If your caths are great and you have never suffered a heart attack
then why was a cabg done at the first place.
If you mean the new grafts ate great then the chest pain
that's building up must not be due to the cardiac problem however a variable angina
can always be causative
Also you should get ab arterial blood
gas done so that normal oxygenation of your blood alleviates the use ofany oxygen and then see a chest physician