Management of Pediatric Asthma in the Yellow Zone

Understanding the Condition and Treatment

The British Thoracic Society recommends administering 2 puffs of β agonist via a large volume spacer and repeating 10-20 times if a nebulizer is unavailable 1, 2
10-20 puffs of salbutamol via a metered-dose inhaler with spacer is equivalent to one 5 mg nebulization treatment, as recommended by guidelines when a nebulizer is unavailable 1, 2
Each puff delivers approximately 100 mcg of salbutamol, so 10-20 puffs provides 1-2 mg total dose, which approximates the 2.5-5 mg nebulized dose 3

Administer 4-8 puffs of salbutamol via MDI with spacer every 20 minutes for up to 3 doses (total 12-24 puffs over one hour) 3
Start oral prednisone 1-2 mg/kg (maximum 60 mg) immediately when yellow zone symptoms appear, not after waiting to see if bronchodilators work 3, 4
Reassess the child 15-30 minutes after each bronchodilator dose to determine response 1, 2

If the child cannot complete sentences in one breath, has pulse >110 bpm, respiratory rate >25/min, or symptoms persist after the first round of treatment, they should seek immediate medical attention rather than continuing home treatment 1, 2
Parents must come to clinic/emergency immediately if the child's respiratory rate remains >25 breaths/minute after treatment, pulse remains >110 bpm after treatment, or the child appears exhausted, drowsy, or confused 1, 2

The American Academy of Pediatrics and other guideline societies emphasize that yellow zone is an aggressive upfront treatment with frequent bronchodilator dosing (every 20 minutes) and immediate oral corticosteroids to prevent progression 3, 4
Yellow zone IS a short-term intervention (1-2 hours maximum at home before seeking help if not improving) 1, 2
Ensure parents have a large volume spacer and verify proper inhaler technique at every visit, as inadequate technique is a common cause of treatment failure 1, 2, 3, 4