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Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis

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https://www.readbyqxmd.com/read/27428016/validation-of-sta-liatest-d-di-assay-for-exclusion-of-pulmonary-embolism-according-to-the-latest-clinical-and-laboratory-standard-institute-food-and-drug-administration-guideline-results-of-a-multicenter-management-study
#1
Gilles Pernod, Haifeng Wu, Emmanuel de Maistre, John Lazarchick, Jeannine Kassis, Carlos Aguilar, Pascual M Vera, Gualtiero Palareti, Armando D'Angelo
Combined clinical pretest probability (PTP) and D-dimer testing have great diagnostic value for pulmonary embolism exclusion. To harmonize performance levels of D-dimer assays available on the market, the Clinical and Laboratory Standard Institute (CLSI) has published a guideline, endorsed by the US Food and Drug Administration (FDA). Such guideline specifies the ideal D-dimer assay characteristic and target population. This study was conducted following the CLSI guideline to upgrade the assay-intended use and obtain FDA clearance of STA-Liatest D-Di assay for pulmonary embolism exclusion in patient with low/moderate PTP...
November 29, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27898515/cost-effectiveness-analysis-of-pharmacokinetic-driven-prophylaxis-vs-standard-prophylaxis-in-patients-with-severe-haemophilia-a
#2
Sergio Iannazzo, Paolo A Cortesi, Roberto Crea, Katharina Steinitz, Lorenzo G Mantovani, Alessandro Gringeri
The objective of this study was to assess the cost-effectiveness of pharmacokinetic-driven prophylaxis in severe haemophilia A patients. A microsimulation model was developed to evaluate the cost-effectiveness of pharmacokinetic-driven prophylaxis vs. standard prophylaxis and estimate cost, annual joint bleed rate (AJBR), and incremental cost-effectiveness ratio over a 1-year time horizon for a hypothetical population of 10 000 severe haemophilia A patients. A dose of 30 IU/kg per 48 h was assumed for standard prophylaxis...
November 24, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27898514/a-rare-combination-of-thrombotic-thrombocytopenic-purpura-and-antiphospholipid-syndrome
#3
Maya Viner, Irina Murakhovskaya
Thrombocytopenia, in the setting of microangiopathic hemolytic anemia and thrombotic events, is characteristic of both thrombotic thrombocytopenic purpura and primary antiphospholipid syndrome. Clinically, it is difficult to distinguish between these two syndromes. We present a 41-year-old woman with chronic, relapsing thrombotic thrombocytopenic purpura in the presence of antiphospholipid antibodies. She had clinical manifestations of antiphospholipid syndrome without meeting laboratory criteria of the Sydney classification system...
November 24, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27898513/inhibition-of-plasmin-generation-in-plasma-by-heparin-low-molecular-weight-heparin-and-a-covalent-antithrombin-heparin-complex
#4
Gabriela M T Chang, Helen M Atkinson, Leslie R Berry, Anthony K C Chan
The clinical limitations of unfractionated heparin (UFH) and low molecular weight heparin (LMWH) led to the development of an antithrombin-heparin covalent complex (ATH), which displays superior anticoagulant abilities compared with UFH. A recent study investigating its interaction with fibrinolysis showed that ATH inhibited free and fibrin bound plasmin and decreased plasmin generation on fibrin clots. These studies were conducted using purified components and did not elucidate the interaction of ATH with plasmin in the presence of its natural inhibitors α2-antiplasmin (α2-AP) and α2-macroglobulin (α2-M)...
November 24, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27841803/cancer-microvesicles-induce-tissue-factor-related-procoagulant-activity-in-endothelial-cells-in-vitro
#5
Mufuliat Adeola Adesanya, Anthony Maraveyas, Leigh A Madden
Microvesicles associated with tissue factor (TF) may play a role in cancer-related venous thromboembolism; however, not much is known about their interaction with the tumour stroma, especially the endothelium or any procoagulant changes seen because of this interaction. Using a head and neck squamous cell carcinoma line (UMSCC81B) and human umbilical vein endothelial cells (HUVECs), this study explored the interaction of cancer microvesicles released into cell culture media with endothelial cells in vitro, and assessed the procoagulant activity resulting from this interaction...
