Abstract:
:The risk for both arterial and venous thrombosis increases with age. Despite the increasing burden of strokes related to atrial fibrillation (AF) and venous thromboembolism (VTE) among older adults, the use of anticoagulant therapy is limited in this population due to the parallel increase in risk of serious hemorrhage. Understanding the risks and their underlying mechanisms would help to mitigate adverse events and improve persistence with these life-saving therapies. The objectives of this review are to: (1) elucidate the age-related physiologic changes that render this high risk subgroup susceptible to hemorrhage, (2) identify mutable risk factors and hazards contributing to an increased bleeding risk in older individuals, and (3) discuss interventions to optimize anticoagulation therapy in this population.
journal_name
Semin Thromb Hemostjournal_title
Seminars in thrombosis and hemostasisauthors
Ko D,Hylek EMdoi
10.1055/s-0034-1389083subject
Has Abstractpub_date
2014-09-01 00:00:00pages
688-94issue
6eissn
0094-6176issn
1098-9064journal_volume
40pub_type
杂志文章,评审abstract::Fibrin formed from fibrinogen is the main component of thrombi. Clot structure is characterized by fiber thickness and pore size, which differs within a given clot and between individuals. Plasma clot architecture is largely determined by the quantity and quality of fibrinogen. Plasma fibrinogen concentrations are mos...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0036-1579636
更新日期:2016-06-01 00:00:00
abstract::Atrial fibrillation (AF) can be secondary to acute pulmonary embolism (PE). This study aimed to investigate the prognostic impact of new-onset AF on patients with acute PE. In this study, 4,288 consecutive patients who were diagnosed with acute PE were retrospectively screened. In total, 77 patients with acute PE and ...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-0040-1718397
更新日期:2020-11-01 00:00:00
abstract::Heparin is a familiar anticoagulant drug with properties that may impede tumor growth; it modifies properties of cells that contribute to malignant dissemination such as angiogenesis, growth factor and protease activity, immune function, proliferation, and gene expression. Heparin has antitumor effects in animal model...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2000-9499
更新日期:2000-01-01 00:00:00
abstract::Sequencing of the gene encoding for von Willebrand factor (VWF) has brought new insight into the physiology of VWF as well as its pathophysiology in the context of von Willebrand disease (VWD). Molecular testing in VWD patients has shown high variability in the overall genetic background of this condition. Almost 600 ...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-0039-3402430
更新日期:2020-06-01 00:00:00
abstract::Mutations in the genes for three complement regulators-complement factor H (CFH), membrane cofactor protein (MCP), and factor I (IF)-have now been described in patients with atypical HUS. The functional effects of these mutations have been studied in detail and have been shown to affect secretion, expression, and regu...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2006-939771
更新日期:2006-03-01 00:00:00
abstract::Coagulation factor XII (FXII), formerly known as Hageman factor, is a plasma glycoprotein which exerts a kaleidoscope of biological functions, including the initiation of the intrinsic pathway of blood coagulation, the activation of the kallikrein-kinin system, and the generation of bradykinin and angiotensin. The lar...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0036-1571338
更新日期:2016-09-01 00:00:00
abstract::With the continued accumulation of clinical and animal studies, it is becoming abundantly clear that the protein C anticoagulant pathway plays a critical role in the regulation of coagulation. Investigations also indicate that this pathway is intimately involved in the interaction of the coagulation and inflammatory s...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2007-1002779
更新日期:1988-04-01 00:00:00
abstract::In the early 1980s, the first external quality assessment schemes (EQAS) regarding parameters of the coagulation laboratory were established in the daily routine of German laboratories. At present, the EQAS performed by INSTAND offers a wide range of global and single parameters of thrombosis and hemostasis. Only the ...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-971812
更新日期:2007-04-01 00:00:00
abstract::Type 2B von Willebrand disease (VWD2B) is a rare, autosomal-dominant inherited bleeding disorder, characterized by an enhanced ristocetin-induced platelet aggregation in platelet-rich plasma and often with variable degree of thrombocytopenia and loss of high-molecular-weight multimers von Willebrand factor (VWF). All ...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0036-1579638
更新日期:2016-07-01 00:00:00
abstract::With the strides being made in the European, Canadian, and American prospective studies of von Willebrand disease (VWD) genotype and phenotype, genetics is increasingly playing a key role in the classification, understanding, and management of VWD. It is anticipated that as gene sequencing becomes easier and more comm...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0028-1103362
更新日期:2008-09-01 00:00:00
abstract::Epidemiological and laboratory studies performed in the last decades have changed our understanding of coagulopathy in cirrhosis, from a condition at increased risk of hemorrhagic events to one at higher thrombotic risk. However, it is not clear whether the decrease in factors that promote (except factor [F] VIII) ver...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-0040-1715102
更新日期:2020-09-01 00:00:00
abstract::While case fatality rates in ischemic stroke tend to decline, the total number of strokes is expected to increase further in the future because of more people reaching a greater age. Acute ischemic stroke, usually caused by chronic arterial hypertension, in most cases is induced either by a sudden loss of perfusion pr...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-998991
更新日期:1996-01-01 00:00:00
abstract::Patients treated with oral anticoagulants (OAC) carry a 7- to 10-fold higher risk of intracerebral hemorrhage (ICH) than patients without OAC. ICH related to oral anticoagulation (OAC-ICH) is a particularly severe form of stroke. The overall incidence of OAC-ICH ranges between 2 and 9 per 100,000 population/year and i...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0033-1357506
更新日期:2013-11-01 00:00:00
abstract::Hemophilia A (HA) and hemophilia B (HB) are rare congenital severe bleeding disorders, that may be controlled by proper administration of adequate prophylaxis with factor VIII (FVIII), and factor IX (FIX) concentrates, respectively, to prevent joint damage due to recurrent bleeding. However, approximately 30% of patie...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0037-1612626
