Angioplasty is a procedure to open up clogged arteries. In the angioplasty procedure, a balloon catheter to open up a blocked blood vessel. The goal is to improve blood flow. This procedure is often used to treat the results of peripheral arterial disease. Angioplasty is minimally invasive and may not require general anesthesia. Most angioplasty procedures do not need an overnight stay. However, your doctor will discuss this with you.