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Clinical and Applied Thrombosis/hemostasis

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https://www.readbyqxmd.com/read/28183196/the-application-of-current-proposed-venous-thromboembolism-risk-assessment-model-for-ambulatory-patients-with-cancer
#1
Hikmat Abdel-Razeq, Asem Mansour, Salwa S Saadeh, Mahmoud Abu-Nasser, Mohammad Makoseh, Murad Salam, Alaa Abufara, Yousef Ismael, Alaa Ibrahim, Ghaleb Khirfan, Mohammad Ibrahim
Venous thromboembolism (VTE) is a commonly encountered problem in patients with cancer. In recent years, cancer treatment paradigm has shifted with most therapy offered in ambulatory outpatient settings. Excess of half VTEs in patients with cancer occur in outpatient settings without prior hospitalization, where current practice guidelines do not recommend routine prophylaxis. Risk assessment models (RAMs) for VTE in such patients were recently introduced. This study aims to assess the practical application of one of these models in clinical practice...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28135822/impact-of-warfarin-persistence-on-health-care-utilization-and-costs-among-patients-with-atrial-fibrillation-managed-in-anticoagulation-clinics-in-the-united-states
#2
Steven B Deitelzweig, Michael Evans, Jeffrey Trocio, Kiran Gupta, Melissa Lingohr-Smith, Brandy Menges, Jay Lin
Warfarin is a recommended therapy to reduce the risk of stroke in patients with nonvalvular atrial fibrillation (NVAF). The objectives of this study were to identify potential factors associated with warfarin persistence and evaluate the impact of warfarin persistence on health-care resource utilization and costs among patients with NVAF in the United States. Patients (≥18 years) with ≥1 inpatient or ≥2 outpatient diagnoses of AF without valvular disease were identified from an electronic medical record database (January 1, 2004, to January 31, 2015)...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28118751/influence-of-prescribed-blood-products-on-the-incidence-of-deep-vein-thrombosis-and-pulmonary-embolism-in-surgical-patients
#3
Alenka Premuš Marušič, Igor Locatelli, Aleš Mrhar, Martin Caprnda, Ludovit Gaspar, Mariusz Adamek, Peter Kruzliak, Daniel Petrovič
Deep vein thrombosis (DVT) and pulmonary embolisms (PEs) are common complications after surgical procedures. The influence of prescribed blood products on the occurrence of DVT and PE was evaluated in postsurgical patients in this retrospective case-control study. The records of 286 surgical patients were analyzed: DVT (n = 52), PE (n = 92), and a control group (n = 142). The amounts of prescribed blood, blood products, and vitamin K were reviewed, together with appropriate prescribing of low-molecular-weight heparins...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28118750/characterization-of-pf4-heparin-complexes-by-photon-correlation-spectroscopy-and-zeta-potential
#4
Sabrina Bertini, Jawed Fareed, Laura Madaschi, Giulia Risi, Giangiacomo Torri, Annamaria Naggi
Heparin-induced thrombocytopenia (HIT) is associated with antibodies to complexes between heparin and platelet factor 4 (PF4), a basic protein usually found in platelet alpha granules. Heparin-induced thrombocytopenia antibodies preferentially recognize macromolecular complexes formed between positively charged PF4 and polyanionic heparins over a narrow range of molar ratios. The aim of this work was to study the complexes that human PF4 forms with heparins from various species, such as porcine, bovine, and ovine; heparins from various organs, such as mucosa and lung; and different low-molecular-weight heparins (LMWHs) at several stoichiometric ratios to evaluate their sizes and charges by photo correlation spectroscopy and zeta potential measurements...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28118749/warfarin-interaction-with-hepatic-cytochrome-p-450-enzyme-inducing-anticonvulsants
#5
Nathan P Clark, Kim Hoang, Thomas Delate, John R Horn, Daniel M Witt
BACKGROUND: Initiation of cytochrome P-450 (CYP)-inducing anticonvulsant medications during warfarin therapy may decrease anticoagulant effect and necessitate frequent warfarin dose adjustments to maintain therapeutic response measured by the international normalized ratio (INR). Clinical information regarding interactions between warfarin and these medications is limited. This study investigated warfarin dose and INR response following CYP-inducing anticonvulsant initiation among chronic warfarin users...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28110541/validation-of-a-new-elisa-based-vasodilator-associated-stimulated-phosphoprotein-phosphorylation-assay-to-assess-platelet-reactivity-index-in-a-chinese-population
