Asthma Management
Introduction to Inhaled Corticosteroids
- The American Thoracic Society recommends considering the potency and equivalence of different inhaled corticosteroids when selecting a treatment, with the following equivalent daily doses:
| Inhaled Corticosteroid | Equivalent Daily Dose (μg) | |
|---|---|---|
| Beclomethasone dipropionate (QVAR) | 400 | |
| Budesonide DPI (Pulmicort) | 800 | |
| Fluticasone propionate (Flovent/Flixotide) | 200-250 | |
| Mometasone (Asmanex) | 200-220 | |
| Ciclesonide (Alvesco) | 160-320 | |
| Triamcinolone acetonide (Azmacort) | 1000-2000 | |
| Flunisolide (Aerospan) | 1000 | [1] |
Local Effects and Safety
- Oropharyngeal candidiasis is more common with beclomethasone dipropionate than with some other inhaled corticosteroids like triamcinolone acetonide, with a strength of evidence based on clinical studies 1
- High-dose ICS therapy may be associated with systemic effects, including potential adrenal suppression 2
- For patients with severe or refractory asthma, higher doses (>1,260 μg/day) of inhaled corticosteroids may be required, according to the American Journal of Respiratory and Critical Care Medicine 3
Dosing and Administration
- The American Academy of Allergy, Asthma, and Immunology suggests that when switching between inhaled corticosteroids, use the equivalence table to maintain appropriate anti-inflammatory effects, and consider device characteristics and patient technique when selecting an inhaled corticosteroid, with a strength of evidence based on clinical guidelines 3
- For adults with persistent asthma inadequately controlled on other therapies, 400 μg/day of QVAR provides equivalent control to 800 μg/day of budesonide DPI, as part of a strategy to optimize asthma management 4
- For non-specific cough in children with asthma risk factors, guidelines suggest a short (2-4 weeks) trial of 400 mg/day of beclomethasone equivalent, to assess the response to treatment and adjust the management plan accordingly 4
- Available ICS brand names and formulations include:
Mechanism of Action and Efficacy
- ICS reduce airway hyperresponsiveness, inhibit inflammatory cell migration and activation, and block late-phase reactions to allergens 7
- For patients with persistent asthma, ICS are the most consistently effective long-term control medication at all steps of care 7
- ICS improve asthma control more effectively than leukotriene receptor antagonists or any other single long-term control medication 7
- LABAs should never be used as monotherapy for asthma control; they must always be prescribed with an ICS 7