Management of Asthma Exacerbations
Initial Assessment and Treatment
- The British Thoracic Society recommends immediate treatment with supplemental oxygen, rapid-acting bronchodilators (salbutamol 5 mg or terbutalina 10 mg), and systemic corticosteroids (prednisolone 30-60 mg oral or hydrocortisone 200 mg IV) for asthma exacerbations, with treatment intensity and frequency determined by clinical severity 1, 2.
- For moderate asthma exacerbations, the British Medical Journal suggests treatment with salbutamol nebulized 5 mg or terbutalina 10 mg with oxygen at 40-60%, and prednisolone 30-60 mg oral, with reevaluation at 15-30 minutes 1, 2.
Subsequent Management Algorithm
- If the patient improves (15-30 minutes after initial treatment), the British Thoracic Society recommends continuing oxygen at 40-60%, prednisolone 30-60 mg daily (or hydrocortisone 200 mg IV every 6 hours), and salbutamol nebulized every 4-6 hours, with monitoring of peak expiratory flow (PEF) every 4 hours 1, 2.
- If the patient does not improve (15-30 minutes after initial treatment), the British Medical Journal suggests continuing oxygen and corticosteroids, increasing the frequency of salbutamol nebulization to every 15-30 minutes, and adding ipratropium 0.5 mg to the nebulizer every 6 hours 1, 2.
Hospitalization Criteria
- The British Thoracic Society recommends hospitalization for patients with potentially life-threatening characteristics, severe asthma exacerbations persisting after initial treatment, PEF <33% after treatment, recent nocturnal symptoms, previous hospitalizations or severe attacks, or inability to assess their own condition 1, 2.
Discharge Criteria
- The British Medical Journal suggests that patients can be discharged when they have been on high-dose medication for 24 hours, have a PEF >75% of predicted or personal best with diurnal variability <25%, have verified and documented inhaler technique, and are on treatment with oral and inhaled corticosteroids and bronchodilators, with a written self-management plan and follow-up appointments 1, 2.
Pediatric Considerations
- For children under 12 years, the British Medical Journal recommends considering severity characteristics such as excessive dyspnea, respiratory rate >50/min, pulse >140/min, and PEF <50% of predicted (if applicable), with pediatric doses of prednisolone 1-2 mg/kg/day (maximum 40 mg) and salbutamol nebulized, with half doses in very small children 2.
Common Errors to Avoid
- The British Thoracic Society warns against administering sedatives during an asthma exacerbation, underestimating severity, delaying systemic corticosteroid administration, and relying solely on bronchodilators without anti-inflammatory treatment 1, 2.