#6
Peng Ding, Yujie Wei, Nana Chen, Huiliang Liu
The level of platelet reactivity during P2Y12-adenosine diphosphate receptor antagonist is associated with ischemic and bleeding risks following percutaneous coronary intervention in acute coronary syndrome. Determining platelet reactivity inhibition may be valuable for confirming effective platelet inhibition for individual patients and identifying patients at risk of bleeding. The enzyme-linked immunosorbent assay (ELISA)-based vasodilator-stimulated phosphoprotein (VASP) assay offers unique advantages over other methods and has not been used in the Chinese population...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28110540/portal-vein-thrombosis-in-patients-with-cirrhosis-undergoing-elective-transjugular-intrahepatic-portosystemic-shunt
#7
Wan Yue-Meng, Yu-Hua Li, Hua-Mei Wu, Jing Yang, Li-Hong Yang, Ying Xu
Portal vein thrombosis (PVT) is a common complication in cirrhosis. The aim of this study was to determine risk factors for PVT, assess the efficacy of anticoagulant therapy, and evaluate the effects of PVT on patients with cirrhosis undergoing elective transjugular intrahepatic portosystemic shunt (TIPSS). A total of 101 patients with cirrhosis undergoing elective TIPSS were prospectively studied. After TIPSS, all patients received preventive therapy for PVT and were followed up at 3, 6, 12, and 24 months...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28081621/pla2-polymorphism-in-glycoprotein-iib-iiia-modulates-the-morphology-and-nanomechanics-of-platelets
#8
Svetla Todinova, Regina Komsa-Penkova, Sashka Krumova, Stefka G Taneva, Georgy Golemanov, Galia Georgieva, Pencho Tonchev, Boris Tsankov, Lyubomir Beshev, Konstantin Balashev, Tonya D Andreeva
Glycoprotein IIb/IIIa (GPIIb/IIIa) is the most abundant platelet surface receptor for fibrinogen and von Willebrand factor. Polymorphism PlA1/A2 in the gene of GPIIb/IIIa is among the risk factors for the development of arterial and venous thrombosis. The aim of this study is to evaluate the effect of the carriage of PlA1/A2 on the size, topographic features, and membrane stiffness of platelets from healthy controls and patients with deep venous thrombosis (DVT). Atomic force microscopy (AFM) imaging and nanoindentation (force-distance curves) were applied to investigate the morphological and nanomechanical properties (Young's modulus) of platelets immobilized on glass surface...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28068791/the-utilization-of-antithrombotic-therapy-in-older-patients-in-aged-care-facilities-with-atrial-fibrillation
#9
Bridget Frain, Ronald Castelino, Luke R Bereznicki
Oral anticoagulants are essential drugs for the prevention of thromboembolic events in patients with atrial fibrillation (AF). Anticoagulants are, however, commonly withheld in older people due to the risk and fear of hemorrhage. Although the underutilization of anticoagulants in patients with AF has been demonstrated internationally, few studies have been conducted among aged care residents. The aim of this study was to determine the utilization of anticoagulants among people with AF residing in aged care facilities...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28056528/spectrum-of-molecular-defects-in-216-chinese-families-with-hemophilia-a
#10
Zhiping Guo, Linhua Yang, Xiuyu Qin, Xiue Liu, Yaofang Zhang
Hemophilia A (HA) is an X-linked bleeding disorder caused by heterogeneous mutations in the factor VIII gene ( F8). Our aim is to identify the causative mutations in a large HA cohort from China. We studied 216 unrelated HA families. Molecular analyses of F8 were performed using a combination of molecular techniques, including polymerase chain reaction, direct sequencing, and multiplex ligation-dependent probe amplification. The deleterious consequences of the unreported missense mutations were evaluated using various bioinformatics approaches...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28056526/comparison-of-low-molecular-weight-heparins-prepared-from-bovine-heparins-with-enoxaparin
#11
Xinyue Liu, Kalib St Ange, Jawed Fareed, Debra Hoppensteadt, Walter Jeske, Ahmed Kouta, Lianli Chi, Caijuan Jin, Yongsheng Jin, Yiming Yao, Robert J Linhardt