November 10, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27787285/heparin-induced-thrombocytopenia-a-tremendous-opportunity-for-randomization
#6
Austin Lammers, Thomas DeLoughery, Vinay Prasad
Heparin-induced thrombocytopenia and thrombosis (HITT) is both life-threatening with a complex immune-mediated process and clinically challenging to diagnose and treat. What further complicates matters is that thrombocytopenia is a frequently encountered laboratory value but rarely results in clinical signs of HITT. Decades into its initial description, we have anticoagulants with a small therapeutic index and associated high cost. The diagnosis is sometimes equivocal given our current laboratory diagnostics, and can take days to confirm...
October 25, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27755020/author-s-reply-many-confounding-factors-can-affect-mean-platelet-volume-in-euthyroid-hashimoto-s-thyroiditis-patients
#7
Ayse Carlioglu, Ozge Timur, Senay Durmaz, Mehmet E Ayhan
No abstract text is available yet for this article.
October 13, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27755019/exposure-of-fibrinogen-and-thrombin-to-nitric-oxide-donor-prolinonoate-affects-fibrin-clot-properties
#8
Christine C Helms, Shannon Kapadia, Anne C Gilmore, Zhexi Lu, Swati Basu, Daniel B Kim-Shapiro
Fibrin fibers form the structural backbone of blood clots. The structural properties of fibrin clots are highly dependent on formation kinetics. Environmental factors such as protein concentration, pH, salt, and protein modification, to name a few, can affect fiber kinetics through altered fibrinopeptide release, monomer association, and/or lateral aggregation. The objective of our study was to determine the effect of thrombin and fibrinogen exposed to nitric oxide on fibrin clot properties. ProliNONOate (5 μmol/l) was added to fibrinogen and thrombin before clot initiation and immediately following the addition of thrombin to the fibrinogen solution...
October 13, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27755018/end-user-evaluation-of-dg-pt-l-rec-a-human-recombinant-thromboplastin-in-liquid-formulation
#9
Núria Segarra, Joan Huguet, Beatriz Fernández-Forner
The objective is to evaluate Grifols' DG-PT L Rec liquid reagent for prothrombin time (PT) determination in comparison to the laboratory's reference reagent (Siemens' Thromborel S). For linearity, the average master curve for PT and five nominal prothrombin concentrations was obtained from five calibration curves. Within-assay precision (repeatability) was calculated after measuring 20 successive tests of normal and pathological controls. For correlation, 581 routine clinical citrated plasma samples were assessed with both reagents...
October 13, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27676646/evidence-of-both-von-willebrand-factor-deposition-and-factor-v-deposition-onto-al-amyloid-as-the-cause-of-a-severe-bleeding-diathesis
#10
Jonathan S Harrison, Shellaine R Frazier, Dianne D McConnell, Senan John Yasar, Nataliya Melnyk, Gratian Salaru
Acquired coagulopathies are common; uncommonly, adsorption of coagulation factors from the circulation into the tissues by pathologic amyloid exceeds the body's ability to produce factor and results in acquired factor deficiency. When amyloidosis does cause a coagulopathy, it is most often acquired factor X deficiency, but there are rare reports of amyloidosis being associated with other acquired factor deficiencies. We investigated a case of a severe bleeding diathesis, the cause of which was combined acquired factor V deficiency and concomitant acquired von Willebrand syndrome...
