Nuclear Stress Test
A nuclear stress test evaluates blood flow to the heart during stress and at rest. During the test, a small amount of radioactive tracer is administered through an IV, and specialized images of your heart are taken to help identify areas of reduced blood flow or heart damage.
For patients who are unable to exercise on a treadmill, a medication called Lexiscan® (regadenoson) may be used to simulate the effects of exercise on the heart.
HOW TO PREPARE
Do not eat or drink for 6 hours before your test.
Avoid caffeine for 24 hours before your test, including coffee, tea, soda, chocolate, energy drinks, and certain medications.
Do not use tobacco products, nicotine pouches, or vape for 24 hours before your appointment.
Hold beta blockers only if instructed by your provider.
Bring a light jacket or sweater, as exam rooms may be cool.
Bring a snack to eat after the exam.
Bring your inhaler or oxygen if you use them.
If you are breastfeeding, notify your provider. Special instructions may be needed following the test.
Wear comfortable walking shoes and loose-fitting clothing. Avoid one-piece outfits such as dresses.
WHAT TO EXPECT
An IV will be placed to administer the radioactive tracer. Images of your heart will be taken both at rest and during stress, either through exercise on a treadmill or with Lexiscan® medication. Electrodes will be placed on your chest to monitor your heart rhythm throughout the test. Depending on the protocol used, the exam may take 1-2 hours to complete.
AFTER THE TEST
You can return to your normal activities unless otherwise instructed by your provider. Drinking plenty of fluids after the test may help clear the tracer from your body. A cardiologist will review the results and discuss any findings with you.
QUESTIONS
If you have questions about your upcoming nuclear stress test, please contact our office. Our team can help you prepare for your appointment and explain what to expect.