with active infective endocarditis of the aortic valve. MATERIAL AND METHODS Between April 2014 and April 2015, a total of 42 patients received a sutureless Perceval® aortic valve (Sorin Biomedica Cardio Srl, Saluggia, Italy) for different indications. Nine of these patients (median age 71 years, range 47-83 years) suffered from active infective endocarditis, including four patients with prosthetic aortic valve endocarditis...
June 8, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28592753/recent-surgical-results-for-active-endocarditis-complicated-with-perivalvular-abscess
#13
Daisuke Yoshioka, Koichi Toda, Jun-Ya Yokoyama, Ryohei Matsuura, Shigeru Miyagawa, Yukitoshi Shirakawa, Toshiki Takahashi, Taichi Sakaguchi, Hirotsugu Fukuda, Yoshiki Sawa
BACKGROUND: Surgical treatment for endocarditis patients with a perivalvular abscess is still challenging.Methods and Results:From 2009 to 2016, 470 patients underwent surgery for active endocarditis at 11 hospitals. Of these, 226 patients underwent aortic valve surgery. We compared the clinical results of 162 patients without a perivalvular abscess, 37 patients who required patch reconstruction of the aortic annulus (PR group) and 27 who underwent aortic root replacement (ARR group)...
June 8, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28589481/surgical-case-of-isolated-pulmonary-valve-endocarditis-in-a-patient-without-predisposing-factors
#14
Kyohei Hatori, Satoshi Ohki, Tamiyuki Obayashi, Kiyomitsu Yasuhara, Hanako Hirai, Takao Miki
We report a case of isolated pulmonary valve endocarditis in a 47-year-old woman without predisposing factors. She had episodes of low-grade fever and non-productive cough and was initially diagnosed with bacterial pneumonia. With antibiotic treatment, her condition improved transiently, but she had repeated respiratory events. Forty days after her first visit, she complained of severe dyspnea. Echocardiography revealed a large vegetation adhering to the pulmonary valve and she was diagnosed with isolated pulmonary valve endocarditis...
June 6, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28586598/an-unusual-pathogen-causing-native-valve-endocarditis
#15
Aneela Hussain, Nosheen Nasir, Bushra Jamil
We present the case of a gentleman who was being evaluated for restrictive lung disease and was incidentally found to have mitral valve stenosis on an HRCT. During the surgical procedure for valve replacement, he was found to have an abscess around the native mitral valve which was drained. Pus from the abscess as well as the valve tissue grew Propionibacterium acnes after holding the cultures long. The patient was treated with IV ceftriaxone with good response to therapy. While Propionibacterium acnes is known to cause prosthetic valve infections there are rare case reports with native valves...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28585029/another-potential-step-to-improve-prosthetic-heart-valve-endocarditis-imaging-with-18-f-fdg-pet-ct
#16
EDITORIAL
Thomas H Schindler
No abstract text is available yet for this article.
June 5, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28585026/standardized-uptake-values-in-fdg-pet-ct-for-prosthetic-heart-valve-endocarditis-a-call-for-standardization
#17
Asbjørn M Scholtens, Laurens E Swart, Henryk J Te Kolste, Ricardo P J Budde, Marnix G E H Lam, Hein J Verberne
BACKGROUND: The significance of and threshold values for the standardized uptake value (SUV) in FDG PET/CT to diagnose prosthetic heart valve (PHV) endocarditis (PVE) are unclear at present. METHODS: A literature search was performed in the PubMed and EMBASE medical databases, comprising the following terms: (FDG OR *fluorode* OR *fluoro-de*) AND (endocarditis OR prosthetic heart valve OR valve replacement). Studies reporting SUVs correlated to the diagnosis of PVE were selected for analysis...
June 5, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28575189/prosthetic-valve-endocarditis-predictors-of-early-outcome-of-surgical-therapy-a-multicentric-study
#18
Nicola Luciani, Eugenio Mossuto, Davide Ricci, Marco Luciani, Marco Russo, Antonio Salsano, Alberto Pozzoli, Michele D Pierri, Augusto D'Onofrio, Giovanni A Chiariello, Franco Glieca, Alberto Canziani, Mauro Rinaldi, Paolo Nardi, Valentina Milazzo, Enrico M Trecarichi, Francesco Santini, Michele De Bonis, Lucia Torracca, Eleonora Bizzotto, Mario Tumbarello
OBJECTIVES: Prosthetic valve endocarditis (PVE) is an uncommon yet dreadful complication in patients with prosthetic valves that requires a distinct analysis from native valve endocarditis. The present study aims to investigate independent risk factors for early surgical outcomes in patients with PVE. METHODS: A retrospective cohort study was conducted in 8 Italian Cardiac Surgery Units from January 2000 to December 2013 by enrolling all PVE patients undergoing surgical treatment...
June 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28574530/quality-of-care-of-hospitalized-infective-endocarditis-patients-report-from-a-tertiary-medical-center
#19
Mohammad Amin Kashef, Jennifer Friderici, Jaime Hernandez-Montfort, Auras R Atreya, Peter Lindenauer, Tara Lagu
OBJECTIVE: There have been no recent studies describing the management and outcomes of patients with infective endocarditis (IE). PATIENTS AND METHODS: We conducted a retrospective cohort study of adult patients admitted to a tertiary medical center from 2007 to 2011 with a Duke criteria consistent discharge diagnosis of IE. We examined concordance with guideline recommendations. Outcomes included embolic events, inhospital and 1-year mortality, length of stay (LOS) and cardiac surgery...
June 2017: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/28571632/anticoagulation-therapy-for-pregnant%C3%A2-women-with-mechanical%C3%A2-prosthetic-heart%C3%A2-valves-how-to-improve-safety
#20
EDITORIAL
Uri Elkayam
No abstract text is available yet for this article.
June 6, 2017: Journal of the American College of Cardiology
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