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Valve thrombosis

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https://www.readbyqxmd.com/read/28520564/normothermic-cardiopulmonary-bypass-in-patient-with-waldenstr%C3%A3-m-s-macroglobulinemia-and-cryoglobulinemia-a-case-report
#1
Shiho Satomi, Asuka Kasai, Eisuke Hamaguchi, Yasuo M Tsutsumi, Katsuya Tanaka
Waldenström's macroglobulinemia (WM) manifests as hyperviscosity syndrome. Cryoglobulinemia, which may increase blood viscosity or induce thrombosis in association with decreased body temperature, can occur in combination with WM. We describe the management of an 82-year-old woman with WM, hyperviscosity syndrome, and cryoglobulinemia who required open aortic valve replacement. Decreased body temperature in this patient was prevented during cardiopulmonary bypass by using a forced air warming system and normothermic cardioplegia with continuous warm blood cardioplegia perfusion...
May 17, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28515823/lupus-negative-libman-sacks-endocarditis-complicated-by-catastrophic-antiphospholipid-syndrome
#2
Ghulam Murtaza, Joy Iskandar, Tara Humphrey, Sujeen Adhikari, Aneesh Kuruvilla
Libman-Sacks endocarditis is characterized by sterile and verrucous lesions that predominantly affect the aortic and mitral valves. In most cases, patients do not have significant valvular dysfunction. However, patients with significant valvular dysfunction may present with serious complications such as cardiac failure, arrhythmias, and thromboembolic events. Recently, association of Libman-Sacks endocarditis with antiphospholipid antibody syndrome (APS) has been made. APS is most commonly defined by venous and arterial thrombosis, recurrent pregnancy loss, and thrombocytopenia...
April 2017: Cardiology Research
https://www.readbyqxmd.com/read/28511838/supra-annular-valve-in-valve-implantation-reduces-blood-stasis-on-the-transcatheter-aortic-valve-leaflets
#3
Koohyar Vahidkhah, Ali N Azadani
Leaflet thrombosis following transcatheter aortic valve replacement (TAVR) and Valve-in-Valve (ViV) procedures has been increasingly recognized. This study aimed to investigate the effect of positioning of the transcatheter aortic valve (TAV) in ViV setting on the flow dynamics aspect of post-ViV thrombosis by quantifying the blood stasis in the intra-annular and supra-annular settings. To that end, two idealized computational models, representing ViV intra-annular and supra-annular positioning of a TAV were developed in a patient-specific geometry...
May 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28497845/comparison-of-dual-antiplatelet-therapy-versus-oral-anticoagulation-following-transcatheter-aortic-valve-replacement-a-retrospective-single-center-registry-analysis
#4
Erik W Holy, Julia Kebernik, Abdelhakim Allali, Mohamed El-Mawardy, Gert Richardt, Mohamed Abdel-Wahab
BACKGROUND: The choice of optimal antithrombotic regimen after transcatheter aortic valve replacement (TAVR) remains a matter of debate. The objective of this study was to compare both efficacy and safety outcomes based on the type of antithrombotic therapy prescribed after TAVR METHODS: This is a retrospective analysis of 514 consecutive patients treated with either dual antiplatelet therapy (DAPT) (n = 315; 61.3%) or oral anticoagulation (OAC) plus clopidogrel (n = 199; 38.7%) for a minimum of 3 month after TAVR followed by antiplatelet monotherapy or OAC only, respectively...
May 12, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28487841/bullous-hemorrhagic-dermatosis-due-to-enoxaparin-use-in-a-bullous-pemphigoid-patient
#5
Ji-Su Shim, Soo Jie Chung, Byung-Keun Kim, Sae-Hoon Kim, Kyu Sang Lee, Yeonyee E Yoon, Yoon-Seok Chang
Adverse reactions of subcutaneous low molecular weight heparin or unfractionated heparin could be complications by bleeding, heparin-induced thrombocytopenia, drug-induced liver injury, osteoporosis, and cutaneous reactions. Heparin-induced skin lesions vary from allergic reactions like erythema, urticaria, eczema to intradermal microvascular thrombosis associated with heparin-induced thrombocytopenia. There is a rare cutaneous complication, called bullous hemorrhagic dermatosis. We experienced this rare case of the cutaneous complication caused by enoxaparin...
April 2017: Asia Pacific Allergy
https://www.readbyqxmd.com/read/28485280/effect-of-reduced-cardiac-output-on-blood-stasis-on-transcatheter-aortic-valve-leaflets-implications-for-valve-thrombosis
#6
Koohyar Vahidkhah, Mostafa Abbasi, Mohammed Barakat, Peyman N Azadani, Anwar Tandar, Danny Dvir, Ali N Azadani
AIMS: There is an increasing awareness of leaflet thrombosis following transcatheter aortic valve implantation (TAVI) and valve-in-valve (ViV) procedures. Nevertheless, the predisposing factors affecting transcatheter aortic valve (TAV) thrombosis have remained unclear. This study quantifies the effects of reduced cardiac output (CO) on blood stasis on the TAV leaflets as a permissive factor for valve thrombosis. METHODS AND RESULTS: An idealized computational model representing a TAV was developed in a patient-specific geometry...
