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Related Experiment Videos

Midtrimester placenta previa: normal or pathologic finding.

S Ballas, S Gitstein, A J Jaffa

    Obstetrics and Gynecology
    |July 1, 1979
    PubMed
    Summary

    Midtrimester placenta previa (MTPP) detection using ultrasound is crucial. Early MTPP diagnosis, particularly symptomatic cases, indicates higher risks for pregnancy complications and adverse outcomes later in gestation.

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    Area of Science:

    • Obstetrics and Gynecology
    • Diagnostic Imaging
    • Maternal-Fetal Medicine

    Background:

    • Midtrimester placenta previa (MTPP) is a condition where the placenta partially or completely covers the internal cervical os during the second trimester of pregnancy.
    • Vaginal bleeding and prior amniocentesis are common indications for evaluating potential MTPP.
    • Understanding the correlation between MTPP grades and pregnancy outcomes is essential for clinical management.

    Purpose of the Study:

    • To evaluate the diagnostic utility of ultrasonic placentography in identifying midtrimester placenta previa (MTPP).
    • To correlate different grades of MTPP with pregnancy outcomes, including rates of cesarean section and preterm delivery.
    • To assess the clinical significance of MTPP findings for predicting later pregnancy complications.

    Main Methods:

    Related Experiment Videos

    • Ultrasonic placentography was performed on 123 women between 1974-1977 to diagnose MTPP.
    • Patients were categorized based on the presence of vaginal bleeding or asymptomatic screening prior to amniocentesis.
    • MTPP cases were graded (I-IV) and outcomes such as cesarean delivery and delivery timing were analyzed.

    Main Results:

    • Ultrasonic placentography identified MTPP in 123 women, with 88 cases of grade I, 12 of grade II, 14 of grade III, and 9 of grade IV.
    • Higher grades of MTPP (III and IV) were associated with increased rates of cesarean section (7/14 and 7/9, respectively).
    • Among patients with grades III and IV MTPP, 13 out of 23 experienced premature or immature deliveries.

    Conclusions:

    • Ultrasonic placentography is effective in diagnosing midtrimester placenta previa (MTPP).
    • The presence and grade of MTPP, especially symptomatic cases, are significant predictors of adverse pregnancy outcomes.
    • Early identification of MTPP warrants close monitoring and alerts clinicians to potential complications later in pregnancy.