孕周的临床评估：两种方法的比较。
Clinical assessment of gestational age: a comparison of two methods.
作者信息
Faustin D, Gutierrez L, Gintautas J, Calame R J
机构信息
Department of Obstetrics and Gynecology, Brookdale Hospital Medical Center, State University of New York.
出版信息
J Natl Med Assoc. 1991 May;83(5):425-9.
The ratio of fundal height (FH) to maternal abdominal length (MAL) was defined as percentage of maternal abdominal length (PMAL) and compared to FH alone in 100 consecutive uncomplicated pregnancies from the 18th week of gestation to delivery at term. Reference graphs for fetal growth evaluation were developed using these two clinical methods. The predictive value of each technique was assessed by comparing gestational age estimates in 29 additional patients at various gestational ages. The correlation coefficient between the known gestational ages and estimates by the PMAL method was .86, and between known gestational ages and estimates by the FH method, .94. Twenty more patients were evaluated by three obstetricians in a double-blind fashion to determine gestational ages by each technique. The average deviation from the real gestational age varied from 2.07 to 3.14 weeks using the FH method, and from 2.82 to 3.97 weeks using the PMAL graph. It was concluded that FH measurement correlates better with gestational age than its ratio to the MAL.
宫高（FH）与孕妇腹长（MAL）的比值定义为孕妇腹长百分比（PMAL），并在100例从妊娠第18周直至足月分娩的连续无并发症妊娠中，将其与单独的宫高进行比较。利用这两种临床方法绘制了用于评估胎儿生长的参考图表。通过比较另外29例不同孕周患者的孕周估计值，评估了每种技术的预测价值。已知孕周与PMAL法估计值之间的相关系数为0.86，已知孕周与宫高法估计值之间的相关系数为0.94。另外20例患者由三位产科医生采用双盲方式进行评估，以通过每种技术确定孕周。使用宫高法时，与实际孕周的平均偏差在2.07至3.14周之间，使用PMAL图表时，平均偏差在2.82至3.97周之间。得出的结论是，宫高测量与孕周的相关性优于其与腹长的比值。
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