Fracture risks for women in long-term care: high prevalence of calcaneal osteoporosis and hypovitaminosis D.
Abstract
STUDY OBJECTIVES: To determine the prevalence of osteoporosis as assessed by peripheral bone mineral density (BMD) in women living in a nursing home, to determine how many women with low BMD had received a diagnosis of osteoporosis, to assess the prevalence of vitamin D deficiency, and to seek reasons for vitamin D deficiency.
DESIGN: Measurement of calcaneal BMD and serum 25-hydroxyvitamin D.
SETTING: Skilled nursing facility.
PATIENTS: Forty-nine women aged 68-100 years.
MEASUREMENTS AND MAIN RESULTS: Bilateral calcaneal BMD was measured by dual-energy x-ray absorptiometry and serum 25-hydroxyvitamin D by radioimmunoassay. Medical records were reviewed to assess osteoporosis risk factors, previous documentation of osteoporosis or malabsorption, and supplemental vitamin D intake. Fifty-nine percent of the 39 women with calcaneal BMD measurements (95% confidence interval [CI] 44-74%) exhibited calcaneal osteoporosis (T score < -2.5). Sixty percent (95% CI 46-74%) had 25-hydroxyvitamin D levels of 20 ng/ml or less, which is associated with secondary hyperparathyroidism; only 4% of women had levels above 30 ng/ml, recently recommended as optimal. Vitamin D status was suboptimal even in most women taking multivitamins. Osteoporosis was documented in the records of 17% of 23 women with calcaneal osteoporosis.
CONCLUSION: Osteoporosis was prevalent but poorly documented in women living in the nursing home. Peripheral BMD measurements have the potential to improve the recognition…
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