Following a gastrointestinal study involving the administration of barium,the patient is usually instructed to take a(n):

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The tendency of barium to clump and harden in the bowel may cause constipation and, in severe cases, barium impaction with resulting bowel obstruction. To prevent these complications, patients may be instructed to take a laxative preparation, as well as to increase their intake of fluids and high-bulk foods.

Following a Gastrointestinal Study Involving the Administration of Barium,the Patient