What Is a Nuclear Stress Test?
Apr 18, · What Are The Side Effects Of A Nuclear Stress Test? Side Effects Which can be Expected after Injecting Pharmacological Stress Inducing Medications Include the following: Headache; Flushing of the face; Breathing difficulty, aspecially in asthma patients; Rarely can trigger a heart attack; A headache after nuclear stress test, though experienced only in few individuals. This is the commonest side effect and intake of caffeine containing beverages like coffee will zi255.comted Reading Time: 3 mins. One of the side effects that the person suffers from is chest pain or a discomfort in the heart, immediately after the nuclear stress test. This happens due to increased pressure or pumping of the blood into the heart due to physical exertion.» Erratic Heart RateEstimated Reading Time: 5 mins.
Nuclear stress test involves injecting small amounts of radioactive material into what day was august 5 2006 cardiac muscle.
This is the reason, niclear patients often wonder about some of the possible nuclear stress test risks. The following article given below will cover information related to the accuracy and side effects of a nuclear stress test procedure. Nuclear stress test is used to measure the blood flow to the heart. This test is also known as myocardial perfusion scan. The nuclear stress scan helps in evaluating coronary heart disease CADmyocardial wall motion abnormalities and many other heart ailment.
This is a non-invasive procedure that requires ars injections of the radioactive material. This radioactive material is called radiopharmaceuticals or radiotracers. As radioactive material is used, one is often worried about nuclear stress test risks.
This is safe procedure as how to make a boutonnieres radioactive material used is in very minute quantities that are considered safe to use. However, we shall go into the details of some of the possible nuclear stress test side effects, one may develop.
The nuclear stress test procedure involves injection of a tracer into the arm that will travel down to the heart. This tracer emits gamma rays that are detected by a special camera. This information detected is transferred to the computer that produces clear images of the or. These images help the doctor detect any form of obstruction in blood flow or damage to cardiac muscles.
The tracers used are thallium or sestamibi. Thus, it is also known effexts a thallium test or sestamibi test. This test may be performed after you exercise as certain problems show up only after the heart is under physical stress.
Would you like to write for nclear Well, we're looking for good writers who want to spread the word. Get in touch with us and we'll talk About to 4 hours before the procedure one should not smoke, drink or eat anything. Caffeine should be avoided for at least 24 hours. Pregnant women should not undergo this test. Speak to your doctor about any other additional precautions to followed to nuclar nuclear stress test risks. The lab technician will tape wires to your body that are connected to aer ECG machine.
You will be asked to walk or run on a treadmill. Then, he will inject the radioactive tracer intravenously into your arm. Now, you will be made to lie down on the scanner bed with arms placed overhead. A large camera will be positioned above you to take multiple images. After about 30 minutes, when the heart rate is back to normal, more images will be taken. Thus, the doctor will have images of how blood what does the medical term prn stand for during rest and the way the heart performs nuclaer exertion.
A nuclear stress test is a safe procedure and complications arising due to the procedure are very rare. However, some of the possible risks hwat as follows:. In extremely rare cases, the patient injected with radioactive tracer is found to be allergic to the compound.
Thus, one may develop skin rashes during the nuclear stress test. Exercising during the stress test can lead to abnormal heart rhythms in some people. However, nuclea arrhythmias may disappear soon after one stops the exercise. Exercising may also cause low blood pressure in some patients. The patient complains of fatigue and may even faint. During the test, one may feel flustered or develop chest pain.
These symptoms are usually temporary and effectx resolve after some time. In very rare occasions, the patient exercising for the test may suffer from a sudden myocardial infarction. This is a what are the three main sub regions in asia, very rare complication of a nuclear stress test.
These are some of the nuclear stress test risks that sude only in a few rare occasions. If one is worried about the adverse hte of getting injected with a radioactive material, then there is no reason to be tye.
Studies have found this test does not carry any long-term or short-term effects due to the radioactive trace. After the test, you can eat and drink anything you like. It is better to take in plenty of fluids as it will help flush out the tracer from the body sooner. Nuclear stress test accuracy is same for men and women. However, obese or large breasts patients may sometimes get a false positive test. For further queries, streess your health care provider for more details.
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It is mandatory to procure user consent prior to running these cookies on your website. Skip to primary navigation Skip to main content Skip to primary effect Skip to footer Nuclear Stress Test Risks Nuclear stress shress involves injecting small amounts of radioactive material into the cardiac muscle.
