A Cardiac Pacemaker is an implanted medical device that generates electrical pulses delivered by electrodes to one or more of the chambers of the heart. 

A Cardiac Defibrillator is a device that monitors the heart rate and delivers a strong electrical shock to restore the heartbeat to normal in the event of tachycardia

Cardioversion is a medical procedure that uses quick, low-energy shocks to restore a regular heart rhythm.

An electrophysiological study (EP study) is a test used to evaluate your heart’s electrical system and to check for abnormal heart rhythms.

The Tilt Table Test is a test healthcare providers use for people who faint. It records your blood pressure, heart rhythm and heart rate on a beat-by-beat basis when the table you’re on tilts at different angles.