IMPROVE VTE Risk Score
IMPROVE VTE risk score (Spyropoulos 2011): prior VTE (3), thrombophilia (2), lower-limb paralysis (2), cancer (2), immobilized >= 7 days (1), ICU/CCU stay (1), age > 60 (1).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Prior VTE
- No
- Known thrombophilia
- No
- Lower-limb paralysis
- No
- Active cancer
- Yes
- Immobilized >= 7 days
- Yes
- ICU / CCU stay
- No
- Age > 60 years
- Yes
Result: IMPROVE-VTE 4 of 12: candidate for extended-duration post-discharge VTE prophylaxis per Spyropoulos 2011 (cutoff >=4).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- <2
- Low VTE risk per Spyropoulos 2011; prophylaxis not routinely indicated.
- 2-3
- Candidate for inpatient VTE prophylaxis per Spyropoulos 2011.
- >=4
- Candidate for extended-duration post-discharge VTE prophylaxis per Spyropoulos 2011.
What you enter
- Prior VTE (3)
- Known thrombophilia (2)
- Lower-limb paralysis (2)
- Active cancer (2)
- Immobilized >= 7 days (1)
- ICU / CCU stay (1)
- Age > 60 years (1)
How this is calculated
Spyropoulos AC, Anderson FA Jr, FitzGerald G, et al. Predictive and associative models to identify hospitalized medical patients at risk for VTE. Chest. 2011;140(3):706-714. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.