Abstract:
INTRODUCTION:Pseudoprolongation of activated partial thromboplastin time (APTT) is a serious problem in anticoagulation therapy for patients with high hematocrit, such as cyanotic congenital heart diseases. APTT pseudoprolongation occurs when APTT assay is performed using routinely used vacuum sampling tubes containing citrate. Because the plasma fraction is small in high-hematocrit blood, the prescribed volume of citrate would be excessive for APTT assay, resulting in prolongation of clotting or APTT pseudoprolongation. CLSI--The Clinical and Laboratory Standards Institute (formerly NCCLS) method is the established method to correct the pseudoprolongation. However, the CLSI method needs repeated blood drawings and time-consuming, complicate procedures. Thus, alternative simple method is desired. METHOD:We examined whether APTT pseudoprolongation would be prevented by the increase in free calcium ion concentration by using high-concentration calcium chloride solution for the assay. Blood samples were obtained from 15 patients with high hematocrit (65+/-6%) who had cyanotic congenital heart disease. RESULT:Conventional APTT assay using 0.025 mol/L calcium chloride solution gave greater APTT compared with the CLSI method (51.7+/-11.8 vs. 34.6+/-4.7 s, p<0.001). However, when 0.035 mol/L calcium chloride solution was used, APTT (36.6+/-5.8 s) was similar to that obtained from the CLSI method. There was a good correlation in APTT values between high-calcium chloride solution method and the CLSI method (the slope=0.57, r2=0.49). CONCLUSION:High-calcium chloride solution method is useful to correct APTT pseudoprolongation. Because of the simplicity and the need of a single blood drawing, this method would reduce the burdens of not only patients but also clinical laboratory.
journal_name
Thromb Resjournal_title
Thrombosis researchauthors
Kanahara M,Kai H,Okamura T,Wada T,Suda K,Imaizumi T,Sagawa Kdoi
10.1016/j.thromres.2007.08.004subject
Has Abstractpub_date
2008-01-01 00:00:00pages
781-5issue
6eissn
0049-3848issn
1879-2472pii
S0049-3848(07)00318-0journal_volume
121pub_type
杂志文章abstract::We have previously described a stimulus-specific defect in platelet aggregation in polycythaemia vera (PV) after stimulation with surface receptor dependent agonists such as platelet activating factor (PAF). In contrast, responses to phorbol myristate acetate (PMA) were normal. We now report that after PAF stimulation...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/s0049-3848(98)00096-6
更新日期:1998-09-15 00:00:00
abstract::The loss of sialic acid was determined in human platelets stored during a seven day period in their homologous plasma. Approximately 30% of the sialic acid was lost during the first three days of incubation at room temperature and a total of 73% was lost after seven days. The rapid in vitro loss of sialic acid may mim...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/0049-3848(82)90316-4
更新日期:1982-06-15 00:00:00
abstract:INTRODUCTION:Preterm infants often require assisted ventilation, however ventilation when applied to the immature lung can initiate ventilator-induced lung injury (VILI). The biotrauma which underscores VILI is largely undefined, and is likely to involve vascular injury responses, including hemostasis. We aimed to use ...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2020.09.036
更新日期:2020-12-01 00:00:00
abstract::The effects of ticlopidine treatment (250 mg b.i.d. for 21 months) on fibrinogen and other rheological variables, as compared to placebo, were studied in 44 patients with intermittent claudication due to peripheral arterial occlusive disease. Blood samples were collected every 3 months during this double-blind, random...
journal_title:Thrombosis research
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0049-3848(88)90134-x
更新日期:1988-12-15 00:00:00
abstract:OBJECTIVES:To measure the variations of different parameters in the hemostatic system and to analyze their roles in the development of hemostatic disorder in patients with orthotopic liver transplantation (OLT) procedures routinely performed without venovenous bypass. METHODS:The blood coagulation and fibrinolysis par...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2007.10.002
更新日期:2008-01-01 00:00:00
abstract::ACS patients undergoing percutaneous coronary intervention (PCI) when treated with bivalirudin and clopidogrel had increased frequency of early stent thrombosis. 24 patients referred for intervention with planned bivalirudin therapy, not previously treated with a P2Y12 inhibitor and not receiving heparins or αIIbβ3 in...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2019.01.017
更新日期:2019-05-01 00:00:00
abstract:INTRODUCTION:Available data on fibrin clot properties and fibrinolysis in hyperthyroidism and hypothyroidism are inconsistent. Our objective was to assess the impact of effective treatment of hyper- and hypothyroidism on fibrin clot characteristics. MATERIAL AND METHODS:In a case-control study, ex vivo plasma fibrin c...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2014.05.041
更新日期:2014-08-01 00:00:00
abstract::Upon stimulation or apoptosis, eukaryotic cells shed membrane vesicles of submicron size. These so-called microparticles (MPs) are detected and characterized based on the exposure of antigens characteristic of their respective parental cells and on the increased distribution of negatively charged phospholipids to the ...
