ATI RN
ATI Gastrointestinal System
1. A nurse is caring for a client diagnose with pancreatitis. The nurse anticipates that the client would not experience an elevation of which of the following enzymes?
- A. Lipase
- B. Lactase
- C. Amylase
- D. Trypsin
Correct answer: B
Rationale: Lactase is produced in the small intestine and aids in splitting neutral fats into glycerol and fatty acids. Lipase, amylase, and trypsin are produced in the pancreas and aid in the digestion of fats, starches, and proteins, respectively.
2. Which of the following tests is most commonly used to diagnose cholecystitis?
- A. Abdominal CT scan
- B. Abdominal ultrasound
- C. Barium swallow
- D. Endoscopy
Correct answer: B
Rationale: An abdominal ultrasound is the most commonly used test to diagnose cholecystitis.
3. A client with suspected gastric cancer undergoes an endoscopy of the stomach. Which of the following assessments made after the procedure would indicate the development of a potential complication?
- A. The client complains of a sore throat
- B. The client displays signs of sedation
- C. The client experiences a sudden increase in temperature
- D. The client demonstrates a lack of appetite
Correct answer: C
Rationale: A sudden increase in temperature after an endoscopy can indicate a potential complication, such as perforation.
4. The client being seen in a physician’s office has just been scheduled for a barium swallow the next day. The nurse writes down which of the following instructions for the client to follow before the test?
- A. Fast for 8 hours before the test.
- B. Eat a regular supper and breakfast.
- C. Continue to take all oral medications as scheduled.
- D. Monitor own bowel movement pattern for constipation
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.
5. A client with liver dysfunction has low serum levels of thrombin. The nurse provides care, anticipating that this client is most at risk of
- A. Dehydration
- B. Malnutrition
- C. Bleeding
- D. Infection
Correct answer: C
Rationale: Thrombin is produced by the liver and is necessary for normal clotting. When a client with liver dysfunction has low serum levels of thrombin, they are at risk of bleeding due to impaired clotting mechanisms. Dehydration (choice A) is not directly related to low thrombin levels. Malnutrition (choice B) may impact overall health but is not the most immediate concern associated with low thrombin levels. Infection (choice D) is not directly related to the clotting function affected by low thrombin levels.
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