Sloan C T, Lorenz R P
Department of Obstetrics and Gynecology, William Beaumont Hospital, Royal Oak, MI 48073.
J Reprod Med. 1991 Aug;36(8):598-602.
Significant differences exist between the published nomograms of birth weight for gestational age. Differences in demographics, altitude above sea level and study methodology have all been implicated. A three-year experience of uncomplicated singleton gestations (N = 14,766) was analyzed for birth weight and gestational age. The mean, 10th percentile and their 95% confidence intervals were compared to Brenner's data and a pooled sample from other studies in this country. The mean birth weights were significantly higher than Brenner's after 32 weeks' gestation and higher than the pooled mean after 35. The 10th percentiles were significantly greater than Brenner's after 36 weeks' gestation. Approximately 66% of neonates at risk, below our 10th percentile, would not be identified with Brenner's criteria. We agree with Goldenberg that uniform criteria for the definition of the normal population are important in identifying aberrant growth. However, birth weight standards should be developed for the specific population in question.
不同孕周出生体重的列线图之间存在显著差异。人口统计学、海拔高度和研究方法的差异都被认为是相关因素。对14766例单胎妊娠无并发症的三年经验进行了出生体重和孕周分析。将均值、第10百分位数及其95%置信区间与布伦纳的数据以及该国其他研究的汇总样本进行了比较。妊娠32周后平均出生体重显著高于布伦纳的数据，妊娠35周后高于汇总均值。妊娠36周后第10百分位数显著高于布伦纳的数据。在我们第10百分位数以下的高危新生儿中，约66%不符合布伦纳的标准。我们同意戈德堡的观点，即正常人群定义的统一标准对于识别异常生长很重要。然而，应该针对特定人群制定出生体重标准。
