Table 2. Caprini risk assessment model.
| One point | Two points | Three points | Five points |
|---|---|---|---|
| Age 41-60 y | Age 61-74 y | Age > 75 y | Stroke (< 1 mo) |
| Minor surgery | Arthroscopic surgery | History of VTE | Elective arthroplasty |
| BMI > 25 kg/m2 | Major open surgery (> 45 min) | Factor V Leiden | Hip, pelvis, or leg fracture |
| Swollen legs | Laparoscopic surgery (> 45 min) | Lupus anticoagulant | Acute spinal cord injury (< 1 mo) |
| Varicose veins | Malignancy | Anticardiolipin antibodies | |
| Pregnancy or postpartum | Confined to bed (> 72 hour) | Elevated serum homocysteine | |
| History of spontaneous abortion | Immobilizing cast | Heparin-induced thrombocytopenia | |
| Oral contraceptives | Central venous access | Other congenital or acquired thrombophilia | |
| Sepsis (< 1 mo) | |||
| COPD, pneumonia (< 1 mo) | |||
| Abnormal PFTs | |||
| Acute myocardial infarction | |||
| Congestive heart failure | |||
| inflammatory bowel disease | |||
| Bed rest |
Abbreviations: BMI, body mass index; COPD, chronic obstructive pulmonary disease; PFTs, pulmonary function tests; VTE, venous thromboembolism.