Surgical-Inpatient VTE Risk (Caprini Score) — free guideline decision tool
The Caprini Risk Assessment Model stratifies VTE risk in surgical inpatients; whether and how to give prophylaxis follows current guidelines and local protocol.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
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.
| Age | 41–60 yr |
|---|---|
| Surgery | Minor (anaesthesia < 45 min) |
| BMI > 25 (obesity) | Yes |
| Swollen legs (current) | Yes |
| Varicose veins | Yes |
| Pregnancy or postpartum (< 1 month) | Yes |
| Recurrent miscarriage / unexplained stillbirth history | Yes |
| Oral contraceptive or HRT | Yes |
| Sepsis (< 1 month) | Yes |
| Serious lung disease / pneumonia (< 1 month) | Yes |
| Abnormal pulmonary function (COPD) | Yes |
| Acute myocardial infarction | Yes |
| Congestive heart failure (< 1 month) | Yes |
| History of inflammatory bowel disease | Yes |
| Medical patient on bed rest | Yes |
| Malignancy (past or present) | Yes |
| Confined to bed > 72 hours | Yes |
| Immobilising plaster cast (< 1 month) | Yes |
| Central venous access | Yes |
| History of VTE | Yes |
| Family history of VTE | Yes |
| Factor V Leiden mutation | Yes |
| Prothrombin G20210A mutation | Yes |
| Lupus anticoagulant | Positive |
| Anticardiolipin antibodies | Positive |
| Elevated serum homocysteine | Yes |
| Heparin-induced thrombocytopenia (HIT) | Yes |
| Other congenital / acquired thrombophilia | Yes |
| Stroke (< 1 month) | Yes |
| Elective lower-extremity arthroplasty | Yes |
| Hip, pelvis or leg fracture (< 1 month) | Yes |
| Acute spinal cord injury (< 1 month) | Yes |
| Multiple trauma (< 1 month) | Yes |
→VTE riskHigh
- Caprini score：75 points
- Risk level：High (very low 0 / low 1–2 / moderate 3–4 / high ≥5, ACCP 2012)
- Basis：Caprini RAM; ACCP 2012; ASH 2019
Common questions
What is Surgical-Inpatient VTE Risk (Caprini Score)?
The Caprini Risk Assessment Model stratifies VTE risk in surgical inpatients; whether and how to give prophylaxis follows current guidelines and local protocol.
How is Surgical-Inpatient VTE Risk (Caprini Score) calculated? What is the core formula?
Caprini sums 1-, 2-, 3- and 5-point risk factors (age band, surgery type, comorbidities, thrombophilia, recent stroke/fracture/spinal-cord injury). Bands: very low 0, low 1–2, moderate 3–4, high ≥ 5. Tick risk factors and sum; ACCP 2012 bands 0 / 1–2 / 3–4 / ≥5.
When is Surgical-Inpatient VTE Risk (Caprini Score) used?
Perioperative VTE risk stratification for surgical inpatients.
How should Surgical-Inpatient VTE Risk (Caprini Score) results be interpreted?
The Caprini score stratifies VTE risk in surgical inpatients (ACCP 2012: 0 very low, 1–2 low, 3–4 moderate, ≥5 high). Whether and how to give prophylaxis follows current guidelines such as ACCP 2012 and ASH 2019 and local protocol, together with a bleeding-risk assessment. Cut-offs vary slightly between versions.
What are the key clinical points for Surgical-Inpatient VTE Risk (Caprini Score)?
Caprini bands: very low 0, low 1–2, moderate 3–4, high ≥5 (ACCP 2012). Whether and how to give prophylaxis follows current guidelines and local protocol. Assess bleeding risk at the same time.
What are the limits and cautions when using Surgical-Inpatient VTE Risk (Caprini Score)?
For surgical inpatients; use Padua for medical patients. Cut-offs vary slightly between versions (2005/2010/2013). For licensed clinicians; does not replace clinical judgement. For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
Does Surgical-Inpatient VTE Risk (Caprini 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 Surgical-Inpatient VTE Risk (Caprini Score) calculated in practice? Can you show a worked example?
Inputs: Age 41–60 yr, Surgery Minor (anaesthesia < 45 min), BMI > 25 (obesity) Yes, Swollen legs (current) Yes, Varicose veins Yes, Pregnancy or postpartum (< 1 month) Yes, Recurrent miscarriage / unexplained stillbirth history Yes, Oral contraceptive or HRT Yes… → Result: VTE risk High（Caprini score: 75 points, Risk level: High (very low 0 / low 1–2 / moderate 3–4 / high ≥5, ACCP 2012), Basis: Caprini RAM; ACCP 2012; ASH 2019）
Run Surgical-Inpatient VTE Risk (Caprini Score) now
The Caprini Risk Assessment Model stratifies VTE risk in surgical inpatients; whether and how to give prophylaxis follows current guidelines and local protocol.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.