May 9, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28483152/blood-stasis-on-transcatheter-valve-leaflets-and-implications-for-valve-in-valve-leaflet-thrombosis
#7
Koohyar Vahidkhah, Shahnaz Javani, Mostafa Abbasi, Peyman N Azadani, Anwar Tandar, Danny Dvir, Ali N Azadani
BACKGROUND: Leaflet thrombosis after valve-in-valve (ViV) procedure has been increasingly recognized. This study aimed to investigate the flow dynamics aspect of leaflet thrombosis by quantifying the blood stasis on the noncoronary and coronary leaflets of a surgical aortic valve (SAV) and a transcatheter aortic valve (TAV) in a ViV setting. METHODS: Two computational models, representing a SAV and a TAV in ViV setting, were developed in a patient-specific geometry...
May 5, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28475690/safety-effectiveness-and-haemodynamic-performance-of-a-new-stented-aortic-valve-bioprosthesis%C3%A2
#8
Robert J M Klautz, A Pieter Kappetein, Rüdiger Lange, Francois Dagenais, Louis Labrousse, Vinayak Bapat, Michael Moront, Martin Misfeld, Cathy Zeng, Joseph F Sabik Iii
OBJECTIVES: We assessed the safety, effectiveness and haemodynamic performance of a new bovine stented aortic valve bioprosthesis (Avalus™). METHODS: The PERIGON Pivotal Trial is a prospective, non-randomized, multicentre study. Subjects had symptomatic moderate or severe aortic stenosis or chronic, severe aortic regurgitation. Death, valve-related adverse events (AEs), functional recovery and haemodynamic performance were assessed at discharge, 3-6 months and 1 year...
May 4, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28471981/oncostatin-m-was-associated-with-thrombosis-in-patients-with-atrial-fibrillation
#9
Jun Xie, Suhui Zhu, Qing Dai, Jianrong Lu, Jianzhou Chen, Guannan Li, Han Wu, Ran Li, Wei Huang, Biao Xu, Wei Xu
The mechanism underlying thrombosis in atrial fibrillation (AF) is not yet clearly understood. Oncostatin M (OSM), as a member of IL-6 family, is involved in atherosclerosis-mediated thrombosis. The present study hypothesizes that OSM and its downstream factors play a role in thrombogenesis in AF.The specimens of left atrial appendages collected from patients with rheumatic mitral stenosis who underwent valve replacement were divided into 3 groups: sinus rhythm, AF(+)/thrombus(-), and AF(+)/thrombus(+) group...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28468510/safety-and-efficacy-of-bridging-with-low-molecular-weight-heparin-during-temporary-interruptions-of-warfarin-a-register-based-cohort-study
#10
Vilhelm Sjögren, Bartosz Grzymala-Lubanski, Henrik Renlund, Peter J Svensson, Anders Själander
Low-molecular-weight heparin (LMWH) is often recommended as a bridging therapy during temporary interruptions in warfarin treatment, despite lack of evidence. The aim of this study was to see whether we could find benefit from LMWH bridging. We studied all planned interruptions of warfarin within the Swedish anticoagulation register Auricula during 2006 to 2011. Low-molecular-weight heparin bridging was compared to nonbridging (control) after propensity score matching. Complications were identified in national clinical registers for 30 days following warfarin cessation, and defined as all-cause mortality, bleeding (intracranial, gastrointestinal, or other), or thrombosis (ischemic stroke or systemic embolism, venous thromboembolism, or myocardial infarction) that was fatal or required hospital care...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28465848/extensive-intracardiac-and-deep-venous-thromboses-in-a-young-woman-with-heparin-induced-thrombocytopenia-and-may-thurner-syndrome
#11
Yekaterina Kim, Daniel C Choi, Ali N Zaidi
A 38-year-old woman with a history of recurrent deep venous thromboses (DVTs) on chronic anticoagulation presented with acute left leg swelling. The patient was diagnosed with an acute left lower extremity (LLE) DVT in the setting of May-Thurner syndrome for which treatment with unfractionated heparin was started. Her hospital course was complicated by a new diagnosis of heparin-induced thrombocytopenia (HIT), with an incidental discovery of a large tricuspid valve mobile mass on a transthoracic echocardiogram (TTE)...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28463467/thrombolysis-of-prosthetic-mitral-valve-thrombosis-in-an-infant
#12
Ali Hage, Frederic Jacques, Philippe Chetaille, Macha Bourdages, Karine Cloutier, Jean Perron, Christine Houde
A 7-week-old female developed thrombosis of a mechanical mitral valve and was successfully treated with recombinant tissue plasminogen activator (rt-PA). The management of infants with thrombosed mechanical prosthesis is reviewed.
