随着医学水平的提高,早产儿的存活率明显上升。早产儿在出生时各器官存在着不同程度的发育不成熟,生后早期营养支持不仅关系到近期体质量增长和发病率降低,更重要的是影响到包括神经发育在内的远期预后。美国儿科营养学会委员会推荐:早产儿的营养供给量应能维持其生长速度达到 With the improvement of the medical level, the survival rate of premature children is obviously increased. Premature babies have various degrees of immaturity in their organs at birth. Early nutritional support is not only related to the recent increase in body weight and incidence, but more importantly, long-term prognosis including neurodevelopment. The American Academy of Pediatric Nutrition recommends that the nutritional supply of preterm infants should be able to maintain their growth rate