About Electrocardiograms (ECG)


​​​​​​​​​​Toronto General Hospital | Map iconMaps & Directions
Eaton Building - Ground Floor, Room 406 in the Diagnostic Test Centre​​​

​​​​​​​​​​Toronto Western Hospital | Map iconMaps & Directions
McLaughlin - 1st Floor, Room 405 in the Diagnostic Test Centre​​​

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What We Do

An ECG records the electrical impulses moving through the heart muscle. The test won't cause you any pain, but you'll need to lie quietly for about 3 minutes. Wires will be attached to your chest, arms and legs. Electrical currents from your heart will go through the ECG machine and be recorded on special graph paper.

The ECG is used to measure the rate and regularity of heartbeats and can show an abnormal heartbeat, the presence of any damage or enlargement of the heart muscle. It can also show if your heart isn't getting enough oxygen and the effects of drugs or regulating devices.

Hours & Contact:

Toronto General Hospital
Monday – Thursday
7:00 am - 5:00 pm
7:00 am - 4:30 pm

Phone: 416 340 3968

Toronto Western Hospital
Monday - Friday
7:00 am - 5:00 pm

Phone: 416 603 5859

 Health Information

​The Patient & Family Education Program at UHN offers valuable resources to help you understand your condition.​

Visit our health information section.​​​​​

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