Abstract：
INTRODUCTION:The activated partial thromboplastin time (APTT) is commonly used to monitor unfractionated heparin (UFH) but may not accurately measure the amount of heparin present. The anti-Xa assay is less susceptible to confounding factors and may be a better assay for this purpose. MATERIALS AND METHODS:The validity of the APTT for monitoring UFH was assessed by comparing with an anti-Xa assay on 3543 samples from 475 patients (infants [n=165], children 1-15years [n=60] and adults [n=250]) receiving treatment dose UFH. RESULTS:Overall concordance was poor. The highest concordance (66%; 168/254) was seen in children. Concordance (51.8%) or discordance (48.4%) was almost equal in adult patients. Among adult patients whose anti-Xa level was within 0.3-0.7IU/mL, only 38% had an APTT in the therapeutic range whilst 56% were below and 6% were above therapeutic range. Children and adult patients with anti-Xa of 0.3-0.7IU/mL but sub- therapeutic APTT had significantly higher fibrinogen levels compared to those with therapeutic or supra-therapeutic APTT. CONCLUSIONS:When the anti-Xa level was 0.3-0.7IU/mL, the majority of samples from infants demonstrated a supra-therapeutic APTT, whilst adults tended to have a sub-therapeutic APTT. This may lead to under anticoagulation in infants or over anticoagulation in adults with risk of bleeding if APTT is used to monitor UFH. These results further strengthen existing evidence of the limitation of APTT in monitoring UFH. Discordance of APTT and anti-Xa level in adults and children may be due to elevation of fibrinogen level.
journal_name
Thromb Resjournal_title
Thrombosis researchauthors
Arachchillage DRJ,Kamani F,Deplano S,Banya W,Laffan Mdoi
10.1016/j.thromres.2017.07.006subject
Has Abstractpub_date
2017-09-01 00:00:00pages
157-161eissn
0049-3848issn
1879-2472pii
S0049-3848(17)30408-5journal_volume
157pub_type
杂志文章abstract：:Approximately one-fifth of all cases of venous thromboembolism (VTE) are related to cancer. VTE complications may have a substantial impact on prognosis, quality of life and care in patients with cancer. Patients with cancer-related VTE are at increased risk of developing recurrent VTE compared to patients without can...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/S0049-3848(20)30409-6
更新日期：2020-07-01 00:00:00
abstract：:Pulmonary embolism (PE) is a common, lethal yet treatable disease. The clinical diagnosis of PE remains to be a problem due to the nonspecific presenting signs, symptoms, electrocardiographic findings, arterial blood gas abnormalities and chest X-ray changes. Despite these nonspecific clinical findings, clinicians are...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/s0049-3848(01)00326-7
更新日期：2001-09-15 00:00:00
abstract：:Lp(a) lipoprotein contains a unique apolipoprotein, apolipoprotein (a), that has a striking homology with plasminogen. This homology has brought forward speculations as to an inhibitory effect of Lp(a) lipoproteins on fibrinolysis. The present investigation was undertaken to study the influence of Lp(a) lipoprotein on...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(92)90080-t
更新日期：1992-11-01 00:00:00
abstract：:Intra-ventricular hemorrhage (IVH) occurs predominantly in very low birth weight premature infants. Survivors of severe IVH frequently experience long-term consequences including major neurological deficits. Advances in neonatal and obstetric care in the last decades, have led to a steady decline in mortality and in t...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/S0049-3848(11)70032-9
更新日期：2011-02-01 00:00:00
abstract：:The potent inhibitor of platelet cAMP phosphodiesterase (PDE) HL 725 (9,10-Dimethoxy-2-mesitylimino-3-methyl-3, 4,6,7-tetrahydro-2H-pyrimido(6,1-A)-isoquinoline-4-one-hydrochloride), was examined for its effects on human and rat platelet aggregation. Strong inhibitory effects are seen on collagen-induced platelet aggr...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(87)90376-8
更新日期：1987-07-15 00:00:00
abstract：:Lipoprotein-Associated Coagulation Inhibitor (LACI) is a factor Xa dependent inhibitor of the factor VII(a)/Tissue Factor catalytic complex. Deduced from partial cDNA sequence, LACI's amino acid sequence has recently been reported. Northern blot analysis showed LACI cDNA hybridizes to RNAs of 1.4 and 4.0 kb in size. T...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(89)90454-4
更新日期：1989-07-01 00:00:00
abstract：:A platelet storage pool deficiency (SPD) is present in platelets from cattle with the Chediak-Higashi syndrome (CHS). The most plausible hypothesis for the SPD is that dense granule precursors are simply not formed in CHS megakaryocytes. There is, however, evidence that some recently acquired 5-hydroxytryptamine (5HT)...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(90)90096-u
更新日期：1990-05-01 00:00:00
abstract：:Capsaicin was found to be a potent inhibitor of platelet aggregation and release reaction. It inhibited the aggregation of rat platelet induced by collagen and thrombin, but only slightly reduced those of AA and A23187. The IC50 on collagen-induced platelet aggregation was about 85 micrograms/ml. Less inhibition was o...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(84)90189-0
更新日期：1984-12-15 00:00:00
abstract：:An in vivo rabbit model of venous thrombosis which includes physiological blood flow was used to compare the efficacy of the potent and specific factor Xa inhibitor recombinant tick anticoagulant peptide (rTAP) with standard heparin in the prevention of venous thrombus formation. In anesthetized rabbits, an autologous...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(93)90200-8
更新日期：1993-08-15 00:00:00
abstract：:Prothrombin time is a standard screening test to monitor patients treated with oral anticoagulants. We hypothesize that INR measurements will not vary a lot within a given day in a given patient. The present study was thus conducted to compare the change of the international normalized ratio (INR) of prothrombin time ...
