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Related Experiment Videos

Low-lying placenta

M S Gillieson, H T Winer-Muram, D Muram

    Radiology
    |August 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Low-lying placentas often resolve by the third trimester. Posterior placenta location and anterior/posterior involvement indicate a higher risk of non-resolution and potential bleeding complications.

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    Area of Science:

    • Obstetrics and Gynecology
    • Medical Imaging
    • Fetal Medicine

    Background:

    • Low-lying placenta and placenta previa are common findings in early pregnancy.
    • Placental location can impact pregnancy outcomes and delivery management.
    • Ultrasonography is crucial for monitoring placental position throughout gestation.

    Purpose of the Study:

    • To evaluate the natural course of low-lying placentas identified in early to mid-pregnancy.
    • To determine the rate of placental migration and identify factors associated with non-resolution.
    • To assess the relationship between placental location and adverse bleeding events.

    Main Methods:

    • Prospective observational study involving 255 pregnant women undergoing routine ultrasonography.
    • Identification and classification of low-lying placentas and placenta previa before 32 weeks of gestation.

    Related Experiment Videos

  • Follow-up ultrasonographic examinations to monitor placental position and document any bleeding complications.

    • Main Results:

    • 16% of patients (6%) had a low-lying placenta or placenta previa before 32 weeks.
    • 63% of these cases resolved to a normal placental position by term.
    • Placentas located on the posterior wall or both anterior/posterior walls showed significantly lower rates of resolution and higher incidence of bleeding.

    Conclusions:

    • Low-lying placentas identified in early pregnancy have a high chance of migrating to a normal position.
    • Posterior placental location or involvement of both walls is associated with a higher risk of non-resolution.
    • Increased vigilance and monitoring are recommended for posterior or anterior/posterior low-lying placentas due to higher risks of complications.