Non-invasive prenatal testing is not a substitute for first trimester ultrasound screening
The ultrasound examination in the first trimester is a crucial tool in prenatal diagnostics. Its primary aim is the early detection of fetal structural anomalies with the option to assess the risk for the common fetal trisomies (in Switzerland: “Ersttrimestertest”). The latter is achieved by combin...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SMW supporting association (Trägerverein Swiss Medical Weekly SMW)
2025-06-01
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| Series: | Swiss Medical Weekly |
| Online Access: | https://smw.ch/index.php/smw/article/view/4610 |
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| Summary: | The ultrasound examination in the first trimester is a crucial tool in prenatal diagnostics. Its primary aim is the early detection of fetal structural anomalies with the option to assess the risk for the common fetal trisomies (in Switzerland: “Ersttrimestertest”). The latter is achieved by combining ultrasound data with biochemical blood tests.
In addition to chromosomal diagnostics, the first-trimester ultrasound plays an essential role in evaluating pregnancy risks as well as the overall health of the fetus. This method is non-invasive, safe and effective, offering invaluable information to both healthcare professionals and expectant parents that is critical for further pregnancy care.
The introduction and wide-spread use of another, molecular test, NIPT (“non-invasive prenatal testing”) should be seen as a useful additional option to, not a substitute for first trimester ultrasound. NIPT has high detection rates for “the common trisomies”, but, in isolation, is insufficient for comprehensive early fetal assessment.
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| ISSN: | 1424-3997 |