journal_title:Thrombosis research
pub_type: 杂志文章,评审
doi:10.1016/S0049-3848(08)70019-7
更新日期:2008-01-01 00:00:00
abstract:INTRODUCTION:An individualised thromboprophylaxis was implemented in critically ill patients suffering from coronavirus disease 2019 (COVID-19) pneumonia to reduce mortality and improve clinical outcome. The aim of this study was to evaluate the effect of this intervention on clinical outcome. METHODS:In this mono-cen...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2020.07.038
更新日期:2020-10-01 00:00:00
abstract::The study of the interaction between activated protein C (APC) and non-plasmatic inhibitors allowed us to demonstrate that aprotinin is a potent competitive inhibitor of APC with a Ki of 1.35 mumol/L. It was possible to adsorb immunopurified protein C (PC) activated by venom activator to insolubilized aprotinin and to...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/0049-3848(90)90268-h
更新日期:1990-07-01 00:00:00
abstract::When single-chain pro-UK is activated by plasmin or kallikrein, the Lys158-Ile159 bond is cleaved, leaving a C-terminal lysine on the A-chain (Lys-UK). Two-chain, high molecular weight urokinase (UK) purified from urine, however, has been shown to contain a phenylalanine residue as the C-terminal of the A-chain (Phe-U...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/0049-3848(91)90206-c
更新日期:1991-10-01 00:00:00
abstract::Thrombin-activatable fibrinolysis inhibitor (TAFI), also known as procarboxypeptidase U or plasma procarboxypeptidase B, is a relatively recently described plasma glycoprotein synthesised in the liver. It can be activated into active enzyme TAFIa (carboxypeptidase U or plasma carboxypeptidase B) by a complex of thromb...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/s0049-3848(02)00072-5
更新日期:2002-04-01 00:00:00
abstract:BACKGROUND:The usefulness of coagulation tests performed before epidural analgesia for surgery or to alleviate labour pain is controversial. The aims of this study were: (1) to evaluate the prevalence of abnormal tests in a large cohort of healthy pregnant women and their association with epidural hematoma; (2) to asse...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2011.02.023
更新日期:2011-07-01 00:00:00
abstract::Using high-resolution real-time two-dimensional ultrasound, we have investigated the role of red cells in the growth of already established platelet aggregates under controlled flow conditions. Platelet rich plasma (PRP) was circulated in vitro in horizontally and vertically arranged tubing at mean shear rate ranging ...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/0049-3848(84)90376-1
更新日期:1984-10-01 00:00:00
abstract:INTRODUCTION:We examined a 6-month-old girl with inherited fibrinogen abnormality and no history of bleeding or thrombosis. Routine coagulation screening tests showed a markedly low level of plasma fibrinogen determined by functional measurement and also a low level by antigenic measurement (functional/antigenic ratio=...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2014.06.002
更新日期:2014-08-01 00:00:00
abstract::Bone marrow transplantation (BMT) is the only curable option for thalassemia major, β-thalassemia/HbE. However, some patients still have the risk of hypercoagulable complications. We used a whole blood flow cytometric analysis to measure the circulating microparticle (MP) levels, activated platelets, and leukocyte-pla...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2018.07.007
更新日期:2018-09-01 00:00:00
abstract:INTRODUCTION:The contribution of platelet activation to the pathogenesis of sickle cell disease (SCD) remains uncertain. We evaluated the safety and efficacy of eptifibatide, a synthetic peptide inhibitor of the αIIbβ3 receptor, in SCD patients during acute painful episodes. MATERIALS AND METHODS:In this single site, ...
journal_title:Thrombosis research
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.thromres.2013.08.002
更新日期:2013-09-01 00:00:00
abstract::Patients with hematologic malignancies have an increased risk of venous thromboembolism (VTE), particularly at diagnosis and during the treatment with chemotherapy, asparaginase or immunomodulatory drugs (IMiDs). A disease-dependent hypercoagulable condition associated with other risk factors like drugs, central venou...
journal_title:Thrombosis research
pub_type: 杂志文章,评审
doi:10.1016/j.thromres.2011.11.034
更新日期:2012-03-01 00:00:00
abstract::Platelet aggregation, lipoprotein lipase activity, coagulation parameters and routine blood chemistry were measured in a randomised study of 21 surgical patients before, immediately after and 3 months after operation. Sodium heparin 5000 IU was given subcutaneously to 11 patients every 12 hours for 7 days, the first i...
