McLaren Health Care
Electrocardiogram - (EKG or ECG)

What is an electrocardiogram?

An electrocardiogram (EKG or ECG) is a test that checks for changes in the heart while the patient exercises. Sometimes ECG abnormalities can be seen only during exercise or while symptoms are present.

During the test, specialists monitor the heart while the patient exercises on a treadmill or a stationary bicycle. Small disks, called electrodes, are applied to the patient’s chest and are connected to wires called leads. The leads are connected to a monitor that records the electrical activity of the heart. The level of exercise is gradually increased to see how the patient’s heart responds to exercise.  

An electrocardiogram is done to help find the cause of chest pain or other symptoms, and to determine treatment plans for people with heart problems. Sometimes cardiologists perform the test without exercise. This may involve medication that has the same effect on the heart as exercise.

Patients can expect

  • Some prior preparation, including no food or fluid for a minimum of 4 hours before the test.
  • No food or drink items containing caffeine (coffee, tea, chocolate, cola) for at least 12 hours before the test.
  • The patient may be advised to stop taking certain medications before the test.

What to bring:

  • Physician referral form
  • Current medical insurance card
  • Driver’s license or other government-issued identification
  • Wear comfortable clothing. (Avoid metal straps, buttons, zippers)


cardiology, stroke services

Heart Health & Stroke Screening | Aug 20

3190 E. Midland Road
Center for Rehabilitation, Building C
Bay City

cardiology, diabetes services, heart failure, mens health, pulmonary, senior services, stroke services, vascular surgery, womens health

Heart to Heart Support Group - McLaren Port Huron

1320 Washington Avenue
Port Huron


Heart Healthy Living Group- An Overview of the Heart

820 Arlington Avenue


Hope Warriors- Cancer Discussion Group

444 South Main Street
See All Events

The Latest From McLaren Health Care