O69.4 Labor and delivery complicated by vasa previa

Name of the Condition

• Labor and delivery complicated by vasa previa

Summary

This condition occurs when fetal blood vessels traverse the fetal membranes and are positioned over the internal cervical os, potentially leading to fetal hemorrhage during labor or delivery. It is a rare but serious obstetric complication that requires prompt recognition and management to prevent adverse outcomes.

Causes

Vasa previa typically results from abnormal placental or fetal vessel development, such as velamentous cord insertion or placental succenturiate lobes. These vessels may cross the cervical os, placing them at risk of rupture when membranes rupture or during labor.

Risk Factors

• Velamentous cord insertion.
• Placental succenturiate lobes.
• Multiple gestations (especially monochorionic twins).
• Low-lying placenta or placenta previa.
• Prior uterine surgery or procedures.

Symptoms

• Painless vaginal bleeding during labor or after membrane rupture.
• Sudden fetal distress or heart rate changes (e.g., decelerations, bradycardia).
• Maternal reports of bleeding without associated pain.

Diagnosis

Diagnosis is often made prenatally via ultrasound, which may identify vessels crossing the cervical os. During labor, abnormal fetal heart rate patterns or visible bleeding may prompt further evaluation, including vaginal examination or ultrasound confirmation.

Treatment Options

Management depends on gestational age and fetal status. Interventions may include immediate cesarean delivery to prevent fetal hemorrhage, especially if bleeding or distress occurs. Close fetal monitoring and readiness for emergency delivery are critical.

Prognosis and Follow-Up

With prompt diagnosis and delivery, outcomes can be favorable, but fetal mortality risk is significant if hemorrhage occurs. Post-delivery, maternal recovery is typically uncomplicated, but follow-up may include monitoring for bleeding or infection.

Complications

• Fetal hemorrhage and hypoxia.
• Fetal death or neurological injury.
• Maternal hemorrhage or infection.

Lifestyle & Prevention

Routine prenatal care, including ultrasound screening for high-risk pregnancies, may aid early detection. Avoiding activities that could rupture membranes prematurely (e.g., strenuous exercise) is advised in high-risk cases.

When to Seek Professional Help

Seek immediate care if painless vaginal bleeding occurs during pregnancy or labor, or if fetal movement decreases suddenly. Prompt evaluation is essential to assess for vasa previa or other complications.

Tips for Medical Coders

Document the presence of fetal vessels over the cervical os, confirmed by ultrasound or clinical findings. Include details of bleeding, fetal status, and delivery method. Ensure documentation supports the diagnosis and management of this high-risk condition.