September 24, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27676645/fatal-hemorrhage-due-to-a-spontaneous-factor-v-inhibitor-with-lupus-anticoagulant-properties
#11
Nicholas J Olson, Donna Robert, Amin A Hedayat, Xiaoying Liu, Deborah L Ornstein
Factor V inhibitors are rare and have varied clinical presentations. We report on a 76-year-old female admitted to the hospital for pneumonia and treated with multiple antibiotics. Her baseline prothrombin time was 15.6 s and the activated partial thromboplastin time was 35 s. On admission day 10, she developed arm weakness and brain imaging showed a subdural hematoma. The prothrombin time was now 59.1 s with an activated partial thromboplastin time of more than 160 s and a normal thrombin time. A mixing study did not correct the clotting times and coagulation factor assays showed a nonspecific inhibition pattern...
September 24, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27676644/novel-enzyme-immunoassay-system-for-simultaneous-detection-of-six-subclasses-of-antiphospholipid-antibodies-for-differential-diagnosis-of-antiphospholipid-syndrome
#12
Junzo Nojima, Yukari Motoki, Kazusa Hara, Toshiyuki Sakata, Kiyoshi Ichihara
Antiphospholipid syndrome, which often complicates systemic lupus erythematosus (SLE), features high occurrence of arterial and/or venous thrombosis and recurrent fetal loss. However, which antibody subclass contributes to which clinical event remains uncertain. We newly developed an up-to-date enzyme immunoassay system using the AcuStar automated analyzer (Instrumentation Laboratory, Bedford, Massachusetts, USA) for parallel detection of six subclasses of antiphospholipid antibodies (aPLs): anticardiolipin antibodies (aCL) of IgG, IgM, and IgA and anti-β2-glycoprotein I antibodies (aβ2GPI) of IgG, IgM, and IgA...
September 24, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27661390/low-rates-of-symptomatic-venous-thromboembolism-in-patients-with-gastrointestinal-cancer-an-iranian-study
#13
Mohammadreza Mortazavizadeh, Yasaman Ayoughi, Nasrollah Bashardoost, Pedram Fadavi
Venous thromboembolism (VTE), which mostly includes deep vein thrombosis (DVT) and pulmonary embolism (PE), is associated with considerable morbidity and mortality in patients with cancer. As little is known about VTE associated with gastrointestinal cancers among the populations in the Middle East. This study aimed to determine the relative frequency of symptomatic VTE in patients with gastrointestinal malignancies in Iran. The charts of patients with gastrointestinal cancers in our institute from April 2010 to March 2015 were investigated for symptomatic VTE in a retrospective study...
September 21, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27655299/genotyping-analysis-of-the-factor-v-nara-mutation-hong-kong-mutation-and-16-single-nucleotide-polymorphisms-including-the-r2-haplotype-and-the-involvement-of-factor-v-activity-in-patients-with-recurrent-miscarriage
#14
Mari Izuhara, Keiko Shinozawa, Tamao Kitaori, Kinue Katano, Yasuhiko Ozaki, Katsuyuki Fukutake, Mayumi Sugiura-Ogasawara
Recurrent miscarriage can arise from a large diversity of causes and the factors responsible have not been fully clarified. The coagulation factor V R506Q (Leiden) mutation is a well known risk factor for recurrent miscarriage, although it has not been found in Japanese populations. We examined whether the factor V Nara and Hong Kong mutations, the factor V gene (F5) 16 single-nucleotide polymorphisms (SNPs), including the factor V R2 haplotype, and plasma factor V activity (FV:C) were risk factors for recurrent miscarriage...
September 20, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27636904/activated-protein-c-resistance-in-patients-following-venous-thromboembolism-receiving-rivaroxaban-versus-vitamin-k-antagonists-assessment-using-russell-viper-venom-time-based-assay
#15
Tadeusz Goralczyk, Katarzyna B Wojtowicz, Anetta Undas
Activated protein C resistance (APC-R) is assessed as part of thrombophilia screening, preferably in patients not taking oral anticoagulants. Rivaroxaban is known to alter some APC-R assays. To our knowledge, there have been no reports on the effect of rivaroxaban on the Russell viper venom time (RVVT)-based APC-R assay in real-life patients. In 168 consecutive outpatients suspected of having venous thromboembolism because of thrombophilia, APC-R was determined using the RVVT-based ProC Ac R assay (Siemens, Marburg, Germany)...
