Is Your Placenta Low-Lying? (Placenta Previa) – Let's Learn About It! | Nirogi Lanka

If you are expecting a baby, it is completely normal to feel anxious about even small changes. It is especially natural to feel concerned if you experience any vaginal bleeding during pregnancy. One term you might encounter during this time is 'Placenta Previa.' Please don't be alarmed; at Nirogi Lanka, we are here to explain this to you simply and clearly.

What exactly is ‘Placenta Previa’?

Let’s start with the basics. As you know, while your baby is in the womb, they receive all the necessary nutrients, oxygen, and blood through the 'placenta.' Think of the placenta as a nourishing pouch that develops inside your uterus, connected to your baby via the umbilical cord. Typically, as your pregnancy progresses—especially in the final trimester (weeks 28 to 40)—the placenta moves toward the top of the uterus. This creates a clear path for your baby to be delivered naturally through the birth canal. In the case of ‘Placenta Previa,’ however, the placenta does not move upward. Instead, it remains in the lower part of the uterus, partially or completely covering the cervix. In simple terms, the placenta is essentially blocking the exit path for your baby.

What are the types of ‘Placenta Previa’?

There are different classifications for this condition:

• Marginal placenta previa: The placenta is situated at the edge of the cervix. It touches the rim but does not cover the opening. In many cases, as the pregnancy progresses, the uterus grows and the placenta may naturally move away from the cervix.
• Partial placenta previa: The placenta partially blocks the opening of the cervix.
• Complete or total placenta previa: In this case, the placenta completely covers the cervix, fully blocking the path to the birth canal. This type is less likely to resolve on its own as the pregnancy continues.

Regardless of the type of Placenta Previa, you may experience vaginal bleeding during pregnancy or labor. Due to the risk of bleeding, doctors often recommend a Caesarean section (C-section) for delivery.

How common is this condition?

Placenta Previa occurs in approximately 1 out of every 200 pregnancies. Doctors usually detect it during a routine ultrasound scan in the second trimester.

What is the difference between ‘Placenta Previa’ and ‘Placental Abruption’?

While both can cause bleeding during pregnancy, they are very different conditions. In ‘Placenta Previa,’ the placenta is simply positioned over the cervix, but it remains securely attached to the uterine wall. In contrast, ‘Placental abruption’ occurs when the placenta separates or detaches from the uterine wall. While both result in vaginal bleeding, the underlying causes and implications are distinct.

Does ‘Placenta Previa’ mean I have an ‘Anterior Placenta’?

No, these are not the same. Your placenta can form anywhere in your uterus. An ‘Anterior placenta’ means the placenta has attached to the front wall of your uterus, facing your abdomen. Think of it like having a cushion between the baby and your tummy; this typically does not cause the same complications as Placenta Previa.

What are the symptoms of ‘Placenta Previa’?

Common symptoms to watch for include:

• Bright red vaginal bleeding. This usually begins in the second half of your pregnancy. The bleeding may stop and start, and sometimes it can recur days later.
• Mild abdominal or back pain or sensation of contractions.

The amount of bleeding varies from person to person. Often, this bleeding occurs without any pain at all.

Why does ‘Placenta Previa’ happen?

There is no single known cause for why this happens. However, there are certain risk factors related to your health history or lifestyle that may increase the likelihood.

What are the risk factors for ‘Placenta Previa’?

Factors that may contribute include:

• Smoking or using substances like cocaine.
• Being 35 years of age or older.
• Having had multiple previous pregnancies.
• Carrying twins, triplets, or more.
• Having had previous uterine surgery, such as a prior Caesarean section (C-section) or a D&C (dilation and curettage) procedure.
• A history of uterine fibroids.

What are the potential complications of ‘Placenta Previa’?

If you are diagnosed with Placenta Previa, your doctor will monitor you closely to manage potential risks to you and your baby. Potential complications for you:

• Bleeding: Excessive bleeding can occur during pregnancy, during labor, or immediately after delivery.
• Early birth: If you experience heavy bleeding, your doctor may need to perform an emergency C-section before you reach full term.
• Blood loss: Severe bleeding can lead to anemia, low blood pressure, pale skin, or difficulty breathing.
• Placenta accreta: This occurs when the placenta attaches too deeply into the uterine wall, which can cause significant bleeding after birth.
• Placental abruption: The placenta may detach prematurely, reducing oxygen and nutrient supply to the baby.

