An electrocardiogram records the electrical signals in your heart, it is a painless, non-invasive way to help diagnose many common heart problems in people of all ages. Your doctor may use an electrocardiogram to determine or detect:

  • Abnormal heart rhythm (arrhythmia)
  • If blocked or narrowed arteries in your heart (coronary artery disease) are causing chest pain or a heart attack
  • Whether you have had a previous heart attack
  • How well certain heart disease treatments, such as a pacemaker, are working

You may need an ECG if you have any of the following signs and symptoms:

  • Chest pain
  • Dizziness, light-headedness or confusion
  • Heart palpitations
  • Rapid pulse
  • Shortness of breath
  • Weakness, fatigue or a decline in ability to exercise