Pacemakers and Defibrillators.

If your heart rate is too slow, a pacemaker can help speed it up. A defibrillator will help correct a rapid, dangerous rhythm.

If your heart rate is irregular or slow, a pacemaker or defibrillator will regulate it. It can also improve your heart pumping ability if you have a heart condition. These small electrical devices are placed just below the collarbone. They are mostly located on the left side.