Potential complications for your baby:

• Premature birth: If an emergency C-section is required due to bleeding, your baby might be born prematurely.
• Low birth weight: Babies born early may struggle with temperature regulation or weight gain.
• Respiratory issues: If the lungs have not fully matured, the baby may have difficulty breathing after birth.

Important: Please do not feel frightened by these complications. Medical professionals are highly experienced in managing this condition. They will provide you with the necessary care and advice to keep you and your baby safe.

Can I have ‘Placenta Previa’ without bleeding?

Yes, it is possible. Some individuals with Placenta Previa do not experience any vaginal bleeding. However, you might occasionally feel mild abdominal or back pain. If you experience any symptoms, always contact your medical provider or local emergency services immediately.Therefore, if you experience any vaginal bleeding or lower abdominal pain during pregnancy, please consult your doctor immediately.

Why does Placenta Previa cause bleeding?

There are two primary reasons for this, both related to how your body prepares for the birth of your baby. 1. You likely know that the cervix acts as the gateway between your uterus and the birth canal. As you approach the final stages of pregnancy, your cervix begins to thin (efface) and open to prepare for labor. If the placenta is positioned over the cervix, this thinning process can trigger bleeding. 2. During labor, the cervix dilates (opens) to allow the baby to move down the birth canal. As the cervix opens, the blood vessels connecting the placenta to the uterine wall can tear, leading to bleeding.

Can Placenta Previa lead to a miscarriage?

A miscarriage is defined as the loss of a pregnancy before 20 weeks. Doctors typically identify placenta previa through a routine ultrasound scan performed after the 20-week mark. Consequently, it is extremely rare for placenta previa to cause a miscarriage.

How is Placenta Previa diagnosed?

In most cases, doctors identify this condition during a routine ultrasound scan around the 20th week of pregnancy. Occasionally, it is discovered during examinations performed after symptoms like vaginal bleeding occur. Your doctor will then conduct follow-up scans to monitor the position of the placenta.

What diagnostic tests are used?

Your doctor will primarily use ultrasound scans to check for placenta previa.

• Transvaginal ultrasound: During this procedure, the doctor inserts a small probe (transducer) into the vaginal canal to examine your baby, the placenta, and the cervix. This provides a very clear view of the placental position.
• Abdominal ultrasound: The doctor applies gel to your abdomen and uses a transducer to scan the area. This also allows the doctor to evaluate the position of your baby, the placenta, and the cervix.

Both scans produce images that can be viewed on a monitor. Your doctor will interpret these results to determine how much of the cervix is covered by the placenta and what steps should be taken next.

How is Placenta Previa treated?

The primary goal is to maintain your pregnancy as close to your due date as possible. If bleeding persists, a C-section is often the safest way to deliver your baby. Treatment for placenta previa depends on several factors:

• The severity of your bleeding.
• The gestational age of your baby.
• The position of the placenta and the baby.
• The overall health of you and your baby.

If your doctor discovers this in the early second trimester, the condition may resolve on its own. As the uterus grows, the placenta may move upward. However, if discovered later in pregnancy, the likelihood of the placenta shifting upward is reduced. If the placenta is near the cervix or only partially blocking it, and you are not bleeding, your doctor may advise the following:

• Avoid strenuous activities such as running, lifting heavy objects, or intense exercise.
• Practice bed rest at home.
• Avoid sexual intercourse, the use of tampons, or douching.
• Attend frequent doctor visits and ultrasound scans.

If the placenta previa is moderate to severe, or if you experience frequent bleeding, other treatments may be required:

• Bed rest in the hospital.
• Medication to prevent preterm labor.
• Steroid shots to help your baby's lungs develop faster.
• Blood transfusions if you experience significant blood loss.
• An emergency C-section if the bleeding becomes uncontrollable.

Does Placenta Previa resolve on its own?

Yes, if detected in the second trimester, it can resolve as the placenta moves upward. As the uterus grows in the third trimester, there is still potential for the placenta to shift. However, as the pregnancy progresses, if the cervix remains blocked, it is less likely to resolve naturally. Your doctor will continue to perform scans to check if the condition has cleared before birth.

Can I reduce the risk of developing Placenta Previa?

