Hello Tass...did not mean to alarm you in any way !! If you doctor seems unconcerned that should be good ? If you look up AHA coarctation of the aorta, on the web , they have a good informative breakdown about it. My coarc was quite severe in childhood, therefore the proceedure then was to cut out the narrowing , end to end anasstamosis repair I think.. nowadays I think the advancement in medicine means that stents can be used to balloon open the narrowing, via the groin , but don,t quote me !! My coarc is followed because the scar tissue and recoarc means they need to monitor it and I understand in the future they would use a stent ? Hope this is helpful... good luck with everything , I always like to chat to fellow coarc people !! All the best "chicken !!"