Catanzarite V A, Rose B I
Am J Perinatol. 1987 Apr;4(2):147-51. doi: 10.1055/s-2007-999760.
Gestational age determination based on obstetric dating criteria, early pregnancy ultrasound scans, Dubowitz examinations, and ultrasound scans performed shortly before delivery were reviewed for 69 preterm infants requiring neonatal intensive care. The last ultrasound scans underestimated gestational age by a median of 8 days, and by 2 weeks or more in 20 of the 69 cases, as opposed to best dating criteria. Ultrasonic fetal weight estimation was more accurate, but erred by more than 20% in 10% of cases. When obstetric decisions regarding preterm neonates must be made without prior information regarding gestational age, late ultrasound findings must be applied with extreme care.
对69例需要新生儿重症监护的早产儿，回顾了基于产科孕周标准、孕早期超声扫描、杜波维茨检查以及分娩前不久进行的超声扫描来确定孕周的情况。与最佳孕周标准相比，最后一次超声扫描低估孕周的中位数为8天，69例中有20例低估2周或更多。超声估计胎儿体重更准确，但10%的病例误差超过20%。当必须在没有孕周相关先验信息的情况下做出关于早产儿的产科决策时，必须极其谨慎地应用晚期超声检查结果。
