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Home > Services and Specialties > Heart Center > Heart Procedures > Signal-Average Electrocardiogram 
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Signal-Average Electrocardiogram

What to Expect

What to Do the Night Before
No special preparation, such as fasting or NPO (nothing by mouth) overnight is required.

Diagnostic Tests Before the Procedure
Depending on the reason for the EKG, you may or may not need to have any other tests prior to an EKG. An EKG is normally a baseline test to establish a diagnostic path.

Directions to the Hospital

It is important to arrive at your scheduled time. Your procedure may not begin immediately due to varying lengths of procedures scheduled before your procedure. You will be updated as frequently as possible.

Preparing for the Procedure in the Hospital

  • Description of IV, site preparations, and medications that may be administered - No intravenous line (IV) or medication is required for an EKG. You will be asked to remove your shirt or blouse. Women may be asked to remove their bras, as well. Your privacy will be maintained by covering your chest with a gown or sheet and by limiting access into the area where the test is being done. If your arms, legs, or chest are extremely hairy, small patches may be shaved for electrode placement, as close skin contact is necessary for the most accurate EKG tracing. The skin electrodes may be self-adhering, or may be attached to the skin with a special gel. The electrodes that attach to the arms and legs may be the same as those used on the chest, or they may be small metal plates that are secured to the arms and legs with elastic straps.

  • Consent forms - A consent form is not required, but a physician's order is necessary.

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