There is no known way to prevent placenta previa, and there are no medical procedures or surgeries to "fix" the placement of the placenta. However, you can manage controllable risk factors, such as avoiding smoking and the use of illicit substances like cocaine. Once your doctor confirms this condition, there are ways to minimize the risk of vaginal bleeding.

What should I expect if I have Placenta Previa?

Your treatment will be tailored to your specific situation. However, many individuals can expect:

• Frequent monitoring during the second and third trimesters. Your doctor will track the position of the placenta and observe for any changes in symptoms.
• Restrictions or modifications to physical activities, including exercise and sexual activity.
• Blood tests to monitor your blood counts after delivery.

Will my baby be born prematurely if I have Placenta Previa?

It is possible. Your doctor will decide whether an early delivery is necessary based on the amount of bleeding, the placenta's position, and your baby's gestational age. Around 36 weeks, delivering the baby early may be the safest option for both you and your child. In some cases, mothers may carry their baby to 40 weeks, or full term.

Can I have a vaginal delivery if I have Placenta Previa?

If you have marginal placenta previa (meaning the placenta is near the cervix but not completely blocking it), your doctor may determine that a vaginal delivery is possible. However, this carries a risk of bleeding and can be dangerous. Your doctor will discuss the safest delivery method for you.

Will I definitely require a C-section if I have Placenta Previa?

Yes, in most cases where the placenta is covering any part of the cervix, a C-section is the safest delivery method. Attempting a vaginal delivery can cause severe hemorrhaging. Your doctor will typically schedule your C-section in advance. However, if your bleeding becomes severe at any point, an emergency C-section may be necessary.

Can Placenta Previa cause birth defects in my baby?

It is very rare for Placenta Previa to cause birth defects. However, if your doctor determines that delivering your baby early is the safest course of action, your baby may be born prematurely. Premature birth can lead to complications such as low birth weight and respiratory difficulties.

Will I have Placenta Previa again?

If you have had Placenta Previa in a previous pregnancy, there is a small risk—about 2%—that it may recur. If you become pregnant again, be sure to inform your doctor so they can review your medical history.

Does Placenta Previa affect my fertility?

Placenta Previa does not affect your ability to conceive in the future. However, there remains a small risk of developing the condition again in subsequent pregnancies.

What questions should I ask my doctor?

Your doctor is there to answer your questions and help you prepare for managing Placenta Previa. Here are some questions you might want to ask:

• Is my baby at risk? Am I at risk?
• What are my treatment options?
• How will I know if my Placenta Previa has resolved?
• Should I restrict any of my activities?
• Is it possible to deliver the baby now?
• What complications should I watch for?
• Will I need more ultrasounds or other tests?
• What symptoms should prompt me to go to the hospital?

What questions might my doctor ask me?

• When did you first notice the bleeding?
• How heavy is the bleeding?
• Is the bleeding constant, or does it come and go?
• Are you experiencing any abdominal pain or cramping?
• Have you had any complications in previous pregnancies?
• Have you had any prior uterine surgeries?
• Do you smoke or use substances like cocaine?
• Do you have someone to help care for you if bed rest is required?

When should I contact my doctor?

If you experience any vaginal bleeding, abdominal pain, or cramping during your pregnancy—especially in the second half—contact your doctor immediately.

When should I go to the Emergency Room (ER)?

If you experience heavy vaginal bleeding, seek emergency medical care immediately. Heavy bleeding can pose serious risks to both you and your baby.

Can I exercise with Placenta Previa?

Your doctor will likely advise you to limit certain activities, such as strenuous exercise, squatting, jumping, or lifting heavy objects, as these can trigger bleeding. It is best to discuss your daily activities with your doctor to make any necessary adjustments.

Can I have intercourse if I have Placenta Previa?

Most doctors advise avoiding sexual intercourse if you have Placenta Previa. It is also best to avoid anything that could cause bleeding or uterine contractions, such as using tampons, douching, or inserting anything into the vagina.

Take-Home Message

Placenta Previa is a manageable condition. Many mothers with this diagnosis go on to deliver healthy babies. If you follow your doctor's guidance, you can ensure a safe delivery. Do not hesitate to reach out to your doctor if you experience any bleeding or discomfort during your pregnancy. The safety of you and your baby is the top priority. Low-lying placenta, Placenta Previa, pregnancy bleeding, C-section, cervix, pregnancy complications, ultrasound scan