stumbl_battle_score: STUMBL (Battle) Score for Blunt Chest Wall Trauma

In cliot: Clinical Indices and Outcomes Tools

STUMBL (Battle) Score for Blunt Chest Wall Trauma

Description

Calculates the STUMBL (STUdy of the Management of BLunt chest wall trauma) Score, also known as the Battle Score. This clinical decision rule predicts the risk of complications (e.g., pneumonia, pleural effusion, respiratory failure) in patients with blunt chest wall trauma to guide disposition (discharge vs. admission).

Usage

stumbl_battle_score(age, num_rib_fractures, chronic_lung_disease,
                    anticoagulant_use, spo2_percent)

Arguments

age	Numeric. Patient age in years. (>= 65 years adds 5 points).
num_rib_fractures	Numeric. Number of rib fractures identified on imaging. (>= 3 adds 4 points).
chronic_lung_disease	Numeric (0 or 1). History of chronic lung disease (e.g., COPD, asthma). (1 = Yes, +5 points).
anticoagulant_use	Numeric (0 or 1). Pre-injury use of anticoagulants or antiplatelet medication. (1 = Yes, +4 points).
spo2_percent	Numeric. Oxygen saturation percentage on room air. (< 90% adds 6 points).

Value

A list containing:

STUMBL_Score	The calculated total score (Range 0-24).
Risk_Category	Risk stratification (Low <= 10, High >= 11).
Management_Guidance	Recommendations for discharge or admission based on the score.

References

Battle C, Hutchings H, Lovett S, et al. Predicting outcomes after blunt chest wall trauma: development and external validation of a new prognostic model. Crit Care. 2014;18(3):R98. doi:10.1186/cc13873

Examples

# Example 1: High Risk
# 70yo (+5), 3 ribs (+4), COPD (+5), SpO2 95%
# Score = 14
stumbl_battle_score(70, 3, 1, 0, 95)

# Example 2: Low Risk
# 40yo, 2 ribs, No hx, SpO2 98%
# Score = 0
stumbl_battle_score(40, 2, 0, 0, 98)

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