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  • Title: Dual energy X-ray absorptiometry outcomes in male COPD patients after treatment with different glucocorticoid regimens.
    Author: Dubois EF, Röder E, Dekhuijzen PN, Zwinderman AE, Schweitzer DH.
    Journal: Chest; 2002 May; 121(5):1456-63. PubMed ID: 12006428.
    Abstract:
    STUDY OBJECTIVES: To compare bone mineral density (BMD) outcomes of patients who received continuous oral systemic glucocorticoids (GCs) with BMD outcomes of patients who received multiple GC courses, oral or IV. DESIGN: Cross-sectional study. PARTICIPANTS: Eighty-six white men with COPD selected from the outpatient clinic for pulmonary diseases. INTERVENTION: Data analysis from medical records, bone densitometry, and pulmonary function tests of consecutive selected patients. Inclusion period into the study was exactly 1 year. MEASUREMENTS AND RESULTS: Ten patients received oral prednisolone daily (group 1). Eleven patients were treated for several exacerbations with multiple systemic prednisolone courses, up to a period of 2 weeks per course, with a cumulative dose of > or = 1,000 mg (group 2). Likewise, 28 patients were treated with multiple systemic prednisolone courses, but with a cumulative dose < 1,000 mg (group 3). Thirty-seven patients were never treated with systemic prednisolone, and partly with inhaled corticosteroids (ICS) [group 4]. All groups were balanced for age and pack-years of smoking. In group 2, body mass index (BMI) and FEV(1) were lowest and hyperinflation was highest. The cumulative systemic prednisolone dose was highest in group 1, irrespective of the additional ICS treatments. Dual energy x-ray absorptiometry scanning of the lumbar spine, total hip, and femoral neck regions revealed a T score < or = 2.5 SD in 27 patients (31%), 31 patients (36%), and 34 patients (40%), respectively. BMD outcomes at any site were lower in patients receiving multiple systemic prednisolone courses > 1,000 mg, cumulatively (group 2), compared to the other groups, and these values were (mean +/- 1 SD) 0.759 +/- 0.238 g/cm(2), 0.683 +/- 0.115 g/cm(2), and 0.686 +/- 0.125 g/cm(2), respectively (p < 0.0001). Multivariate regression analysis revealed a correlation between the cumulative dose of prednisolone in group 2 and BMD of the lumbar spine (adjusted r = 0.48; p < 0.01). At the total hip and femoral neck regions, only a correlation between BMI and BMD was observed (adjusted r = 0.65 and 0.58, respectively; p < 0.0001 for both sites). CONCLUSIONS: Despite a far lower cumulative GC dose in comparison with patients treated with systemic corticosteroids continuously, after adjusting for BMI and lung function, osteoporosis of the lumbar spine was most frequent in patients receiving > 1,000 mg of prednisolone cumulatively, administered in multiple courses for the treatment of exacerbations of COPD.
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