10 exam-style questions with answers and explanations, straight from our 1,035-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The CGRN exam has 175 questions and runs 3 hours.
These 10 free CGRN questions are organized by exam domain, so you can see how each part of the Certified Gastroenterology Registered Nurse blueprint is tested. Reveal the answer and explanation under each question.
Four hours after an ERCP, a patient reports severe, steady epigastric pain radiating to the back, with nausea and vomiting. Which complication should the nurse suspect FIRST?
Correct answer: A - Post-ERCP pancreatitis
A patient who received fentanyl for moderate sedation was given naloxone for respiratory depression and recovered. Forty-five minutes later the patient again becomes difficult to arouse with a falling respiratory rate. The MOST likely explanation is that:
Correct answer: C - Naloxone's duration is shorter than fentanyl's, so its effect is wearing off
Two hours after a colonoscopy with polypectomy, a patient reports increasing abdominal pain. Which additional finding would MOST strongly suggest bowel perforation?
Correct answer: B - Abdominal distention with rigidity and rebound tenderness
During an upper endoscopy on a patient with known esophageal varices, the patient begins vomiting a large volume of bright red blood. What is the nurse's PRIORITY action?
Correct answer: D - Protect the airway and prepare for suctioning
A patient receiving propofol for endoscopy becomes deeply sedated with signs of airway compromise. Management focuses on airway and ventilatory support primarily because propofol:
Correct answer: A - Has no pharmacologic reversal agent
Before capsule endoscopy, which item in the patient's history is of GREATEST concern to the nurse?
Correct answer: C - A known small-bowel stricture
Which instrument is used to perform an ERCP?
Correct answer: D - A side-viewing duodenoscope with an elevator mechanism
A patient under moderate sedation is receiving supplemental oxygen. Which monitoring parameter detects hypoventilation EARLIEST, before the pulse oximeter shows a change?
Correct answer: B - Capnography (end-tidal CO2)
Flumazenil is being considered to reverse benzodiazepine over-sedation. In which patient should the nurse be MOST cautious about giving it?
Correct answer: C - A patient who takes benzodiazepines daily for a seizure disorder
In the recovery area following sedation, a patient has a Modified Aldrete score of 7. Using a common discharge threshold of 9 or return to baseline, the nurse should:
Correct answer: D - Continue monitoring, as the patient does not yet meet discharge criteria
The CGRN exam also covers these domains. Drill them in the full free practice test:
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