Risk of Recurrent Venous Thrombosis: A Validation Study of the Vienna Prediction Model

Venous Thromboembolism Clinical Trial

Official title:

Identification of Patients at Low Risk of Recurrent Venous Thromboembolism After Stopping Anticoagulant Treatment: A Prospective Multicenter Cohort Study (Validation of the Vienna Prediction Model)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01972243
• Other study ID #: KLI316
• Status: Completed
• Start date: September 2013
• Est. completion date: May 2021

Study information

• Verified date: July 2023
• Source: Medical University of Vienna
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Because of a high recurrence risk after unprovoked venous thromboembolism (VTE) indefinite anticoagulation is recommended, but confers a considerable bleeding risk. It is important to identify patients, in whom the recurrence risk is lower than the expected bleeding risk, and who will not benefit from long term anticoagulation. By use of a scoring model (Vienna Prediction Model), patients can be stratified according to their recurrence risk based on their sex, location of VTE and D-Dimer. Before implementation in routine care, an independent validation is required. Patients with unprovoked VTE will stop anticoagulation after 3-7 months and the recurrence risk will be estimated by use of the Vienna Prediction Model. Low risk patients with a score of <180 will be included and will be left untreated. Patients with a high score will not be included and their management will follow current guidelines. Follow-up will be two years and the endpoint will be recurrent symptomatic VTE.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 800
• Est. completion date: May 2021
• Est. primary completion date: May 2021
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

Age > 18 years symptomatic uni- or bilateral proximal (including the trifurcation area, popliteal, superficial femoral, deep femoral, common femoral and iliac vein) or distal DVT of the leg and/or symptomatic PE.

VTE not provoked by one of the following temporary risk factors: surgery, trauma,pregnancy, cancer, immobilisation.

Exclusion Criteria:

History of previous VTE; anticoagulation for longer than 6 months; reasons for long-term anticoagulation other than VTE; poor patient compliance; no consent to participate

Related Conditions & MeSH terms

• Thromboembolism
• Venous Thromboembolism

Intervention

Other:
• no intervention

Locations

Country	Name	City	State
Austria	Medical University of Vienna	Vienna

Sponsors (1)

Lead Sponsor	Collaborator
Medical University of Vienna

Country where clinical trial is conducted

Austria, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	recurrent venous thromboembolism		2 years