Everything you need to know about life-threatening Placenta Previa

Everything you need to know about life-threatening Placenta Previa

The complications of placenta previa are potentially harmful. For mothers, excessive bleeding could lead to death, while for babies, premature birth could lead to low birth weight and respiratory issues.


Placenta previa, also known as low-lying placenta, is a condition in which the placenta lies low in the uterus. This results in a partial or complete block of the cervical opening (the part of the lower uterus that leads to the vagina).

The placenta is the organ that acts as a life support system to the developing fetus by passing oxygen and nutrition from mother to baby. It also eliminates waste from the baby's blood.

The placenta, where the baby's umbilical cord develops from, attaches itself to the uterine wall.

If the placenta is low and blocks the cervical opening at the point of delivery, you would need to deliver via c-section.

There are three types of placenta previa.

  • Complete previa where the cervical opening is completely covered.
  • Partial previa where the placenta covers a portion of the cervix.
  • Marginal previa where the placenta extends to the edge of the cervix.

While a low-lying placenta can be diagnosed as early as 12 weeks into the pregnancy, you really don't have to work yourself up into a frenzy at this point. The condition is usually diagnosed as placenta previa only after 20 weeks.

The good news is that in almost 90% of cases, the placenta moves back up before the baby is due. As the uterus grows and stretches, the placenta moves higher in the uterus and away from the cervix.

In the event that it does not, the potential risk of severe maternal bleeding can occur. In some rare, unfortunate cases, a hysterectomy (surgery to remove the uterus) may be required to control the bleeding.

Watch this video for a more visual understanding of placenta previa.

Continue reading to learn about the signs, symptoms, and causes of placenta previa

Signs and Symptoms 

  • Bleeding. This is a warning sign not to be ignored. Once women enter their second trimester, it is extremely crucial to look out for vaginal bleeding as a sign of placenta previa. The bleeding is typically bright red and painless. It can range from light to heavy and is likely to occur when you cough, strain yourself, or have sexual intercourse. While the bleeding does usually stop on its own, it is likely to return after several days or even weeks.
  • Cramping. Though pain is uncommon, some women have experienced light to moderate cramping.

Causes and Risk Factors

The exact cause of placenta previa remains a mystery, but the following seem to be the largest contributing factors to the condition.

  • Uterine Factors. Scarring of the lining tissues of the uterus. This is usually caused by previous surgery on the uterus for reasons such as removing fibroids (benign tumors of muscular and fibrous tissues that develop in the wall of the womb).
  • Placental Factors. The position of the placenta is in direct relation to where the embryo plants itself in the uterus. Therefore, an embryo that plants itself low causes the placenta to also position itself low. Other placental factors include abnormally large placenta, such as in the case of multiple pregnancies.

In her book The Mother of All Pregnancy Books, Ann Douglas states that placenta previa occurs in “2.8 of every 1000 single pregnancies” and “3.9 out of every 1000 twin pregnancies”.

Women are most susceptible to placenta previa when they:

  • Have a history of abortion or multiple dilation and curettage (a procedure to remove tissue from inside the uterus)
  • Have had c-section (the risk increases with each subsequent c-section)
  • Have endometrial scarring (bands of fibrous scar tissue that form within the uterus) from a previous episode of placenta previa
  • Have had several children
  • Are over the age of 35
  • Do not have sufficient recovery and healing time between pregnancies
  • Smoke
  • Take cocaine

Continue reading to understand the complications associated with placenta previa


The complications that can possibly arise out of complete placenta previa are not to be taken lightly.

Singapore specialist Dr. Iswaran Subrahmanyam, Sai Association Clinic Pte Ltd, cautions that placenta previa is "a very serious complication that can possibly cause maternal death".

Similarly, America’s leading midwife Ina May Gaskin warns that complete placenta previa is “one of the most dangerous complications that can occur in any pregnancy”.

Complications women may experience are:

  • Preterm labor. If heavy or uncontrollable bleeding occurs before the due date, the baby will have to be delivered immediately by c-section. Preterm birth may put the baby at risk of conditions like low birth weight and respiratory issues.
  • Hysterectomy. Placenta previa can cause life-threatening hemorrhaging during and after delivery. This would call for a blood transfusion. In up to 10% of complete placenta previa cases, a hysterectomy may be required to control bleeding.