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What Does A Nuclear Stress Test Show?
Jun 08, · Besides headaches, certain number of people experienced nausea and/or dizziness. Immediately after the test, patients have reported discomfort and pain in the chest. Metal taste in the mouth is another possible side effect of nuclear stress test reported in small number of zi255.comted Reading Time: 2 mins. Feb 22, · A nuclear stress test can show whether the heart is healthy and how much blood reaches it. During the test, a person may be asked to exercise or rest, and they are injected with a Author: Yvette Brazier. Nuclear Stress Test Side Effects. A nuclear stress test is a safe procedure and complications arising due to the procedure are very rare. However, some of the possible risks are as follows: Allergic reaction. In extremely rare cases, the patient injected with radioactive tracer is found to be allergic to the zi255.comted Reading Time: 4 mins.
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A nuclear stress test is a study aimed at measuring whether the blood flow to your heart muscle is normal or abnormal. The study utilizes a radioactive tracer to create an image of how well blood is reaching your heart muscle, both during exercise and while at rest. If you are unable to exercise, or your doctor thinks exercise is not a good idea for you, this study can still be performed by giving you a medication that produces the same kind of cardiovascular stress that is caused by exercise.
The nuclear stress test is most often used to estimate the severity of any blockages that might be present due to coronary artery disease. This study is generally thought to be the most accurate non-invasive method for diagnosing coronary artery blockages. In many cases, doing a nuclear stress test can make it unnecessary to perform an invasive cardiac catheterization.
The nuclear stress test is most often performed to help diagnose whether coronary artery disease is the cause of unexplained symptoms, especially episodes of chest pain or dyspnea.
If coronary artery blockages are present, this test can also help the doctor judge the severity of the blockages. In people who are already known to have coronary artery disease, the nuclear stress test is often also quite helpful in developing an optimal treatment plan. People who are being treated for coronary artery disease, whether with medication or a stent , will often have nuclear stress testing both to help judge the effectiveness of the therapy, and to get the information needed to provide objective advice about daily activities and exercise.
What the Test Assesses. The idea of nuclear stress testing is to create two images of how blood is being distributed to the cardiac muscle—one during rest, and one during exercise. Normally, the blood should be evenly distributed to the heart muscle both at rest and while exercising, and the images will show this even distribution.
If both the rest and the exercise images show a fixed patch of poor blood flow, that indicates that a prior heart attack has occurred. If an area of poor blood flow is identified during stress testing that is not present during rest, that indicates that a blockage is likely in one of the coronary arteries that is producing a transient drop in blood flow. So this test enables the doctor to detect the presence, location, and relative size of a prior heart attack; and the presence, location, and relative size of any blockages in the coronary arteries that are significant enough to impede blood flow during exercise.
The Radioactive Tracer. The choice of the optimal radioactive tracer for creating a useful image during a nuclear stress test has evolved over the years. In the past, thallium Tl was most commonly used. Today, that has largely been replaced by technetium Tc , which can provide clearer images with less radiation exposure.
Rest and Exercise Images. Most labs are now routinely doing one-day nuclear stress testing. A resting image is performed first with a relatively small dose of Tc, followed a few hours later by stress imaging using a much larger dose. There are technical challenges to performing one-day testing, but these are often offset by avoiding the practical challenges largely, to the patient of two-day testing. The resting image is performed by injecting the Tc tracer intravenously, then making the image by scanning the chest with a special camera called a gamma camera.
The exercise image is performed by injecting the tracer during peak exercise. In both cases, the gamma scan should be done between 15 - 60 minutes after the tracer is injected.
In People Who Cannot Exercise. In people who are capable of performing adequate levels of exercise, exercise stress testing usually on a treadmill, sometimes on a stationary bicycle is the preferred method for performing a nuclear stress test. Because of physical limitations, however, some people who need nuclear stress testing cannot perform this exercise.
If you have such physical limitations, pharmacologic stress testing can be substituted for exercise stress testing. In general, vasodilators are preferred, but your doctor will choose the optimal pharmacologic agent for you if actual exercise is not an option.
When it is performed by experienced personnel, the nuclear stress test is quite safe. Life-threatening complications are estimated to occur only in 1 out of every 10, exercise tests that are done. To minimize the risk of serious complications, some people should not have nuclear stress testing. A typical nuclear stress test using the radioactive tracer Tc will expose you to 11 millisieverts of radiation. This is about 3 times the dose of radiation you get from living a normal life for one year.
