Lapillonne A, Peretti N, Ho P S, Claris O, Salle B L
Department of Neonatology, Hôpital Edouard Herriot, Lyon, France.
Acta Paediatr Suppl. 1997 Nov;423:173-6; discussion 177. doi: 10.1111/j.1651-2227.1997.tb18406.x.
Infants born small for gestational age (SGA) are a heterogeneous group. Both the timing and duration of the intrauterine insult determine the physical condition and body composition of the infant at birth. Infants with symmetrical intrauterine growth retardation (IUGR) have a similar body composition at birth to weight-matched infants born appropriate for gestational age. However, these infants are more likely to remain shorter and lighter than normal infants. In contrast, infants with asymmetrical IUGR have reduced fat deposition but are more likely to exhibit catch-up growth during the first few months of life. The low mortality and morbidity rates in infants born SGA observed in recent studies are linked to their appropriate perinatal management, including adequate early nutritional support.
小于胎龄儿（SGA）是一个异质性群体。宫内损伤的时间和持续时间决定了婴儿出生时的身体状况和身体组成。对称性宫内生长受限（IUGR）的婴儿出生时的身体组成与出生时体重匹配的适于胎龄儿相似。然而，这些婴儿比正常婴儿更有可能保持较矮和较轻的状态。相比之下，不对称性IUGR的婴儿脂肪沉积减少，但在生命的头几个月更有可能出现追赶性生长。最近的研究中观察到的SGA婴儿的低死亡率和发病率与适当的围产期管理有关，包括充足的早期营养支持。
