Pediatric Respiratory Distress: Croup, Epiglottitis and Bronchiolitis

A child with respiratory distress can deteriorate quickly because a small amount of swelling or secretions occupies a large proportion of a small airway. The first bedside task is therefore not to label the illness from one sound; it is to identify where the obstruction is and whether the child is still compensating. Croup and epiglottitis are upper-airway problems, so stridor, voice change, posture, drooling, and the effect of agitation carry more diagnostic weight than wheeze. Bronchiolitis affects the small lower airways, so tachypnea, crackles, wheeze, feeding difficulty, and hypoxemia dominate the picture. The same retractions can occur in all three conditions, but the associated findings determine the safe response. A calm child held upright by a caregiver is easier to assess and less likely to worsen from crying. Avoid turning a respiratory assessment into an airway emergency: perform only the observations and procedures that will change immediate management, and escalate before the child becomes fatigued, cyanotic, or less responsive.