Forsum Elisabet, Olhager Elisabeth, Törnqvist Caroline
Department of Clinical and Experimental Medicine, Linköping University, SE-581 83 Linköping, Sweden.
Department of Clinical Sciences, Lund University, SE-221 85 Lund, Sweden.
Nutrients. 2016 Apr 22;8(4):238. doi: 10.3390/nu8040238.
(1) BACKGROUND: Assessing the quality of growth in premature infants is important in order to be able to provide them with optimal nutrition. The Pea Pod device, based on air displacement plethysmography, is able to assess body composition of infants. However, this method has not been sufficiently evaluated in premature infants; (2) METHODS: In 14 infants in an age range of 3-7 days, born after 32-35 completed weeks of gestation, body weight, body volume, fat-free mass density (predicted by the Pea Pod software), and total body water (isotope dilution) were assessed. Reference estimates of fat-free mass density and body composition were obtained using a three-component model; (3) RESULTS: Fat-free mass density values, predicted using Pea Pod, were biased but not significantly (p > 0.05) different from reference estimates. Body fat (%), assessed using Pea Pod, was not significantly different from reference estimates. The biological variability of fat-free mass density was 0.55% of the average value (1.0627 g/mL); (4) CONCLUSION: The results indicate that the Pea Pod system is accurate for groups of newborn, moderately premature infants. However, more studies where this system is used for premature infants are needed, and we provide suggestions regarding how to develop this area.
(1) 背景：评估早产儿的生长质量对于为他们提供最佳营养至关重要。基于空气置换体积描记法的豌豆荚设备能够评估婴儿的身体成分。然而，这种方法在早产儿中尚未得到充分评估；(2) 方法：对14名出生于妊娠32 - 35周且年龄在3 - 7天的婴儿，评估其体重、身体体积、无脂肪质量密度（由豌豆荚软件预测）和总体水（同位素稀释法）。使用三成分模型获得无脂肪质量密度和身体成分的参考估计值；(3) 结果：使用豌豆荚预测的无脂肪质量密度值存在偏差，但与参考估计值无显著差异（p > 0.05）。使用豌豆荚评估的体脂（%）与参考估计值无显著差异。无脂肪质量密度的生物学变异为平均值（1.0627 g/mL）的0.55%；(4) 结论：结果表明，豌豆荚系统对于足月、中度早产的新生儿群体是准确的。然而，需要更多使用该系统对早产儿进行研究，并且我们提供了关于如何发展该领域的建议。
