PAEDIATRICS,  RESPIRATORY,  RESPIRATORY PEADS

Asthma – adolescents (12 years and over)

Key Points – from RCH and Asthma guidelines 2.0

  • ICS Inclusion: All adolescents with asthma should be on a treatment regimen that includes an inhaled corticosteroid (ICS). Prescribing short-acting β-agonist (SABA) alone is no longer recommended due to the increased risk of severe exacerbations and death.
  • Combination Therapy: For most adolescents, treatment can be started with an as-needed (reliever) combination of an ICS and a long-acting β-agonist (LABA).
  • Stable Regimens: Adolescents well controlled on traditional treatment with SABA and inhaled ICS should not be changed without consulting the adolescent’s care team or a senior clinician.
  • Treatment Adjustment: Treatment can be stepped up or down according to response. ICS should never be completely discontinued.
  • Inhaler Technique: Always check inhaler technique, compliance, and contributing factors before making any dose adjustments.

Background

  • Medications and Delivery Devices:
    • Inhaled Corticosteroid (ICS): Reduces inflammation in the airways.
    • Short-acting β-agonist (SABA): Provides quick relief by relaxing the muscles around the airways.
    • Long-acting β-agonist (LABA): Provides prolonged bronchodilation, reducing asthma symptoms and exacerbations.
    • Metered Dose Inhaler (MDI): Delivers a specific amount of medication to the lungs in aerosol form.
    • Dry Powder Inhaler (DPI), including the Turbuhaler®: Delivers medication in powder form, requiring adequate inhalation technique.
  • Risks of SABA Alone: High use of SABA alone (>3 MDI canisters per year) and low use of ICS is associated with more severe asthma exacerbations and death.
  • Combination Therapy (ICS/LABA): Ensures use of anti-inflammatory with every reliever dose (anti-inflammatory reliever-based regimen). Currently, budesonide/formoterol is the only combination prescribed as a reliever.
  • Traditional Management: Daily ICS as a preventer and SABA as needed is effective and may be preferred for those already on a working regimen or with difficulties using DPI/Turbuhaler®.
  • Environmental Impact: MDI has a larger carbon footprint. Achieving good asthma control to reduce SABA need or switching to DPI can help reduce environmental impact.

Assessment

  • History:
    • Daytime Symptoms: Frequency and severity.
    • Need for Reliever: Number of doses per week.
    • Limitation of Activities: Impact on daily life.
    • Night or Morning Symptoms: Frequency and severity of symptoms at night or on waking.
  • Examination:
    • Inhaler Technique: Ensure correct usage of inhalers.
    • Comorbidities: Look for signs of allergic rhinitis and eczema.

Management

  • Investigations:
    • Most adolescents can be diagnosed clinically based on symptoms and response to treatment.
    • Investigations are necessary if other diagnoses are considered or if treatment needs to be stepped up beyond Step 3.
    • Spirometry should be performed in an accredited respiratory function laboratory, including bronchodilator response and possibly exercise or challenge tests.
  • Initiating Treatment:
    • Anti-inflammatory reliever-based regimen (budesonide/formoterol 200 mcg/6 mcg) can be started following an acute presentation or routine review.
    • If the adolescent is already on a traditional regimen, discuss changes with their long-term care provider.

Stepping Up or Down According to Response

  • Symptom Control Indicators:
Control LevelDaytime SymptomsNeed for RelieverLimitation to ActivityNighttime Symptoms
Good Control≤2 days per week≤2 days per weekNoneNone
Partial Control>2 days per week>2 days per weekPresentPresent
Poor Control>2 days per week>2 days per weekPresentPresent
  • Action Based on Control:
    • Good Control: Maintain current treatment. If good control is sustained for approximately 3 months, consider stepping down preventer treatment.
    • Partial Control: Review adherence and technique, then consider stepping up treatment.
    • Poor Control: Step up preventer medication and reassess. Ensure correct technique and adherence. Consider alternative diagnoses if control remains poor.
    • Severe Exacerbations: Review and step up treatment if a severe exacerbation occurs.

Additional Treatment Considerations

  • For Severe, Uncontrolled Asthma (Step 3 and Beyond):
    • Referral: Refer to a respiratory physician or specialist asthma service for further evaluation and management.
    • Additional Treatments:
      • Oral Prednisolone: 1 mg/kg (max 50 mg) daily for 2 weeks.
      • Tiotropium: 2.5 mcg 2 puffs daily.
      • Montelukast: 5 mg daily.

Inhaled Corticosteroids (ICS)

  • Common ICS and Starting Doses:
    • Fluticasone: Start at 125 mcg twice daily, can increase up to a total daily dose of 500 mcg.
    • Ciclesonide: Start at 80 mcg once daily, can increase up to 320 mcg as required.