September 15, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27607598/practice-patterns-in-the-diagnosis-of-inherited-platelet-disorders-within-a-single-institution
#16
Juliana Perez Botero, Rajiv K Pruthi, Julie A Majerus, Lea M Coon, Cindy B Uhl, Dong Chen, Mrinal M Patnaik
The diagnosis of inherited platelet disorders (IPDs) is challenging with variable diagnostic practices existing between institutions. To determine patterns and utility of diagnostic testing practices for IPDs within a single institution, a retrospective cohort study was performed. Records of 50 patients (50% women), median age 32 years (1 day to 81 years) were analyzed. In total, 28 (53%) had a positive International Society of Thrombosis and Hemostasis Bleeding Assessment Tool score. Test-ordering patterns were highly variable...
September 7, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27749315/von-willebrand-disease-in-sub-saharan-africa-a-first-severe-case-reported-in-cameroon
#17
Claude T Tagny, Pauline N Balôgôg, Francoise Boehlen, Dora Mbanya
In Cameroon, the Yaoundé Hemophilia Treatment Center (HTC) has so far recorded 121 cases of hemophilia and only 10 cases of von Willebrand disease (VWD). We report the case of a 16-year-old girl, living in the north of Cameroon. She presented with severe meno-metrorrhagia, which had increased drastically within the past 3 months, associated more recently by gum bleeding and epistaxis. The coagulation screen showed a prolonged bleeding time. The clinical profile of this young girl and the findings of less than 5% for von Willebrand factor (VWF):Ag and 10% for VWF Ristocetin cofactor suggests a type 3 VWD...
October 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27467981/assessment-of-acquired-hemophilia-patient-demographics-in-the-united-states-the-hemostasis-and-thrombosis-research-society-registry
#18
Craig M Kessler, Alice D Ma, Hamid A B Al-Mondhiry, Robert Z Gut, David L Cooper
The Hemostasis and Thrombosis Research Society (HTRS) Registry was used to monitor the postapproval use of recombinant factor VIIa. The objective of this manuscript is to provide key insights on the demographics of patients with acquired hemophilia in the HTRS Registry. Acquired hemophilia patient registration in HTRS captured age; sex; comorbidities and predisposing conditions; first bleeding location; laboratory parameters; exposure to blood products, factor, and bypassing agents; and initiation of immune suppression/tolerance therapy...
October 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/25517253/bromelain-has-paradoxical-effects-on-blood-coagulability-a-study-using-thromboelastography
#19
Harmanpreet Kaur, Kathryn Corscadden, Carlene Lott, Hisham S Elbatarny, Maha Othman
Bromelain is a crude extract from pineapple that is known for a wide array of pharmacological effects including protein digestion, fibrinolytic and anti-immune inflammatory effects and has been popularly used as a phytotherapeutic drug. However, its clinical values and applications remain understudied. The aim of this study was to investigate the effect of bromelain on the coagulability of blood using thromboelastography (TEG). We identified 0.4 U/ml as the minimum concentration of bromelain that results in modification of a normal TEG tracing...
October 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/27607599/temporal-changes-in-clot-lysis-and-clot-stability-following-tranexamic-acid-in-cardiac-surgery
#20
Mariann Tang, Per Wierup, Catherine J Rea, Jrgen Ingerslev, Vibeke E Hjortdal, Benny Srensen
Cardiac surgery induces a multifactorial coagulopathy. Regular use of tranexamic acid (TXA) is becoming standard of care. Clinical challenges include selecting optimal dosing regimen and balancing the benefit versus risk of additional dosing with antifibrinolytics. The objective was to evaluate the effect of TXA by assessing kinetic properties of plasma clot formation, clot stability, and clot fibrinolysis. The study was a prospective case follow-up of 28 patients undergoing cardiac surgery (mean age 63.9 years, 29% women)...
September 2, 2016: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
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