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Related Experiment Video

Updated: Jul 19, 2025

Vein Interposition Model: A Suitable Model to Study Bypass Graft Patency

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Published on: January 15, 2017

Vasa Previa.

Yinka Oyelese¹, Ali Javinani, Alireza A Shamshirsaz

¹Department of Obstetrics & Gynecology, Beth Israel Deaconess Medical Center/Harvard Medical School and Maternal Fetal Care Center at Boston Children's Hospital/Harvard Medical School, Boston, Massachusetts.

Obstetrics and Gynecology

|August 17, 2023

Summary

This summary is machine-generated.

Prenatal diagnosis of vasa previa (unprotected fetal vessels) via ultrasonography significantly improves perinatal outcomes. Early detection and planned cesarean delivery are crucial for preventing fetal exsanguination and improving survival rates.

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Area of Science:

Perinatal Medicine
Maternal-Fetal Medicine
Obstetrics

Background:

Vasa previa, characterized by unprotected fetal vessels near the cervix, historically led to high perinatal mortality due to fetal exsanguination upon membrane rupture.
Advances in ultrasonography have enabled prenatal diagnosis, transforming management and outcomes.

Purpose of the Study:

To review the epidemiology, pathophysiology, natural history, diagnosis, and management of vasa previa.
To highlight the impact of prenatal diagnosis on perinatal outcomes.
To discuss current and innovative treatment strategies for vasa previa.

Main Methods:

Review of existing literature, including cohort studies and expert opinion, due to the rarity of vasa previa.
Analysis of risk factors associated with vasa previa.
Examination of diagnostic modalities and management protocols.

Main Results:

Prenatal diagnosis of vasa previa allows for planned cesarean delivery, dramatically reducing perinatal mortality.
Undiagnosed vasa previa during labor and membrane rupture remains associated with dismal outcomes.
Identified risk factors include placenta previa, velamentous cord insertion, and multifetal gestations.

Conclusions:

Ultrasonography-based prenatal screening is essential for at-risk pregnancies to decrease vasa previa-related mortality.
Management strategies rely on observational data and expert consensus.
Timely diagnosis and intervention are critical for improving fetal survival in vasa previa cases.