Heparin and its low-molecular-weight heparin (LMWH) derivatives are widely used clinical anticoagulants. These drugs are critical for the practice of medicine in applications including kidney dialysis, cardiopulmonary bypass, and in the management of venous thromboembolism. Currently, these drugs are derived from livestock, primarily porcine intestine. The worldwide dependence on a single animal species has made the supply chain for this critical drug quite fragile, leading to the search for other sources of these drugs, including bovine tissues such as bovine intestine or lung...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28049362/warfarin-dose-model-for-the-prediction-of-stable-maintenance-dose-in-indian-patients
#12
Tejasvita Gaikwad, Kanjaksha Ghosh, Peter Avery, Farhad Kamali, Shrimati Shetty
The main aim of this study was to screen various genetic and nongenetic factors that are known to alter warfarin response and to generate a model to predict stable warfarin maintenance dose for Indian patients. The study comprised of 300 warfarin-treated patients. Followed by extensive literature review, 10 single-nucleotide polymorphisms, that is, VKORC1-1639 G>A (rs9923231), CYP2C9*2 (rs1799853), CYP2C9*3 (rs1057910), FVII R353Q (rs6046), GGCX 12970 C>G (rs11676382), CALU c.*4A>G (rs1043550), EPHX1 c...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28049360/identification-of-genetic-aberrations-in-thrombomodulin-gene-in-patients-with-recurrent-venous-thromboembolism
#13
Abrar Ahmad, Kristina Sundquist, Bengt Zöller, Peter J Svensson, Jan Sundquist, Ashfaque A Memon
Thrombomodulin (THBD) serves as a cofactor for thrombin-mediated activation of anticoagulant protein C pathway. Genetic aberrations in THBD have been studied in arterial and venous thrombosis. However, genetic changes in THBD and their role in the risk assessment of recurrent venous thromboembolism (VTE) are not well understood. The aim of the present study was to identify the genetic aberrations in THBD and their association with the risk of VTE recurrence in a prospective population-based study. We sequenced the entire THBD gene, first in selected patients with VTE (n = 95) by Sanger sequencing and later validated those polymorphisms with minor allele frequency (MAF) ≥5% in the whole study population (n = 1465 with the follow-up period of 1998-2008) by Taqman polymerase chain reaction...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28049359/iranian-low-dose-escalating-prophylaxis-regimen-in-children-with-severe-hemophilia-a-and-b
#14
Peyman Eshghi, Elham Sadeghi, S Zahra Tara, Behnaz Habibpanah, Razieh Hantooshzadeh
Establishing an appropriate prophylaxis regimen for children with hemophilia is a critical challenge in developing countries. Barriers including availability and affordability, catheter-related complications, and inhibitor development risks have led to the introduction of new tailored prophylaxis regimens in different countries. This study emphasizes on the benefits of the Iranian low-dose escalating prophylaxis regimen in a Hemophilia Comprehensive Care Center in Iran. Referred patients with hemophilia less than 15 years of age, who were subject to prophylaxis regimen, are studied retrospectively...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28049358/thrombophilia-screening
#15
Giuseppe Colucci, Dimitrios A Tsakiris
The utility of thrombophilia testing in clinical practice is still a matter of debate because studies have not shown a benefit in the reduction of recurrent venous thromboembolism (VTE) risk in patients with thrombosis, despite the clearly higher VTE risk for first thrombosis. Screening for thrombophilia is indicated in selected patients. Particularly in selected young patients, especially women of childbearing age, the knowledge of the genetic thrombophilic defect may help in specific situations to decrease the risk of VTE events...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27920237/von-willebrand-disease-a-concise-review-and-update-for-the-practicing-physician
#16
Arjun Swami, Varinder Kaur
von Willebrand disease (vWD) is the most common inherited disorder of hemostasis and comprises a spectrum of heterogeneous subtypes. Significant advances have been made in understanding von Willebrand factor (vWF) gene mutations, resultant physiologic deficits in the vWF peptide, and their correlation to clinical presentation. Diagnostic tests for this disorder are complex, and interpretation requires a thorough understanding of the underlying pathophysiology by the practicing physician. The objective of this review is to summarize our current understanding of pathophysiology, laboratory investigations, and evolving treatment paradigm of vWD with the availability of recombinant von Willebrand factor...
