Placenta previa, placenta accreta, and vasa previa

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Perinatology

Background:

• Placenta previa, placenta accreta, and vasa previa are critical causes of antepartum and intrapartum hemorrhage.
• Risk factors for placenta previa include prior cesarean delivery, smoking, and advanced maternal age.
• The incidence of placenta accreta is increasing, linked to higher cesarean delivery rates.

Purpose of the Study:

• To review the diagnosis and management of placenta previa, placenta accreta, and vasa previa.
• To highlight the importance of prenatal diagnosis and multidisciplinary management.
• To inform optimal delivery strategies for these high-risk obstetric conditions.

Main Methods:

• Review of diagnostic modalities, including transvaginal ultrasonography.
• Discussion of management strategies, including delivery methods and anesthesia.
• Emphasis on prenatal diagnosis and planned peripartum care.

Main Results:

• Transvaginal ultrasound is key for diagnosing placenta previa; delivery is typically by cesarean.
• Placenta accreta management involves prenatal imaging and multidisciplinary planning, often requiring hysterectomy.
• Vasa previa diagnosis via ultrasound allows for timely cesarean delivery before membrane rupture to prevent fetal demise.

Conclusions:

• Effective management of placenta previa, accreta, and vasa previa relies on accurate prenatal diagnosis and appropriate delivery planning.
• Cesarean delivery is often indicated, particularly for complete placenta previa and placenta accreta.
• Vigilance and timely intervention are essential to minimize maternal and fetal morbidity and mortality.