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Updated: Feb 3, 2026
06:54
Ex Vivo Perfusion of the Rodent Placenta
Published on: May 30, 2019
10.5K
Imaging of Placenta Accreta Spectrum
Eliza M Berkley1, Alfred Abuhamad
1Eastern Virginia Medical School, Norfolk, Virginia.
Clinical Obstetrics and Gynecology
|October 20, 2018
Summary
Placenta accreta spectrum (PAS) is abnormally invasive placental implantation, posing severe hemorrhage risks. Key risk factors include prior cesarean and current placenta previa, with ultrasound aiding early detection.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Diagnostic Imaging
Background:
- Placenta accreta spectrum (PAS) involves abnormal placental invasion into the uterine myometrium.
- This condition carries a high risk of severe maternal hemorrhage, morbidity, and mortality.
- Prior cesarean section and current placenta previa are the most significant risk factors.
Purpose of the Study:
- To outline the clinical presentation and risk factors for PAS.
- To detail the ultrasound features and markers of PAS across all trimesters of pregnancy.
Main Methods:
- Review of clinical presentations and known risk factors for PAS.
- Detailed examination of ultrasound findings specific to PAS in each trimester.
Main Results:
- Most patients with PAS are asymptomatic, but some may experience vaginal bleeding or cramping.
- Ultrasound plays a crucial role in identifying specific markers throughout pregnancy.
- Risk factors like previous C-sections and placenta previa are strongly associated with PAS.
Conclusions:
- Early identification of PAS is critical for managing potential complications.
- Understanding risk factors and recognizing ultrasound markers are essential for timely diagnosis.
- This review provides a comprehensive guide to PAS diagnosis using ultrasound.
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