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About Holter Monitors

​​​​​​Location

​​​​​​​​​​Toronto General Hospital | Map iconMaps & Directions
Gerrard Building - 3rd Floor, Room 582 in the ​Electrophysiology Department
​Clinic Directions​


​​​​​​​​​​Toronto Western Hospital | Map iconMaps & Directions
East Wing - 5th Floor, Room 403 in the ​Nuclear Cardiology Lab

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Check your appointment details to find out which hospital your appointment is at.


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What We Do

A holter monitor is a small, portable ECG recorder that's worn for either 24, 48 or 72 hours. It records the heart rhythm during normal daily activities and while sleeping. This may identify slow, fast or irregular heart rhythms that may be responsible for symptoms such as fainting (syncope) or palpitations (feeling a fast or irregular heart beat). Nuclear Cardiology has 24 or 48 hour monitors.

Hours & Contact:

Toronto General Hospital Electrophysiology Department
Monday - Friday
8:30 am - 4:30 pm

Phone: 416 340 3248

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Toronto Western Hospital Nuclear Cardiology
Monday - Friday
7:45 am - 4:15 pm

Phone: 416 603 5658

 Health Information

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


Visit our health information section.​​​​​