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  • Title: Upper arm anthropometry is not a valid predictor of regional body composition in preterm infants.
    Author: Pereira-da-Silva L, Abecasis F, Virella D, Videira-Amaral JM.
    Journal: Neonatology; 2009; 95(1):74-9. PubMed ID: 18787340.
    Abstract:
    BACKGROUND: Upper arm anthropometry has been used in the nutritional assessment of small infants, but it has not yet been validated as a predictor of regional body composition in this population. OBJECTIVE: Validation of measured and derived upper arm anthropometry as a predictor of arm fat and fat-free compartments in preterm infants. METHODS: Upper arm anthropometry, including the upper arm cross-sectional areas, was compared individually or in combination with other anthropometric measurements, with the cross-sectional arm areas measured by magnetic resonance imaging, in a cohort of consecutive preterm appropriate-for-gestational-age neonates, just before discharge. RESULTS: Thirty infants born with (mean +/- SD) a gestational age of 30.7 +/- 1.9 weeks and birth weight of 1,380 +/- 325 g, were assessed at 35.4 +/- 1.1 weeks of corrected gestational age, weighing 1,785 +/- 93 g. None of the anthropometric measurements are reliable predictors (r(2) < 0.56) of the measurements obtained by magnetic resonance imaging, individually or in combination with other anthropometric measurements. CONCLUSION: Both measured anthropometry and derived upper arm anthropometry are inaccurate predictors of regional body composition in preterm appropriate-for-gestational-age infants.
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