An electrocardiogram is a painless, noninvasive way to diagnose many common types of heart problems. Your doctor may use an electrocardiogram to detect:

  • Irregularities in your heart rhythm (arrhythmias)
  • Heart defects
  • Problems with your heart's valves
  • Blocked or narrowed arteries in your heart (coronary artery disease)
  • A heart attack, in emergency situations
  • A previous heart attack
Oct. 24, 2012