ATI RN
Gastrointestinal System Nursing Exam Questions
1. The nurse assesses the client's understanding of the relationship between body position and gastroesophageal reflux. Which response would indicate that the client understands measures to avoid problems with reflux while sleeping?
- A. I can elevate the foot of the bed 4 to 6 inches.
- B. I can sleep on my stomach with my head turned to the left.
- C. I can sleep on my back without a pillow under my head.
- D. I can elevate the head of the bed 4 to 6 inches.
Correct answer: D
Rationale: Sleeping with the head of the bed elevated encourages movement of food through the esophagus by gravity. By fostering esophageal acid clearance, gravity helps keep the acidic pepsin and alkaline biliary secretions from contacting the esophagus. Elevating the foot of the bed does not affect clearance of esophageal acid. Sleeping on the stomach with the head turned to the left will not decrease reflux incidence. Sleeping flat without a pillow under the head does not enhance clearance.
2. A 30-year-old woman is admitted to the hospital with complaints of severe abdominal cramping and diarrhea. The nurse evaluates the effectiveness of the patient's intravenous therapy. Which of the following laboratory tests BEST reflects hydration status?
- A. Erythrocyte sedimentation rate.
- B. White blood cell count.
- C. Hematocrit.
- D. Serum glucose.
Correct answer: C
Rationale: Hematocrit is the best indicator of hydration status because it reflects the proportion of red blood cells in the blood. An increased hematocrit indicates dehydration, as the blood becomes more concentrated due to fluid loss. Erythrocyte sedimentation rate (Choice A) is a nonspecific marker of inflammation, not hydration status. White blood cell count (Choice B) is an indicator of infection or inflammation. Serum glucose (Choice D) is used to monitor blood sugar levels, not hydration status.
3. Lactulose (Chronulac) is prescribed for a client with a diagnosis of hepatic encephalopathy. The nurse would determine that this medication has had a therapeutic effect if which of the following is noted?
- A. Increased red blood cell count
- B. Decreased serum ammonia level
- C. Increased protein level
- D. Decreased white blood cell level
Correct answer: B
Rationale: Lactulose is prescribed for the client with hepatic encephalopathy to reduce bacterial breakdown of protein in the bowel. The medication creates an acidic environment in the bowel and causes the ammonia to leave the bloodstream and enter the colon. Ammonia then becomes trapped in the bowel. Lactulose also has a laxative effect that allows for the elimination of the ammonia.
4. A 53 y.o. patient has undergone a partial gastrectomy for adenocarcinoma of the stomach. An NG tube is in place and is connected to low continuous suction. During the immediate postoperative period, you expect the gastric secretions to be which color?
- A. Brown.
- B. Clear.
- C. Red.
- D. Yellow.
Correct answer: C
Rationale: During the immediate postoperative period after a partial gastrectomy, gastric secretions are expected to be red.
5. Your patient has a GI tract that is functioning, but has the inability to swallow foods. Which is the preferred method of feeding for your patient?
- A. TPN
- B. PPN
- C. NG feeding
- D. Oral liquid supplements
Correct answer: C
Rationale: NG feeding is the preferred method for patients with a functioning GI tract but an inability to swallow foods.
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