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Mini Nutritional Assessment Short-Form as screening tool for osteoporosis in patients with chronic obstructive
Yukio Fujita1, Masanori Yoshikawa1, Motoo Yamauchi1
1Department of Respiratory Medicine, Nara Medical University, Kashihara, Japan.
Background And Objectives:
Osteoporosis is a common complication of chronic obstructive pulmonary dis-ease (COPD). It is impractical to measure bone mineral density (BMD) in all patients with COPD. This study aimed to investigate the relationship between Mini Nutritional Assessment Short-Form (MNA-SF), a simple nutritional status questionnaire, and osteoporosis, and to determine whether it can be used as a reliable screening tool for osteoporosis in patients with COPD.
Methods And Study Design:
Thirty-seven patients with stable COPD were enrolled in this prospective cohort study. Patients with MNA-SF scores >11 were defined as well-nourished, and those with scores of ≤11 being at risk for malnutrition. Body composition, BMD, and undercarboxylated osteocalcin (ucOC), a bone metabolism marker, were measured using bioelectrical impedance, dual energy X-ray, and electrochemiluminescence immunoassay, respectively.
Results:
Seventeen (45.9%) were classified as at risk for malnutrition, and 13 (35.1%) had osteoporosis. Patients at risk for malnutrition had significantly more osteoporosis and higher ucOC values than well-nourished patients (p=0.007, p=0.030, respectively). Patients with osteoporosis also had significantly lower body mass index (BMI) and fat-free mass index than those without osteoporosis (p= 0.007 and p=0.005, respectively), although FEV1 % pred was not significantly different. MNA-SF (cutoff value; 11) had better sensitivity to identify the presence of osteoporosis than BMI (cutoff value; 18.5 kg/m2) (sensitivity, 0.769; specificity, 0.708; sensitivity, 0.462; specificity, 0.875, respectively).
Conclusions:
MNA-SF was associated with osteoporosis and bone metabolism markers in patients with COPD. MNA-SF may be a useful screening tool for osteoporo-sis in patients with COPD.
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