Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs Cardiac arrhythmiaUpdated: 2017-06-13OverviewCardiac arrhythmia is a heartbeat that's irregular, too fast, or too slow. This occurs when electrical impulses in the heart don't work properly.SymptomsThere may be no symptoms. Or they may include a fluttering in the chest, chest pain, or dizziness.TreatmentsTreatment, if needed, includes drugs, medical procedures, implantable devices, and surgery. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use