Food and fluid are restricted 6 to 8 hours before the test. The procedure takes place in the hospital and you will be asked to wear a hospital gown. Sometimes, admission the night before the test is required. Otherwise, you will be admitted as an outpatient or an inpatient the morning of the procedure.
Your health care provider should explain the procedure and its risks. A witnessed, signed consent for the procedure is required.
Tell your doctor if you are allergic to seafood, if you have had a bad reaction to contrast material in the past, if you are taking Viagra, or if you might be pregnant.
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