【摘要】 为了解不同类型胎儿体格发育（出生体重、身长、头围）情况及小于胎龄儿相关因素,自1999年5月～2000年12月,对在我院分娩的单胎活产新生儿及其母亲424对,进行前瞻性调查。结果显示:小于胎龄儿（SGA）36例,发生率为8.5％,适于胎龄儿（AGA）294例,大于胎龄儿（LGA）94例,SGA组除出生体重外,身长、头围三项指标均低,与AGA组有非常显著意义（P值均<0.001）。影响SGA体格发育Logis-tic回归分析:最主要危险因素为母孕早期剧吐、被动吸烟、贫血、羊水量过少和母患妊高征。母亲身高、文化程度、胎盘重量与胎儿体格发育呈正相关。SGA组新生儿生后五天内发病率最高为33.3％,与AGA组的2.7％比较有非常显著意义（P<0.01）。因此,防治常见妊娠合并症,加强孕期营养,提高自我保护意识,将有助于降低SGA发生。更多还原

【Abstract】 To investigate physical development and contributing risk factors small for gestational age infant (SGA), In this prospective study for 424 pairs newborns and their mothers in our hospital from May, 1999 to Dec, 2000 were included. Results showed the incidence of SGA was 8.5% . Except weight , height and circumference were significant lower in SGA comparied with appropriate for gestational age in-fant (AGA) and large for gestational age infant (LGA) . Logistic regression analysis of risk factors of SGA group, the main risk factors contributing to development of SGA included mothers had severe vomiting, passive smoking, anemia and hypertensive state of pregnancy. The morbidity of SGA infants was 33.3% , which was significant different with AGA group (2.7%) (P <0.01) . Therefore, prevention and treatment of the diseases of pregnancy women may be helpful to reduce the incidence of SGA.更多还原