Ott W J
Department of Obstetrics and Gynecology, St. John's Mercy Medical Center, St. Louis, Missouri.
Obstet Gynecol. 1990 Jun;75(6):1053-9.
A method of predicting birth weight from a single ultrasound examination between 18-28 weeks' gestation was evaluated prospectively in 315 obstetric patients with singleton pregnancies. Estimated fetal weight at the time of the ultrasound examination was used to predict actual birth weight. At delivery, the percent difference between the projected and actual birth weights was then used to define whether an infant was small, appropriate, or large for gestational age. This method appeared to be accurate and showed identical relationships to the presence of abnormal fetal heart rate patterns in growth-retarded infants as did the traditional birth-weight-for-gestational-age method of defining intrauterine growth retardation.
对315名单胎妊娠的产科患者进行了前瞻性评估，以一种在妊娠18至28周之间通过单次超声检查预测出生体重的方法。超声检查时的估计胎儿体重用于预测实际出生体重。分娩时，预测出生体重与实际出生体重之间的百分比差异随后被用于确定婴儿是小于、适于还是大于胎龄。这种方法似乎是准确的，并且在生长受限婴儿中，与传统的根据胎龄计算出生体重来定义宫内生长受限的方法一样，显示出与异常胎儿心率模式的存在具有相同的关系。
