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Thromboprophylaxis in Critically Ill Patients

This study has been terminated.
Information provided by:
Medical University of Vienna Identifier:
First received: February 20, 2007
Last updated: NA
Last verified: February 2007
History: No changes posted

Intensive care patients are at high risk to develop deep venous thrombosis and pulmonary embolism. Despite anticoagulation with heparin 7% of ICU patients suffer from this serious complication. Optimal regimens for prevention of VTE have been established in medical patients only and are not known for ICU patients.

It was therefore the aim of this study to compare the bioavailability of a low molecular weight heparin in ICU patients and in medical patients. Furthermore, we looked wether a 50% dose increase resulted in better bioavailability of this drug.

Condition Intervention Phase
Venous Thromboembolism Drug: dalteparin Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Thromboprophylaxis in Critically Ill Patients: a Prospective, Randomized Study Comparing Anti-Xa Activities Following Subcutaneous Administration of 5000 IU and 7500 IU Dalteparin

Further study details as provided by Medical University of Vienna:

Primary Outcome Measures:
  • Area under the curve of measured anti-Xa activities between baseline and 12 hours (AUC-anti-Xa0-12).

Secondary Outcome Measures:
  • Peak anti-Xa activities at any time (C-max anti-Xa)
  • Time of peak anti-Xa-activities (t-max anti-Xa).

Estimated Enrollment: 90
Study Start Date: April 2003
Estimated Study Completion Date: April 2005
Detailed Description:

Background: The optimal dose regimen of low molecular weight heparins (LMWH) for thromboprophylaxis in critically ill patients is unknown.

Objectives: We performed a prospective, randomized study to determine anti-Xa activities following subcutaneous administration of 5000 IU or 7500 IU dalteparin for thromboprophylaxis in ICU patients compared with medical patients receiving the standard dose of 5000 IU.

Patients and Methods: Twenty-five ICU patients received 7500 IU (group 1) and 29 ICU patients received 5000 IU dalteparin subcutaneously (group 2) for thromboprophylaxis. Twenty-nine medical patients receiving 5000 IU dalteparin served as control group (group 3).


Ages Eligible for Study:   19 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Requirement for prophylactic anticoagulation, patient age ³19 years, creatinine clearance within normal range, prothrombin time >30% and thrombocyte counts >100 G/l.

Exclusion Criteria:

  • Estimated time of admission less than 24 hours, full anticoagulation, renal failure, history of heparin-induced thrombocytopenia, hereditary or acquired coagulation disorders.
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Please refer to this study by its identifier: NCT00437697

Medical University of Vienna
Vienna, Austria, 1090
Sponsors and Collaborators
Medical University of Vienna
Principal Investigator: Ute Priglinger, MD Medical University of Vienna
  More Information Identifier: NCT00437697     History of Changes
Other Study ID Numbers: 008/2003
Study First Received: February 20, 2007
Last Updated: February 20, 2007

Keywords provided by Medical University of Vienna:
dalteparin, critically ill, thromboprophylaxis

Additional relevant MeSH terms:
Critical Illness
Venous Thromboembolism
Disease Attributes
Pathologic Processes
Embolism and Thrombosis
Vascular Diseases
Cardiovascular Diseases
Heparin, Low-Molecular-Weight
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action processed this record on August 18, 2017