If you're having cardiac catheterization as a test, your doctor should explain the results to you.
If you've had a coronary angiogram, your results could indicate that you need angioplasty or a stent, or a more major open-heart surgery called coronary bypass surgery. In some cases, your angiogram may show that angioplasty would likely be an effective treatment to open a narrowed artery. If your doctor finds this, he or she may perform angioplasty with or without a stent placement right away so that you won't need to have another cardiac catheterization.
Your doctor should discuss whether this is a possibility before the procedure begins.