Treatments include medicines to lower your blood pressure, lower your cholesterol, and keep your blood from clotting. These medicines will be started in the hospital, but you will still need to take them after you go home. You may also need to have cardiac catheterization. In this procedure, the doctor injects dye into blood vessels in the heart. This helps show where the vessels are blocked. You might also receive a coronary stent at this time. The stent helps keep blocked blood vessels open. However, you might need to have open heart surgery instead.