pedsrc_bat_rule: PedSRC Rule for Pediatric Blunt Abdominal Trauma

In cliot: Clinical Indices and Outcomes Tools

PedSRC Rule for Pediatric Blunt Abdominal Trauma

Description

Calculates the risk stratification for Intra-abdominal Injury (IAI) in pediatric patients with blunt abdominal trauma, based on the Pediatric Surgery Research Collaborative (PedSRC) guidelines. The rule identifies patients at very low risk for IAI who may safely avoid abdominal CT scans.

Usage

pedsrc_bat_rule(abdominal_tenderness, abdominal_wall_trauma, gcs_score, ast, alt,
                urinalysis_hematuria_gt_5_rbc, abnormal_xray = 0)

Arguments

abdominal_tenderness	Numeric (0 or 1). Presence of abdominal tenderness on physical examination. (1 = Yes).
abdominal_wall_trauma	Numeric (0 or 1). Evidence of abdominal wall trauma, such as bruising or a seatbelt sign. (1 = Yes).
gcs_score	Numeric. Glasgow Coma Scale score. (GCS < 14 is a risk factor).
ast	Numeric. Aspartate Aminotransferase level in U/L. (> 200 U/L is a risk factor).
alt	Numeric. Alanine Aminotransferase level in U/L. (> 125 U/L is a risk factor).
urinalysis_hematuria_gt_5_rbc	Numeric (0 or 1). Presence of microscopic hematuria (> 5 RBC/hpf) on urinalysis. (1 = Yes).
abnormal_xray	Numeric (0 or 1). Presence of abnormal findings on chest or pelvic X-ray (e.g., rib/pelvic fracture), if performed. (1 = Yes, 0 = No/Not Performed).

Value

A list containing:

Risk_Classification	"Very Low Risk" if no criteria are met, otherwise "Not Low Risk".
Recommendation	Clinical guidance regarding the need for CT imaging.
Criteria_Present	List of positive risk factors identified.

References

Streck CJ, Vogel AM, Zhang J, et al. Pediatrics Surgery Research Collaborative (PedSRC). Derivation and validation of a clinical prediction rule for pediatric blunt abdominal trauma.

Examples

# Example 1: Low Risk
# No tenderness, no trauma sign, GCS 15, normal labs
pedsrc_bat_rule(0, 0, 15, 40, 35, 0, 0)

# Example 2: High Risk
# Seatbelt sign present (1), AST 250, Hematuria present (1)
pedsrc_bat_rule(0, 1, 15, 250, 40, 1, 0)

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