🦵 IMPROVEDD VTE Risk Score
UseWhen to use: hospitalized medically ill adults when D-dimer is available for prophylaxis decisions.
StrataIMPROVEDD ≥2 identifies heightened VTE risk in APEX derivation — weigh vs bleeding risk.
LimitsWhen not to use: diagnostic PE workup (use Wells/YEARS). · Pitfall: assay ULN mismatch. · Pair with IMPROVE bleeding.
SourceIMPROVEDD (IMPROVE + D-dimer)
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
IMPROVE + D-dimer.
When to use
When to use: hospitalized medically ill adults when D-dimer is available for prophylaxis decisions.
How it works
IMPROVE points + 2 if D-dimer ≥2× ULN.
Key points
- IMPROVE + D-dimer.
- ≥2 higher risk cue.
- Next: prophylaxis decision.
References
- IMPROVEDD (IMPROVE + D-dimer)
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Previous VTE | No |
|---|---|
| Known thrombophilia | No |
| Lower-limb paralysis | No |
| Current cancer | No |
| Immobilised ≥7 days | No |
| ICU/CCU stay | No |
| Age >60 | No |
| D-dimer ≥2× ULN | No / unknown |
→IMPROVEDD0
- IMPROVE core：0
- D-dimer add-on：0
- Cue：IMPROVEDD 0–1 — lower VTE risk band in derivation; still use clinical judgment
| Previous VTE | Yes (+3) |
|---|---|
| Known thrombophilia | Yes (+2) |
| Lower-limb paralysis | Yes (+2) |
| Current cancer | Yes (+2) |
| Immobilised ≥7 days | Yes (+1) |
| ICU/CCU stay | Yes (+1) |
| Age >60 | Yes (+1) |
| D-dimer ≥2× ULN | Yes (+2) |
→IMPROVEDD14
- IMPROVE core：12
- D-dimer add-on：+2 (≥2× ULN)
- Cue：IMPROVEDD ≥2 — heightened VTE risk band through ~77 days in APEX derivation; weigh prophylaxis vs bleeding
Verification & sources · governance
FAQ
Frequently asked questions
- Does IMPROVEDD VTE Risk Score upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is IMPROVEDD VTE Risk Score calculated in practice? Can you show a worked example?
- Inputs: Previous VTE No, Known thrombophilia No, Lower-limb paralysis No, Current cancer No, Immobilised ≥7 days No, ICU/CCU stay No, Age >60 No, D-dimer ≥2× ULN No / unknown → Result: IMPROVEDD 0（IMPROVE core: 0, D-dimer add-on: 0, Cue: IMPROVEDD 0–1 — lower VTE risk band in derivation; still use clinical judgment） Inputs: Previous VTE Yes (+3), Known thrombophilia Yes (+2), Lower-limb paralysis Yes (+2), Current cancer Yes (+2), Immobilised ≥7 days Yes (+1), ICU/CCU stay Yes (+1), Age >60 Yes (+1), D-dimer ≥2× ULN Yes (+2) → Result: IMPROVEDD 14（IMPROVE core: 12, D-dimer add-on: +2 (≥2× ULN), Cue: IMPROVEDD ≥2 — heightened VTE risk band through ~77 days in APEX derivation; weigh prophylaxis vs bleeding）