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Real-time B-scan-directed amniocentesis.

L D Platt, F A Manning, M Lemay

    American Journal of Obstetrics and Gynecology
    |March 15, 1978
    PubMed
    Summary
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    Real-time B scan ultrasound improves amniocentesis success rates, especially in challenging cases. This imaging guidance offers advantages over static methods for obtaining amniotic fluid.

    Area of Science:

    • Obstetrics and Gynecology
    • Medical Imaging
    • Fetal Medicine

    Background:

    • Amniocentesis is a common prenatal diagnostic procedure.
    • Accurate needle placement is crucial for successful amniotic fluid collection.
    • Previous amniocentesis attempts may have failed due to technical difficulties.

    Purpose of the Study:

    • To evaluate the efficacy of real-time B scan ultrasound guidance for amniocentesis.
    • To compare real-time B scan with static B scan methods.
    • To assess the impact of real-time B scan on procedure success and complication rates.

    Main Methods:

    • 150 amniocenteses were performed in 143 patients using real-time B scan ultrasound.
    • Procedures were conducted in the second and third trimesters.

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  • Success rates, number of attempts, and fluid characteristics were recorded.

    • Main Results:

    • Amniotic fluid was obtained in a single attempt in 146 procedures.
    • Real-time B scan guided successful amniocentesis in patients with prior failed attempts.
    • Using the real-time indicated site resulted in clear fluid, avoiding bloody taps.

    Conclusions:

    • Real-time B scan ultrasound is a reliable method for guiding amniocentesis.
    • It demonstrates comparable reliability to static B scan and offers advantages in specific situations.
    • Real-time imaging enhances procedural success and potentially reduces complications.