ATI RN
Gastrointestinal System Nursing Exam Questions
1. 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.
2. The nurse aspirates 40 mL of undigested formula from the client’s nasogastric tube. Before administering an intermittent tube feeding, the nurse understands that the 40 mL of gastric aspirate should be
- A. Discarded properly and recorded as output on the client’s intake and output record.
- B. Poured into the nasogastric tube through a syringe with the plunger removed.
- C. Mixed with the formula and poured into the nasogastric tube through a syringe with the plunger removed.
- D. Diluted with water and injected into the nasogastric tube by putting pressure on the plunger.
Correct answer: B
Rationale: After checking the residual feeding contents, the gastric contents are reinstalled into the stomach by removing the syringe bulb or plunger and pouring the gastric contents into the syringe and through the nasogastric tube. Gastric contents should be reinstalled to maintain the client’s electrolyte balance. The gastric contents should be poured into the nasogastric tube through a syringe without a plunger and not injected by putting pressure on the plunger. Gastric contents do not need to be mixed with water or should the contents be discarded.
3. When assessing the client with celiac disease, the nurse can expect to find which of the following?
- A. Steatorrhea
- B. Jaundiced sclerae
- C. Clay-colored stools
- D. Widened pulse pressure
Correct answer: A
Rationale: Because celiac disease destroys the absorbing surface of the intestine, fat isn't absorbed but is passed in the stool. Steatorrhea is bulky, fatty stools that have a foul odor. Jaundiced sclerae result from elevated bilirubin levels. Clay-colored stools are seen with biliary disease when bile flow is blocked. Celiac disease doesn't cause a widened pulse pressure.
4. The nurse is caring for a client admitted to the hospital with a suspected diagnosis of acute appendicitis. Which of the following laboratory results would the nurse expect to note if the client indeed has appendicitis?
- A. Leukopenia with a shift to the right
- B. Leukocytosis with a shift to the right
- C. Leukocytosis with a shift to the left
- D. Leukopenia with a shift to the left
Correct answer: C
Rationale: Laboratory findings do not establish the diagnosis of appendicitis, but often moderate elevation of the white blood cell count (leukocytosis) to 10,000 to 18,000 cells/mm3 occurs with a “shift to the left” (an increased number of immature white blood cells.).
5. A nurse is providing the client with biliary obstruction a simple overview of the anatomy of the liver and gallbladder. The nurse tells the client that normally the liver stores bile in the gallbladder, which is connected to the liver by the?
- A. Liver canaliculi
- B. Common bile duct
- C. Cystic duct
- D. Right hepatic duct.
Correct answer: C
Rationale: The gallbladder receives bile from the liver through the cystic duct. The liver collects bile in the canaliculi. Bile then flows into the common hepatic duct. From the common hepatic duct, the bile can be stored in the gallbladder through the cystic duct. Otherwise, the bile can flow directly into the duodenum by way of the common bile duct.
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