If you have ever felt an irregular heartbeat, you know it can be an upsetting experience. Many people have occasional irregular heartbeats, called arrhythmias, but it is important to talk to your doctor if they occur frequently. Some people with irregular heartbeats feel inappropriate fluttering in their chests when they exert themselves. Other symptoms can be fainting, shortness of breath, dizziness, lightheadedness and chest pain. The fluttering in the chest can last from minutes to hours.Your physician will refer you to a specialist for care. Some people respond to medication to treat the abnormal electrical circuits in the heart, but others benefit from a procedure called ablation. Centegra’s echocardiography labs are accredited by the Intersocietal Accreditation Commission and recognized for their commitment to high-quality patient care and diagnostic testing.