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Related Experiment Videos

Maternal serum alpha-fetoprotein screening after chorionic villus sampling.

M E Sigler1, C R Colyer, J P Rossiter

  • 1Genetics & IVF Institute, Fairfax, Virginia.

Obstetrics and Gynecology
|December 1, 1987
PubMed
Summary

Maternal serum alpha-fetoprotein (MSAFP) screening is reliable after chorionic villus sampling. MSAFP levels in post-chorionic villus sampling patients show no significant difference compared to controls, allowing similar interpretation criteria.

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Area of Science:

  • Obstetrics and Gynecology
  • Prenatal Diagnostics
  • Biochemistry

Background:

  • Maternal serum alpha-fetoprotein (MSAFP) is a key biomarker for prenatal screening.
  • Chorionic villus sampling (CVS) is an invasive diagnostic procedure.
  • The potential impact of CVS on subsequent MSAFP levels requires evaluation for accurate prenatal screening.

Purpose of the Study:

  • To determine if chorionic villus sampling (CVS) affects maternal serum alpha-fetoprotein (MSAFP) concentrations.
  • To assess the reliability of MSAFP screening in women who have undergone CVS.
  • To establish if existing MSAFP interpretation criteria are applicable to post-CVS patients.

Main Methods:

  • Retrospective cohort study comparing MSAFP levels.
  • MSAFP measurements were analyzed at 15-18 weeks' gestation.

Related Experiment Videos

  • Comparison between 417 post-CVS patients and 967 control subjects without prior CVS.

    • Main Results:

    • No statistically significant differences were observed in medians, distributions, or proportions of MSAFP levels between post-CVS patients and controls.
    • MSAFP levels were not significantly influenced by CVS performed 3-10 weeks prior to testing.
    • The findings support the consistency of MSAFP levels irrespective of prior CVS.

    Conclusions:

    • MSAFP screening remains a reliable method for prenatal assessment in women who have undergone chorionic villus sampling.
    • MSAFP values in post-CVS patients can be interpreted using standard criteria applied to the general population.
    • This study validates the use of current MSAFP screening protocols for post-CVS pregnancies.