Our UHN programs and services are among the most advanced in the world. We have grouped our physicians, staff, services and resources into 10 medical programs to meet the needs of our patients and help us make the most of our resources.
University Health Network is a health care and medical research organization in Toronto, Ontario, Canada. The scope of research and complexity of cases at UHN has made us a national and international source for discovery, education and patient care.
Our 10 medical programs are spread across eight hospital sites – Princess Margaret, Toronto General, Toronto Rehab’s five sites, Toronto Western – as well as our education programs through the Michener Institute of Education at UHN. Learn more about the services, programs and amenities offered at each location.
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Find out how to get to and around our nine locations — floor plans, parking, public transit, accessibility services, and shuttle information.
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Please bring with you a list of your current medications. This includes prescription medications, over-the-counter medications, vitamin or mineral supplements and herbal remedies.
DO NOT eat or drink caffeinated, decaffeinated or caffeine-free products (such as soda, chocolate, coffee, energy drinks, tea, or Tylenol #1, 2 or 3) for at least 48 hours before the test.
When you arrive at the
Nuclear Cardiology Lab, check in at the reception desk. Please have the following ready:
When you check in, the receptionist will give you a name band to wear. The technologist will call you when it is time for your test. You will be asked to change into a hospital gown. There are lockers for your clothes in the change area, but you should keep your valuables with you.When you have finished changing, a technologist will take you into the room. They will explain the procedure and ask for your consent.
The test has two parts. First, a technologist will first ask you questions about your medical history, do an
ECG and check your blood pressure and heart rate. Then you'll be given a needle with a radioactive tracer called Sestamibi, which lets us see how your heart is working.
After a wait of about 45 minutes to an hour, we'll take pictures of your heart at rest. You'll need to lie very still under a gamma camera with your arms above your head for half an hour.
You can then have a break, and you can eat something light (such as soup, sandwich, salad, water, juice or white milk). Please DO NOT have anything with caffeine during the break.
After the break, the technologist will set up an intravenous (IV) line in your arm or hand. Then you'll start exercising. The treadmill will start slowly and change speed and elevation every 3 minutes.
When your heart rate reaches a certain level, the technologist will inject a small amount of Sestamibi. You'll keep going on the treadmill for one more minute.
The next step is to take pictures of your heart after exercise. You need to lie very still under the gamma camera with your arms above your head for 30 minutes.
Once the test is completed, the technologist uploads your results to your records. The physician/radiologist will write a report and send it to your doctor.
The technologist cannot give you the results during your visit.
Once the report is in your health record, your doctor can review it. You will get the results of the test from your doctor.
The whole appointment for the exercise sestamibi test takes about 4 to 5 hours. The first part of the test will take about 2 hours, and the second part will take about 90 minutes with a break in between.
We do everything that we can to stay on time. Unfortunately, your appointment may be delayed by unforeseen circumstances. We recommend that you come prepared for delays.