cliot (version 1.0.0)

respiratory_score_asthma_liu: Respiratory Score (Asthma) - Liu et al.

Description

Calculates the Liu Respiratory Score to assess the severity of acute asthma exacerbations in children. The score is based on three clinical parameters: Respiratory Rate (age-adjusted), Wheezing, and Retractions/Accessory Muscle Use.

Usage

respiratory_score_asthma_liu(age_years, respiratory_rate, wheezing_score,
                             retractions_score)

Value

A list containing:

Respiratory_Score

The calculated total score (Range 0-9).

Severity_Classification

Interpretation (Mild <= 3, Moderate 4-7, Severe >= 8).

Arguments

age_years

Numeric. Patient age in years. Used to stratify respiratory rate scoring (<2y, 2-5y, >5y).

respiratory_rate

Numeric. Respiratory rate in breaths per minute. Scoring: <2y: <40(0), 40-59(1), 60-69(2), >=70(3). 2-5y: <30(0), 30-39(1), 40-49(2), >=50(3). >5y: <20(0), 20-24(1), 25-29(2), >=30(3).

wheezing_score

Numeric (0-3). 0: None. 1: End-expiratory only. 2: Throughout expiration. 3: Inspiration and expiration.

retractions_score

Numeric (0-3). Accessory muscle use/Retractions. 0: None. 1: 1 site (e.g., subcostal). 2: 2 sites (e.g., subcostal and intercostal). 3: 3 sites (e.g., subcostal, intercostal, substernal) or nasal flaring.

References

Liu LL, Gallaher MM, Davis RL, et al. Use of a respiratory clinical score to predict the outcome of acute asthma in children. Pediatr Emerg Care. 2004;20(4):243-247. doi:10.1097/01.pec.0000121243.13322.42

Examples

# Example 1: Moderate Exacerbation (3yo)
# RR 35 (1 pt), Wheeze entire exp (2 pts), 1 site retraction (1 pt)
# Score = 4
respiratory_score_asthma_liu(3, 35, 2, 1)

# Example 2: Severe Exacerbation (7yo)
# RR 32 (3 pts), Wheeze Insp/Exp (3 pts), 2 sites (2 pts)
# Score = 8
respiratory_score_asthma_liu(7, 32, 3, 2)