Caprini Score (VTE)

Caprini Score (VTE): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

Caprini Score (VTE)

Ageyears

Surgery (0 none, 1 minor, 2 major > 45 min or laparoscopy/arthroscopy, 3 lower-limb joint arthroplasty)

BMI > 25 (1 = yes)

Other 1-point factors (leg swelling, varicose veins, pregnancy or delivery < 1 mo, hormonal contraceptives/HRT, sepsis, serious lung disease, MI, heart failure, IBD, bed rest in a medical patient)

Malignancy (1 = yes)

Bed rest > 72 h (1 = yes)

Immobilizing plaster cast (1 = yes)

Central venous catheter (1 = yes)

History of VTE (1 = yes)

Family history of VTE (1 = yes)

Number of thrombophilias (factor V Leiden, prothrombin 20210A, lupus anticoagulant, anticardiolipin antibodies, hyperhomocysteinemia, HIT, other) — 3 points each

Hip, pelvis or leg fracture (1 = yes)

Multiple trauma < 1 month (1 = yes)

Stroke < 1 month (1 = yes)

Acute spinal cord injury < 1 month (1 = yes)

Caprini score

4points

For surgical patients; prophylaxis is decided by a physicianCaprini Score (VTE): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

VTE risk

Moderate

VTE rate without prophylaxis

Age points

What it shows

Health, fitness and clinical calculators with standard formulas — body composition, calories, blood pressure, lipid panels, cardiac scores (CHA₂DS₂-VASc, HEART, TIMI), kidney/liver function (MELD, Child-Pugh), pregnancy and more.

Formula & example

The calculator computes Caprini score (points) from parameters:

Age (years)
Surgery (0 none, 1 minor, 2 major > 45 min or laparoscopy/arthroscopy, 3 lower-limb joint arthroplasty)
BMI > 25 (1 = yes)
Other 1-point factors (leg swelling, varicose veins, pregnancy or delivery < 1 mo, hormonal contraceptives/HRT, sepsis, serious lung disease, MI, heart failure, IBD, bed rest in a medical patient)
Malignancy (1 = yes)
Bed rest > 72 h (1 = yes)
Immobilizing plaster cast (1 = yes)
Central venous catheter (1 = yes)
History of VTE (1 = yes)
Family history of VTE (1 = yes)
Number of thrombophilias (factor V Leiden, prothrombin 20210A, lupus anticoagulant, anticardiolipin antibodies, hyperhomocysteinemia, HIT, other) — 3 points each
Hip, pelvis or leg fracture (1 = yes)
Multiple trauma < 1 month (1 = yes)
Stroke < 1 month (1 = yes)
Acute spinal cord injury < 1 month (1 = yes)

Example 1

Age = 55 years, Surgery (0 none, 1 minor, 2 major > 45 min or laparoscopy/arthroscopy, 3 lower-limb joint arthroplasty) = 2, BMI > 25 (1 = yes) = 1, Other 1-point factors (leg swelling, varicose veins, pregnancy or delivery < 1 mo, hormonal contraceptives/HRT, sepsis, serious lung disease, MI, heart failure, IBD, bed rest in a medical patient) = 0, Malignancy (1 = yes) = 0, Bed rest > 72 h (1 = yes) = 0, Immobilizing plaster cast (1 = yes) = 0, Central venous catheter (1 = yes) = 0, History of VTE (1 = yes) = 0, Family history of VTE (1 = yes) = 0, Number of thrombophilias (factor V Leiden, prothrombin 20210A, lupus anticoagulant, anticardiolipin antibodies, hyperhomocysteinemia, HIT, other) — 3 points each = 0, Hip, pelvis or leg fracture (1 = yes) = 0, Multiple trauma < 1 month (1 = yes) = 0, Stroke < 1 month (1 = yes) = 0, Acute spinal cord injury < 1 month (1 = yes) = 0

→ Caprini score: 4 points

Example 2 (×1.5)

Age = 82.5 years, Surgery (0 none, 1 minor, 2 major > 45 min or laparoscopy/arthroscopy, 3 lower-limb joint arthroplasty) = 3, BMI > 25 (1 = yes) = 1.5, Other 1-point factors (leg swelling, varicose veins, pregnancy or delivery < 1 mo, hormonal contraceptives/HRT, sepsis, serious lung disease, MI, heart failure, IBD, bed rest in a medical patient) = 0, Malignancy (1 = yes) = 0, Bed rest > 72 h (1 = yes) = 0, Immobilizing plaster cast (1 = yes) = 0, Central venous catheter (1 = yes) = 0, History of VTE (1 = yes) = 0, Family history of VTE (1 = yes) = 0, Number of thrombophilias (factor V Leiden, prothrombin 20210A, lupus anticoagulant, anticardiolipin antibodies, hyperhomocysteinemia, HIT, other) — 3 points each = 0, Hip, pelvis or leg fracture (1 = yes) = 0, Multiple trauma < 1 month (1 = yes) = 0, Stroke < 1 month (1 = yes) = 0, Acute spinal cord injury < 1 month (1 = yes) = 0

→ Caprini score: 9.5 points

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FAQ

How is BMI calculated?

BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.

Is BMI accurate for everyone?

No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.

What are the BMI categories?

Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.

What is a better measure than BMI?

Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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Caprini Score (VTE)