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Signal-Averaged Electrocardiogram

Patients may come into Long Island Heart Associates with a chest pain and a LIHA physician may want to order a signal-averaged electrocardiogram. A signal-averaged electrocardiogram is a more in-depth type of ECG or EKG in order to capture abnormal heartbeats which may only occur now and then. A signal averaged EKG or ECG also helps measures the potential of dysrhythmias/arrhythmias.


What to expect during a Signal-Averaged Electrocardiogram

After disrobing from the waist up, you will be given a gown and asked to lie down on an exam table. Electrodes are attached to your chest for an electrocardiogram (ECG) at the same time. The ECG helps with the interpretation of the echocardiogram and evaluating the electrical impulses in the heart. The lights will be dimmed so the technician can see your heart’s image on the screen more clearly. The exam usually takes about 20 minutes to gather all the information your doctor may need. The computer then uses the information from the transducer and creates images which are displayed on the video monitor.

  • There is no preparation for a conventional echocardiogram.
  • Please consult your physician about any medications you may take before the test.
  • Results will be available once your physician has interpreted the pictures, within 24-48 hours.
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