Placenta previa

Understanding what raises the likelihood of placenta previa helps in early identification and prevention. Contributing factors include:

Older Maternal Age

• Women over 35 may face higher risk due to changes in uterine conditions.

History of Placenta Previa

• Those who had it in a previous pregnancy are more likely to experience it again.

Smoking

• Smoking during pregnancy raises the risk by approximately 2.6 times compared to non-smokers.

Multiple Gestations

• Carrying more than one baby or having had multiple pregnancies increases risk.

Previous Abortions

• Abortions may cause uterine scarring, impacting where the placenta attaches in future pregnancies.

Uterine Fibroids

• Benign uterine growths can interfere with normal placental placement.

Previous Uterine Surgeries

• Surgeries like C-sections or dilation and curettage (D&C) procedures can contribute to abnormal placental attachment.

Assisted Reproductive Technologies (ART)

• Techniques like IVF may influence the site of placental implantation, heightening the risk.

Existing Uterine Scars

• Scar tissue in the uterus may attract placental attachment, potentially resulting in coverage of the cervix.

Preeclampsia

• This condition, involving high blood pressure and organ stress, can sometimes impact placental function.

Use of Certain Recreational Drugs

• Substances like cocaine can impair proper placental development, increasing the chances of placenta previa.

Placenta previa is typically identified during a standard ultrasound, often around the 20th week of pregnancy. It may be detected during routine prenatal screening or after the occurrence of vaginal bleeding.

The diagnostic process generally involves:

Medical History

Collecting a detailed medical history is essential, as it helps uncover risk factors that might suggest the presence of placenta previa.

Physical Examination

A speculum examination may be done to evaluate vaginal bleeding. However, digital (internal) exams are avoided due to the risk of triggering heavy bleeding by disturbing the placenta.

Imaging Tests

• Ultrasound: The primary, non-invasive method for identifying placenta previa, offering clear imaging of the placenta’s position in relation to the cervix.
• Transvaginal Ultrasound: This procedure involves inserting a small device into the vagina for more accurate imaging of the uterus and cervix, making it critical for precise diagnosis.
• MRI: Magnetic Resonance Imaging may be used if ultrasound findings are unclear or further confirmation is needed.

While placenta previa cannot be fully prevented, lowering risk factors such as quitting smoking and avoiding illicit drug use can help reduce the chances of developing the condition.

Specialist to Consult

Medical professionals who manage and diagnose placenta previa include:

• Obstetricians – Experts in pregnancy, childbirth, and postnatal care.
• Gynecologists – Specialists in female reproductive health conditions.

They play an important role in evaluating, monitoring, and offering treatment options for placenta previa during pregnancy.

When to Seek Medical Help

Contact your healthcare provider immediately if you experience:

• Persistent vaginal bleeding after mid-pregnancy
• Abdominal cramps or uterine contractions

Although there is no cure for placenta previa, the main aim of treatment is to minimize bleeding and prolong the pregnancy safely.

If the placenta is only slightly overlapping the cervix and there are no symptoms or active bleeding, your doctor might advise:

• Avoiding strenuous activities like heavy lifting and intense exercise
• Home-based bed rest
• Pelvic rest: avoiding intercourse, tampon use, and douching
• Frequent monitoring through checkups

For more serious cases or recurring bleeding, additional treatments may include:

• Hospital-based bed rest
• Medications to prevent premature labor, such as:
• Indomethacin
• Nifedipine
• IV Magnesium sulfate to delay labor
• Betamethasone injections to accelerate lung development in the baby
• Rhogam injection for Rh-negative mothers to prevent blood group incompatibility
• Blood transfusions in the event of excessive bleeding

In emergencies where bleeding cannot be controlled, an immediate cesarean delivery may be necessary.

Placenta previa can lead to complications affecting both the baby and the mother.

Fetal Risks:

• Premature Delivery: Around 5% of cases may lead to early birth before 37 weeks.
• Intrauterine Growth Restriction (IUGR): Inadequate placental blood flow can hinder fetal development.
• Increased Infant Mortality: There's a heightened risk of neonatal death, especially within the first month after birth.

Maternal Risks:

• Heavy Bleeding: May occur before, during, or after childbirth, potentially requiring transfusions.
• Placenta Accreta: A serious condition where the placenta embeds too deeply into the uterus, increasing bleeding risks after delivery.
• Cesarean Delivery: Often necessary unless the placenta moves away from the cervix before labor.

Once diagnosed, managing placenta previa at home involves steps to control bleeding and ensure safety:

• Bed Rest: Limiting physical exertion helps reduce the risk of further bleeding.
• Pelvic Rest: Avoid all activities that could trigger bleeding, including sex and internal exams.
• Regular Monitoring: Stay alert to any signs of bleeding or contractions and contact your doctor as needed.
• Stay Hydrated: Drinking enough fluids is important for overall well-being during pregnancy.

Managing placenta previa involves patience and emotional readiness. Most of the time, it’s about waiting and monitoring the condition until delivery.

Here are a few helpful tips:

Talk to a Mental Health Professional

• Seeing a therapist can provide support in coping with the emotional impact of a high-risk pregnancy.

Lean on Family and Friends

• Emotional support from loved ones can be immensely comforting and helpful in managing day-to-day challenges.

Stay in Touch with Your Doctor

• Report any new symptoms, particularly bleeding or cramping, to your healthcare provider without delay.

Prepare for Early Delivery

• Since early delivery is common in placenta previa, it’s helpful to be mentally and practically prepared.

Expect a C-section

• Be ready for a cesarean section if the placenta remains near or over the cervix close to your due date.

Have Your Hospital Bag Ready

• Pack essentials ahead of time in case an unexpected hospital stay becomes necessary.