assess vital signs frequently, usually every 15 minutes, until the patient is stable. To prevent aspiration, check to ensure that the gag reflex has returned before offering fluids or food. Teach the patient and family to monitor for severe postprocedure complications at home, including cholangitis (gallbladder inflammation), perforation, sepsis, and pancreatitis. The patient has severe pain if any of these complications occur. Fever is present in sepsis. These problems do not occur immediately after the procedure but may take several hours to 2 days to develop. Colicky abdominal pain can result from air instilled during the procedure. Instruct the patient to report abdominal pain, fever, nausea, or vomiting that fails to resolve after returning home. Be sure that the patient has someone to drive him or her home if the test was done on an ambulatory basis.