Atrial Fibrillation
Atrial fibrillation is a fast and irregular rhythm arising from the upper chambers of the heart. Symptoms may include palpitations, fatigue, shortness of breath, or no symptoms at all.
Patient Education
Heart rhythm conditions
A simple overview of common rhythm disorders. A diagnosis requires evaluation by a qualified clinician.
Atrial Flutter
Atrial flutter is a rapid, organized rhythm in the upper chambers. It may cause symptoms similar to atrial fibrillation and can sometimes occur in the same patient.
Supraventricular Tachycardia (SVT)
SVT is an abnormally fast rhythm that usually begins suddenly and may stop suddenly. Patients often describe a rapid, regular pounding heartbeat.
Premature Ventricular Contractions (PVCs)
PVCs are early beats that begin in the lower chambers. They may feel like skipped beats, extra beats, or a brief pounding sensation.
Bradycardia
Bradycardia means the heart rate is slower than expected. It may be normal in some people, but it can also cause fatigue, dizziness, exercise intolerance, or fainting.
Heart Block
Heart block occurs when electrical signals are delayed or interrupted as they travel through the heart. Some forms require close observation or pacemaker therapy.
Ventricular Tachycardia
Ventricular tachycardia is a rapid rhythm that begins in the lower chambers and may be serious. Treatment depends on the cause, duration, symptoms, and underlying heart condition.
Syncope
Syncope means fainting or temporary loss of consciousness. Rhythm problems are one possible cause, but many non-cardiac causes also exist.
Emergency warning: Call 911 for chest pain, severe shortness of breath, sustained fainting, or other potentially life-threatening symptoms.