期刊
AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
卷 196, 期 4, 页码 -出版社
MOSBY-ELSEVIER
DOI: 10.1016/j.ajog.2006.11.019
关键词
amniotic fluid index (AFI); combined third-trimester AFI and EFW analysis; estimated fetal weight (EFW); severe fetal macrosomia
OBJECTIVE: To evaluate combined analysis with amniotic fluid index (AFI) and estimated fetal weight (EFW) for prediction of severe macrosomia at birth. STUDY DESIGN: In this retrospective case-control study, 50 term severe macrosomic newborns (birthweight [BW] >= 97th percentile) were included in the study group and 100 appropriate for gestational age newborns served as controls. All pregnancies underwent a third-trimester sonographic evaluation in which AFI and EFW were measured. The association between BW and AFI and EFW percentiles was examined. The statistical analysis included Student t test, simple regression and receiver-operating curve analyses, and 2 x 2 tables. RESULTS: The mean mid-third-trimester AFI percentile and EFW percentile in severe macrosomic infants were 72.4 +/- 22.5 and 83 +/- 12, respectively, which was significantly higher than in controls ( P < .0001). Significant correlations were detected between BW and AFI and EFW percentiles (r = 0.44 and r = 0.72, respectively; P = .0001). Receiver-operating characteristic analysis identified AFI >= 60th percentile and EFW >= 71st percentile as best predictors of severe macrosomia. The combined analysis with AFI >= 60th percentile and EFW >= 71st percentile resulted in a positive predictive value of 85%. CONCLUSION: There is a significant correlation between mid-third-trimester AFI and BW. AFI >= 60th percentile and EFW >= 71st percentile during the mid third trimester are useful predictors of severe macrosomia at birth.
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