This paper describes the 2013 version of the Caprini Risk Assessment Model (RAM) and provides detailed completion guidelines for surgical patients. It explains how to accurately score each risk factor and when and how the tool should be administered to ensure consistent VTE risk stratification. The target population is surgical patients, with specific attention to orthopedic procedures including total joint arthroplasty and hip fracture.
Every orthopedic procedure carries VTE risk, and the Caprini RAM is the tool that converts that risk into a specific prophylaxis decision.
The most testable concept here is that the high-risk threshold is NOT the same across populations. Using the general surgery cutoff of ≥5 in an arthroplasty patient will drastically underidentify who needs anticoagulation — the TJA cutoff is ≥10, and hip fracture patients require ≥12 to flag very high risk.
Two clinical pearls to apply immediately: first, always ask about family VTE history going back to third-degree relatives — this is the most commonly missed risk factor, and missing it can cost 3 points. Second, female patients on hormonal contraception with BMI >25 carry a 10-fold thrombotic risk multiplier and may need counseling about pausing estrogen-containing medications before elective surgery.
The Caprini RAM is dynamic. A patient who scores 8 preoperatively and then develops a postoperative infection requiring a PICC line may cross into a higher risk category predischarge — reassess the score before sending them home.
This paper describes the 2013 version of the Caprini Risk Assessment Model (RAM) and provides detailed completion guidelines for surgical patients. It explains how to accurately score each risk factor and when and how the tool should be administered to ensure consistent VTE risk stratification. The target population is surgical patients, with specific attention to orthopedic procedures including total joint arthroplasty and hip fracture.
Every orthopedic procedure carries VTE risk, and the Caprini RAM is the tool that converts that risk into a specific prophylaxis decision.
The most testable concept here is that the high-risk threshold is NOT the same across populations. Using the general surgery cutoff of ≥5 in an arthroplasty patient will drastically underidentify who needs anticoagulation — the TJA cutoff is ≥10, and hip fracture patients require ≥12 to flag very high risk.
Two clinical pearls to apply immediately: first, always ask about family VTE history going back to third-degree relatives — this is the most commonly missed risk factor, and missing it can cost 3 points. Second, female patients on hormonal contraception with BMI >25 carry a 10-fold thrombotic risk multiplier and may need counseling about pausing estrogen-containing medications before elective surgery.
The Caprini RAM is dynamic. A patient who scores 8 preoperatively and then develops a postoperative infection requiring a PICC line may cross into a higher risk category predischarge — reassess the score before sending them home.