ATI RN
Gastrointestinal System ATI
1. The student nurse is participating in colorectal cancer-screening program. Which patient has the fewest risk factors for colon cancer?
- A. Janice, a 45 y.o. with a 25-year history of ulcerative colitis
- B. George, a 50 y.o. whose father died of colon cancer
- C. Herman, a 60 y.o. who follows a low-fat, high-fiber diet
- D. Sissy, a 72 y.o. with a history of breast cancer
Correct answer: C
Rationale: Herman, a 60 y.o. who follows a low-fat, high-fiber diet, has the fewest risk factors for colon cancer.
2. Which of the following techniques would the nurse use first to determine if a nasogastric tube is positioned in the stomach?
- A. Aspirating with a syringe and observing for the return of gastric contents.
- B. Irrigating with normal saline and observing for the return of solution.
- C. Placing the tube's free end in water and observing for air bubbles.
- D. Instilling air and auscultating over the epigastric area for the presence of the tube.
Correct answer: A
Rationale: The initial way to determine if a nasogastric tube is in the stomach is to apply suction to the tube with a syringe and observe for the return of stomach contents. Then the pH of the aspirate can be measured. This is the method of choice. One would not irrigate until tube placement is confirmed. Observing for air bubbles when the free end of the tube is placed under water is an unacceptable, unsafe method of determining tube placement. Another method is to instill air into the tube with a syringe while auscultating over the epigastric area. Hearing the air enter the stomach helps ensure proper placement, but the method is not foolproof and is no longer considered an effective or preferred way to determine placement.
3. A client with a peptic ulcer is scheduled for a vagotomy. The client asks the nurse about the purpose of this procedure. The nurse tells the client that the procedure:
- A. Decreases food absorption in the stomach
- B. Heals the gastric mucosa
- C. Halts stress reactions
- D. Reduces the stimulus to acid secretions
Correct answer: D
Rationale: A vagotomy reduces the stimulus to acid secretions by cutting the vagus nerve, which innervates the stomach.
4. Which of the following diagnostic tests may be performed to determine if a client has gastric cancer?
- A. Barium enema
- B. Colonoscopy
- C. Gastroscopy
- D. Serum chemistry levels
Correct answer: C
Rationale: A gastroscopy is performed to visualize the stomach lining and obtain biopsies to diagnose gastric cancer.
5. Glenda has cholelithiasis (gallstones). You expect her to complain of:
- A. Pain in the right upper quadrant, radiating to the shoulder.
- B. Pain in the right lower quadrant, with rebound tenderness.
- C. Pain in the left upper quadrant, with shortness of breath.
- D. Pain in the left lower quadrant, with mild cramping.
Correct answer: A
Rationale: Patients with cholelithiasis often complain of pain in the right upper quadrant, radiating to the shoulder.
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