May 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28461416/aortic-valve-bioprostheses-leaflet-immobility-and-valve-thrombosis
#13
REVIEW
David R Holmes, Michael J Mack
Leaflet immobility and valve thrombosis have been reported with both transcatheter and surgical aortic valve bioprostheses. The relationships between these abnormalities and their incidence, time course, clinical significance, predisposing factors, optimal imaging modality, and current therapeutic options remain uncertain but are rapidly evolving. Four-dimensional computerized tomographic imaging has been determined to have the highest sensitivity in studies evaluating leaflet immobility and valve thrombosis...
May 2, 2017: Circulation
https://www.readbyqxmd.com/read/28457630/non-invasive-thrombolysis-using-microtripsy-in-a-porcine-deep-vein-thrombosis-model
#14
Xi Zhang, Jonathan J Macoskey, Kimberly Ives, Gabe E Owens, Hitinder S Gurm, Jiaqi Shi, Matthew Pizzuto, Charles A Cain, Zhen Xu
Histotripsy is a non-invasive therapeutic technique that uses ultrasound generated from outside the body to create controlled cavitation in targeted tissue, and fractionates it into acellular debris. We have developed a new histotripsy approach, termed microtripsy, to improve targeting accuracy and to avoid collateral tissue damage. This in vivo study evaluates the safety and efficacy of microtripsy for non-invasive thrombolysis in a porcine deep vein thrombosis model. Acute thrombi were formed in left femoral veins of pigs (∼35 kg) by occluding the vessel using two balloon catheters and infusing with thrombin...
April 27, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28449781/bioprosthetic-valve-thrombosis
#15
REVIEW
Rishi Puri, Vincent Auffret, Josep Rodés-Cabau
Bioprosthetic valve (BPV) thrombosis is considered a relatively rare clinical entity. Yet a more recent analysis involving a more systematic echocardiographic follow-up, the advent of transcatheter heart valve (THV) technologies coupled with the highly sensitive nature of 4-dimensional computed tomographic imaging for detecting subclinical thrombi upon both surgically implanted and THVs, has generated enormous interest in this field, casting new light on both its true incidence and clinical relevance. Debate continues among clinicians as to both the clinical relevance of subclinical BPV thrombosis and the value of empirical oral anticoagulation following BPV implantation...
May 2, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28444177/single-centre-experience-with-transapical-transcatheter-mitral-valve-implantation%C3%A2
#16
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/28441646/spontaneous-regression-of-possible-transcatheter-aortic-valve-thrombosis-without-additional-anticoagulant-two-year-follow-up
#17
Ryo Yanagisawa, Kentaro Hayashida, Masahiro Jinzaki, Keiichi Fukuda
An 84-year-old man with symptomatic severe aortic stenosis received transcatheter aortic valve implantation (TAVI). Dual-antiplatelet therapy was continued for 6 months post TAVI, and aspirin alone was used thereafter. Four-dimensional multidetector computed tomography revealed a new hypoattenuated leaflet thickening (HALT) with reduced leaflet motion at 1 year, considered to indicate leaflet thrombosis. At the 2-year follow-up, leaflet mobility had improved, with spontaneous regression of HALT. This is the first report of confirmed spontaneous regression of possible transcatheter heart valve thrombosis and recovery of leaflet mobility without the need for additional anticoagulant...
May 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28433356/aortic-sinus-flow-stasis-likely-in-valve-in-valve-transcatheter-aortic-valve-implantation
#18
Hoda Hatoum, Brandon L Moore, Pablo Maureira, Jennifer Dollery, Juan A Crestanello, Lakshmi Prasad Dasi
OBJECTIVE: Valve-in-valve procedures using transcatheter aortic valves are increasingly performed to treat degenerated bioprosthetic surgical aortic valves because they are less invasive than redo aortic valve replacement. The objective of this study is to quantify the changes in aortic sinus blood flow dynamics before and after a valve-in-valve procedure to gain insight into mechanisms for clinical and subclinical thrombosis of leaflets. METHODS: A detailed description of the sinus hemodynamics for valve-in-valve implantation was performed in vitro...
March 23, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28431139/massive-aortic-valve-thrombosis-with-free-floating-thrombus-following-transcatheter-aortic-valve-replacement
#19
Julian A Luetkens, Hans H Schild, Daniel K Thomas
No abstract text is available yet for this article.
April 17, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28431056/long-term-outcome-of-transvenous-pacemaker-implantation-in-infants-a-retrospective-cohort-study
#20
Laura M Vos, Janneke A E Kammeraad, Matthias W Freund, Andreas C Blank, Johannes M P J Breur
Aim: Evaluation of long-term outcome of transvenous pacemaker (PM) implantation in infants. Methods and Results: A retrospective analysis of all transvenous PM implantations in infants <10 kg between September 1997 and October 2001 was made. Indications for PM implantation, age at implantation, and determinants of long-term outcome including cardiac function, PM function, and PM (system) complications were noted. Seven patients underwent transvenous VVI(R) PM implantation...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
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