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  • Title: A randomized trial of lower leg and height growth in children with asthma treated with inhaled budesonide from a new dry powder inhaler.
    Author: Gradman J, Wolthers OD.
    Journal: Pediatr Allergy Immunol; 2010 Feb; 21(1 Pt 2):e206-12. PubMed ID: 19298635.
    Abstract:
    Short-term knemometry is a highly sensitive and accurate method for non-invasive assessment of systemic activity of inhaled corticosteroids in children with asthma. However, there are no randomized data available to elucidate the relation between inhaled corticosteroid suppressed short-term lower leg and height growth. The aim of the present study was to assess the relation between short-term lower leg and 1-yr height growth in children with asthma treated with inhaled budesonide from the new Pulairmax inhaler 200 μg once daily in the morning or montelukast 5 mg once daily. A total of 52 pre-pubertal children with asthma were included in a randomized open-label parallel group study. Length of the lower leg and height were measured by knemometry and stadiometry, respectively, at study entry and after 2, 4, 12, 20, 28, 36, 44 and 52 wks. Lower leg and height growth rates were significantly lower in the budesonide than in the montelukast group (p < 0.0001). Mean 2-wks lower leg growth rate was 0.17 mm/wk in the budesonide and 0.39 mm/wk in the montelukast treated children (p = 0.02). Mean 1-yr height growth rate was 5.51 cm/yr in the budesonide and 6.51 cm/yr in the montelukast group [95% CI: (0.20; 1.79)]. There was a strong linear correlation between lower leg and height growth in both groups, rho = 0.96 (budesonide) and 0.98 (montelukast). In conclusion, 1-yr height growth suppression of budesonide 200 μg administered via the Pulairmax inhaler once daily in the morning was indicated from suppressed short-term lower leg growth providing evidence that short-term knemometry is able to predict 1-yr height growth suppression of inhaled corticosteroids. Short-term knemometry should be performed as part of the safety assessments of new inhaled corticosteroids and inhalation devices in children with asthma before long-term height growth evaluations are initiated.
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