AI Article Synopsis
- * Out of 75 children, only 9.4% had adequate vitamin D levels, and higher levels were correlated with better lung function and asthma control.
- * The findings suggest that low vitamin D is common in asthmatic children and is associated with poorer asthma management in a Mediterranean context.
Article Abstract
Objective: To establish the relationship between vitamin D serum levels, pulmonary function, and asthma control in children.
Study Design: We studied the relationship between 25-hydroxy cholecalciferol [25(OH)D] concentrations and baseline spirometry and levels of asthma control, assessed according to Global Initiative for Asthma guidelines and the Childhood Asthma Control Test, in 75 children with asthma (age range 5-11 years; 43 males) in a cross-sectional study carried out during the winter and early spring.
Results: Only 9.4% of our children had a sufficient serum 25(OH)D (at least 30 to 40 ng/mL). A significant positive correlation was found between forced vital capacity percent predicted and serum 25(OH)D (r = 0.25, P = .040). This was true also for forced expiratory volume in 1 second, even though it was not statistically significant (r = 0.16, P = .157). Subjects with well-controlled asthma had higher serum levels of 25(OH)D than children with partially controlled or non-controlled asthma, with values of (median [Q1; Q3]) 22.2 (16.3; 25.4), 17.8 (11.8; 22.1) and 18.1 (15.0; 18.5), respectively (P = .023). Furthermore, a positive correlation was found between 25(OH)D and the Childhood Asthma Control Test (r = 0.28; P = .011).
Conclusions: Our results indicate that hypovitaminosis D is frequent in children with asthma living in a Mediterranean country. In those children, lower levels of vitamin D are associated with reduced asthma control.
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| http://dx.doi.org/10.1016/j.jpeds.2010.08.043 | DOI Listing |
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