Effect of Body Position on Energy Expenditure of Preterm Infants as Determined by Simultaneous Direct and Indirect Calorimetry.
Effect of Body Position on Energy Expenditure of Preterm Infants as Determined by Simultaneous Direct and Indirect Calorimetry.
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DOI：
10.1055/s-0036-1593476
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发表时间：
2017-04
影响因子：
2
通讯作者：
Dove EL
中科院分区：
文献类型：
--
作者：
Bell EF;Johnson KJ;Dove EL
间接量热法是临床研究中估计能量消耗的标准方法。很少有研究通过将间接测热法与同步直接测热法进行比较来评估婴儿的间接测热法。我们的目的是（1）比较直接测热法和间接测热法测定的早产儿能量消耗;（2）检查仰卧或俯卧体位对能量消耗的影响。我们测量了能量消耗的同时直接（热损失梯度层热量计校正蓄热）和间接热量测定法（全身耗氧量和二氧化碳的生产）在15个成长中的早产儿在两个连续的interfeeding间隔，一次在仰卧位，一次俯卧位。两种体位所有测量的平均能量消耗在所用方法上没有显著差异：直接量热法为2.82（SD 0.42）kcal·kg−1·h−1，间接量热法为2.78（SD 0.48）kcal·kg−1·h−1。无论是通过直接测热法（2.67 vs 2.97 kcal·kg-1·h-1，P<0.001）还是间接测热法（2.64 vs 2.92 kcal·kg-1·h-1，P=0.017）检测，俯卧位的能量消耗均显著低于仰卧位（10%）。直接量热法和间接量热法给出了类似的能量消耗估计。俯卧位的能量消耗比仰卧位低10%。
Indirect calorimetry is the standard method for estimating energy expenditure in clinical research. Few studies have evaluated indirect calorimetry in infants by comparing it with simultaneous direct calorimetry. Our purpose was (1) to compare the energy expenditure of preterm infants determined by these two methods, direct calorimetry and indirect calorimetry; and (2) to examine the effect of body position, supine or prone, on energy expenditure. We measured energy expenditure by simultaneous direct (heat loss by gradient-layer calorimeter corrected for heat storage) and indirect calorimetry (whole-body oxygen consumption and carbon dioxide production) in 15 growing preterm infants during two consecutive interfeeding intervals, once in the supine position and once prone. The mean energy expenditure for all measurements in both positions did not differ significantly by method used: 2.82 (SD 0.42) kcal·kg−1·h−1 by direct calorimetry and 2.78 (SD 0.48) kcal·kg−1·h−1 by indirect calorimetry. The energy expenditure was significantly lower, by 10%, in the prone than in the supine position, whether examined by direct calorimetry (2.67 vs 2.97 kcal·kg−1·h−1, P<0.001) or indirect calorimetry (2.64 vs 2.92 kcal·kg−1·h−1, P=0.017). Direct calorimetry and indirect calorimetry gave similar estimates of energy expenditure. Energy expenditure was 10% lower in the prone position than in the supine position.