1. Severe vitamin D deficiency is associated with frequent exacerbations and hospitalization in COPD patients.
- Author
-
Malinovschi A, Masoero M, Bellocchia M, Ciuffreda A, Solidoro P, Mattei A, Mercante L, Heffler E, Rolla G, and Bucca C
- Subjects
- Aged, Biomarkers blood, Disease Progression, Female, Forced Expiratory Volume, Humans, Linear Models, Logistic Models, Male, Middle Aged, Multivariate Analysis, Odds Ratio, Pulmonary Disease, Chronic Obstructive diagnosis, Pulmonary Disease, Chronic Obstructive physiopathology, Retrospective Studies, Risk Factors, Severity of Illness Index, Time Factors, Vitamin D analogs & derivatives, Vitamin D blood, Vitamin D Deficiency blood, Vitamin D Deficiency diagnosis, Hospitalization, Lung physiopathology, Pulmonary Disease, Chronic Obstructive complications, Vitamin D Deficiency complications
- Abstract
Background: Acute exacerbations of COPD (AECOPD) are common and strongly influence disease severity and relative healthcare costs. Vitamin D deficiency is frequent among COPD patients and its contributory role in disease exacerbations is widely debated. Our aim was to assess the relationship of serum vitamin D levels with COPD severity and AECOPD., Methods: Serum vitamin D (25-hydroxyvitamin D) levels were measured in 97 COPD patients and related to lung function, comorbidities, FEV1 decline, AECOPD and hospital admission during the previous year., Results: Most patients (96%) had vitamin D deficiency, which was severe in 35 (36%). No significant relationship was found between vitamin D and FEV1 or annual FEV1 decline. No difference between patients with and without severe vitamin D deficiency was found in age, gender, BMI, smoking history, lung function, and comorbidities, apart from osteoporosis (60.9% in severe deficiency vs 22.7%, p = 0.001). In multiple logistic regression models, severe deficiency was independently associated with AECOPD [adjusted odds ratios (aOR) of 30.5 (95% CI 5.55, 168), p < 0.001] and hospitalization [aOR 3.83 (95% CI 1.29, 11.4), p = 0.02]. The odds ratio of being a frequent exacerbator if having severe vitamin D deficiency was 18.1 (95% CI 4.98, 65.8) (p < 0.001), while that of hospitalization was 4.57 (95% CI 1.83, 11.4) (p = 0.001)., Conclusions: In COPD patients severe vitamin D deficiency was related to more frequent disease exacerbations and hospitalization during the year previous to the measurement of vitamin D. This association was independent of patients' characteristics and comorbidities.
- Published
- 2014
- Full Text
- View/download PDF