journal_title：Thrombosis research
pub_type： 临床试验,杂志文章
doi：10.1016/s0049-3848(02)00339-0
更新日期：2002-09-01 00:00:00
abstract：BACKGROUND:Despite treatment, women with von Willebrand disease (VWD) have lower von Willebrand factor (VWF) levels and greater blood loss at delivery than controls. Current weight-based dosing does not account for the ~1.5-fold increase in blood volume in pregnancy. METHODS:To evaluate the feasibility of a trial to p...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2017.05.022
更新日期：2017-08-01 00:00:00
abstract：:The mechanistic paradigm underlying venous thrombosis at atypical locations stems from the observation that most events occur as a result of pathology of the organ system drained by the involved venous segment. Cerebral venous sinus thrombosis stands apart as an exception to this general rule. Although brain and sinus...
journal_title：Thrombosis research
pub_type： 杂志文章,评审
doi：10.1016/j.thromres.2010.04.015
更新日期：2010-08-01 00:00:00
abstract：:Hemostasis, the system of generation and degradation of thrombi, consists of coagulation and fibrinolysis. Whereas global assays to study coagulation have existed for many years, there has been no simple, rapid, and economic routine test for the plasmatic fibrinolysis parameters plasminogen activator inhibitor-1, alph...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/s0049-3848(99)00165-6
更新日期：2000-02-15 00:00:00
abstract：:We studied the stability of three markers of coagulation (prothrombin fragment 1 + 2 (F1 + 2), thrombin-antithrombin III complexes (TAT), and soluble fibrin (SF)) in stored frozen plasma, in addition to one marker of fibrinolysis (total fibrinogen degradation products and fibrin degradation products (TDP)). All marker...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(95)00242-1
更新日期：1996-01-15 00:00:00
abstract：:The use of oral contraceptives (OCs) has been associated with vascular complications. The mechanism(s) by which OCs predispose to thrombotic events remains unclear. Recent studies have demonstrated that postmenopausal (PM) women who take estrogen replacement therapy (ERT) have a decreased incidence of myocardial infar...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(93)90043-n
更新日期：1993-01-15 00:00:00
abstract：BACKGROUND:Deep vein thrombosis (DVT) is a common complication of acute stroke, but the new incidence in the era of improved specialist input in stroke care is yet unknown. The models for VTE diagnosis is well established, but prediction models to target at-risk patients for pharmacological prophylaxis is lacking and r...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2016.04.002
更新日期：2016-06-01 00:00:00
abstract：INTRODUCTION:Association between ADAMTS13 levels and cardiovascular events has been described recently. However, no genetic study of ADAMTS13 in coronary patients has been described. MATERIALS AND METHODS:Based on related populations frequencies and functional studies, we tested three ADAMTS13 polymorphisms: C1342G (Q...
