Normal Ventricular Size in Fetal Ultrasound: What to Know - Obstetrics and Gynecology

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What is the normal size of the ventricles?


Dr.
Tsao: I would like to ask you about the normal size of the ventricles.
It turns out that the last test I had was not a 4D ultrasound but a high-level ultrasound.
During this prenatal check-up, they said my measurement was between 8 and 9, but they want to monitor it.
What does that mean? Does my fetus have a problem? They mentioned that a measurement above 10 is abnormal.
I showed the report to another doctor, and they said there was no issue.
Is the first doctor trying to scare me? I am really worried.
They also said I need to have regular follow-ups.
I am already 25 weeks pregnant, and they want me to come in every two weeks, but I have a very bad feeling about this.
Should I switch to another hospital for delivery? Or is it possible that they want me to keep coming back for check-ups so that I will end up delivering there? This is making my pregnancy very stressful, and I am afraid there might be something wrong with my baby.
I also want to ask you, my job requires me to work on the computer every day, sitting in front of the screen.
Will this affect my baby? What should I do?

Wei Mami, 20~29 year old female. Ask Date: 2006/05/11

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, Wei Mommy: The normal size of the ventricles varies with gestational age, which can lead to conditions such as hydrocephalus or ventricular enlargement.
The primary causes are an increase in cerebrospinal fluid production or a blockage in the drainage of cerebrospinal fluid.
If these causes are resolved, the initially enlarged ventricles may return to normal, which would not affect the fetal brain development.
The two doctors you mentioned on the phone are both excellent and trustworthy, and theoretically, there should be no issues with the diagnosis.
If you still have concerns, you may consider switching to Hsinchu City Hospital, Mackay Memorial Hospital, or Cathay General Hospital, and ask the doctors there to perform another ultrasound scan.
If the results are normal, I believe it would be fine to return to Dr.
Xie for delivery.
I hope this response satisfies you, and I wish your little baby all the best and a smooth journey.

Reply Date: 2006/05/11

More Info


Understanding the normal ventricular size in fetal ultrasound is crucial for monitoring the health and development of the fetus. In your case, the measurement of 8 to 9 mm for the ventricles is within a range that can be considered normal, depending on the gestational age. Typically, the normal range for fetal ventricular size can vary, but measurements above 10 mm may raise concerns for potential abnormalities.
The recommendation for regular follow-up ultrasounds is standard practice when there are measurements that are on the higher end of the normal range or slightly above. This is not necessarily an indication that there is a problem with your fetus, but rather a precautionary measure to ensure that everything is developing as expected. The fact that another doctor reviewed your report and indicated that there were no issues is reassuring. It’s important to remember that different practitioners may have varying thresholds for what they consider normal, and they may recommend monitoring to ensure the best outcomes.

Regarding your concerns about your work environment, being in front of a computer daily is generally considered safe during pregnancy. However, it is essential to take regular breaks, maintain good posture, and ensure that your workstation is ergonomically set up to avoid strain. Staying hydrated and managing stress levels are also important for both your health and the health of your baby.

If you feel anxious about your current healthcare provider or the monitoring process, it is entirely reasonable to seek a second opinion or consult with another healthcare professional. Your peace of mind is crucial during this time, and you should feel comfortable with the care you are receiving.
In summary, while the measurements you mentioned may require monitoring, they do not automatically indicate a problem. Regular follow-ups are a proactive approach to ensure the health of your baby. Continue to communicate openly with your healthcare providers, and do not hesitate to express your concerns or seek additional opinions if needed. Your emotional well-being is just as important as the physical health of your pregnancy.

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