Pacemakers - electronic devices that stimulate the heart to beat at a pre-set rate; can be placed under the patient's skin below the collarbone.

Defibrillators - electronic devices that sense and correct a dangerously abnormal heart rhythm; can be implanted like a pacemaker.

Radiofrequency Catheter Ablation - Uses radio waves sent through a catheter to the heart muscle to permanently block an abnormal pathway.

Cardiac Resynchronization Therapy - is a unique device therapy for heart failure. In the electrophysiology lab, physicians place a small "biventricular resynchronization" device under the patient's skin, below the collarbone. This device is similar to a pacemaker in size, shape and weight, and uses a sealed battery to provide electrical signals to the heart. But it also has three electrical leads, which are placed in three different heart chambers. This device causes the heart chambers to beat "in sync" with one another, improving the heart's pumping efficiency and helping to relieve heart failure symptoms.