DIAGNOSTIC PROCEDURES
There are many diagnostic procedures that can help doctors make a rapid, precise diagnosis. They include electrocardiography (ECG), stress testing, electrophysiologic testing, tilt table testing, radiologic procedures (x-rays), ultrasonography (including echocardiography), magnetic resonance imaging (MRI), radionuclide imaging, positron emission tomography (PET), cardiac catheterization, central venous catheterization, angiography, and computed tomography (CT). Fluoroscopy is used infrequently. Blood tests to measure levels of sugar (to test for diabetes), cholesterol, and other substances are often performed.
Most of these procedures carry very small risk, but the risk increases with the complexity of the procedure and the severity of the heart disorder.



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