How long does it take to do a lexiscan stress test?
This takes about 15 minutes. Next, the technician injects Lexiscan through the IV line. You will either walk slowly on a treadmill (if you are able) or rest on a bed or chair. The technician injects more nuclear imaging material.
If a patient has blockage of the blood flow to the heart or if they've had a heart attack in the past, it will show up," says Mieres. Nuclear stress tests are 90% accurate, compared with exercise stress tests, which are about 75% accurate for men and just over 60% accurate for women.
- A physician may recommend an exercise stress test to: Diagnose coronary artery disease. Diagnose a possible heart-related cause of symptoms such as chest pain, shortness of breath or lightheadedness. Determine a safe level of exercise.
- A patient should allow approximately two to four hours for the entire test, including the preparation. Dual isotope and technetium stress testing takes less time than thallium. The first part of the test generally takes an hour. The second part takes anywhere from 15 to 30 minutes.
- While the exercise stress test itself usually takes around 10 or 15 minutes, part one of the test takes about 30 or 45 minutes total. Dr. Willke suggests blocking off most of your morning, because you will need to go in for follow-up photos about two hours later, for the second part of the test.
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.
- Results from this imaging can help diagnose heart disease, evaluate the severity of heart conditions, and help guide treatment plans. Although nuclear stress tests are generally safe, patients undergoing these tests are exposed to radiation, which can slightly increase cancer risk.
- If there are no defects then the study is normal. A dual isotope stress or a one day Sestamibi test may take up to three to three and a half hours. A two day Sestamibi test will take about one hour and a half for the stress and about an hour for the rest part.
- If a patient has blockage of the blood flow to the heart or if they've had a heart attack in the past, it will show up," says Mieres. Nuclear stress tests are 90% accurate, compared with exercise stress tests, which are about 75% accurate for men and just over 60% accurate for women.
Updated: 2nd October 2019