Patient Care - Adult cardiac, endovascular, and thoracic aortic surgery
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Nuclear ventriculography (MUGA or RNV): During the MUGA test, a radioactive isotope is injected into the vein. Radioactive isotopes attach to red blood cells and pass through the heart in the circulation. The isotopes can be traced through the heart using special cameras or scanners. The test is often given at rest, then repeated with exercise, or after administering certain medications. The test is performed to detect certain heart conditions.
The test may be performed to detect a heart attack, to evaluate those at risk of coronary artery disease without invasive testing (coronary angiography and heart catheterization), and to evaluate heart wall motion and pumping function of the heart.
How the test is performed: A radioactive isotope is injected into your vein. Commonly used isotopes include technetium and thallium. Radioactive isotopes attach to red blood cells and pass through the heart in the circulation. The radioactive isotope can be traced through the heart using special cameras or scanners. The images may be synchronized with an electrocardiogram. The test is often given at rest then repeated with exercise or after administering certain medications.
Results: Normal results indicate normal heart valve and chamber structure and function, or a normal cardiac response to exercise.
Abnormal results may indicate a myocardial infarction, coronary artery disease, heart valve disease, or other cardiac disorders.