Correct Answer: A

Rationale: A barium swallow is an x-ray study that uses a substance called barium for contrast to highlight abnormalities in the gastrointestinal tract. The client should fast for 8 to 12 hours before the test, depending on physician instructions. Most oral medications also are withheld before the test. After the procedure the nurse must monitor for constipation, which can occur as a result of the presence of barium in the gastrointestinal tract.

Correct Answer: D

Rationale: If nausea occurs and persists, the client will need to be assessed for fluid and electrolyte imbalance. Explaining to the client that the majority of calories should be eaten in the morning hours is important because nausea occurs most often in the afternoon and evening. Clients should select a diet high in calories because energy is required for healing. Protein increases the workload on the liver. Changes in bilirubin interfere with fat absorption, so low-fat diets are tolerated better.

Correct Answer: B

Rationale: Crohn's disease is characterized by nonbloody diarrhea of usually not more than four to five stools daily. Over time, the diarrhea episodes increase in frequency, duration, and severity. Chronic constipation (Choice A), constipation alternating with diarrhea (Choice C), and stool constantly oozing from the rectum (Choice D) are not characteristics typically associated with Crohn's disease.

Correct Answer: B

Rationale: An abdominal ultrasound is the most commonly used test to diagnose cholecystitis.

Correct Answer: B

Rationale: Pain from cholecystitis is typically located in the right upper quadrant and may radiate to the right scapula and shoulder.