The risks of a nuclear stress test include a flushing sensation or chest pain, allergic reaction to the radioactive dye injected into the vein of the hand or arm, abnormal heart rhythm and heart attack, according to Mayo... More » Health Diagnostics & Imaging

A nuclear stress test is usually safe and only rarely causes complications, according to Mayo Clinic. Some of the most common risks associated with this medical procedure include arrhythmia, heart attack, chest pain and ... More » Health Conditions & Diseases Cardiac Health

A nuclear cardiac stress test shows how blood flows through the heart and heart muscle, states Mayo Clinic. A radioactive dye is injected into the bloodstream, and X-ray images of the heart are taken while the patient is... More » Health Diagnostics & Imaging
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When the heart rate doesn't decrease after a nuclear stress test, this may be caused by complications such as allergic reaction to radioactive dye, abnormal heart rhythms due to medication, or a heart attack, according t... More » Health Diagnostics & Imaging

Patients preparing for a nuclear stress test should not eat, drink or smoke for at least two hours prior to the procedure, according to Mayo Clinic. In some cases, doctors may ask patients to avoid caffeine and certain m... More » Health Diagnostics & Imaging

Results from a nuclear stress test show either normal blood flow, low blood flow or no blood flow, explains Mayo Clinic. The interpretation of these results has different implications for the patient. More » Health Diagnostics & Imaging

Doctors use the images from a nuclear stress test to measure blood flow to a patient's heart before and after exercise, and in some cases before and after taking medications, notes Mayo Clinic. They conduct the test by i... More » Health Diagnostics & Imaging