Management of Post-Infectious Asthma Exacerbation with Persistent Symptoms
This child requires immediate intensification of asthma therapy with a short course of oral prednisolone (1-2 mg/kg daily for 3-5 days, maximum 40 mg) combined with increased frequency of bronchodilator therapy, given the worsening shortness of breath and presence of inspiratory wheeze indicating ongoing airway inflammation despite completing antibiotics. 1
Immediate Assessment and Treatment Plan
Current Clinical Status
The child demonstrates ongoing asthma exacerbation evidenced by:
Reassuring features include:
Primary Treatment Approach
Initiate oral corticosteroids immediately - this is the critical intervention that addresses the underlying airway inflammation driving persistent symptoms. 1, 3
- Prednisolone 1-2 mg/kg once daily (maximum 40 mg) for 3-5 days 2, 1
- Early corticosteroid administration speeds resolution of airflow obstruction and reduces relapse rates 3
- The presence of wheeze and worsening dyspnea post-infection indicates ongoing inflammation requiring systemic steroids, not just bronchodilator therapy 1, 3
Optimize bronchodilator therapy:
- Increase Ventolin (salbutamol) frequency to 4-8 puffs via MDI with spacer every 4-6 hours while symptomatic 1, 3
- Continue Flixotide (fluticasone) at current dose - do not discontinue inhaled corticosteroids 2
- Consider temporarily increasing inhaled corticosteroid dose during recovery period 2
Role of Antibiotics
Do not prescribe additional antibiotics - the completed 5-day amoxicillin course was appropriate for the initial lower respiratory tract infection, but persistent symptoms now represent post-infectious bronchial hyperreactivity and asthma exacerbation, not ongoing bacterial infection. 2, 4
- Antibiotics should only be given if bacterial infection is confirmed with clear signs/symptoms 2, 1
- Current presentation (resolved sore throat, no fever, good air entry bilaterally, normal vital signs) does not suggest bacterial pneumonia 2, 4
- Cochrane review evidence shows antibiotics provide no benefit for asthma exacerbations without confirmed bacterial infection 4, 5
Monitoring and Follow-Up Protocol
Structured reassessment is mandatory:
- Review within 48 hours to assess response to oral steroids 2
- Monitor for improvement in dyspnea with activity and reduction in cough 1, 3
- Check inhaler technique for both Flixotide and Ventolin 2
- Provide written asthma action plan if not already in place 2, 1
Criteria requiring urgent reassessment or hospital admission:
- Worsening dyspnea at rest 1, 3
- Inability to complete sentences 2
- Pulse >110 bpm or respiratory rate >25/min 2
- SpO2 <92% 1, 3
- Exhaustion, drowsiness, or confusion 1
Common Pitfalls to Avoid
Do not delay systemic corticosteroids - the most critical error in asthma management is underuse of corticosteroids in exacerbations. 2 This child has clear evidence of ongoing airway inflammation (wheeze, worsening dyspnea) that will not resolve with bronchodilators alone.
Do not prescribe antibiotics for post-viral bronchial hyperreactivity - viral respiratory infections commonly trigger asthma exacerbations, and symptoms can persist for weeks after the infection resolves. 1, 4 Additional antibiotics will not help and may cause unnecessary side effects.
Do not assume current controller therapy is adequate - after this exacerbation resolves, reassess whether the child needs step-up in maintenance therapy (e.g., higher dose inhaled corticosteroid or addition of leukotriene receptor antagonist). 2, 1
Long-Term Management Considerations
Post-exacerbation follow-up within 1-4 weeks to review:
- Asthma control and need for maintenance therapy adjustment 2
- Inhaler technique verification 2
- Written asthma action plan education 2, 1
- Peak flow meter provision if age-appropriate 2
Consider stepping up maintenance therapy if this represents frequent exacerbations or poor baseline control - options include increasing Flixotide dose or adding leukotriene receptor antagonist (montelukast). 2