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Doctor insights on: Chemical Stress Test

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Could nuclear stress tests be false?

Could nuclear stress tests be false?

Yes...: Yes...Nuclear stress tests can have false positive results. There are different types of nuclear stress tests. There is treadmill vs. Pharmacologic and there is spect vs. Pet. There are also many different tracers such as thallium or technetium for spect and ammonia or rubidium for pet. Each type of test has its own possible pitfalls. Artifacts are often the case of false positive. ...Read more

Dr. Heidi Fowler
3,144 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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Caffeine ok while having a chemical cardiac stress test using dipyridamole, persantine?

Caffeine ok while having a chemical cardiac stress test using dipyridamole, persantine?

NO!!!!: Caffeine should not be ingested prior to pharmacologic cardiac stress since it can interfere with the results. Stopping caffeine ingestion for at least 24 hours prior to pharmacologic stress should be sufficient. If caffeine is ingested and pharmacologic stress is performed, this can cause false negative results. If you have taken caffeine, stress may be rescheduled or switched to dobutamine. ...Read more

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Will a stress test also test lung function?

Generally no: There is something called a cardiopulmonary exercise stress test that does check lung and cardiac function but a regular cardiac stress test does not test lung function. ...Read more

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What is a treadmill stress test used to detect?

What is a treadmill stress test used to detect?

Diagnosis: To diagnosis underlying coronary artery disease in one with suggestive symptoms or to evaluate the efficacy of medical therapy in one with known coronary artery disease. ...Read more

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My stress test results read " positive exercise stress test for ischemia by EKG criteria. What does that mean?

My stress test results read " positive exercise stress test for ischemia by EKG criteria. What does that mean?

This means that the: EKG portion of your stress test had changes in the waveforms that have been known to be associated with blockages of the coronary arteries. Unfortunately, greater than 15% of the time this is inaccurate in women. Less than 5% of the time in men. This is why we always do stress testing in women along with nuclear imaging. If the nuclear imaging is negative then the EKG changes are FALSE positive. ...Read more

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Can a nuclear stress test cause you problems?

Can a nuclear stress test cause you problems?

Typically not: The only "risk" would be during the stress part, when one runs on a treadmill or gets a drug alternative. However, there is little risk here because this is monitored with an ekg and supervised by a cardiologist/nuclear physician. One drug that is used for stress even has an agent that can reverse its side effects. In summary, under normal standard-of care-conditions, there should be little risk. ...Read more

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What is persantine stress test done for?

What is persantine stress test done for?

Test for blockages: Persantine is used to augment changes seen in stress testing when coronary arteries have a blockage that limits flow. ...Read more

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What's stress thallium test?

Shows blood flow : thallium is tagged to red blood cells. The heart is stressed (increase cardiac outpu), then nuclear scanning helps show if there is equal blood flow to all parts of the heart, by detecting the radioactive thallium. ...Read more

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How much does adenosine nuclear stress test cost?

How much does adenosine nuclear stress test cost?

Adenosine stress $$$: The cost depends on where you live and whether test is being done in a hospital facility or cardiologist office the cost can vary from 800$ to 2000$. ...Read more

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Myocardial perfusion pet stress test with persantine had caffiene within 24 hours of test ?

Myocardial perfusion pet stress test with persantine had caffiene within 24 hours of test ?

No need to worry: You didn't mention whether the test was positive. Even then caffeine induced heart rate increase should not cause any problems. Hope you don't smoke. ...Read more

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How is a persantine sestamibi stress test performed?

How is a persantine sestamibi stress test performed?

pharmacologic stress: Often we use other agents but Persantine is injected and the patient is either imaged soon after or after a little exercise, after the Persantine administration, sestamibi is injected to allow the imaging. ...Read more

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False positive stress test reason?

False positive stress test reason?

Body habitus: Most common cause of false positive stress test is body habitus. This commonly affects women because the heart rhythm needs to be picked up through their breast tissue. ...Read more

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Can different hormones affect a home pregnancy test?

Can different hormones affect a home pregnancy test?

Can I be Pregnant?: Nope. That ambiguous question without any specifics is difficult to answer. But the HCG hormone tested for pregnancy is not the common hormones used in health care for gyn concerns. ...Read more

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Do benzodiazepines effect a stress or echocardiogram test?

Do benzodiazepines effect a stress or echocardiogram test?

It depends: Chronic stable use probably would have little effect. Acute use could well effect it. In this case i would expect the test to be less sensitive to picking up a "stress" induced change. ...Read more

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Can stress cause your cycle to stop? Almost 3 weeks late and negative pregnancy test results. Will an eptopic sp? Pregnancy cause negative results?

Can stress cause your cycle to stop? Almost 3 weeks late and negative pregnancy test results. Will an eptopic sp? Pregnancy cause negative results?

All can be true: Urine pregnancy tests are rarely negative if you are pregnant. And they are not specific for what type of pregnancy (normal, not normal, ectopic, etc). Stress, hormone imbalances, thyroid disease can all cause irregular periods. You should see your doctor to figure out which is the problem. Better to know and treat now. Good luck! ...Read more

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Dr. Jeffrey Stevens
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