Pediatric Heart Expert Forum
syncope in teenagers
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Questions in this forum are answered by pediatric cardiologists, cardiothoracic surgeons and anesthesiologists from The Children's Hospital of Philadelphia. This forum is for questions and support about pediatric heart problems, symptoms and topics such as heart murmurs, palpitations, fainting, chest pain, congenital heart defects (including management and intervention), fetal cardiology, adult congenital cardiology, arrhythmias and pre-participation athletic screening.

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syncope in teenagers

After a normal ECG and Heart sonogram, could my daughter still have Long QT Syndrome?
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773637 tn?1327450515
Dear Mom,

An echocardiogram is not useful in the confirmation of long QT.  As far as a normal ECG, there is increasing data to show that patients who have normal ECGs but are carriers of the abnormal gene mutation can stilll be symptomatic.  That said, the way that we often know about the gene is because they usually have a sibling who is gene positive, as well.  Thus, it would be important to ensure that there is no other important personal or family history consistent with long QT.  You should review this with your daughter's cardiologist.
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