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Related Experiment Videos

Urinary tract dilatation in pregnancy.

A Schulman, H Herlinger

    The British Journal of Radiology
    |August 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Urinary tract dilatation in pregnancy is uncommon early on but appears by mid-term. This common finding, especially on the right, rarely causes severe issues and helps define normal intravenous urograms.

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    Proceedings of the Royal Society of Medicine·2009

    Area of Science:

    • Radiology
    • Urology
    • Obstetrics

    Background:

    • Pregnancy commonly causes urinary tract changes.
    • Establishing normal variations in intravenous urograms during pregnancy is crucial for accurate diagnosis.

    Purpose of the Study:

    • To define the incidence and degree of urinary tract dilatation during pregnancy.
    • To establish normative data for intravenous urograms in pregnant patients.

    Main Methods:

    • Retrospective review of 220 intravenous urograms in pregnant patients with normal urinary tracts.
    • Observer-agreement technique used for data analysis.

    Main Results:

    • Urinary tract dilatation is uncommon before mid-term, appearing abruptly thereafter.

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  • Post mid-term, 75% of cases show right-sided dilatation, 33% left-sided.
  • Severe dilatation is infrequent; ureteral displacement occurs in a minority.

    • Conclusions:

    • Pregnancy-induced urinary tract dilatation follows a predictable pattern after mid-term.
    • Findings provide a basis for normal limits in pregnancy intravenous urograms.
    • Dilatation shows little association with fetal position, gravidity, or infection.