Internal Medicine · Haematology · ICU and Critical Care
IMPROVE VTE Risk Score calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
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0
Low VTE risk (score 0–1)
Band: Low VTE risk (score 0–1)
Interpretation. Low VTE risk (score 0–1)
Suggested management. Interpret within the IMPROVE registry population (acutely ill hospitalized medical patients) and alongside full clinical assessment.
IMPROVE VTE Risk Score: 0 — Low VTE risk (score 0–1). Interpretation: Low VTE risk (score 0–1) What to do: Interpret within the IMPROVE registry population (acutely ill hospitalized medical patients) and alongside full clinical assessment. Inputs: Previous venous thromboembolism (+3): false; Known thrombophilia (+2): false; Current lower-limb paralysis (+2): false; Current cancer (+2): false; Immobilized ≥7 days (immediately before and during admission) (+1): false; ICU or CCU stay (+1): false; Age >60 years (+1): false Source: Spyropoulos AC et al. Predictive and associative models to identify hospitalized medical patients at risk for VTE. Chest. 2011;140:706-714. DOI: 10.1378/chest.10-1944. PMID: 21436241. Scope: IMPROVE 7-factor associative model: previous VTE 3, known thrombophilia 2, current lower-limb paralysis 2, current cancer 2, immobilization >=7 days 1, ICU/CCU stay 1, age >60 years 1; 0-1 low, 2-3 moderate, >=4 high (AHRQ VTE guide Appendix B; Am J Med 2012 table). (2011)
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Clinical inputs
- Previous venous thromboembolism (+3)
- Known thrombophilia (+2)
- Current lower-limb paralysis (+2)
- Current cancer (+2)
- Immobilized ≥7 days (immediately before and during admission) (+1)
- ICU or CCU stay (+1)
- Age >60 years (+1)
Primary source
Spyropoulos AC et al. Predictive and associative models to identify hospitalized medical patients at risk for VTE. Chest. 2011;140:706-714. DOI: 10.1378/chest.10-1944. PMID: 21436241. Scope: IMPROVE 7-factor associative model: previous VTE 3, known thrombophilia 2, current lower-limb paralysis 2, current cancer 2, immobilization >=7 days 1, ICU/CCU stay 1, age >60 years 1; 0-1 low, 2-3 moderate, >=4 high (AHRQ VTE guide Appendix B; Am J Med 2012 table). (2011)
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