For all those who don't seem able to read; This was for Angioplasty and not a transplant or bypass; .......... During a balloon angioplasty, a physician guides a long, thin tube called a catheter through a patient's arteries, usually entering through the groin, and into the heart. The catheter is tipped with an inflatable balloon. Once the balloon reaches the site of obstruction, it is rapidly inflated, crushing the plaque against the arterial wall and restoring blood flow through the vessel. To help keep the vessel open, the physician might also permanently implant a tiny mesh tube called stent.
Had this done some years ago, it takes about 15 mins and I was awake and watching the whole time.