Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.
Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.
Nutr Clin Pract. 2020 Aug;35(4):680-688. doi: 10.1002/ncp.10366. Epub 2019 Jul 3.
Human milk (HM) is the first choice for preterm infants, but exclusive HM feeding is inadequate for the growth of very preterm infants. The hypothesis of this trial is that infants fed according to an individualized fortification regimen will have higher protein intake and improved weight gain velocity (WGV).
A prospective, randomized, controlled study was conducted. Infants <34 weeks of gestational age were enrolled when enteral feeding volume reached 60 mL/kg/d and were randomly allocated to the individualized fortification (IF) group or the standard fortification group. The IF group was fed using a regimen that featured modifying HM fortifier and supplemental protein powder based on the protein concentration in HM, current body weight of infants, and blood urea nitrogen (fortification level was set as L-1, L0, L1, L2, L3; the amount of HM fortifier and protein powder were determined accordingly).
Between September 2012 and August 2016, 51 preterm infants completed the study. In the IF group, 62.5% (15/24) of preterm infants were fed with HM fortified to level 1, 29.2% (7/24) to level 2, and 12.5% (3/24) to level 3. The WGV of the third week in the IF group was greater than the standard group (20.8 ± 7.9 vs 14.9 ± 4.5 g/kg/d, P = 0.022).
About two-thirds of preterm infants needed to adjust the HM fortification to a higher level. The WGV of infants in the IF group was better than that of the standard group in the third week of this study.
人乳是早产儿的首选,但单纯人乳喂养不能满足极早产儿的生长需求。本试验假设,根据个体化强化方案喂养的婴儿会有更高的蛋白质摄入量和更快的体重增长速度(WGV)。
采用前瞻性、随机、对照研究。当肠内喂养量达到 60ml/kg/d 时,纳入胎龄<34 周的婴儿,并随机分配到个体化强化(IF)组或标准强化组。IF 组根据人乳中的蛋白质浓度、婴儿当前体重和血尿素氮(BUN),采用调整人乳强化剂和补充蛋白粉的方案进行喂养(强化水平设定为 L-1、L0、L1、L2、L3;相应地确定人乳强化剂和蛋白粉的量)。
2012 年 9 月至 2016 年 8 月,51 例早产儿完成了本研究。IF 组中,62.5%(15/24)的早产儿以 1 级强化人乳喂养,29.2%(7/24)以 2 级强化人乳喂养,12.5%(3/24)以 3 级强化人乳喂养。IF 组第 3 周的 WGV 大于标准组(20.8±7.9 比 14.9±4.5g/kg/d,P=0.022)。
大约三分之二的早产儿需要调整人乳强化至更高水平。在本研究的第 3 周,IF 组婴儿的 WGV 优于标准组。