As you get closer to becoming a mother, have you ever noticed that your belly is being measured every time you visit the doctor? You may have wondered, "Why do they always measure my belly?" So today we're going to talk about the ``Fundal Height'', or the height of the uterus. This is what doctors use to learn a lot about your baby. Let's see what it is.
What is ``(Fundal Height)``? Simply put...
Okay, let's first understand what `(Fundal Height)` is. Simply put, during your pregnancy, the `(Fundal Height)` is the distance from the bone in the front of your lower abdomen (we medically call it `(Symphysis Pubis)`, which is where your two hip bones meet in front) to the top of your uterus (the `(Fundus)`). This distance is measured in centimeters, using a regular tape measure.
This measurement allows doctors to get an idea of how well your baby is developing. It also helps to get an idea of how long you have been pregnant (`(Gestational Age)`) and how well your baby is growing inside the uterus. Usually, after about 20 weeks, when your `(Fundal Height)` is measured in centimeters, it should be roughly the same as the number of weeks you are pregnant. For example, if you are 24 weeks pregnant, your `(Fundal Height)` should be about 24 centimeters. However, there can be slight variations, which we will talk about later.
Since when do doctors start measuring this ``(Fundal Height)``?
Usually, when you go to the clinic after you're about 20 weeks pregnant, the doctor or nurse will start measuring this ``Fundal Height''. Do you know what? That's when the height of the uterus (``Fundal Height'') and the number of weeks you're pregnant (``Gestational Age'') start to match each other, that is, they start to be approximately the same. Before that, because the uterus is still small, that measurement is not very useful.
How is this ``(Fundal Height)`` measured?
This is a very simple measurement. You won't feel any difficulty.
1. First, you will be made to lie down on the examination bed.
2. Then, the doctor or nurse will find the spot in your lower abdomen where the bone I mentioned earlier is called the `(Symphysis Pubis)`.
3. Next, the top part of the uterus (`(Fundus)`) is felt. Sometimes the abdomen is pressed a little to find the exact top of the uterus.
4. Now, measure the distance from the `(Symphysis Pubis)` to the top of the uterus (`(Fundus)`). That distance is your `(Fundal Height)`.
Imagine, as your belly gradually grows, the top part of this uterus (the ``fundus'') also gradually rises.
- By about 12 weeks: The top of the uterus (`(Fundus)`) is almost at the level of the pubic bone (`(Symphysis Pubis)`).
- By about 20 weeks: It has reached the cervix. That's when the ``Fundal Height'' and the number of weeks start to become more or less the same.
- By about 36 weeks: The top of the uterus reaches almost to the breastbone (the ``(Sternum)``, the long bone in the middle of the chest). This is the maximum height at which the uterus reaches its highest point.
- After 36 weeks: Don't be surprised, your ``Fundal Height'' may decrease a little. This is because the baby is getting ready to be born and is moving down into your pelvis. We say "the baby is engaged." However, this can happen for other reasons as well. So your doctor may want to do more tests to see if there is another problem.
How accurate is this ``Fundal Height'' measurement?
In fact, the ``Fundal Height`` measurement is the simplest and most painless way to know about your baby's growth. If there is any problem with your baby's growth, or if there is a problem with the baby's position, this measurement helps to identify it early.
However, if your doctor has any doubts about the ``Fundal Height'', he or she will ask you to have an ``Ultrasound'' scan. A scan can give a fairly accurate picture of the baby's size. However, unless medically necessary, scans are usually only done twice during pregnancy.
Remember, there is no way to tell the size of a baby in the womb with 100% accuracy. It is normal for a centimeter or two to move around. Only if there is a serious problem will the doctor do further tests.
What can you learn about your baby from ``Fundal Height''?
This ``Fundal Height'' measurement allows the doctor to learn several very important things about the baby.
- The size of the baby: You can get an idea of whether the baby is big or small enough for the number of weeks.
- Baby's growth: You can see if the baby is growing properly and how the growth rate is compared to previous measurements.
- Baby's Position: Sometimes, the ``Fundal Height'' can also change depending on the baby's position.
- The amount of water in the uterus (`(Amniotic Fluid)`): You can also get an idea of the amount of water (we call it `(Amniotic Fluid)`) inside the uterus. Whether this amount of water is too little or too much, it can be a problem.
How much should the ``(Fundal Height)`` be from week to week?
Typically, between 20 and 36 weeks of pregnancy, your ``Fundal Height'', measured in centimeters, should be close to the number of weeks you are pregnant. However, a 2-centimeter difference is considered normal.
For example:
- If you are 32 weeks pregnant, it is normal for your ``Fundal Height'' to be between 30 and 34 centimeters.
