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
Citation
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.