A randomised controlled trial of small particle inhaled steroids in refractory eosinophilic asthma (SPIRA).
Thorax
; 70(6): 559-65, 2015 Jun.
Article
em En
| MEDLINE
| ID: mdl-25858909
ABSTRACT
BACKGROUND:
Some patients with refractory asthma have evidence of uncontrolled eosinophilic inflammation in the distal airways. While traditional formulations of inhaled steroids settle predominantly in the large airways, newer formulations with an extra-fine particle size have a more peripheral pattern of deposition. Specifically treating distal airway inflammation may improve asthma control.METHODS:
30 patients with refractory asthma despite high dose inhaled corticosteroids were identified as having persistent airway eosinophilia. Following 2â weeks of prednisolone 30â mg, patients demonstrating an improvement in asthma control were randomised to receive either ciclesonide 320â µg twice daily or placebo in addition to usual maintenance therapy for 8â weeks. The primary outcome measure was sputum eosinophil count at week 8. Alveolar nitric oxide was measured as a marker of distal airway inflammation.RESULTS:
There was continued suppression of differential sputum eosinophil counts with ciclesonide (median 2.3%) but not placebo (median 4.5%) though the between-group difference was not significant. When patients who had changed their maintenance prednisolone dose during the trial were excluded the difference between groups was significant (1.4% vs 4.5%, p=0.028). Though alveolar nitric oxide decreased with ciclesonide the value did not reach statistical significance.CONCLUSIONS:
These data demonstrate that patients with ongoing eosinophilic inflammation are not truly refractory, and that suppression of airway eosinophilia may be maintained with additional inhaled corticosteroid. Further work is needed with a focus on patient-orientated outcome measures such as exacerbation rate, with additional tests of small airway function. TRIAL REGISTRATION NUMBER NCT01171365. Protocol available at http//www.clinicaltrials.gov.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
1_ASSA2030
/
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Pregnenodionas
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Eosinofilia Pulmonar
/
Qualidade de Vida
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Asma
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Prednisona
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Glucocorticoides
Tipo de estudo:
Clinical_trials
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Diagnostic_studies
/
Guideline
/
Prognostic_studies
Aspecto:
Patient_preference
Limite:
Adult
/
Aged
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Thorax
Ano de publicação:
2015
Tipo de documento:
Article