trip_cast_score: TRIP-Cast Score for Thrombosis Risk Prediction

In cliot: Clinical Indices and Outcomes Tools

TRIP-Cast Score for Thrombosis Risk Prediction

Description

Calculates the TRIP-Cast score to estimate the risk of venous thromboembolism (VTE) in patients with lower limb immobilization (cast or brace). The score stratifies patients into low, moderate, or high risk groups.

Usage

trip_cast_score(age, sex, bmi, oral_contraceptive, vte_history, cancer_history,
                cast_below_knee, mobility, surgery)

Arguments

age	Numeric. Patient age in years. <35: 0 pts. 35-55: 2 pts. >55: 3 pts.
sex	String. Patient sex. "Male": +1 pt. "Female": 0 pts.
bmi	Numeric. Body Mass Index. <25: 0 pts. 25-30: 1 pt. >30: 2 pts.
oral_contraceptive	Numeric (0 or 1). Use of oral contraceptives/hormones. (1 = Yes, +4 pts).
vte_history	Numeric (0 or 1). Personal or family history of VTE (or superficial vein thrombosis). (1 = Yes, +5 pts).
cancer_history	Numeric (0 or 1). History of cancer. (1 = Yes, +3 pts).
cast_below_knee	Numeric (0 or 1). Is the cast/brace strictly below the knee? 1 (Yes): 0 pts. 0 (No/Above knee involvement): +1 pt.
mobility	Numeric (0 or 1). Severely restricted mobility (e.g., non-weight bearing). (1 = Yes, +2 pts).
surgery	Numeric (0 or 1). Surgery performed or planned. (1 = Yes, +3 pts).

Value

A list containing:

TRIP_Cast_Score	The calculated risk score (Range 0-24).
Risk_Category	Classification (Low < 7, Moderate 7-11, High >= 12).
Estimated_VTE_Risk	Estimated 3-month cumulative VTE incidence.

References

Nemeth B, van Adrichem RA, van Hylckama Vlieg A, et al. Venous thrombosis risk after cast immobilization of the lower extremity: the TRIP-cast score. Thromb Haemost. 2015;114(6):1242-1249. doi:10.1160/TH15-03-0197

Examples

# Example 1: Low Risk
# 25yo Male, BMI 22, No Hx, Below Knee cast, Partial weight bearing, No Surgery
# Score = 0 (Age) + 1 (Male) + 0 (BMI) + 0 + 0 + 0 + 0 (BK) + 0 (Mobility) + 0 (Surg) = 1
trip_cast_score(25, "male", 22, 0, 0, 0, 1, 0, 0)

# Example 2: High Risk
# 40yo Female, BMI 32, OCP, Hx VTE, Below Knee, Non-weight bearing, No Surg
# Score = 2 (Age) + 0 (Fem) + 2 (BMI) + 4 (OCP) + 5 (Hx) + 0 + 0 + 2 (Mobility) + 0 = 15
trip_cast_score(40, "female", 32, 1, 1, 0, 1, 1, 0)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.