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Adverse pregnancy outcome after a false-positive screen for Down syndrome using multiple markers.

Authors
Pergament, E; Stein, AK; Fiddler, M; Cho, NH; Kupferminc, MJ
Citation
Obstetrics and gynecology, 86(2):255-258, 1995
Journal Title
Obstetrics and gynecology
ISSN
0029-78441873-233X
Abstract
OBJECTIVE: To assess the relative risk of an adverse pregnancy outcome in women whose multiple-marker screening (maternal serum alpha-fetoprotein [MSAFP], unconjugated estriol [E3], and hCG levels, and age) indicating an increased risk for Down syndrome (more than 1:250) was not confirmed by amniocentesis.



METHODS: Fifty-eight women with false-positive screens for Down syndrome were matched with a control group of 116 women whose screens indicated a risk for Down syndrome of less than 1:250. The risk for adverse pregnancy outcome was compared for the two groups, and the roles of MSAFP, unconjugated E3, and hCG as predictors of adverse pregnancy outcome were determined.



RESULTS: Women with false-positive screens for Down syndrome were significantly different from their matched controls in the incidence of preterm delivery (20.6 versus 8.6%, respectively), preeclampsia (6.9 versus 0%), small for gestational age newborns (5.2 versus 0%), and fetal demise after 20 weeks' gestation (5.2 versus 0%). An adverse outcome occurred in 19 of 58 pregnancies (32.8%) in the study group and in 14 of 116 matched control pregnancies (12%) (odds ratio [OR] 3.5, 95% confidence interval [CI] 1.6-7.8; P < .01). Unconjugated E3 of 0.75 multiples of the mean (MoM) or less was significantly associated with adverse pregnancy outcome after controlling for the effects of MSAFP and hCG (OR 2.5, 95% CI 1.13-5.55; P < .02).



CONCLUSION: One in three women with a false-positive screen for Down syndrome may experience an adverse pregnancy outcome. In this study, unconjugated E3 of 0.75 MoM or less appeared to be a better predictor of adverse pregnancy outcome than were MSAFP and hCG levels.
MeSH terms
AdultAmniocentesisCase-Control StudiesChorionic Gonadotropin/bloodConfidence IntervalsDown Syndrome/*diagnosisEstriol/bloodFalse Positive ReactionsFemaleFetal Diseases/*diagnosisHumansMaternal AgeOdds RatioPredictive Value of TestsPregnancyPregnancy Outcome/*epidemiology*Prenatal DiagnosisRisk Factorsalpha-Fetoproteins/analysis
PMID
7542379
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Preventive Medicine & Public Health
AJOU Authors
조, 남한
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