Child with Double aortic arch/digeorge possability

16 mnth with Parainfluenza 3 months ago needed an ICU stay as his airway was severly comprimised, during an stay in ICU the reintubated him which blocked up his tube and caused a cardiac arrest and he suffered severe brain damage from this via hypoxic eschemic insult, over the last 3 months after being told he would not walk/talk/see/hear etc he has done fantastically well and making abgreat recovery. Recent MRI tests revealed damage to basil ganglia region which affects movement and balance. all other area's appear to have redeveloped nicely## broncoscopy noticed indent last 3rd of his trachea  and a CT and MRI scan revealed a Douible aortic arch which we are waiting to see a cardiathorasic sergion in Leeds England next week.  I have a few questions about this.  the anesthetist could get size 5 ENT down no real issues apart from mild stridor on extubation.## Is this a simple procedure and one that has a good sucess rate of pulling through and what are the risks? Is it possible an operation may not be needed? this wouldnt have caused him to have the Cardiac arrest would it, as far as I know his heart itself is fine and he had an ECG which showed no issues.# Will his life expectancy be cut short

20% of children with this are a candidate for digeorge which makes me think, was if his reduced airway from the DAA that when he got flu it swelled up and did the damage OR may he had digeorge and it was his lack of immunity that comprimised his airway further and affceted him that badly. he has no other symtoms (symptoms) of digeorge really apart from when he was younger he was sick a lot but that resolved after a few months, he was also born with a very slightly bigger kidney but am told this has resolved itself, the only other thing to mention is when he was 4 months he got severe chicken pox but other than that he has been healthy and the perfect little man, he has no facial features of DGS and his calcium levels appear fine,  they also thing he has a thymus.

[Cleveland Clinic]

Unfortunately, I am not an expert in pediatric congenital heart disease and am unable to provide any of those stats to you.  I am sorry.  There also really isn't anyone in my institution who specializes in that.  Really, the only way to find this out is to talk to an expert and I hope your surgeon is one.  At the same time I do think the double aortic arch may have been involved in the arrest when your child was stressed with the upper respiratory infection.  Typically, the DAA compresses on the wind pipe and if there was any swelling there from the infection, I can definitely see how the two could decrease air flow to the lungs and cause hypoxia leading to the arrest.