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The influence of noninvasive prenatal testing on gestational age at time of abortion for aneuploidy
Prenatal diagnosis, 2017-07, Vol.37 (7), p.635-639
Lassey, Sarah C.
Reiff, Emily S.
Dobson, Lori
Bromley, Bryann
Wilkins‐Haug, Louise
Bartz, Deborah
Little, Sarah E.
2017
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Lassey, Sarah C.
Reiff, Emily S.
Dobson, Lori
Bromley, Bryann
Wilkins‐Haug, Louise
Bartz, Deborah
Little, Sarah E.
Titel
The influence of noninvasive prenatal testing on gestational age at time of abortion for aneuploidy
Ist Teil von
Prenatal diagnosis, 2017-07, Vol.37 (7), p.635-639
Ort / Verlag
England: Wiley Subscription Services, Inc
Erscheinungsjahr
2017
Quelle
MEDLINE
Beschreibungen/Notizen
Objective The objective of this study is to compare the gestational age at termination for trisomy 13, 18, or 21 (aneuploidy) before and after the introduction of noninvasive prenatal testing (NIPT). Methods A retrospective cohort of women undergoing termination for aneuploidy at two academic institutions and one private clinic. We compared two time periods: before and after the introduction of NIPT (2006–2011 and 2012–2014, respectively). Maternal demographics and clinical characteristics were ed from the medical record. Nonparametric statistical methods were used to compare the two cohorts. Results Our cohort included 93 women: 41 prior to NIPT and 52 post‐NIPT. Maternal age (38 post‐NIPT vs 37 pre‐NIPT; p = 0.17) did not differ between the time periods. Women in the post‐NIPT were less likely to undergo diagnostic testing (82.7% vs 97.6%; p < 0.01) before proceeding to abortion after a positive screening result. In the post‐NIPT period, there was a significant decrease in the gestational age at time of invasive testing (13.0 vs 15.7 weeks; p < 0.01) and women were more likely to undergo chorionic villous sampling (CVS) (59.6% vs 41.5%; p < 0.01). There was a significant decrease in the gestational age at termination (14.2 vs 17.2; p < 0.01). Women in the post‐NIPT group were less likely to have terminations after 16 weeks (25.0% vs 61.0%; p < 0.01), 18 weeks (7.7% vs 39.0%; p < 0.01), or 20 weeks (3.9% vs 12.2%; p = 0.23). Conclusion With the introduction of NIPT, the median gestational age at diagnosis and termination for women with Trisomy 13, 18, or 21 was 3 weeks earlier. Women were four times less likely to have a termination after 18 weeks and three times less likely to have a termination after 20 weeks. © 2017 John Wiley & Sons, Ltd. What's already known about this topic? Screening for aneuploidy decreases the gestational age at termination. What does this study add? With the release of cell‐free DNA women are undergoing screening for aneuploidy earlier. Given this trend, we sought to evaluate the change in gestational age for diagnosis and termination in these women.
Sprache
Englisch
Identifikatoren
ISSN: 0197-3851
eISSN: 1097-0223
DOI: 10.1002/pd.5050
Titel-ID: cdi_proquest_miscellaneous_1889782377
Format
–
Schlagworte
Abortion
,
Abortion, Induced - statistics & numerical data
,
Adult
,
Age
,
Aneuploidy
,
Chemical vapor synthesis
,
Demographics
,
Demography
,
Deoxyribonucleic acid
,
Diagnosis
,
Diagnostic systems
,
DNA
,
Female
,
Gestational Age
,
Health risk assessment
,
Humans
,
Institutions
,
Maternal Serum Screening Tests
,
Medical screening
,
Patau's syndrome
,
Pregnancy
,
Prenatal development
,
Retrospective Studies
,
Statistical methods
,
Test procedures
,
Trisomy
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