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Related Experiment Videos

Sex ratio in ectopic gestations.

D Dotters, J R Davis, C D Christian

    Fertility and Sterility
    |May 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    This study determined fetal sex in 80 ectopic pregnancies using quinacrine staining of chorionic villi. Results show a near 1:1 sex ratio, indicating no sex predilection for ectopic implantation.

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    Area of Science:

    • Reproductive Medicine
    • Genetics
    • Obstetrics

    Background:

    • Ectopic pregnancy is a significant cause of maternal morbidity.
    • Understanding factors influencing ectopic implantation, including fetal sex, is crucial.

    Purpose of the Study:

    • To determine the sex of fetuses in ectopic pregnancies.
    • To investigate if fetal sex influences the likelihood of ectopic implantation.

    Main Methods:

    • Sex assignment was performed on 80 ectopic pregnancy cases.
    • Tissue sections of chorionic villi were stained with quinacrine to identify X-chromatin (Barr body) and Y-chromatin.

    Main Results:

    • Sex determination revealed 51.2% X-chromatin-positive (female) and 47.5% Y-chromatin-positive (male) fetuses.

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  • A small percentage (1.3%) showed both X- and Y-chromatin in the same nuclei.
  • The sex ratio of ectopic gestations was 0.92 males to 1 female.

    • Conclusions:

    • The observed sex ratio in ectopic pregnancies is close to the expected population ratio.
    • These findings suggest that fetal sex does not appear to predispose to ectopic implantation.