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Doctor insights on: How Does Caffeine Affect The Results Of Thallium Myocardial Perfusion Scan

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How does caffeine affect the results of thallium myocardial perfusion scan?

How does caffeine affect the results of thallium myocardial perfusion scan?

Not usually: Caffeine in the usual dietary dose won't affect an exercise stress test with thallium imaging, but if you ingest caffeine recently you cannot have a stress test with pharmacologic stress using Persantine (dipyridamole), Adenosine or Lexiscan because the caffeine interferes with the metabolism of those agents. ...Read more

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Caffeine Use (Definition)

Caffeine is a stimulant. Recently may have adopted extremely high levels of caffeine which may cause heart palpitations, especially with young people who buy it at the gas stations. This may be dangerous. A regular cup of coffee in am is ok, but not ...Read more


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Is it safe to smoke after a myocardial perfusion scan thallium scan cardiac nuclear imaging?

Is it safe to smoke after a myocardial perfusion scan thallium scan cardiac nuclear imaging?

Well...: Since you had a cardiac nuclear scan, I assume your doctors were looking for coronary artery disease. You seem to be a smoker, which makes artery disease worse. So smoking is not a good thing for you, and you should try to stop. Having said that, you are probably not in any more immediate risk for heart problem for smoking after the nuclear exam. Long term risks are greater with smoking. ...Read more

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Can I eat food before having myocardial perfusion scan?

Can I eat food before having myocardial perfusion scan?

No: No because the blood flow to stomach increased and it makes the image less accurate. ...Read more

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What is the definition or description of: myocardial perfusion scan with exercise?

What is the definition or description of: myocardial perfusion scan with exercise?

Cardiac Exam: Myocardial perfusion imaging looks at blood flow to the left ventricle. This is primarily accomplished using nuclear techniques such as pet or spect using radiotracers such as tl-201, tc-99m, or n-13 ammonia. When it is done with exercise, the myocardial perfusion scan shows blood flow during exercise, and usually compares that to perfusion at rest in order to evaluate for inducible ischemia. ...Read more

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Are there any side affects after having a myocardial perfusion scan if so can you tell me please?

Are there any side affects after having a myocardial perfusion scan if so can you tell me please?

Radiation...: Depending on what radiotracer is used, you will be exposed to a small amount of radiation but the benefits of the test should outweigh the risks. Are you having pharmacologic or exercise test? Some of the pharmacologic agents can cause some side effects such as bronchoconstriction but a medication called aminophylline can usually be administered to reverse the side effects. ...Read more

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How does the radioactivity affect someone after the myocardial perfusion scan?

How does the radioactivity affect someone after the myocardial perfusion scan?

Cancer risk: It is important to remember that tests commonly done, such as myocardial perfusion scans, ct scans, and plain xrays, expose you to radiation. It adds up. There is an increased incidence of cancer many years later. We cannot practice medicine without those tests but they should only be performed when absolutely necessary. You should question the need for tests involving radiation exposure. ...Read more

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Could you tell me what is the purpose of a myocardial perfusion scan [nuclear test]?

Could you tell me what is the purpose of a myocardial perfusion scan [nuclear test]?

CAD: The purpose is to diagnose significant coronary artery disease (CAD). If the scan is positive for ischemic changes in the heart, then you will benefit from aggressive medical treatment, angiographic treatment, or surgery. If the scan is negative (and done properly), your risk for CAD or a significant injury such as a heart attack in the next few years is very low. ...Read more

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Could you have a myocardial perfusion scan after a cataract operation?

Could you have a myocardial perfusion scan after a cataract operation?

Yes: Modern day cataract surgery is minimally invasive and can even be done with just eye-drop (topical) anesthesia. While an implant (silicone or acrylic) is placed during the surgery, there are no restrictions on any future nuclear imaging, mri, ct scan etc.. ...Read more

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Is there any risk of radiation poisoning after myocardial perfusion scan?

Is there any risk of radiation poisoning after myocardial perfusion scan?

No: Radiation poisoning occurs at exposures of 1000 msv and greater (http://sgoti. Ws/plwzai). The radiation exposure from a myocardial perfusion scan is around 10 msv and has never been shown to be harmful, although it is recommended to only get medical imaging performed when appropriate in order to minimize any theoretical cumulative risks of radiation. ...Read more

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Is it safe to have a myocardial perfusion scan done without a cardiologist?

Is it safe to have a myocardial perfusion scan done without a cardiologist?

Probably: At some hospitals, physicians assistants are who is actually present during the study. As these tests usually involve some type of stressing of the heart, it is important that whoever is supervising the test has the knowledge to make the decision that the patient is stable and that it is safe. In most cases, a cardiologist has had some input in that decision even if not there for the test. ...Read more

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What are common side effects from the radioisotope in a myocardial perfusion scan?

None: There are no common side-effects from the radioisotope. There have been very rare reports of allergy. There is a theoretical, but unproven risk of the radiation inducing a cancer 10 to 20 years later. There also is a theoretical, but unproven risk of radiation myocarditis. The radiation exposure of 1 rem (about 10 msv) has not been shown to be harmful. See http://sgoti. Ws/qmhwh7. ...Read more

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Why would someone be scanned both front side and back during the myocardial perfusion scan?

Why would someone be scanned both front side and back during the myocardial perfusion scan?

Complete imaging: The heart is a 3 dimensional structure and the images are 2 dimensional. To completely visualize the entire heart, you need more than one view. Hard to fully describe the moon without flying around to the back side. ...Read more

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Is it safe to be around kids after a myocardial perfusion scan?

Is it safe to be around kids after a myocardial perfusion scan?

Small exposure: The doses of radiopharmaceuticals used for these scans are usually relatively low dose. However thallium (half life 2.7 days) gives more radiation than technetium sestamibi (half life 6 hrs).Radiation reduction depends mainly on two factors time and distance. If you do not stay close to child for prolonged time then radiation exposure is reduced. Growing children more sensitive to radiation. ...Read more

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Perfusion (Definition)

Perfusion usually refers to blood flow into an ...Read more