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[Placental Locations in Subsequent Pregnancies - A Retrospective Study]
Corina Egli1, Nina Kimmich1, Roland Zimmermann1
1Klinik für Geburtshilfe, UniversitätsSpital Zürich, Zürich, Schweiz.
Zeitschrift Fur Geburtshilfe Und Neonatologie
|June 27, 2020
Summary
Placental location in subsequent pregnancies appears unaffected by previous pregnancies. This study found no significant correlation, meaning a previous placental position cannot predict future ones.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Reproductive Health
Background:
- Placental location is critical for pregnancy and labor management.
- While recurrent placenta previa is documented, data on other placental site recurrences is limited.
- Understanding placental location patterns aids in optimizing maternal and fetal care.
Purpose of the Study:
- To determine the frequency distribution of various placental locations.
- To investigate correlations between placental locations in consecutive pregnancies.
Main Methods:
- Retrospective cohort study of 1657 women with singleton pregnancies (≥ 24 weeks).
- Included women with at least one ultrasound identifying placental location and at least two births at the hospital (2007-2016).
- Placental locations classified as anterior, posterior, fundal, lateral, or previa; excluded multiple pregnancies, abortions, fetal death, or malformations.
Main Results:
- Anterior placental location was most common, followed by posterior, fundal, lateral, and previa.
- Statistical analysis revealed no significant correlations in placental locations between subsequent pregnancies.
Conclusions:
- Placental location in one pregnancy does not appear to influence its location in future pregnancies.
- Prognostication of placental location for subsequent pregnancies based on prior ones is not supported by these findings.