journal_title:Thrombosis research
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0049-3848(83)90187-1
更新日期:1983-06-01 00:00:00
abstract:INTRODUCTION:To validate the diagnostic criteria for disseminated intravascular coagulation (DIC) established by the Japanese Association for Acute Medicine (JAAM) at an early stage of trauma and to evaluate the hypothesis that the JAAM criteria can diagnose DIC with a higher sensitivity than the International Society ...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2009.06.036
更新日期:2009-12-01 00:00:00
abstract:BACKGROUND:Abdominal obesity has been found to be associated with an increased risk of deep vein thrombosis (DVT). Whether patients with abdominal obesity have an increased risk of recurrence is currently unknown. METHODS:Patients with objective diagnosis of DVT and a life expectancy of greater than 6 months underwent...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2006.05.013
更新日期:2007-01-01 00:00:00
abstract::The placenta is the highly specialised organ of pregnancy that supports the normal growth and development of the fetus. Growth and function of the placenta are precisely regulated and coordinated to ensure the exchange of nutrients and waste products between the maternal and fetal circulatory systems operates at maxim...
journal_title:Thrombosis research
pub_type: 杂志文章,评审
doi:10.1016/j.thromres.2004.06.038
更新日期:2004-01-01 00:00:00
abstract::This study focused on the clinical outcomes in multiple myeloma (MM) patients with venous thromboembolism (VTE) who received low-molecular-weight heparin (dalteparin) therapy. Changes in D-dimer levels before and after VTE were also evaluated. Among 549 patients treated with various chemotherapeutic agents, a total of...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2015.09.021
更新日期:2015-11-01 00:00:00
abstract::Thrombocytopenia is a common finding in cancer patients and can have different and/or multifactorial pathogenesis. While in solid tumors it occurs often as a consequence of chemotherapy treatment, it is frequently observed at diagnosis in patients with hematological malignancies being aggravated to a potentially life-...
journal_title:Thrombosis research
pub_type: 杂志文章,评审
doi:10.1016/j.thromres.2018.02.001
更新日期:2018-04-01 00:00:00
abstract:INTRODUCTION:The TF-FVIIa complex is the primary activator of coagulation. Elevated levels of microvesicle (MV) bearing tissue factor (TF)-dependent procoagulant activity are detectable in patients with an increased risk of thrombosis. Several methods have been described to measure MV TF activity but they are hampered ...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2019.07.011
更新日期:2019-10-01 00:00:00
abstract::Normal pregnancy is associated with an increasing state of activation of the haemostatic system. This activation state is excessive in women with placenta-mediated pregnancy complications (PMPCs), including preeclampsia (PE). Platelet activation plays a crucial pathophysiological role in PE. The very early activation ...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/S0049-3848(19)30359-7
更新日期:2019-09-01 00:00:00
abstract:BACKGROUND:Nuclear factor kappa B (NF-kappa B) activation and tissue factor (TF) expression may contribute to lethality in sepsis. Inappropriate in vivo expression of TF is likely responsible for fibrin deposition in sepsis-associated disseminated intravascular coagulation (DIC). Clinical assessment of TF expression ha...
journal_title:Thrombosis research
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/j.thromres.2003.09.017
更新日期:2003-01-01 00:00:00
abstract::We report here that the rate of fibrin polymerization is accelerated by decompression: the rate is essentially doubled by reducing the pressure by one-half (380 torr, 14.7 PSI or 1/2 ATM) and increased by 3.6 times with respect to the control at 25 torr (0.48 PSI or 1/30th ATM). We also report here that the rate of fi...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/0049-3848(88)90251-4
更新日期:1988-03-15 00:00:00
abstract:INTRODUCTION:Synovitis is an early set and persistent change during the progression of osteoarthritis, which causes symptoms such as pain and swelling of the joints. Platelet-rich plasma (PRP) can release quantities of growth factors and cytokines, and is proved effected in promoting restoration of multiple soft tissue...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/j.thromres.2019.11.017
更新日期:2020-02-01 00:00:00
abstract::Incubation of recombinant human tissue factor apoprotein (Apo-TF) with human plasma decreased the recalcified clotting time of this plasma in a time-and dose-dependent manner suggesting relipidation of the Apo-TF by plasma lipoproteins. Incubation of Apo-TF with purified preparations of human very low density, low den...
journal_title:Thrombosis research
pub_type: 杂志文章
doi:10.1016/0049-3848(90)90182-c
更新日期:1990-11-01 00:00:00