Sometimes a patient's heart does not properly beat and can cause a patient to become dizzy, easily tire or faint. This is due to the electrical properties of the heart. A permanent pacemaker is a small device that helps the heart beat regularly and eliminates troubling symptoms. The pacemaker is implanted underneath the skin in the upper chest area usually on the left side. An electrode is passed into the venous side of the heart and attached to the pacemaker. Together they sense when the heart is not beating correctly and are able to correct the beat.