blast_lung_injury_severity: Blast Lung Injury Severity Score (BLISS)

In cliot: Clinical Indices and Outcomes Tools

Blast Lung Injury Severity Score (BLISS)

Description

Calculates the Blast Lung Injury Severity Score to stratify patients with primary blast lung injury (PBLI). The score guides ventilator management strategies based on the severity of lung injury, assessing oxygenation (PaO2/FiO2), chest x-ray findings, and the presence of a bronchopleural fistula.

Usage

blast_lung_injury_severity(pao2_fio2_ratio, chest_xray_findings,
                           bronchopleural_fistula)

Arguments

pao2_fio2_ratio	Numeric. The ratio of arterial partial pressure of oxygen to fraction of inspired oxygen (PaO2/FiO2). > 200: 0 points. 60 - 200: 2 points. < 60: 4 points.
chest_xray_findings	Numeric (0-2). Findings on Chest X-ray. 0: Localized lung infiltrates (1 point). 1: Bilateral or unilateral lung infiltrates (not massive bilateral) (2 points). 2: Massive bilateral lung infiltrates (3 points).
bronchopleural_fistula	Numeric (0 or 1). Presence of a Bronchopleural Fistula. (1 = Yes, +1 point).

Value

A list containing:

BLISS_Score	The calculated total score.
Severity_Category	Classification (Mild, Moderate, Severe).
Ventilator_Management	Recommendations for mechanical ventilation settings (PEEP, modes) based on severity.

References

Pizov R, Oppenheim-Eden A, Matot I, et al. Blast lung injury from explosion of a bomb in a civilian bus. Chest. 1999;115(1):165-172. doi:10.1378/chest.115.1.165

Examples

# Example 1: Moderate Injury
# PF 150 (2 pts), Bilateral infiltrates (2 pts), No BPF (0 pts)
# Score = 4
blast_lung_injury_severity(150, 1, 0)

# Example 2: Severe Injury
# PF 50 (4 pts), Massive bilateral (3 pts), BPF present (1 pt)
# Score = 8
blast_lung_injury_severity(50, 2, 1)

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