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Year : 2019  |  Volume : 32  |  Issue : 2  |  Page : 61-67

Vitamin D supplementation for acute bronchiolitis: a double-blind randomized controlled trial

1 Department of Pediatrics, Faculty of Medicine, Mansoura University, Mansoura, Egypt
2 Department of Clinical Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt

Correspondence Address:
MD Amal M Osman
Department of Pediatrics, Faculty of Medicine, Mansoura University, Mansoura 35516
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/AJOP.AJOP_28_19

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Background Vitamin D deficiency has been declared as a risk factor for acute bronchiolitis. Objective The aim was to delineate the therapeutic effect of vitamin D supplementation on the clinical course of acute bronchiolitis and to investigate the relationship between vitamin D status and the severity of acute bronchiolitis. Materials and methods A randomized double-blind controlled trial was conducted including 60 infants who required hospital-based care for acute bronchiolitis. The included infants were randomly assigned to either vitamin D3 treatment (100 IU/kg/day) (vitamin D group) or placebo (placebo group) all through the period of admission. The primary outcome was the length of hospital stay in days, and the secondary outcome measures were as follows: time to resolution of tachypnea, chest retractions, hypoxia, inability to feed/lethargy, and any adverse events. Modified Tal score was used for severity assessment. Basal serum vitamin D level was evaluated in all patients before enrollment in the randomized trial. Results The vitamin D group had significantly shorter length of hospital stay, rapid resolution of signs of respiratory distress, and shorter need for oxygen therapy. Further, patients with severe disease showed significant low basal serum vitamin D level compared with milder cases. Moreover, patients with exclusive breastfeeding and those with daily outdoor exposure for less than 1 h were found to have significantly lower serum vitamin D. Conclusion Vitamin D supplementation at a dose of 100 IU/kg/day could have a significant beneficial effect in infants with acute bronchiolitis.

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