However, this adjustment is not seen every week because the fundus is not as high before 20 weeks, and the fundus is slightly lower after 36 weeks as the baby descends. If the baby does not descend, it may be a sign that the baby is in the breech position.
Can you tell the size of the baby by ``Fundal Height''?
Yes, `(Fundal Height)` can give you some idea of the baby's size. In addition to measuring `(Fundal Height)`, the doctor will also try to get an idea of the baby's size and position by feeling your belly. But remember, this is just an estimate. If at any time during your pregnancy there is a question about the baby's size, the doctor will definitely refer you for further tests.
When should I be concerned about my ``(Fundal Height)``?
Most of the time, there is nothing to worry about with ``(Fundal Height)``. It is normal for it to fluctuate by about two weeks, or even a couple of centimeters. Your doctor will review your medical history and decide if further testing is needed. It may be:
- The due date you were given is probably a little wrong.
- Or the baby may be a little smaller or larger than normal.
So don't get too excited all of a sudden, okay?
Can ``(Fundal Height)`` be used to predict the due date of delivery?
No, doctors do not use ``Fundal Height'' to determine the due date (``Due Date''). ``Fundal Height'' is a measure of how big or small the baby is in relation to its gestational age (``Gestational Age''). The best way to determine your ``Due Date'' is to count 40 weeks (280 days) from the date of your last menstrual period. Doctors often use the ``Ultrasound'' scan in the first trimester to confirm both ``Gestational Age'' and ``Due Date''.
What happens if my ``Fundal Height'' is measured too low?
If the baby is measuring smaller than expected, meaning the ``Fundal Height'' is lower than expected, there could be several reasons. Don't worry, the doctor will look into these things.
- Your body size: If you are a little thin, or if your abdominal muscles are very strong, your fundal height may appear a little low.
- Low water in the uterus (`(Oligohydramnios)`): If the amount of `(Amniotic Fluid)` inside the uterus is low (we call it `(Oligohydramnios)`), then the measurement may also be low.
- Low baby height: If the baby is already ready for birth and has dropped down into your pelvis, the fundal height may decrease (this often happens towards the end of pregnancy).
- Fetal Growth Restriction: Some medical conditions can cause the baby to grow poorly. This is called Fetal Growth Restriction.
If your doctor has any doubts about the baby's size, he or she will do an ultrasound scan or other tests to investigate further.
What happens if my ``Fundal Height'' is measured too high?
Also, if the baby is measuring larger than expected, that is, if the ``Fundal Height'' is higher than expected, there may be several reasons for that.
- If the due date is wrong: You may be further along in your pregnancy than you think.
- Uterine Fibroids: If you have uterine fibroids, they can also cause an increase in fundal height.
- If your body mass index (BMI) is high: If your BMI is over 25 (meaning you are a bit overweight), your Fundal Height may be more visible.
- Twins: If you are expecting twins or triplets, the ``Fundal Height'' will definitely be higher.
- Increased fluid in the uterus (Polyhydramnios): If the amount of amniotic fluid inside the uterus is too high (we call it Polyhydramnios), then the measurement may also increase.
- Baby's position: If the baby is in a breech position, the fundal height may be increased.
- If the baby is large in size (`(Fetal Macrosomia)`): Sometimes the baby can be larger than normal. Babies of mothers with diabetes are more likely to be this large.
Sometimes, for no particular reason, your baby may be slightly larger than other babies. Or, the ``fundal height`` may be increased because your belly is stretched due to previous pregnancies or because your bladder is full.
What is the normal ``Fundal Height'' after having a baby?
After you have your baby, your uterus will start to shrink back to its original size. This takes about 6 weeks.
- About an hour after delivery: The top part of your uterus (`(Fundus)`) will be near the cervix (just like it was at 20 weeks of pregnancy).
- Then: The uterus begins to shrink by about a centimeter per day.
- By about a week: The top of the uterus (`(Fundus)`) will be near your pubic bone (`(Symphysis Pubis)`) (just like it was at 12 weeks of pregnancy).
Most of the time, when you go for your postnatal visit after having a baby, your uterus will have returned to its original position.
Finally, I have to say... (Take-Home Message)
So, measuring your ``Fundal Height`` is just one simple way for your doctor to see if your baby is growing properly. If your doctor says your measurement is a little lower or higher than expected, don't panic right away, okay? It usually just means that they need to do a little more research, like an ``Ultrasound`` scan. Most of the time, your baby is growing well and healthy.
If you have any questions or concerns about your fundal height, the size of your baby, or anything else, never be afraid to talk to your doctor. He or she can answer any questions you may have and put your mind at ease.
Wishing you and your baby good health!
` Pregnancy health, fundal height, baby growth, prenatal care, uterine height, pregnancy tests, baby size
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