Table of Contents
What Is Oligohydramnios?
Oligohydramnios is when there is not enough amniotic fluid around your baby during pregnancy. This amniotic fluid protects your baby. Plus, it is also helpful in the organ development of the baby.
If there isn’t enough of this fluid, it can sometimes lead to health problems for your baby or signal that something else might be going on with your pregnancy. Not every case causes issues, but the risks can be higher if low fluid shows up early in your pregnancy. Monitoring amniotic fluid levels is a big part of prenatal care.
What Are the Causes and Risk Factors of Oligohydramnios?
Sometimes, it is difficult to pinpoint precisely why oligohydramnios occurs, but several possible reasons exist. Both the baby and the mom can play a role.
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Kidney or urinary tract problems can lead to low fluid on the baby's side, since the baby might not be peeing as much as usual. Conditions like renal agenesis (where one or both kidneys do not develop) or Potter’s syndrome (which affects lung development) are severe and can result in miscarriage or stillbirth.
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On mom’s side, there can be premature rupture of membranes; if your amniotic sac breaks early, fluid can leak out, dropping the levels and leading to oligohydramnios.
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Problems with your placenta, like not getting enough blood or nutrients to your baby, can also cause your baby to stop recycling fluid. Sometimes, your placenta can separate too soon (placental abruption), which is another risk.
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Another factor is going past your due date. Fluid naturally decreases the longer the pregnancy continues, which can become an issue if you are overdue.
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If a pregnant mother is suffering from hypertension (high blood pressure) and high blood sugar levels (diabetes) or even taking certain medications like NSAIDs (non-steroidal anti-inflammatory drugs) or ACE (angiotensin-converting enzyme) inhibitors, these can all contribute to low amniotic fluid.
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Being over 35 can also raise your risk.
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According to certain studies, oligohydramnios tends to show up more often if you carry a boy.
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Certain viral infections, like CMV (cytomegalovirus) or rubella, can affect your baby’s development and lower fluid levels.
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Plus, being around harmful substances or toxins in your environment might make it more likely for you to develop this condition.
What Are the Symptoms of Oligohydramnios?
Low amniotic fluid usually pops up later in pregnancy, often in the last few weeks, but it can show up earlier, too. Most of the time, you would not notice any symptoms, but usually something your doctor finds during a routine checkup or ultrasound.
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Sometimes, you might notice your baby isn’t moving as much as usual, which could indicate that there’s less fluid.
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If you see any leaking fluid, it might mean your water has broken early.
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Your doctor might also mention that your uterus is measuring smaller than expected, which can be another clue.
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In rare cases, you could have belly pain, discomfort, or even heavy bleeding. If you notice these changes, you must inform your healthcare provider immediately.
How Is Oligohydramnios Diagnosed?
The diagnostic tests are as follows:
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Ultrasound: Your doctor usually starts with a routine ultrasound to check for oligohydramnios. This scan measures how much amniotic fluid is around your baby and can also spot any possible issues with your baby’s development.
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Tests to Check for Amniotic Fluid Levels: Your doctor will use the following tests to check for amniotic fluid levels. The main tests they use are the amniotic fluid index (AFI) and the maximum vertical pocket (MVP).
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For the AFI, your doctor uses an ultrasound to measure the fluid in four different areas of your uterus, then adds those numbers up. If the total is under five centimeters, it is considered low.
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The MVP test checks the deepest single pocket of fluid; if it’s less than two centimeters, that’s also a sign of oligohydramnios.
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Blood Tests: Besides ultrasounds, your provider might perform these tests to find the reason for low fluid levels, such as infections or other health problems.
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Pelvic Examination: If there’s a concern that your water might have broken early, they might do a pelvic exam to check for leaking fluid. All these checks help make sure your baby’s environment is safe and healthy.
How Is Oligohydramnios Treated?
How your doctor treats oligohydramnios depends on what’s causing it and how far along you are in your pregnancy. If you are healthy and the low fluid shows up near the end of your pregnancy, you might not need any special treatment. Sometimes, just keeping a close eye on things is enough.
If you’re not full-term yet, your provider will probably monitor you and your baby more often, usually with weekly ultrasounds, to check fluid levels and growth. If you’re close to your due date, your doctor might recommend delivering the baby, since that’s often the safest choice when fluid is low.
There are a few things your doctor might suggest to help boost your amniotic fluid or keep you and your baby safe:
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Drinking More Water: Staying hydrated helps increase fluid levels.
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Resting: You might be told to take it easy or even go on bed rest.
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Amnioinfusion: If you are in labor and your water has broken, your doctor might add saline (a salty fluid) into your uterus through the cervix to help prevent the umbilical cord from getting squeezed. In some cases, this can also be done during pregnancy to help your baby’s lung development.
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Treating Underlying Conditions: If you have high blood pressure or diabetes, your doctor will work to manage those.
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Medications: If your water has broken, you could get antibiotics to prevent infection or medicine to help your baby’s lungs if there are placental issues.
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Fetal Surgery: Rarely, if the problem is with your baby’s urinary tract and surgery can fix it, that might be an option.
What Are the Complications and Prognosis of Oligohydramnios?
If oligohydramnios is not treated or managed well, it can lead to many problems for both you and your baby.
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You might go into labor early or need a C-section because your baby could have trouble handling labor. There is an increased risk of umbilical cord squeezing, which means your baby might not get enough oxygen or nutrients during delivery.
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Low fluid can also slow down your baby’s growth and even cause congenital disabilities, especially if it happens early in pregnancy.
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Miscarriage.
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Stillbirth.
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Your baby could have joint or limb issues from not being able to move around enough, and there’s a risk of abnormal heart rate patterns due to stress on the baby during labor.
Prognosis:
How well things go with oligohydramnios depends on what is causing it and how serious it is. If it is diagnosed early in pregnancy, especially before 24 weeks, the outlook can be tougher because it’s often linked to serious problems with the baby’s development. But if it shows up later, in the third trimester, the chances are usually better, especially if the cause is not too serious and your baby has been growing well.
How to Prevent Oligohydramnios?
There is no guaranteed way to prevent oligohydramnios, but there are some preventive measures to lower the risk.
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Attend all your prenatal checkups.
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Eating a balanced diet, staying active, and keeping hydrated all help support a healthy pregnancy.
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It’s also a good idea to avoid harmful activities, such as smoking or drinking, and to practice good hygiene.
Conclusion:
Oligohydramnios is when there is insufficient amniotic fluid around your baby during pregnancy. If your baby is not moving much or you have other concerns, reach out to your doctor so they can check things out and guide you on what to do next. Try not to panic! Most people with low amniotic fluid still go on to have healthy babies. Staying in touch with your healthcare team and following their advice is the best way to keep you and your baby safe.
A Keynote by iCliniq:
Oligohydramnios can affect you at any time during your pregnancy journey, and it is something to take seriously because it can affect your baby. If you ever notice fluid leaking from your vagina while you are pregnant, don’t wait! Contact at icliniq.com. They will help determine what’s happening and develop the safest plan for you and your baby. The main goal is to keep you and your baby healthy.
