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    Vitamin d insufficiency in older female community-dwelling acute hospital admissions and the response to supplementation

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    Date
    2006-03-15
    Author
    DeLappe, E
    McGreevy, C
    ni Chadhain, N
    Grimes, H
    O'Brien, T
    Mulkerrin, E
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    Cited 25 times in Scopus (view citations)
    
    Recommended Citation
    DeLappe, E; McGreevy, C; ni Chadhain, N; Grimes, H; O'Brien, T; Mulkerrin, E (2006). Vitamin d insufficiency in older female community-dwelling acute hospital admissions and the response to supplementation. European Journal of Clinical Nutrition 60 (8), 1009-1015
    Published Version
    http://www.nature.com/ejcn/journal/v60/n8/pdf/1602412a.pdf
    Abstract
    Objectives: A significant proportion of the older population may exhibit vitamin D insufficiency. We sought to establish the proportion of 25-hydroxyvitamin D (25OHD) insufficient individuals in an older female cohort presenting for acute medical admission and how they responded to supplementation. Design: A prospective cohort study. Setting: Hospital admissions followed up as a population-based study. Subjects: A total of 114 consecutive female acute medical admissions aged over 65 years from November 2003 to January 2004 were enrolled. All admissions with hypercalcaemia, metabolic bone disease (other than osteoporosis/osteomalacia) and creatinine >= 150 mu mol/l were excluded. Interventions: iPTH, calcium and 25OHD levels were measured in each patient. Of the total, 22 were already receiving calcium and vitamin D supplementation at enrolment. The remaining 92 were commenced on 800 IU of vitamin D and 1 g calcium, and levels were reassessed after supplementation for 3 months. Results: 25-Hydroxyvitamin D insufficiency, as defined by a 25OHD concentration of < 50 nmol/l, was present in 86 (75.4%) patients at initial assessment (mean 35.8 nmol/l, s.d. 23.3). Secondary hyperparathyroidism was present in only 36.7% of those with 25OHD deficiency at baseline. Of the total, 51 (44.7%) patients presented for follow-up. 25-Hydroxyvitamin D concentration increased in this group from 42.1 nmol/l (s.d. 26.6) to 59.5 nmol/l (s.d. 27.4) after supplementation, P < 0.001, but 18(35.3%) still remained deficient. There was no significant change in iPTH or calcium following supplementation. Assessment of compliance revealed 6 (11.7%) admitted to partial or non-compliance. Conclusions: Insufficiency of 25OHD was very common in this cohort. Despite calcium and vitamin D supplementation, 25OHD concentrations failed to reach normality in a significant proportion. Maintaining vitamin D and calcium intake at the level of current recommended doses may not be sufficient to ensure adequate 25OHD stores.
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    http://hdl.handle.net/10379/9053
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