Holter Monitor
A small wearable monitor that records your heart rhythm for 24-48 hours.
What it is
A small, wearable monitor that records your heart rhythm continuously at home for 24-48 hours.
Why your doctor may order it
To catch intermittent palpitations
To detect rhythm changes a brief EKG might miss
What to expect
Arrival
Our team fits the monitor and shows you how to wear it comfortably.
During the test
You wear the monitor during your normal daily activities, including sleep.
Duration
Typically worn for 24-48 hours, as directed.
After
You return the monitor at the clinic; a cardiologist reviews the recorded data.
How to prepare
- Shower before your fitting appointment, as the monitor should stay dry while worn
- Wear a shirt that allows easy access to your chest
Download a printable prep sheet to review before your visit.
Download prep sheet (PDF)Results & next steps
A cardiologist reviews your results and prepares a detailed report, which is sent directly to your referring physician — typically within a few business days. Your doctor will follow up with you to discuss the findings and any next steps.
Available at these locations
Frequently asked questions
Ready to book your holter monitor?
Most services are OHIP-covered with a referral. This information is general and not medical advice; in an emergency call 911.