1.   The doctors inserted a catheter with an inflatable balloon to open up an artery and implanted a stent to keep it open.

2.   The doctors performed an angioplasty, a procedure that opens the artery, and implanted a stent, a mesh tube that keeps the blood vessel open.

3.   Doctors had implanted a stent, a little metal scaffolding, to prop open an almost completely blocked coronary artery.

4.   Doctors implanted a stent to open the artery.

5.   Last November, doctors treated Cheney for a mild heart attack by implanting a stent, a little metal scaffolding, to prop open an almost completely blocked artery.