Methods for Estimating the Due Date
Methods for Estimating the Due Date
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DOI：
10.1097/aog.0000000000002046
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发表时间：
2017-05-01
影响因子：
7.2
通讯作者：
Copel, Joshua A.
中科院分区：
文献类型：
--
作者：
Pettker, Christian M.;Goldberg, James D.;Copel, Joshua A.
准确的怀孕日期对改善结果很重要，是研究和公共卫生的当务之急。一旦获得末次月经、第一次准确的超声检查或两者的数据，应确定孕龄和预计预产期（EDD），与患者讨论，并在病历中明确记录。EDD的后续变更应保留在罕见情况下，与患者讨论，并在病历中明确记录。在孕龄22 0/7周之前，如果没有超声检查证实或修改EDD，则应视为次优日期。当根据本文件中概述的预产期估计方法确定时，分娩时的胎龄代表了临床护理目的的最佳产科估计值，并应记录在出生证明上。为了研究和监测的目的，最好的产科估计，而不是仅根据最后一次月经的估计，应被用作胎龄的措施。
Accurate dating of pregnancy is important to improve outcomes and is a research and public health imperative. As soon as data from the last menstrual period, the first accurate ultrasound examination, or both are obtained, the gestational age and the estimated due date (EDD) should be determined, discussed with the patient, and documented clearly in the medical record. Subsequent changes to the EDD should be reserved for rare circumstances, discussed with the patient, and documented clearly in the medical record. A pregnancy without an ultrasound examination that confirms or revises the EDD before 22 0/7 weeks of gestational age should be considered suboptimally dated. When determined from the methods outlined in this document for estimating the due date, gestational age at delivery represents the best obstetric estimate for the purpose of clinical care and should be recorded on the birth certificate. For the purposes of research and surveillance, the best obstetric estimate, rather than estimates based on the last menstrual period alone, should be used as the measure for gestational age.