Al-Inany H, Alaa N, Momtaz M, Abdel Badii M
Department of Obstetrics and Gynecology, Cairo University, Cairo, Egypt.
Gynecol Obstet Invest. 2001;51(2):116-9. doi: 10.1159/000052905.
To evaluate the accuracy of abdominal circumference (AC) estimation of macrosomia early in labor and whether a cutoff value could be detected.
A prospective clinical trial.
The Department of Obstetrics and Gynecology, Cairo University.
One hundred pregnant females presenting in early labor with clinical impression of macrosomia were examined by ultrasound, and those babies with abdominal circumference more or equal to 35 cm were recruited for the study.
Every woman was considered as her own control, and fetal weight was calculated using the formula of Shepard et al. The accuracy of abdominal circumference in prediction of macrosomia was evaluated using the Receiver operating characteristic curve.
A cutoff value of AC > or =37 cm was found to have a sensitivity of 77%, a specificity of 75%, a positive likelihood ratio of 3.1 and a negative likelihood ratio of 0.3.
Intrapartum ultrasonographic evaluation of abdominal circumference for suspected macrosomic babies in early labor is an easy, practical method that should be adopted in decision making.
评估产程早期估计巨大儿腹围（AC）的准确性，以及是否能检测到一个临界值。
一项前瞻性临床试验。
开罗大学妇产科。
对100名产程早期有巨大儿临床印象的孕妇进行超声检查，招募腹围大于或等于35cm的婴儿进行研究。
将每位女性视为自身对照，使用谢泼德等人的公式计算胎儿体重。使用受试者工作特征曲线评估腹围预测巨大儿的准确性。
发现AC≥37cm的临界值敏感性为77%，特异性为75%，阳性似然比为3.1，阴性似然比为0.3。
产程中对产程早期疑似巨大儿的婴儿进行腹围超声评估是一种简单、实用的方法，在决策时应采用。
