Follow-up of Asthma
All asthma patients require structured follow-up with their primary care physician within 1 week of any acute exacerbation or hospital discharge, followed by specialist respiratory review within 4 weeks, with routine monitoring every 1-6 months depending on severity. 1, 2, 3
Immediate Post-Discharge Requirements
Before any patient leaves the hospital or emergency department, several non-negotiable criteria must be met to prevent relapse and readmission:
- Patients must be clinically stable on discharge medications for at least 24 hours before leaving the hospital 1, 2, 3
- Peak expiratory flow (PEF) must exceed 75% of predicted or personal best value with diurnal variability less than 25% 1, 2
- Inhaler technique must be directly observed, verified, and documented in the medical record 1, 2, 3
- Every patient must receive their own peak flow meter with demonstrated ability to use it correctly 1, 2
- A written self-management action plan is mandatory, specifying exact PEF values at which to increase treatment, call their doctor, or return to hospital 1, 2, 3
The British Thoracic Society emphasizes that failure to provide these elements—particularly the written action plan—is the single most preventable cause of readmission. 2
Mandatory Medication Adjustments at Discharge
Discharge medications must be optimized to prevent recurrence:
- Oral corticosteroids (prednisolone 30-60 mg daily for adults, 1-2 mg/kg for children with maximum 40 mg) for 1-3 weeks or longer in chronic cases 1, 2
- Inhaled corticosteroids at a higher dose than pre-admission levels, started at least 48 hours before discharge 1, 2
- Nebulizers must be replaced by standard inhaler devices with spacers 24-48 hours before discharge unless home nebulizer therapy is specifically indicated 1, 2
- Short-acting β-agonists (albuterol/salbutamol) for rescue use only, not as monotherapy 4, 5
A critical pitfall: prednisolone must never be stopped or tapered if asthma symptoms are worsening. 1
Structured Follow-Up Schedule
Acute Exacerbation Follow-Up
After any emergency department visit or hospitalization:
- Primary care visit within 1 week to assess recovery, verify medication adherence, recheck inhaler technique, and adjust therapy 1, 2, 3
- Respiratory specialist appointment within 4 weeks to step up maintenance therapy and investigate precipitating factors 1, 2, 3
- For home-treated acute exacerbations, surgery review within 48 hours with objective confirmation of improvement before the physician leaves 1
Routine Maintenance Follow-Up
For stable chronic asthma:
- Every 1-6 months depending on severity: mild intermittent asthma can be seen every 6 months, while severe persistent asthma requires monthly to quarterly visits 1, 6
- Spirometry at initial assessment, then every 1-2 years after symptoms and peak flow stabilize 1
- Research evidence suggests that patients with moderate persistent asthma on stable inhaled corticosteroids do not require routine visits more frequently than every 6 months 7
At each visit, the physician must:
- Review medication use and adherence 1
- Observe actual inhaler technique 1, 2
- Review and update the written self-management plan 1, 2
- Assess PEF readings and symptom patterns 1, 6
- Classify current severity and adjust therapy accordingly 1
Essential Components of the Self-Management Plan
The written action plan must specify:
- Baseline daily medications with exact doses and frequency 2, 3, 6
- Early warning signs (increased nocturnal symptoms, increased rescue inhaler use, declining PEF) 2, 3
- Specific PEF thresholds for action: when to increase inhaled corticosteroids, when to start oral corticosteroids, when to call the physician, when to go directly to the emergency department 1, 2
- Instructions for acute exacerbations, including doubling inhaled corticosteroid dose and starting prednisolone 30-60 mg daily 6
Studies demonstrate that education, regular follow-up, and action plans significantly improve asthma control and quality of life, though peak flow monitoring versus symptom-based plans show equivalent outcomes when both include structured education. 8
Investigating Precipitating Factors
At follow-up visits, systematically evaluate:
- Was there an avoidable precipitating cause? (viral infection, allergen exposure, medication non-adherence) 1
- Did the patient recognize worsening asthma and respond appropriately? 1
- Was inhaler technique adequate? Poor technique is a major cause of treatment failure 2, 3
- Allergy testing for perennial indoor allergens (dust mites, cockroach, cat/dog dander) in patients with persistent asthma requiring daily medications 1
- Evaluate for comorbidities: allergic rhinitis, sinusitis, gastroesophageal reflux, medication sensitivities 1
Criteria for Specialist Referral
Refer to a respiratory specialist when:
- Single life-threatening asthma exacerbation (silent chest, cyanosis, confusion, PEF <33% predicted) 1
- Asthma not responding to current therapy after appropriate medication adjustments 1
- Frequent exacerbations requiring oral corticosteroids or emergency visits 1
- Diagnostic uncertainty or need for specialized testing 1
Preventive Measures
- Annual influenza vaccination for all patients with persistent asthma 1
- Pneumococcal vaccination (23-valent polysaccharide vaccine) for adults with asthma at any age, as asthma is a high-risk condition 2
- Allergen-specific mitigation strategies only in patients with documented sensitivity and relevant symptoms, using multiple coordinated interventions 1, 9
Critical Pitfalls to Avoid
- Discharging before 24 hours on medications significantly increases relapse risk 2
- Failing to increase inhaled corticosteroid dose above pre-admission levels leads to treatment failure 2
- Not providing a written self-management plan is the most preventable cause of readmission 2
- Delaying follow-up beyond one week after acute exacerbation misses the window to identify patients at risk for recurrence 3
- Overreliance on bronchodilators without anti-inflammatory therapy increases mortality risk 4
- Verbal instructions alone are insufficient—written plans are essential 3