Cardiac electrophysiology studies the heart's electrical system, which regulates heartbeat speed and pattern. Issues in this system can lead to arrhythmias, or irregular heartbeats.
Arrhythmias are classified by their location. Atrial arrhythmias are in the upper heart and ventricular arrhythmias are in the lower heart. Symptoms vary; some people are unaware, while others feel mild or noticeable changes. Commonly reported arrhythmia symptoms include: