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Doctor insights on: Nuclear Stress Test Side Effects

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Tomorrow i'm getting a nuclear stress test w cardiolite. Worried about side effects and reaction to the thallium or whatever they use. Should i worry?

Tomorrow i'm getting a nuclear stress test w cardiolite. Worried about side effects and reaction to the thallium or whatever they use. Should i worry?

Isotopes quite safe: Dyes are not used during nuclear stress tests. Trace radioactive isotopes are but there are no significant reactions to these minute doses used considering the thousands of tests done around the globe daily unless one has a history of being allergic to the thallium or cardiolite. ...Read more

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Dr. Heidi Fowler
3,013 doctors shared insights

Stress (Definition)

Stress affects most people in some way. Acute (sudden, short-term) stress leads to rapid changes throughout the body. Almost all body systems (the heart and blood vessels, immune system, lungs, digestive system, sensory organs, and brain) gear up to meet perceived danger. These stress responses could prove beneficial in a critical, life-or-death situation. Over time, however, repeated stressful situations put a strain on the body that may contribute to physical and psychological problems. Chronic (long-term) stress can have real health consequences and should be addressed like any other health concern. Fortunately, research is showing that lifestyle changes and stress-reduction techniques can help people learn ...Read more


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Heart patient (3 90% blockages 1 stent) Has RIGHT arm pain and fatigue a few hrs into his day. Nuclear stress test showed right side vdark. Ideas?

Heart patient (3 90% blockages 1 stent) Has RIGHT arm pain and fatigue a few hrs into his day. Nuclear stress test showed right side vdark. Ideas?

Concerned: I am concerned by the story presented. I assume the dark right side of the heart is an area not well perfused with blood. Nonetheless the patient needs to see the cardiologist as solo as possible. Symptoms are worrisome . Best wishes ...Read more

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Will a nuclear stress test make me radioactive? I’m having a nuclear stress test, and i need to know if it’s safe for me to babysit my grandkids after it? Will i be radioactive? Could i be dangerous to the kids?

Will a nuclear stress test make me radioactive? I’m having a nuclear stress test, and i need to know if it’s safe for me to babysit my grandkids after it? Will i be radioactive? Could i be dangerous to the kids?

You : You will be sufficiently radioactive to set off alarms at airports, ferry terminals, and border crossings. The sensitivity of these devices is high on purpose. However, the amount of radiation a patient emits after a cardiac nuclear scan is not considered dangerous to others. Notice that the technologists who perform these tests do not wear lead or other radiation protection and they are around "radioactive" patients every day. For the sake of completeness, however, i will add that pregnant women should not undergo this test and anyone who thinks they might be pregnant should have a pregnancy test before having any kind of radionuclide scan. ...Read more

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What exactly does it mean if you did badly on a nuclear stress test?

What exactly does it mean if you did badly on a nuclear stress test?

Nuclear test: It means the images on the test were not normal. You need to discuss with your doctor what the test implications are for you. It isn't so straightforward that one can know from out here. ...Read more

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What can you tell me about the cardiolite nuclear stress test?

What can you tell me about the cardiolite nuclear stress test?

Myocardial scan: A cardiac perfusion scan measures the amount of blood supplied to your heart muscle. Radiotracers such as thallium or technetium sestamibi (cardiolite) are injected intravenously and travel through blood to heart muscle.2 sets of images are made during rest and exercise and compared. Indications for this study include chest pain, previous heart attack, heart surgery and coronary artery disease ...Read more

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My cardiology order a nuclear stress test can you explain what is this thanks?

My cardiology order a nuclear stress test can you explain what is this thanks?

Stress test: A nuclear stress test detects blood supply to the heart. A radioactive tracer is injected into the veins at peak exercise or with a vasodilator. The tracer is taken up by the heart cells and the uprake is proportional to blood flow. By comparing uptake at rest versus exercise we can determine if blood flow is compromised. ...Read more

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Echo EF is 60 calculated, 55 visual estimate, and 63 on nuclear stress test. What's most accurate?

EF: All three of these numbers are reasonably close and normal. All methodologies have ranges of accuracy and error factors. In theory the nuclear method is the most accurate of these three but again technique can cause error. ...Read more

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How often can nuclear stress test be safely repeated, would doing two tests in 4 month be safe. Any radiations concerns. ?

How often can nuclear stress test be safely  repeated, would doing two tests in 4 month be safe. Any radiations concerns. ?

No sig danger: The amount of radiation is pretty minimal. If its indicated, it should be fine but why repeat it after only 4 months? ...Read more

Dr. Ira Katz
3 doctors shared insights

Stress Test (Definition)

A stress test is a cardiac test which can include walking on a treadmill and monitoring your heart while you are walking. They can also inject you with a nuclear material and do a more comprehensive scan on your heart to check for blockage. They can also do a chemical stress test which omits the need to ...Read more