New research has overturned one of the most fundamental beliefs among doctors treating heart attacks: that opening a blocked artery is always a good idea, even days or weeks later. Instead, the study revealed that doing this too late may not help, and there were disturbing hints that it might even be harmful. People who had balloon angioplasty to open an artery three to 28 days after their heart attacks fared no better than those given standard medicines to prevent a second attack. The results don't apply to most Americans suffering a heart attack, but suggest that 100,000 of them a year might be able to skip the expense and risk of angioplasty and take medications instead, doctors said. .... Angioplasty did seem to help prevent chest pain years after the procedure....People need to be clear about why they're having the angioplasty" and discuss with their doctor whether it is being done to try to improve symptoms or to try to prevent heart attacks and death.... The study also underscores the importance of fast medical help for heart attacks.
So I guess we did it for the right reason...to get rid of his chest pain...and for the wrong reason...to stop another one from happening.