journal_title：Thrombosis research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.thromres.2009.03.008
更新日期：2010-01-01 00:00:00
abstract：:Fasting plasma homocysteine level and the related clinical findings were analysed in 240 consecutive patients with venous thromboembolism. Hyperhomocysteinemia, defined as a plasma level above 20 micromol/l (corresponding to the percentile 95th in the controls), was present in 11.2% of the patients. Plasma homocystein...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/s0049-3848(02)00096-8
更新日期：2002-04-15 00:00:00
abstract：:Calcium accumulating vesicles were prepared from washed human platelets. Ca2+ uptake could be stimulated with calmodulin. The stimulation of Ca2+ uptake was not abolished by the adenylate cyclase inhibitor 2',5'-dideoxyadenosine, thus excluding enhanced cAMP formation as a possible cause for the calmodulin effect. Our...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(86)91697-x
更新日期：1986-02-15 00:00:00
abstract：INTRODUCTION:Quercetin is widely distributed in plants and has been reported to have effects of anti-inflammation and anti-thrombosis. In this study, we evaluated the protective effect of quercetin on LPS-induced experimental DIC in rabbits, and tried to clarify its mechanism against DIC. MATERIALS AND METHODS:LPS-ind...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2013.03.002
更新日期：2013-06-01 00:00:00
abstract：:Heat treatment is employed to diminish the transmission of hepatitis when blood products are administered. It is possible that such a procedure could reduce the biological activity of the proteins and induce changes in structure and aggregation state. We have therefore made in vitro and pharmacokinetic studies of heat...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(87)90435-x
更新日期：1987-12-15 00:00:00
abstract：INTRODUCTION:There is some controversy regarding the effect of CYP2C19 polymorphism on clinical outcome in patients with dual antiplatelet therapy. Chronic kidney disease (CKD) is associated with increased risk of cardiovascular event, but the association between the possession of CYP2C19 loss-of-function (LOF) alleles...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2014.07.039
更新日期：2014-11-01 00:00:00
abstract：INTRODUCTION:Retinal vein occlusion is a major cause of ocular morbidity. The precise mechanism leading to thrombosis in retinal vein occlusion has not yet been clearly elucidated. Several risk factors have been identified, including hypertension diabetes, history of cardiovascular disease, hypercholesterolemia, hyperh...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2009.07.010
更新日期：2009-12-01 00:00:00
abstract：INTRODUCTION:Antiphospholipid syndrome (APS) is a pro-thrombotic autoimmune disease that affects different vascular beds, with potential risk for recurrence. Systemic lupus erythematosus (SLE), specific autoantibodies profile and atherogenic disorders have been described as risk factors for the occurrence of first thro...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2015.10.029
更新日期：2015-12-01 00:00:00
abstract：:We have recently demonstrated that contact activation of the intrinsic coagulation cascade in vitro is accompanied not only by thromboxane (TX) B2 generation but also by the formation of 5-lipoxygenase-derived cysteinyl-leukotrienes (LT). In our present study we have investigated the effects of the vascular wall on th...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(93)90175-n
更新日期：1993-10-01 00:00:00
abstract：:Fucoidan [sulfated poly (L-fucopyranose)] was compared with 6-aminohexanoic acid (6-AH) or CNBr-cleaved fibrinogen (CNBr-Fbg) alone or in combination in enhancing the activation of glutamic plasminogen (Glu-Plg) or lysine plasminogen (Lys-Plg) by two-chain tissue plasminogen activator (t-PA) or LMwt-urokinase or by st...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/0049-3848(95)00111-4
更新日期：1995-08-01 00:00:00
abstract：BACKGROUND:Thrombosis and complement activation are pathogenic features of antiphospholipid syndrome (APS). Their molecular link is Plasma carboxypeptidase-B, also known as thrombin activatable fibrinolysis inhibitor (TAFIa), which plays a dual role: anti-fibrinolytic, by cleaving carboxyl-terminal lysine residues from...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2017.06.028
更新日期：2017-10-01 00:00:00
abstract：INTRODUCTION:The Cilostazol Stroke Prevention Study found that cilostazol, a phosphodiesterase 3 inhibitor, can reduce the risk of subsequent stroke in Japanese patients with cerebral infarction. Here, we measured the effects of cilostazol in vitro on shear-induced platelet aggregation, an important mechanism of thromb...
journal_title：Thrombosis research
pub_type： 杂志文章
doi：10.1016/j.thromres.2006.05.005
更新日期：2007-01-01 00:00:00
abstract：:The aim of this study was to compare the efficacy and safety of prolonged (35 days) thromboprophylaxis with a standard length (7 days) regimen of a low molecular weight heparin in patients undergoing total hip arthroplasty. The study was multicentre, randomised, double-blind, and prospective with two groups. Following...
journal_title：Thrombosis research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0049-3848(98)00018-8
更新日期：1998-03-15 00:00:00
abstract：BACKGROUND:Sampling small volumes of blood may be necessary, particularly in pediatric patients, or in case of difficult or recurrent venipunctures. METHODS:Routine hemostasis test results evaluated in partial- and full-draw evacuated polymer tubes obtained in 4 centers were compared. RESULTS:No relevant discrepancy ...
journal_title：Thrombosis research
pub_type： 杂志文章,多中心研究
doi：10.1016/j.thromres.2010.08.029
更新日期：2010-12-01 00:00:00
