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A Practical Guide to Haemostasis


Assessing the Risk of Venous Thromboembolism [VTE] in Hospitalised Medical Patients:
The IMPROVE Predictive Score
The IMPROVE Associative Score
The IMPROVEDD Score

Introduction

The IMPROVE [International Medical Prevention Registry on Venous Thromboembolism] Predictive score was designed to assesses the risk of VTE in hospitalised medical patients.
The IMPROVE Predictive score for VTE includes 4 independent risk factors for VTE present at admission.
The IMPROVE Associative score includes 7 variables present either at admission or during hospitalization.
The IMPROVEDD score adds D-dimer as a recognized risk factor to the conventional IMPROVE associative score.


The IMPROVE Associative Score:


This predicts the VTE risk in medical patients during hospitalisation and includes 7 variables present either at admission or during hospitalisation.

Select Criteria:

Previous VTE
Yes
3 Points
Thrombophilia
Yes
2 Points
Paralysis of the lower extremities during hospitalisation
Yes
2 Points
Current Malignancy
Yes
2 Points
Immobilisation for at least 7 days
Yes
1 Point
ICU or CCU admission
Yes
1 Point
Age >60 yrs
Yes
1 Point


Score
[Max score 12]

IMPROVE Associative Score
  3-month VTE Risk
0 0.4%
1 0.6%
2 1.0%
3 1.7%
4 2.9%
≥5 7.2%



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