OSF St. Joseph Medical Center

Bloomington, Illinois

Electrocardiogram (EKG)

An electrocardiogram (EKG) is a very common test that provides an electrical recording of the heart to determine the normal heart rate, rhythm, and blood flow to identify cardiac problems.  

An EKG records your heart’s electrical activity, and helps detect any irregular patterns.

An EKG can show the cardiologists many things:

  • A heartbeat that is too fast, too slow, or irregular.  
  • Problems with the heart valves
  • Inflammation of the sack surrounding the heart
  • Lack of blood flow to the heart muscle

Every patient is unique, and our physicians will work closely with you to individualize your care and needs.

Preparing for Your Test

There is no special preparation for this test.

What to Expect

Once you arrive for your appointment, you will be called into a private room and a nurse will explain the procedure and begin placing electrodes on your chest. This procedure is painless. These electrodes are about the size of a silver dollar and sense your heartbeat.

Men may need to have a small amount of hair removed to allow the electrodes to stick.

This procedure takes less than five minutes.

Results & Recovery

Your results will be sent to the ordering physician.


The Cardiology Department at OSF St. Joseph is located at Entrance A. Valet parking is available at this entrance.

Hours of operation are Monday through Friday from 7 a.m. to 4:30 p.m. and Saturday from 8 a.m. to 12 p.m.

Once your physician has placed the order for your test, please call (309) 661-5160 to schedule your appointment.

Should you need to cancel your appointment for any reason, please call 24-hours in advance whenever possible. If you cannot call at least 24-hours ahead, please call as soon as you know you need to cancel. Chances are, another patient can use your appointment time.