低体重儿约占围产儿死亡率和发病率的75%〔1〕,是正常体重新生儿死亡率的111倍〔2〕,部份遗留远期体格发育及智力障碍。本文对在我院分娩的180例单胎足月低体重儿就其发生因素及新生儿情况进行探讨。临床资料　一般资料:自1994年1月至1998年12月,我院共分娩单胎足月低体重儿180 Low birth weight children accounted for about 75% of the mortality and morbidity [1], is 111 times the normal weight of neonatal mortality 〔2〕, part of the legacy of long-term physical development and mental retardation. In this paper, 180 cases of singleton full-term low birth weight infants born in our hospital were investigated for their causes and newborns. Clinical data General information: From January 1994 to December 1998, our hospital produced a total of single-birth full-term low birth weight infants 180