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Related Experiment Videos

A diagnostic index for Down syndrome.

A P Rex, M Preus

    The Journal of Pediatrics
    |June 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    A new diagnostic index uses eight phenotypic findings to accurately identify Down syndrome. This allows for early clinical diagnosis, informing parents and guiding medical decisions for newborns suspected of having the condition.

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    Area of Science:

    • Genetics
    • Pediatrics
    • Clinical Diagnostics

    Background:

    • Down syndrome is a genetic disorder often diagnosed postnatally.
    • Accurate and timely diagnosis is crucial for medical management and parental support.
    • Current diagnostic methods like karyotyping can be time-consuming.

    Purpose of the Study:

    • To develop and validate an effective diagnostic index for Down syndrome.
    • To enable rapid clinical diagnosis in suspected cases.
    • To reduce unnecessary genetic testing costs.

    Main Methods:

    • Utilized eight specific phenotypic findings for index development.
    • Included dermatoglyphic traits (hallucal and forefinger pattern, palmar triradius).
    • Incorporated physical measurements (ear length, internipple distance) and clinical signs (Brushfield spots, wide-spaced first toe, excess back neck skin).

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    Main Results:

    • The index effectively categorizes individuals suspected of having Down syndrome.
    • Achieved 99.9% confidence in categorizing 95% of suspected patients.
    • Facilitates early clinical diagnosis before complete karyotyping.

    Conclusions:

    • The developed index provides a fast and reliable method for Down syndrome diagnosis.
    • Enables prompt communication with parents and timely medical interventions.
    • Offers a cost-effective approach by minimizing unnecessary chromosome studies.