Atherectomy is a minimally-invasive procedure that widens narrowed arteries by removing plaque from the artery wall. In this procedure, a surgeon will thread a catheter with a small rotating blade on the end to the affected artery. Once it’s in place, the plaque is removed from the wall and collected in the tip of the catheter. This procedure requires up to a two-day stay in the hospital. You may also need cardiac rehabilitation after this procedure.