Abstract:
UNLABELLED:SUMMARY RATIONALE: Asthma therapy should be stepped up or stepped down in response to changes in asthma control. However, there is little evidence available on the optimal timing, sequence, and degree of medication reductions. In this study we analyzed clinically stable asthmatic children who underwent a medication reduction from a combination preparation consisting of an inhaled corticosteroid (ICS) and long acting beta2-agonist (LABA) to monotherapy with the same dose of the ICS. We hypothesized that the extent of exercise-induced bronchoconstriction (EIB) would not increase after the cessation of the LABA. METHODS:Nineteen children, aged 8-16 years, with clinically stable asthma, receiving LABA/ICS combination therapy, were analyzed in this open-label pilot study. Children performed an exercise challenge at baseline and 3 weeks after the medication reduction. Best values of spirometric measurements of the forced expiratory volume in 1 sec (FEV(1)) were used for statistical calculations. RESULTS:Maximum percent fall in FEV(1) was significantly lower after 3 weeks of ICS monotherapy (P = 0.03). Eight of 19 children had a >or=15% fall in FEV(1) after exercise at the initial exercise challenge. In this subgroup, maximum percent fall in FEV(1) after the medication reduction was significantly lower (P < 0.01), and in six children it decreased to <15%, indicating they no longer had EIB. CONCLUSION:In clinically stable asthmatic children on LABA/ICS combination therapy, the cessation of the LABA can reduce and in most cases abolish EIB.
journal_name
Pediatr Pulmonoljournal_title
Pediatric pulmonologyauthors
Kersten ET,Driessen JM,van Leeuwen JC,Thio BJdoi
10.1002/ppul.21278subject
Has Abstractpub_date
2010-09-01 00:00:00pages
927-33issue
9eissn
8755-6863issn
1099-0496journal_volume
45pub_type
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