Anti-inflammatory Reliever-based Asthma Action Plan

  • Written Action Plan: A core part of asthma management, detailing steps to take in case of worsening symptoms.
  • Indicators for Seeking Medical Attention:
    • DPI: Total of 12 actuations of budesonide/formoterol in a day.
    • MDI: Total of 24 inhalations of budesonide/formoterol in a day.

Management in Hospital

  • For Exacerbations:
    • Treat with SABA as per standard practice (see acute asthma guidelines).
    • Use SABA at home while waiting for ambulance if needed.
    • On discharge, resume budesonide/formoterol for symptom relief.

Approach to Asthma Not Responding to Treatment

  • Review the Following:
    • Correct asthma diagnosis.
    • Adherence to treatment.
    • Inhaler technique.
    • Contributing factors like
      • allergic rhinitis
      • obesity
      • obstructive sleep apnea
      • gastro-oesophageal reflux
      • dysfunctional breathing
      • depression/anxiety
      • smoking/vaping
      • environmental factors.
    • Socioeconomic factors affecting access to healthcare.
      • Poor adherence to treatment
      • Denying or disregarding asthma symptoms
      • Avoiding regular review appointments
      • Life events (new school, moving house, family disruption, absent parent)
      • Family problems (e.g. family conflict, family dysfunctions
      • Psychological distress (e.g. feelings of hopelessness, bereavement or recent loss)
      • Mental health problems (e.g. depression, emerging mood disorders
      • Risky use of alcohol/other substances
      • Communication problems
  • Consultation:
    • Consult respiratory/specialist asthma services if asthma control remains inadequate at Step 3 or if diagnosis is unclear.

Conditions that Confuse with Asthma

Conditions Characterised by Cough

  • Pertussis (whooping cough)
  • Gastro-oesophageal reflux
  • Rhinosinusitis/upper airway cough syndrome
  • Adverse effect of medicines (e.g. ACE inhibitors)
  • Bronchiectasis
  • Chronic obstructive pulmonary disease (COPD)
  • Pulmonary fibrosis
  • Large airway stenosis
  • Habit-cough syndrome
  • Inhaled foreign body

Conditions Characterised by Wheezing

  • Respiratory infections
  • Chronic obstructive pulmonary disease (COPD)
  • Upper airway dysfunction

Conditions Characterised by Difficulty Breathing

  • Breathlessness on exertion due to poor cardiopulmonary fitness
  • Hyperventilation
  • Anxiety
  • Chronic heart failure
  • Pulmonary hypertension
  • Lung cancer

Additional Resources

  • Green Prescribing: Strategies to reduce the environmental impact of asthma treatments.
  • Educational Materials: Information on inhaler techniques, asthma action plans, and environmental control measures.

Stepping Down in Adulthood for Asthma Management

Main Aim

  • Achieve good asthma control and minimize risks with the lowest effective dose of preventer medicines.

When to Consider Stepping Down

  • Consider stepping down when the patient has experienced good asthma control for 2-3 months and is at low risk of flare-ups.

General Tips

  • Confirm the patient’s actual treatment regimen before stepping down.
  • Address concerns about inhaled corticosteroids and propose a lower dose with an action plan for flare-ups.
  • Plan steps down before the patient finishes their current inhaler to resume the previous dose if control deteriorates.
  • Advise patients to step back up if asthma worsens, based on agreed criteria.
  • Monitor peak flow for 2 weeks before and 3-4 weeks after dose reduction to detect early deterioration.

Stepping Down Inhaled Corticosteroid Dose

  • Gradually reduce the dose for patients with well-controlled asthma on ICS/LABA combinations or ICS alone.
  • Reduce dose by stepping down through available formulations.
  • Note: Fluticasone furoate/vilanterol combinations contain moderate-to-high doses (100/25 mcg and 200/25 mcg).

Ceasing Inhaled Corticosteroid

  • Patients stopping regular low-dose ICS have an increased risk of flare-ups.
  • Stopping treatment may be necessary to confirm asthma diagnosis; close monitoring is needed.

Ceasing Long-acting Beta2 Agonist

  • Patients well controlled on ICS/LABA can continue the regimen long-term, reducing dose through available formulations.
  • Switching from ICS/LABA to ICS alone can lead to deterioration; advise patients to restart combination inhaler if asthma worsens after switching.
  • For fluticasone furoate/vilanterol, step down by switching to a lower dose ICS/LABA combination or ICS alone, with clear written instructions to avoid confusion.

Additional Considerations

  • Some patients may prefer to stay on high doses; monitor peak flow closely.
  • Ensure patients understand the changes and provide written instructions for new inhaler devices and dosing frequencies.

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