Is the day, or 'due date', when you'll be holding your baby in your arms? Maybe it's already past. As you wait impatiently, excitedly, and a little scared for your baby to arrive, has your doctor ever told you about a 'membrane sweep'? Many mothers get a little nervous when they hear this name. It's normal for questions like "What is it?" "Will it hurt?" "Will something happen to the baby?" to come to mind. So don't worry. Today, we'll talk about it all in a very simple way that you can understand.
What exactly is a 'membrane sweep'?
Simply put, this is a small procedure that the doctor does to help the labor start naturally. Imagine, your baby is inside the uterus inside a bag full of water, right? We call this the 'amniotic sac'. This bag of water is attached to the wall of the uterus.
During a membrane sweep, the doctor inserts a gloved finger through your vagina and into your cervix, slightly separating the bag of waters from the uterine wall. It's like lifting a corner of a poster on a wall. This is done very delicately.
Now you might be thinking, "What will happen if I do that?"
As your water breaks and the uterine lining is pushed apart, your body naturally produces chemicals called prostaglandins . These are the main factors that help your cervix gradually soften, thin, and dilate . In other words, they give you a little push to start the first steps of labor.
But one thing to remember is that doing this is not a 100% guarantee that labor will start that night. However, in most cases, this is a good way to start labor.
Why is this being done? Who is this suitable for?
Usually, if you are past 39 or 40 weeks of pregnancy, meaning your baby is fully developed but you haven't started labor yet, your doctor may suggest this method. This is done as an attempt to get labor started naturally, especially before medical induction.
But this is not possible for everyone. To perform a membrane sweep , your cervix must be slightly open (dilated). If your cervix is completely closed and hard, the doctor cannot insert a finger to perform this procedure.
Let's see from the table below who is suitable for this and who is not.
| Who is suitable for 'membrane sweep'? | People who are not suitable for 'membrane sweep' |
|---|---|
| Those who have completed or exceeded 39 weeks of pregnancy. | Those who are scheduled to have a cesarean section (C-section). |
| Those whose cervix is at least 1 or 2 centimeters dilated. | Those whose cervix is completely closed. |
| Those who have had a healthy pregnancy without other complications. | Those with conditions such as placenta previa. |
| Those who have tested negative for Group B strep. | People with infections such as active genital herpes. |
What is the process of performing a 'membrane sweep'?
This procedure can usually be done on the same day as your prenatal appointment with your doctor. It doesn't require much preparation.
- First: You will be asked to remove your clothes and lie down on the examination table, as you would normally do for a pelvic exam.
- Second: The doctor will first examine your cervix. How open it is, how soft it is. This is also called a "favorable cervix," which means whether the cervix is in a good position to perform a 'sweep.' If the cervix is too tight or closed, this will be difficult to do and may not work.
- Third: If the cervix is in the right position, the doctor will insert one or two gloved fingers through the cervix and rotate the fingers in a circular motion around the opening of the cervix. This movement will separate the previously mentioned bag of waters from the uterine wall.
This entire process only takes a few minutes, so there's nothing to worry about.
Does this hurt a lot?
This is a problem that many mothers have. To be honest, the pain varies from person to person. Some people feel only a little discomfort compared to a regular vaginal exam. Others may feel a little sharper, like a period. But this pain only lasts for a few minutes during the 'sweep'. After that, the sharp pain goes away.
What to expect after the 'sweep'?
After the 'sweep' is done, you can go home. However, you will notice some changes in your body within the next 24-48 hours. These are normal, so don't worry.
- Cramping: This is the most common symptom. There may be a slight cramping or pain in the lower abdomen for a day or two, similar to menstrual cramps.
- Irregular contractions: Sometimes you may feel a tightening sensation in your abdomen, similar to cramping. However, these may not come continuously or regularly. They may also go away after a while.
- Light bleeding or brown discharge (Spotting): Since the cervix is a delicate area, a few small drops of blood or a brown discharge may come out when you touch it with your finger. This is normal. However , if the bleeding is very heavy (so much that a pad gets wet within an hour), you should inform your doctor immediately.
How successful is this? What are the advantages and disadvantages?
It's hard to say how soon labor will start after a membrane sweep. Every pregnancy and every body is different. Some studies have shown that about 50% of women who have a membrane sweep will start labor within a week.
Main advantages:
- Being a natural method: It helps to initiate labor by stimulating the body's own hormones, without the use of medications or other artificial substances.
- Possibility of avoiding medical induction: In most cases, if this is successful, it is possible to avoid causing labor pain by administering saline and medication.
- Psychological relief: After 40 weeks, many mothers are physically and mentally exhausted. With the desire to see the baby soon, getting a little help in this way is a great psychological relief.
Disadvantages or risks:
- Discomfort and pain: As mentioned earlier, this process can be a bit uncomfortable.
- Bleeding: While light bleeding is normal, very rarely there may be a little more bleeding.
- Water breaking: There is a small chance that your water will break during the sweep. However, this is not a big deal since you are already pregnant. If your water breaks, you should go into labor within 24 hours.
- False labor: Sometimes irregular contractions start, and you may think you're in labor. But they may stop after a while.
The most important thing is that the decision to have a membrane sweep is entirely yours. Even if your doctor suggests it, if you are uncomfortable or afraid about it, you have every right not to do it.
How do you know when the 'sweep' has really started?
It is important to distinguish between minor lameness after a 'sweep' and true lameness. True lameness can be characterized by the following:
- Regular, strong, and close-knit contractions: Initially, they start out about every 10 minutes, but gradually become more painful, last longer (about 45-60 seconds), and come more frequently (about every 5 minutes).
- Mucus plug: The passage of a thick, mucus-like substance that used to block the cervix.
- 'Bloody Show': A small amount of pink or red blood mixed in with the mucus is a good sign that the cervix is dilating.
- Water breaking: A sudden or gradual release of a watery fluid from the vagina.
If you experience one or more of these symptoms, call your doctor or hospital for advice.
When to seek immediate medical advice
Although there are normal discomforts after a 'sweep', if the following things happen, you should call your doctor immediately. Or go to the Emergency Department (ETU) of the nearest hospital.
- Heavy bleeding: If you bleed enough to completely soak a sanitary pad within an hour.
- If you experience unbearable pain .
- If you get a fever .
- If the water bag breaks and the liquid that comes out is green or brown.
- If the baby's movements decrease or are not felt.
It is very important to be aware of these things.
Take-Home Message
- A 'membrane sweep' is a generally safe method of helping labor begin naturally after 39 weeks.
- To do this, your cervix must be slightly open.
- You have the full right to decide whether or not to do this. This is an optional choice.
- It is normal to experience some discomfort and slight bleeding during and after the procedure.
- Although this is not a 100% effective method, it increases the likelihood of developing thrush without the use of medication.
- If you experience heavy bleeding, severe pain, or decreased baby movement after the sweep, notify your doctor immediately.
- Talk openly with your doctor about any questions or fears you have.
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