Placental Adhesion: Why Does It Occur? Causes, Probability of Occurrence, and Treatment Method

Womb Fertility and Pregnancy

Mothers during pregnancy become joyful and excited as the expected birth date approaches, but worry at the same time about giving birth safely.

Although you do not have to worry more than necessary, you may be able to resolve anxiety if you understand the risks associated with childbirth to a certain extent.

One of the risks of childbirth is adhesion placenta.

Although the probability of placental adhesion is not high, it is better to learn about it because it is deeply related to pre-placenta and caesarean section.

This article will explain the cause of the adhesion placenta, the treatment method, and the probability of occurrence/recurrence.

What is Adhesion Placenta (placental adhesion)

Adhering placenta is a state where the placenta sticks to the uterus and it is difficult to peel off.

The placenta is an important organ that connects a baby and a mother, and it is discharged naturally as babies are born and becomes unnecessary.

In other words, childbirth is done safely only after the baby is born and the placenta is discharged.

Even women who have experienced pregnancy and childbirth may not have a chance to see their placenta, but the placenta that wraps up a normal baby is generally about 500g in size.

Imagine 500g of meat sold at the supermarket meat department, and you can see how big it is.

It is a very risky situation that big organs like the placenta are not discharged from the body.

Why does it happen?

The adhesion placenta is affected by the membrane called the decidual membrane formed in the uterus.

The decidua is a membrane for the placenta that falls off from the uterus, but if this membrane is not formed, it is said that adhesion placenta will occur.

The main reasons why decidua are not formed or not sufficiently formed are influences of pre-placenta, artificial abortion, endometriosis, and the congenital nature of the uterus.

Treatment and Prevention Method

Adhesion placenta is basically a symptom that cannot be found unless you give birth.

In the unlikely event that it can be foreseen before childbirth, it is almost impossible to treat.

When the baby comes out and the placenta, which should naturally be discharged, does not readily come out, the case is treated as adhesion placenta.

The treatment of the adhesion placenta varies greatly depending on the condition of the mother and the amount of bleeding that occurs.

A typical treatment method is removing surgical adhesions when the adhesion placenta is found after giving birth, and placing it under observation to deal with it at a later date.

If adhesions are light, the doctor puts his hand directly into the uterine opening and takes out the placenta after giving birth. If the adherent placenta is severe, the uterus itself may be removed.

Probability of Adhesion Placenta

Adhesion placenta is dangerous, but there is a low probability of it happening – 1 case in 20 thousand.

However, the factors that increase this probability are the pre-placenta and past caesarean section.

When the placenta is located lower than usual and it covers the uterine mouth where the baby is born is called placenta previa.

When diagnosed as a pre-placenta, in many cases it becomes a birth by caesarean section. And it is said that placenta previa and adhesion placenta often merge.

Also, if you give birth through a caesarean section in the past, and you have experienced surgery in the uterus, it may increase the possibility of becoming an adhesion placenta.

The possibility of adhesion placenta is rather low in the first place, but it is better to know your condition beforehand. If you are diagnosed as a pre-placenta, being aware of the conditions will make it possible for you to have a clear grasp of your situation and deal with it accordingly.

Adherence Placenta Recurrence

There are also those who feel uneasy that adhesion placenta will happen in the second pregnancy after it happens to the firstborn childbirth.

Unfortunately, it is not possible to say whether or not adhesion placenta will repeat in the delivery of the second or third child. We encourage you to consult doctors regularly.

Since adhesion placenta itself is a rare case, there may be various opinions from the doctor, but if you have experienced caesarean section or the operation of the womb, it is said that the probability will rise, but check with the doctor to make sure and anticipate problems if there are any, and prepare for them.


The adhesion placenta is a dangerous condition that may possibly remove the uterus in the worst case. Although it may make you anxious, there is no way to prevent it during pregnancy.

However, regardless of adhesion placenta pregnancy and childbirth there is life to look forward to. In order to protect the lives of mothers and babies, doctors and midwives work together to ensure safe delivery.

There is no need to stress unnecessarily, but if risk arises, listen to the explanation of the doctor and the midwife and judge calmly. It would be best to avoid worrying and have a healthy and happy baby.

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