Continue reading to know when to call the doctor

When to Call the Doctor

Bleeding would be the key indication to call your doctor. Even if the bleeding seems little or harmless, it is always best to err on the side of caution and get immediate medical attention.

From his 18 years of experience in Obstetrics & Gynecology, Dr. Iswaran says that he “cannot emphasise enough the importance of being alert, to ensure that your doctor is contactable at all times” and “never to delay seeking immediate medical help” in the case of bleeding.

Time is everything. Dr. Iswaran spoke of the devastating experience of losing one of his patients, an ambulance driver’s wife, who succumbed to excessive bleeding caused by the condition and lost her life en route to the hospital.

Another of his patients, a nurse, managed to pull through after a hysterectomy was performed. She was given 19 pints of blood.

Continue reading to learn how placenta previa is tested for and diagnosed


Whether or not there is vaginal bleeding, your gynecologist will do an ultrasound during your 16 or 20 week check up. This is done to determine the position of your placenta. In order to ensure that you are diagnosed accurately, it is likely that you will have an abdominal and transvaginal scan.

During the scan, extra precaution will be taken to ensure that the wand-like device inserted into your vagina will not disrupt your placenta. Your doctor will avoid performing routine vaginal examinations on you if placenta previa is suspected. This is to reduce any possible risk of heavy bleeding.

placenta previa An ultrasound is used to diagnose and monitor placenta previa.

If you are diagnosed with or suspected to have placenta previa, your gynecologist will monitor you very closely for the rest of your pregnancy.

Additional ultrasounds will be performed to check on the position of your placenta, but pelvic and vaginal examinations will be avoided as much as possible. Your baby's heartbeat will also have to be closely monitored.

As an expecting mother, being diagnosed with placenta previa can come across as a rude shock and cause great anxiety. It is however, crucial to remain calm and optimistic.

Continue reading to learn how placenta previa is treated

Treatments and Drugs

Unlike an infection or illness, placenta previa is not something that you can typically cure by administering medication. You might be given medication to prevent preterm labor and, ideally, to help your pregnancy to progress to the 36th week.

If it is likely that you have to deliver earlier than your due date, you may be asked to take steroid injections to strengthen your baby's lungs. You will also be asked to closely follow these preventive measures:

  • Avoid any kind of strenuous exercise or activities
  • Avoid sexual intercourse
  • Avoid pelvic examinations
  • No lifting of heavy objects
  • Bed rest
  • Hospital bed rest (for heavy bleeding)
  • Blood transfusion (if too much blood has been lost)
  • No douching (washing or cleaning out the vagina with water or other mixtures)

If the bleeding persists or your baby starts showing any signs of distress, the only solution would be an emergency c-section. This is crucial for the safety of you and your child.

If the bleeding continues after your baby is born, and if your life is at risk, you may require a hysterectomy.

placenta previa If you're diagnosed with placenta previa, the most important thing to do is to take it easy to avoid complications.

Lifestyle and Home Remedies

The most important thing to do if diagnosed with placenta previa is to take it easy.

If being idle is not your cup of tea, you may want to think again. When your precious bundle of joy arrives, idle time will be a thing of the past.

For the stay-at-home moms, especially those with toddlers or older children, you might want to look into arrangements for an extra hand. You could consider temporarily staying with your parents or hiring a helper.

It is crucial that you do not exert or strain yourself in any way. And that includes not carrying your older children.

So really, slow down, grab a cup of tea, and rest in bed with a good book for company. Reading will help to ease you off some of the anxiety and stress that you might be going through.

Continue reading to find out how to prevent or minimize the risks associated with placenta previa


While there is no fail proof method of preventing placenta previa, knowing and understanding the risks may help to lower the odds of it occurring.

For example, smoking and the consumption of cocaine greatly increase the chances for placenta previa. If you have any such addiction during, or when planning a pregnancy, seek help immediately.

You may also wish to consider factors such as your age and how many children you've already had. Especially if you have undergone any kind of surgery on your uterus, it would be a good idea to speak to a gynecologist before trying to conceive.

Forward planning is ideal in any situation.

While it is definitely not a condition that you would take lightly, do not let it take too much of a toll on you. Most importantly, take the necessary precautions, take the best possible care of yourself, go for frequent check ups and try your best to stay positive!

Republished with permission from: theAsianparent

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Beverly Burgess

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