更新日期:2018-09-01 00:00:00
abstract::The prothrombin time (PT) assay is the most clinically ordered coagulation test and is most often used for monitoring of vitamin K antagonist (VKA) therapy (e.g., warfarin), where results are expressed as an international normalized ratio (INR). The INR is in essence the patient's PT "mathematically adjusted" to a sta...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-0028-1104538
更新日期:2008-10-01 00:00:00
abstract::These results show that heparin and dextran sulfate protect endothelial cells from oxygen-free radicals. Heparan sulfate and dermatan sulfate showed mild protection when measuring cell viability but none when examining the presence of LDH in media. These GAGs are obviously not as effective as heparin and dextran sulfa...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract::Mixing patient and normal plasma has been used for many years to assist with making decisions on which direction to proceed for further investigation of abnormally prolonged coagulation tests, namely, either individual coagulation factor measurement or the search for circulating anticoagulants. Mixing tests, however, ...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0032-1304717
更新日期:2012-06-01 00:00:00
abstract::Thrombosis is characterized by the formation of in vivo blood clots that are localized within arterial or venous blood vessels. These thrombi form beyond the need for physiologically healthy hemostatic responses and can lead to significant medical issues for affected individuals. Unfortunately, the existing standard-o...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-0039-1697946
更新日期:2020-07-01 00:00:00
abstract::Disseminated intravascular coagulation (DIC) is a syndrome characterized by systemic intravascular activation of coagulation leading to widespread deposition of fibrin in the circulation. There is ample experimental and pathological evidence that the fibrin deposition contributes to multiple organ failure. The massive...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2001-18862
更新日期:2001-12-01 00:00:00
abstract::The extrinsic pathway is probably the predominant pathway in initiating blood coagulation in inflammatory lung diseases. Tissue factor pathway inhibitor (TFPI) is a Kunitz-type protease inhibitor of factor VIIa/tissue factor in the presence of factor Xa. As it has been shown recently that TFPI plasma levels are increa...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-996069
更新日期:1997-01-01 00:00:00
abstract::Pulmonary embolism (PE) has long been described in children. Nevertheless, most of the algorithms applied to patients within this age range, from diagnosis to therapy, have been adapted from adult protocols. This article reviews the progresses that occurred to PE in children placing them in historical perspective with...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0031-1297168
更新日期:2011-10-01 00:00:00
abstract::The PFA-100 (platelet function analyzer) is a relatively new tool for the investigation of primary hemostasis. This article reviews the history of the PFA-100 and details its clinical utility in several settings. The PFA-100 was first introduced to us in 1995 in an issue of Seminars in Thrombosis And Hemostasis, which...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0029-1145254
更新日期:2008-11-01 00:00:00
abstract::Polycystic ovarian syndrome (PCOS) affects 12 to 19% of women and has reproductive and metabolic features (endothelial dysfunction, increased diabetes, and cardiovascular risk factors). It also appears to have altered coagulation and fibrinolysis with a prothrombotic state with epidemiological evidence of increased ve...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 临床试验,杂志文章
doi:10.1055/s-0035-1564837
更新日期:2016-02-01 00:00:00
abstract::CD34 (+) progenitor cells are a promising source of regeneration in atherosclerosis or ischemic heart disease. However, as recently published, CD34(+) progenitor cells have the potential to differentiate not only into endothelial cells but also into foam cells upon interaction with platelets. The mechanism of platelet...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-0030-1251499
更新日期:2010-03-01 00:00:00
abstract::Platelet-lowering therapy in myeloproliferative disorders includes cytostatic drugs, mainly hydroxyurea, interferon alpha, and anagrelide. Anagrelide is the latest addition to the therapeutic arsenal, and the basis for its use is reviewed. The platelet-lowering efficacy is 70 to 80% in essential thrombocythemia, and t...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2006-939437
更新日期:2006-04-01 00:00:00
abstract::Protein C replacement therapy with a monoclonal antibody purified, virus inactivated protein C concentrate was carried out in nine infants (three male, six female) with severe congenital protein C deficiency and life-threatening purpura fulminans and/or thrombosis associated with disseminated intravascular coagulation...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2007-1000658
更新日期:1995-01-01 00:00:00
abstract::Obtaining a personal history of bleeding is a critical component to the diagnosis of von Willebrand disease (VWD). The collection of this information can be challenging for physicians, however, as the reporting and interpretation of bleeding symptoms is subjective. The need for more precise quantification of bleeding ...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-0036-1597289
更新日期:2017-07-01 00:00:00
abstract::The risk for arteriosclerosis and thrombosis of patients with severe hyperhomocysteinemia is reduced by homocysteine-lowering therapy. Whether this is the case in patients with mild hyperhomocysteinemia remains to be proved. Another challenge for researchers is to establish a satisfying pathological mechanism of the v...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章,评审
doi:10.1055/s-2000-8467
更新日期:2000-01-01 00:00:00
abstract::The functional operation of the cell surface pro-u-PA and plasminogen activating system has previously been shown to depend on the assembly of u-PA receptors, plasminogen binding sites, and their respective ligands at the focal adhesions of cell extensions. We now show that additional factors operate that affect the p...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-2007-1002610
更新日期:1991-07-01 00:00:00
abstract::Neonatal hemostasis differs qualitatively, but in particular quantitatively, from hemostasis in older children and adults. Nevertheless, hemostasis in healthy neonates is functionally stable with no tendency to bleeding or thrombotic complications. In sick neonates, however, risk factors may disrupt this equilibrium a...
journal_title:Seminars in thrombosis and hemostasis
pub_type: 杂志文章
doi:10.1055/s-0036-1592299
更新日期:2016-10-01 00:00:00