PROLONG Study

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Official Title

D-Dimer Test to Establish Duration of Anticoagulation After a First Idiopathic Episode of Venous Thromboembolism; the Prospective Randomized “Prolong” Study

Objective

The optimal duration of oral anticoagulant treatment in patients with idiopathic venous thromboembolism is still uncertain. The present study addresses the possible role of the D-dimer test in assessing the need for continuation of anticoagulation. The study aims at assessing whether D-dimer assay may have a role in guiding the duration of anticoagulation in these patients.

St. Orsola Hospital

Timeline

Timeline
Start Date September 2002
End Date Not provided
Status Completed

The previous information was derived from ClinicalTrials.gov on 09/25/2013 using the identification number NCT00264277.

Study Description

Study Description
Study Type Interventional
Study Phase Phase 4
Study Design
Allocation Randomised
Endpoint Safety/Efficacy Study
Interventional Model Parallel Assignment
Masking Open Label
Study Details
Primary Purpose Treatment
Condition Deep Vein Thrombosis
Pulmonary Embolism
Intervention Vitamin K antagonist (Coumarin anticoagulants)
Study Arms Not provided
Population Size 600

The previous information was derived from ClinicalTrials.gov on 09/20/2013 using the identification number NCT-----.

Eligibility Criteria

Inclusion Criteria

  • Age > 18 years
  • After a first documented idiopathic proximal deep vein thrombosis and/or pulmonary embolism
  • After at least 3 months of oral anticoagulation
  • After written informed consent

Exclusion Criteria

  • If the Venous thromboembolism occurred:
    • During pregnancy or puerperium
    • After recent (i.e. within three months) fracture or plaster casting of a leg,
    • After immobilization with confinement to bed for three consecutive days
    • After surgery with general anesthesia lasting longer than 30 minutes
  • Patients with:
    • Active cancer
    • Antiphospholipid antibody syndrome
    • Antithrombin deficiency
    • Serious liver disease or renal insufficiency (creatininemia > 2 mg/dL),
    • Other indications for anticoagulation or contraindications for this treatment
    • Limited life expectation
  • Patients who live too far from the clinical center


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