My child has a fontan circulation is it normal that lately he is weezing and having short of breath?

No: If your child has had a fontan, new pulmonary symptoms are concerning. Seek medical help asap!

Shortness of breath: Is a serious symptom in such a child...See your pediatric cardiologist without delay.

Workup diagnose: Wheezing can be an indication of a number of conditions, including retention of fluid around the airways, bronchoconstriction from mucus plugs or asthma. I would suggest that your physician obtain a chest radiograph, an O2 saturation reading and pulmonary testing to further assess the cause.

Fontan : No it is not have your doc check her, it could be lungs but your doc should be able to tell