Paediatrics · Emergency Medicine · Pulmonology

Pediatric Asthma Severity Score (PASS) for Asthma Exacerbation Severity calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Wheezing

Score each examination finding 0, 1 or 2. The total is 0 to 6.

Work of breathing

Prolonged expiration

Result

3 fields remaining

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Primary source

Gorelick MH, Stevens MW, Schultz TR, Scribano PV. Performance of a novel clinical score, the Pediatric Asthma Severity Score (PASS), in the evaluation of acute asthma. Acad Emerg Med. 2004;11:10-18. Item descriptors read from the Children's Hospital of Philadelphia asthma clinical pathways (Emergency Department assessment key points, PICU and primary care severity pages), which print the PASS with range 0-6. Wheezing: 0 none or end of expiration only; 1 throughout expiration; 2 inspiratory and expiratory, or absent due to poor air exchange. Work of breathing: 0 normal or minimal retractions; 1 intercostal retractions; 2 suprasternal retractions, abdominal breathing. Prolonged expiration: 0 normal or minimally prolonged; 1 moderate; 2 severely prolonged. The pathways print no total-score cutoffs for mild, moderate or severe. (2004)

Scope: Children with an acute asthma exacerbation, scored from three examination findings. It gives a 0 to 6 total with no published severity cutoffs and does not set treatment.

Last reviewed 2026-10-18

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Professional use only

For qualified clinicians. Independently verify inputs, calculations, source guidance, and applicability before any clinical action. This calculator does not replace clinical judgment.

Source: Gorelick MH, Stevens MW, Schultz TR, Scribano PV. Performance of a novel clinical score, the Pediatric Asthma Severity Score (PASS), in the evaluation of acute asthma. Acad Emerg Med. 2004;11:10-18. Item descriptors read from the Children's Hospital of Philadelphia asthma clinical pathways (Emergency Department assessment key points, PICU and primary care severity pages), which print the PASS with range 0-6. Wheezing: 0 none or end of expiration only; 1 throughout expiration; 2 inspiratory and expiratory, or absent due to poor air exchange. Work of breathing: 0 normal or minimal retractions; 1 intercostal retractions; 2 suprasternal retractions, abdominal breathing. Prolonged expiration: 0 normal or minimally prolonged; 1 moderate; 2 severely prolonged. The pathways print no total-score cutoffs for mild, moderate or severe. (2004)

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Clinical inputs

Wheezing
Work of breathing
Prolonged expiration

Primary source

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