thallium, sestamibi stress tests…

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what the risks are nuclear scan, anterior heart arteries, sestamibi, thallium stress tests, mibi stress test, thallium, sestamibi stress tests, nuclear imaging methods that provide a view, the blood flow, heart muscle, thallium, sestamibi tests, "mibi stress test", "myocardial perfusion scintigraphy", evaluate, how well heart is perfused, supplied, blood, at rest, compared, heart images, the patient receives an injection of a substance that is labeled, a radioactive marker, radiotracer to make it visible, in the bloodstream, radiopharmaceuticals, thallium-201, technetium-99m mibi, sestamibi, in comparison, standard treadmill stress test, thallium, sestamibi stress tests, more accurate, provide additional information, special room, lab at a health, instructed to exercise, on a treadmill, bicycle, doctor considers that exercise is not safe, unable to exercise enough, orthopedic problems, given an intravenous medication, challenge heart, were exercising, reach maximum level of exercise, a nurse, inject in vein a small amount, a radioactive substance, radiotracer, either thallium, sestamibi, radiotracer, travel, in the bloodstream, the coronary arteries, enter, heart muscle, complete exercise session, after finish exercising, lie down on a special table under a bulky camera, a gamma camera, gamma camera, scan heart, detect the radiotracer, distribution, the radiotracer in heart, processed by a computer to create pictures of heart, first pictures, made shortly, exercise test, circulation of blood to heart, exercise, considered "a stress test", challenging, heart, lie quietly, 2-3 hours, the scanner, make another series, pictures of heart, images, circulation of blood, heart muscle at rest, doctor has indicated, exertion, beginning, not exercise, receive an intravenous medication, a vasodilator, dipyridamole, adenosine, selectively dilate, widen, coronary arteries, arteries, blockages, receive less blood flow, less dilated, allowing less blood flow, heart muscle, after this initial medication, receive the injection, the radiotracer, test done using a vasodilator, potentially show a defect, in the same way, , wear comfortable clothes, shoes, non-skid soles, asked not to eat, drink after midnight, few sips of water, take medicines, one entire day, required to abstain from caffeine, certain medications, caffeine is in food, beverages all regular, decaffeinated coffees, teas, chocolate products, many sodas, certain pain relievers, labels of food, beverages, caffeine consumed, invalidate the test results, medications, stop taking, asthma medicines, medicines, chest pain, angina, check, take insulin to control blood sugar, ask physician, how much insulin should take the day, entire nuclear imaging test, 4 hours, prepare accordingly, stay, likely be given a long break, allowed to have lunch, a snack, cafeteria, not be sedated, once the test is completed, able to drive yourself home, feel the same symptoms, a regular stress test, a session of strenuous exercise, fatigue, muscle cramps in legs, feet, shortness of breath, chest pain, not be exercising but, receiving a vasodilator injection, feel a sting, the medication goes, iv, followed by a feeling of warmth, patients also develop a headache, nausea, the symptoms appear, let the lab personnel know, thallium, sestamibi stress tests, doctor needs to evaluate, how well heart responds to exercise, cause of chest pains, degree of blockage in coronary arteries, what to expect after, a heart attack, how well a heart procedure, improve blood flow in coronary arteries is working, a normal amount, the radiotracer arrives into all areas, the heart, heart images, heart images at peak exercise, compared, heart images at rest, exercise, rest all images, blood flow, the coronary arteries, considered to be normal, in heart pictures, an area, lack the radiotracer, a spot of a different color, a "defect", defects represent poor uptake, the radiotracer by the heart, reduced blood flow, a defect occurs at peak exercise, not at rest, most likely cause, significant blockage of a coronary artery, a defect is observed both at rest, exertion, indicates that previous damage, a heart attack has occurred, heart muscle has a scar, nuclear imaging stress tests, very safe, estimated risk of complications, 1 in 1,000 to 1 in 2,000 cases, complications involve rare skin rashes, large fluctuations in blood pressure, arrhythmias, difficulty breathing, asthma-like reactions, additional risks, apply specifically to you, explained to in advance by doctor, by the health care provider performing the test, radiation exposure to radiotracers, a concern, the nuclear lab staff, patients undergoing, nuclear imaging test, sometimes a thallium, sestamibi test produces heart image that looks, a defect, a pseudo-defect, a "false positive" test result, a falsely abnormal test, due to interference, the heart image from non-heart tissues the diaphragm, diaphragm attenuation, in women, breast tissue, "breast attenuation", non-heart tissue attenuation is clearly the cause of an abnormal image, nothing additional needs to be done, an attenuated image instead is thought to coincide, a true defect, area of ischemia, reduced blood flow, recommend additional testing stress echocardiogram, a cardiac catheterization.