What is severe subpulmonary stenosis due to mitral valve chordal apparatus with a peak gradient of 72 mmHg?

My son is 9 months old and was born with a rare heart defect cctga. He was diagnoised 2 months ago and at his echo they wrote that on the results. I am going to ask when I go down in a month but I have noticed there are a few dr's. on here so I was hoping someone would have some insight. What does this mean and what questions should I be asking his card? thank youWhat is severe subpulmonary stenosis due to mitral valve chordal apparatus with a peak gradient of 72 mmHg?
CCTGA means congenitally corrected transposition of great arteries. In usual transposition aorta which should carry oxygenated blood gets connected to right ventricle and pulmonary artery which should be carrying deoxygenated blood to lungs gets connected to left ventricle. In congenitally corrected transposition, in addition to this, right atrium (upper chamber) connects to the left ventricle and left atrium connects to the right ventricle. So there is a double reversal which becomes near normal. This is because deoxygenated blood from right atrium goes to left ventricle and then through pulmonary artery, into the lungs for oxygenation. Similarly, oxygenated blood from left atrium goes to right ventricle and to the aorta, into the general circulation. So everything is fine till this as this is near normal functioning of the heart.








The addtional problem which your son is that he has a narrowing below the pulmonary valve, which may require correction at a suitable time, which only the treating doctor can tell you. The narrowing is due to the structures attached to the mitral valve (chordal apparatus) in the left ventricle, the ventricle which is connected to the pulmonary artery in his case. In a normal individual, left ventricle connects to the aorta and not the pulmonary artery.What is severe subpulmonary stenosis due to mitral valve chordal apparatus with a peak gradient of 72 mmHg?
basically there is narrowing below the pulmonary valve which will require treatment either balloon dilatation or surgery.


if your in the uk and want to speak to other parents you can check out the childrens heart federation who have a freephone helpline or there is an online message board as part of the evelina childrens heart organisation website.
Wow..I am sorry your baby is going through this. I am only vaguely familar with this but I do want to offer my support.


Stenosis is always a narrowing of the arteries. Your baby will probably have to have open heart surgery.


My best friend's grand daughter has this same condition. She went to Children's Hospital In New Orleans and she is going great! My prayers to you and your baby!

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