Patent foramen ovale (PFO)
Hello Doctor, my child is currently 2 years and 2 months old.
At birth, the foramen ovale was not closed and measured 0.2 cm.
During a follow-up at around 6 months, an ultrasound showed that it had closed.
However, recently, after my child had a cold and visited another doctor, a heart murmur was detected, and another examination indicated that the foramen ovale is now not closed and measures 0.31 cm.
Could you please explain why this is the case? Additionally, with the increase in size of the opening, should we only monitor it, or is any intervention necessary? Thank you for taking the time to respond.
Ms. Huang, 30~39 year old female. Ask Date: 2010/02/04
Dr. Pei Rensheng reply Pediatrics
Dear Ms.
Huang,
1.
The foramen ovale is a passage between the left and right atria.
It typically closes automatically within six months after birth.
If it remains open beyond six months, it is classified as an atrial septal defect (ASD), which accounts for 10% of congenital heart diseases.
2.
Treatment: (1) If the foramen ovale closes on its own within six months, no treatment is necessary.
(2) If it develops into an atrial septal defect, interventional treatment will be based on the size of the shunt.
3.
Generally, a size less than 0.3 cm is more likely to close spontaneously.
Currently, the foramen ovale is still open at 0.31 cm, so it is advisable to have a physician monitor the situation.
Wishing you health and happiness!
Sincerely,
Dr.
Pei Ren-Sheng
Director, Pediatrics Department
Taoyuan Hospital, Department of Health
Reply Date: 2010/02/04
More Info
Understanding Patent Foramen Ovale (PFO) in Children: What Parents Need to Know
Patent Foramen Ovale (PFO) is a condition that occurs when the foramen ovale, a small opening between the right and left atria of the heart, fails to close after birth. This opening is normal in fetal development, allowing blood to bypass the lungs, which are not yet in use. In most infants, this opening closes shortly after birth, but in some cases, it remains open, leading to a PFO.
In your child's case, it is important to understand that the presence of a PFO is relatively common and often does not lead to any significant health issues. Many children with a PFO are asymptomatic and do not require any treatment. However, the situation can vary based on the size of the opening and any associated symptoms.
Why the Change in Measurements?
The fluctuation in the size of the PFO that you mentioned—from 0.2 cm to 0.31 cm—can be attributed to several factors. First, the measurements of the foramen ovale can vary depending on the technique used during the echocardiogram and the child's position during the test. Additionally, the size of the PFO can change over time, particularly in young children as their hearts and bodies grow. It is not uncommon for a PFO to appear larger or smaller at different times, especially if the child is experiencing respiratory issues, such as during a cold.
Monitoring and Management
In most cases, if a PFO is detected and the child is asymptomatic, the standard approach is to monitor the condition. Regular follow-up appointments with a pediatric cardiologist are essential to ensure that the PFO does not lead to complications. The cardiologist may recommend periodic echocardiograms to assess the size of the PFO and to check for any changes in the heart's function.
When to Worry
While most children with a PFO do not experience problems, there are certain situations where further evaluation may be necessary. If your child exhibits symptoms such as unexplained fainting, shortness of breath, or any signs of a stroke (which are rare in children), it is crucial to seek immediate medical attention. In such cases, the cardiologist may recommend additional tests or interventions.
Treatment Options
For most children, no treatment is required for a PFO. However, if the PFO is associated with significant symptoms or complications, such as paradoxical embolism (where a blood clot passes from the right atrium to the left atrium and potentially travels to the brain), more invasive treatments may be considered. These can include catheter-based closure techniques or, in rare cases, surgical intervention.
Conclusion
In summary, a PFO is a common condition in children and often does not require treatment unless complications arise. Regular follow-ups with a pediatric cardiologist are essential to monitor the condition. If your child is asymptomatic, the best course of action is to continue with routine check-ups and maintain open communication with your healthcare provider about any concerns you may have. It is also beneficial to educate yourself about the condition, as understanding it can help alleviate any anxiety you may feel regarding your child's health. Always feel free to ask your child's doctor any questions you may have, as they can provide personalized guidance based on your child's specific situation.
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