December 5, 2016: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27920236/the-efficacy-of-recombinant-fviii-low-dose-prophylaxis-in-chinese-pediatric-patients-with-severe-hemophilia-a-a-retrospective-analysis-from-the-recare-study
#17
Wanru Yao, Juan Xiao, Xiaoling Cheng, Guoshuang Feng, Changgang Li, Xinsheng Zhang, Qun Hu, Weiqun Xu, Jing Sun, Renchi Yang, Xiaojing Li, Rongfu Zhou, Shimei Lian, Jian Gu, Junde Wu, Yongqiang Zhao, Runhui Wu
OBJECTIVE: This study explores the efficacy of recombinant factor VIII (rFVIII) low-dose prophylaxis in Chinese pediatric patients with severe hemophilia A from the Retrospective Study in Chinese Pediatric Hemophilia A Patients With rFVIII Contained Regular Prophylaxis (ReCARE) population. METHODS: This is additional analysis of the multicenter, retrospective ReCARE study, in which the annual bleeding rate (ABR), annual joint bleeding rate (AJBR), and safety of >12-week, low dose (10-30 IU/kg/wk) rFVIII prophylaxis divided into primary, secondary, and tertiary groups based on the joint status and joint bleeding history were analyzed...
December 5, 2016: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27899521/venous-thrombotic-events-after-liver-transplantation
#18
Annabel Blasi, Virginia Hernandez, Javier Fernandez, Jordi Colmenero, Joan Beltran, Juan Carlos Garcia-Valdecasas, Joan Carles Reverter
Thromboprophylaxis is not well defined after liver transplantation (LT). The aim of this study was to evaluate the incidence of splanchnic vein thrombosis (SVT) and nonsplanchnic vein thrombosis (NSVT) after LT. Liver transplantations performed between 2009 and 2013 in our institution were reviewed. Demographic, intraoperative, and postoperative data were recorded. Low-molecular-weight heparin was only administered postoperatively if intraoperative thrombectomy was performed or in patients preoperatively anticoagulated...
November 28, 2016: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27899520/is-adherence-to-the-american-college-of-chest-physicians-recommended-anticoagulation-treatment-duration-associated-with-different-outcomes-among-patients-with-venous-thromboembolism
#19
Alex C Spyropoulos, Ron Preblick, Winghan J Kwong, Melissa Lingohr-Smith, Jay Lin
Clinical and economic outcomes associated with venous thromboembolism (VTE) patient adherence to the American College of Chest Physicians (ACCP) anticoagulant (AC) treatment guidelines are incompletely understood. Patients with ≥1 inpatient or ≥2 separate outpatient claims for deep vein thrombosis and/or pulmonary embolism, based on International Classification of Diseases, Ninth Revision, Clinical Modification codes, were identified from the IMS PharMetrics Plus database. Patients had continuous insurance coverage for 12 months before (baseline) and after (follow-up) the index event (first VTE claim) but no baseline VTE claims...
November 28, 2016: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27895197/the-effect-of-ace-i-d-polymorphisms-alone-and-with-concomitant-risk-factors-on-coronary-artery-disease
#20
Ahmed Amara, Meriem Mrad, Aicha Sayeh, Dhaker Lahideb, Samy Layouni, Abdeddayem Haggui, Najiba Fekih-Mrissa, Habib Haouala, Brahim Nsiri
BACKGROUND: Coronary artery disease (CAD), also known as atherosclerotic heart disease, is a leading cause of mortality and morbidity throughout the world. The role of insertion/deletion (I/D) polymorphisms of the angiotensin-converting enzyme (ACE) gene in the etiology of CAD remains to be more completely clarified. The aim of this study was to determine the role of the ACE I/D polymorphism in patients with CAD and to study the association together with traditional risk factors in assessing the risk of CAD...
November 28, 2016: Clinical and Applied Thrombosis/hemostasis
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