IMPROVE VTE risk score

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sadaf Sharfaei M.D.[2], Seyedmahdi Pahlavani, M.D. [3], Anmol Pitliya, M.B.B.S. M.D.[4]

Overview

The IMPROVE score for venous thromboembolism assesses the risk of VTE among hospitalized medical patients.

IMPROVE VTE Risk Score

The IMPROVE risk score for venous thromboembolism assesses the risk of VTE among hospitalized medical patients.

IMPROVE VTE Risk Score Calculator

Shown below is the calculator for IMPROVE VTE risk score (check all the boxes that apply):

IMPROVE Risk Score Calculator
Variable	Score
Prior episode of VTE	3
Thrombophilia	2
Paralysis of the lower extremity during the hospitalization	2
Current malignancy	2
Immobilization for at least 7 days	1
ICU or CCU admission	1
Age more than 60 years	1
IMPROVE Score:
Interpretation:

Interpretation

The interpretation of the score is as follows:

• Score = 0: Predicted VTE risk through 3 months is 0.4%
• Score = 1: Predicted VTE risk through 3 months is 0.6%
• Score = 2: Predicted VTE risk through 3 months is 1%
• Score = 3: Predicted VTE risk through 3 months is 1.7%
• Score = 4: Predicted VTE risk through 3 months is 2.9%
• Score ≥ 5: Predicted VTE risk through 3 months is 7.2%

See also

• IMPROVEDD score