How long does radioactive isotope stay in your body?
The half-lives of radioisotopes used in medicine range from a few minutes to a few days. For example, rubidium-82, which is used for myocardial perfusion imaging has a half- life of 1.26 minutes, while iodine-131, used in thyroid treatment and diagnosis, has a half- life of eight days.
What should I avoid after a nuclear stress test?
Do not eat chocolate or drink coffee, tea, soda, colas or other caffeinated beverages such Mountain Dew or energy drinks. If you are unsure, do not drink it. See the table below for more details. The table below also has a list of medications containing caffeine.
Does a nuclear stress test damage kidneys?
There are no side effects from the radioactive tracer. It is not a contrast dye. It does not contain iodine and will not harm your kidneys. Nuclear stress testing, is very safe and can help your cardiologist accurately diagnosis heart disease.
What are the after effects of a nuclear stress test?
Possible complications and side effects include:
- allergic reaction to the dye.
- abnormal heart rhythms, or arrhythmias.
- fall in blood pressure during or after exercise, possibly leading to dizziness or faintness.
- chest pain.
- nausea.
- trembling.
- headache.
- flushing.
Why would a doctor order a nuclear stress test?
The test is done to see if your heart muscle is getting enough blood flow and oxygen when it is working hard (under stress). Your provider may order this test to find out: How well a treatment (medicines, angioplasty, or heart surgery) is working. If you are at high risk for heart disease or complications.
Can you drive yourself home after a nuclear stress test?
The nurse will help you with them after you are awake. You will not be allowed to eat or drink until the medicine used to numb your throat wears off. This usually takes 30 to 60 minutes. You may not drive yourself home after your test.
Does a nuclear stress test show blocked arteries?
The test can show the size of the heart’s chambers, how well the heart is pumping blood, and whether the heart has any damaged or dead muscle. Nuclear stress tests can also give doctors information about your arteries and whether they might be narrowed or blocked because of coronary artery disease.
Can a nuclear stress test show a previous heart attack?
If your stress test images show areas of the heart that are not highlighted with the radioactive isotope, it may also be an indication of scar or damaged tissue caused by a previous heart attack. Regardless of the results, your doctor will explain the findings and address your concerns.
How accurate is a nuclear stress test?
The nuclear stress test is generally considered to be the most accurate type of stress test. It has a sensitivity of about 81%, meaning that it will miss about 19% of high-grade blockages.