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  • Title: Predictors of symptom recurrence after low-dose inhaled corticosteroid cessation in mild persistent asthma.
    Author: Tonelli M, Bacci E, Dente FL, Bartoli ML, Cianchetti S, Di Franco A, Vagaggini B, Zingoni M, Paggiaro PL.
    Journal: Respir Med; 2006 Apr; 100(4):622-9. PubMed ID: 16253493.
    Abstract:
    In order to identify predictors of recurrence of asthma symptoms after withdrawal of therapy in mild persistent asthmatics, asymptomatic on low-dose inhaled corticosteroids (ICS), we studied 87 asthmatic patients regularly treated with ICS for at least 6 months. At the enrollment visit (T1), 71 on ICS were asymptomatic over the past 3 months and discontinued asthma treatment. Symptoms and PEF were then monitored for up to 3 months or until symptoms recurred (T2). At T1 and T2, all subjects underwent methacholine challenge and sputum induction. Thirty nine out of 71 patients experienced symptom recurrence. At T1, clinical and functional data and sputum eosinophilia between patients with or without recurrence of symptoms were similar. Age > 40 yr, and disease duration > 5 yr were significantly associated with recurrence of asthma symptoms, while the presence of allergic rhinitis, low baseline FEV(1) and untreated time span > 60 months showed a trend to be associated with symptoms recurrence. At T2, symptoms, pulmonary function, bronchial hyperresponsiveness and sputum eosinophilia deteriorated in patients with symptom recurrence but not in patients without symptom recurrence. In conclusion, age and asthma duration were the best predictors of symptom recurrence in mild persistent asthmatics who withdrew pharmacological therapy, as recommended in the step-down of international guidelines.
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