Alberta Croup Severity

Mild

Occasional barky cough, no audible stridor at rest, and no to mild suprasternal and/or intercostals indrawing.

Moderate

Frequent barky cough, easily audible stridor at rest, and suprasternal and sterna wall retraction at rest, but no or little distress or agitation.

Severe

Frequent barky cough, prominent inspiratory and, occasionally, expiratory stridor, marked sterna wall retractions, and significant distress and agitation.

Impending Respiratory Failure

Barky cough (often not prominent), audible stridor at rest (occasionally hard to hear), sternal wall retractions (may not be marked), lethargy or decreased level of consciousness, and often dusky appearance without supplemental oxygen.

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