Prophylactically equivalent doses of Enoxaparin and unfractionated heparin inhibit in vivo coagulation to the same extent.

Abstract:

:This study compared how Enoxaparin and unfractionated (UF) heparin influenced in vivo coagulation in patients randomized to receive, by twice daily subcutaneous injections, either 30 mg of Enoxaparin or 7500 I.U. of UF heparin after elective hip surgery. These two regimens were equally effective in reducing the incidence of post-operative deep vein thrombosis DVT. We compared the concentrations of endogenous thrombin-antithrombin III in pre- and post-surgical plasmas to determine how each prophylactic regimen influenced prothrombinase activity in vivo, and found the same concentrations of endogenous thrombin-antithrombin III in post-heparin and post-Enoxaparin plasmas. However, significantly higher concentrations of endogenous thrombin-antithrombin III were found in pre- and post-surgical plasmas of patients who developed post-operative DVT than the levels found in comparable plasmas of patients who remained DVT-negative, regardless of the drug received for prophylaxis. Human factor Xa was added to an equal volume of each patient's plasmas and the amount of added enzyme inactivated by antithrombin III measured using an enzyme-linked immunosorbent assay for factor Xa-antithrombin III. Post-heparin and post-Enoxaparin plasmas inactivated approximately 4 times more factor Xa than the pre-surgical plasmas, regardless of the clinical outcome. Thus, before and after surgery, a higher than normal in vivo prothrombinase activity may be a significant risk factor for developing post-operative DVT.

journal_name

Br J Haematol

authors

Ofosu FA,Levine M,Craven S,Dewar L,Shafai S,Blajchman MA

doi

10.1111/j.1365-2141.1992.tb06436.x

subject

Has Abstract

pub_date

1992-10-01 00:00:00

pages

400-5

issue

2

eissn

0007-1048

issn

1365-2141

journal_volume

82

pub_type

临床试验,杂志文章,随机对照试验
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    pub_type: 杂志文章,实务指引

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    pub_type: 杂志文章

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    pub_type: 杂志文章,多中心研究

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    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.1982.tb03937.x

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    更新日期:1982-12-01 00:00:00

  • Persistent polyclonal lymphocytosis with binucleated B lymphocytes: a genetic predisposition.

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    journal_title:British journal of haematology

    pub_type: 杂志文章

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  • Endogenous production of carbon monoxide as measured simultaneously in blood and gas phase.

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    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.1975.tb01846.x

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    更新日期:1975-03-01 00:00:00

  • Marrow fibroblasts from patients with myeloproliferative disorders show increased sensitivity to human serum mitogens.

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    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.1988.tb07616.x

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    更新日期:1988-06-01 00:00:00

  • Genetic susceptibility to anthracycline-related congestive heart failure in survivors of haematopoietic cell transplantation.

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    pub_type: 杂志文章

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  • The incidence of dysfunctional antithrombin variants: four cases in 210 patients with thromboembolic disease.

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    pub_type: 杂志文章

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    更新日期:1991-03-01 00:00:00