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24.11.2021 | original article

Impact of rapid correction of vitamin D deficiency in asthmatic patients

Zeitschrift:
Wiener klinische Wochenschrift
Autoren:
PharmD Dr. Ariandokht Einisadr, Ph.D. Dr. Mehdi Rajabi, M.D. Dr. Hamidreza Moezzi, M.D. Ph.D. Dr. Hooman Bakhshandeh
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Summary

Background

Asthma is one of the most common chronic diseases, which is a growing public health concern worldwide. In recent years, there has been an increasing number of interests in the relationship between vitamin D level and asthma control. Hence, the objective of this study was to assess the effect of high doses of vitamin D3 injection on asthmatic patient’s respiratory condition and quality of life.

Methods

This was a single arm, before and after interventional study involving 18 patients with moderate to severe asthma. Spirometry test, St George’s respiratory questionnaire (SGRQ) and serum vitamin D assay were performed. Subjects with 25-hydroxyvitamin D3 (25-(OH) D3) < 20 ng/ml were deemed deficient (n = 18) and received 2 intramuscular injections of vitamin D3 300,000 IU at monthly intervals consecutively.

Results

The mean changes of forced expiratory volume in the first second (FEV1) were significantly different in subjects who received vitamin D3 injections (p = 0.008). Also, the mean changes in FEV1/forced vital capacity ratio (FEV1/FVC) were significant (p < 0.001) as well as maximum expiratory flow between 25% and 75% of FVC (MEF25-75) (p = 0.001). Interestingly, improvement in clinical parameters of SGRQ was also observed with significant differences in total score (p = 0.001). Naturally, serum vitamin D levels were increased in our patients following the injections (p < 0.001).

Conclusions

Our findings suggest that screening for serum 25-(OH) D3 deficiency is important in asthmatic patients and correction of this deficiency with high doses of vitamin D3 injection may lead to improvement in pulmonary function, symptoms and quality of life (QOL).

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