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Prenatal diagnosis versus first-trimester screening of trisomy 21 among pregnant women aged 35 or more.
- Source :
-
Journal of Maternal-Fetal & Neonatal Medicine . Apr2015, Vol. 28 Issue 6, p674-678. 5p. - Publication Year :
- 2015
-
Abstract
- Objective: To compare the policy of prenatal diagnosis versus first trimester screening of trisomy 21 among pregnant women of advanced age. Methods: A retrospective study was conducted on patients aged ≥35 divided in two groups: patients who requested first trimester combined test and only in case of screen-positive result underwent invasive testing (group A); patients undergoing chorionic villous sampling or amniocentesis as first investigation (group B). The following outcome variables were compared: antenatal detection of trisomy 21, occurrence of trisomy 21 at birth, miscarriage rate, hospitals' costs. Results: 4527 women were included. Of these, 534 (11.80%) underwent T21 screening whereas 3993 (88.20%) requested primary invasive testing. In group A, 64 combined test were positive (11.99%) and 8 trisomy 21 cases were diagnosed (1.50%); the loss of euploid fetuses after invasive procedure was 4.55% (2/44). No false-negative case was observed. In group B 57 cases of trisomy 21 were diagnosed (1.43%), and pregnancy loss rate of chromosomally normal fetuses was 0.45% (17/3806). The estimated cost was, respectively, 67.720€ for the primary screening versus 1.996.500€ for direct prenatal diagnosis. Conclusion: First trimester screening of trisomy 21 is highly accurate and cost saving among women ≥35. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14767058
- Volume :
- 28
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Maternal-Fetal & Neonatal Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 102668744
- Full Text :
- https://doi.org/10.3109/14767058.2014.928852