Management of Persistent Wheezing After Initial Treatment

Immediate Management

The British Thoracic Society recommends adding ipratropium bromide 500 μg to the next albuterol nebulization and administering systemic corticosteroids immediately for patients with persistent wheezing after 2 albuterol treatments 1, 2
Combining ipratropium bromide 500 μg with the next albuterol dose (5 mg salbutamol or 10 mg terbutaline) is specifically indicated when there is poor response to initial beta-agonist treatments 1, 2, 4, 5
Administering oral prednisolone 2 mg/kg/day (maximum 40 mg/day) or IV hydrocortisone 100 mg every 6 hours is recommended for moderate-to-severe exacerbations 1, 4, 5
Using oxygen (6-8 L/min) as the nebulizer driving gas whenever possible is critical in acute severe asthma to maintain oxygen saturation >90% 1, 4, 5

Continuing nebulized beta-agonist plus ipratropium every 30 minutes to 1 hour initially, and spacing treatments to every 4-6 hours if improvement occurs, is recommended 1, 2, 5
Considering hospital admission if the patient shows poor response after adding ipratropium, and assessing for features indicating severe asthma requiring admission, such as inability to complete sentences, respiratory rate ≥25/min, heart rate ≥110/min, peak expiratory flow ≤50% predicted 1, 2, 4, 5

In children, using salbutamol 5 mg (or 0.15 mg/kg) or terbutaline 10 mg (or 0.3 mg/kg) with ipratropium 250 μg is recommended 2
The British Thoracic Society guidelines explicitly state that ipratropium should be added when initial beta-agonist therapy fails, not after multiple failed attempts 1, 2, 4
In infants and young children with bronchiolitis, a carefully monitored trial of bronchodilators may be reasonable 8
For COPD patients, ipratropium 500 μg every 4-6 hours is particularly effective 6