It is considered a small amount, and by itself should not increase your lifetime risk of cancer by any measurable amount. Knowing these details can help ease any anxiety you have about this test. Timing and Location. Your doctor will discuss with you when and where the test will be performed. Most nuclear stress tests are performed in a hospital outpatient area.
You will probably be asked to show up at least 30 minutes before the scheduled test and can expect to be there for at least four hours. What to Wear. Since you will be probably walking on a treadmill or riding an exercise bike, you should bring comfortable, loose-fitting clothing and comfortable shoes. Many people will bring gym clothing with them, along with walking or running shoes. Most testing facilities offer a convenient place to change out of and back into your street clothing.
Food and Drink. You will be asked to avoid food, drink, and smoking for 4 to 6 hours before your test. It is also important to avoid caffeine for at least 24 hours before the test. You should ask your doctor which of your prescription medications you should take on the day of testing, and which not to take. If you have diabetes, you should be given specific instructions on how to take your medications on the day of the test.
You should also avoid taking any over-the-counter medications before the test unless you clear it first with your doctor. Cost and Health Insurance. The nuclear stress test is relatively expensive, but its cost varies quite a bit from place to place, and also according to what type of insurance you have.
Most medical insurance covers the nuclear stress test as long as a qualified cardiologist certifies that you need it—but you may want to check with your insurance company prior to testing just to be sure.
What to Bring. You are likely to spend at least a few hours of downtime during the testing process, so bring a book or a magazine to help you occupy your time.
Other Considerations. If at all possible you should bring a family member or a friend who can help you pass the time, and possibly, who can sit in with you and your doctor if you expect to get the test results on the day of testing. After you arrive for testing, you will be interviewed by one of the healthcare team to see whether your symptoms or medical condition has changed since you last saw your doctor, and you will have a quick physical exam.
You will also be instructed once again as to what to expect during the test and will be given an opportunity to ask any additional questions you may have. Throughout the Test. To make the resting cardiac image, a technician will insert an intravenous line into one of your veins, and a small amount of the radioactive tracer will be injected.
After about 20 minutes, you will be lying down under a gamma camera for 15 to 20 minutes while an image is made that shows how blood is being distributed to your heart muscle. While you are under the gamma camera, you will need to keep your arms up above your head, and you will have to lie still.
The exercise part of the study will be done later the same day if you are having a one-day test. If you are having a two-day test, generally the exercise portion of the study is done on the first day, and the resting portion is done the next. For the exercise study, a technician will place electrodes on your chest so that an ECG can be recorded during exercise, and unless you are having a one-day test and an IV has already been placed , an IV line will be started.
You will begin walking on the treadmill or pedaling a stationary bicycle at a very slow pace at first. Every three minutes the level of exercise will be increased until you become fatigued, develop symptoms, or your target heart rate is reached. When you have achieved the maximum level of exercise you are being asked to do, the radioactive tracer will be injected into your IV, and you will stop exercising.
Your ECG and vital signs will be monitored throughout the exercise and recovery periods. The exercise itself usually lasts for no more than 6 to 12 minutes. Roughly 20 to 30 minutes after you have finished exercising, you will again lie under the gamma camera for 20 minutes or so, with your arms above your head, so the exercise cardiac image can be made.
Most people are instructed to resume their normal meals, medications, and activities immediately after the study is ended. The amount of radiation you receive with nuclear stress testing is considered very small, and there are no special precautions you will need to take in this regard. Testing centers vary on how the results of nuclear stress testing are communicated to the patient.
Most laboratories will give you some indication of the results right away, at least to the extent of telling you whether the study has shown findings of immediate concern. If so, you will be given advice on what to do next. Most often, however, the test is not immediately alarming, and formal results will not be available until the images are officially reviewed by a cardiologist.
In this case, you will be instructed to contact your referring doctor for the results and to discuss what, if anything, should be the next steps.
Managing Side Effects. Except for a bit of fatigue from performing the exercise, you should expect no side effects at all. The nuclear stress test is aimed at measuring whether blood flow to all areas of the heart muscle is sufficient, both during rest and during exercise. While the interpretation of the resting and exercise images has to be individualized, and while you will need to talk to your own doctor about the specific findings of the test in your own case, in general, the results of a nuclear stress test fall into three categories.
Both the resting and exercise cardiac images are normal.