ATI LPN
NCLEX Questions on Gastrointestinal System Questions
Question 1 of 5
Which of the following would confirm the diagnosis of diabetes in a patient with symptoms of hyperglycaemia?
Correct Answer: A
Rationale: Rationale: 1. Fasting plasma glucose >=7.0 mmol/l is a diagnostic criteria for diabetes. 2. It indicates sustained hyperglycaemia without food intake influencing the result. 3. Choice B tests glucose response to a glucose challenge and may not reflect fasting levels. 4. HbA1c measures average glucose levels over 2-3 months, not immediate status. 5. Choice D lacks specificity as random glucose levels can fluctuate.
Question 2 of 5
A 36-year-old woman complains of reflux symptoms and intermittent diarrhea. The diagnosis of gastrinoma is suspected so a fasting serum gastrin is obtained and found to be 280 pg/mL (normal <115 pg/mL). An abdominal CT is negative. What would you do now?
Correct Answer: D
Rationale: The correct answer is D: Measure gastric acid secretion. In a suspected case of gastrinoma, elevated serum gastrin levels can lead to increased gastric acid secretion. Measuring gastric acid secretion can help confirm the diagnosis of gastrinoma by assessing for increased acid production. This can be done with tests like the gastric acid stimulation test or the secretin stimulation test. Option A is incorrect as an exploratory laparotomy is an invasive procedure and should not be the first step in the diagnostic process. Option B, measuring serum gastrin in response to secretin infusion, may be helpful in confirming the diagnosis but measuring gastric acid secretion is more directly related to the pathophysiology of gastrinoma. Option C, treating for H. pylori, is not indicated in this case as the patient's symptoms are more suggestive of gastrinoma rather than H. pylori infection.
Question 3 of 5
A 65-year-old man frequently regurgitates food several hours after eating, and experiences chest pain and dysphagia to both liquids and solids. He has lost 20 pounds. A CXR shows an air/fluid level in a dilated esophagus and an absent gastric air bubble. No mass in the distal esophagus or proximal stomach is identified at upper endoscopy. The best therapy for this patient is
Correct Answer: B
Rationale: The correct answer is B: Endoscopic balloon dilatation. This patient likely has achalasia based on the symptoms of regurgitation, chest pain, dysphagia, weight loss, and the CXR findings of a dilated esophagus and absent gastric air bubble. Endoscopic balloon dilatation is the initial treatment of choice for achalasia to disrupt the lower esophageal sphincter muscle fibers and improve esophageal emptying. Proton-pump inhibitors (Choice A) are not effective for achalasia. Sucralfate (Choice C) is used for mucosal protection but does not treat achalasia. Esophageal resection (Choice D) is a last resort for refractory cases.
Question 4 of 5
An 82-year-old female nursing home resident was admitted with left-sided aspiration pneumonia. She improved quickly on intravenous antibiotics. During her admission, a chest x-ray incidentally revealed a large calcification in the right upper quadrant of the abdomen. Subsequent abdominal ultrasound confirmed the presence of a single large stone in the gallbladder (3 cm in diameter). She denies any abdominal discomfort or pain. What would be the best course of treatment for her gallstone disease?
Correct Answer: C
Rationale: Step-by-step rationale for choosing answer C: 1. The patient is asymptomatic with no abdominal pain or discomfort. 2. Asymptomatic gallstones do not require immediate treatment. 3. The incidental finding of a gallstone in an asymptomatic patient does not warrant surgical intervention. 4. Watchful waiting is recommended for asymptomatic gallstones to avoid unnecessary procedures. 5. Reassurance is essential to prevent unnecessary anxiety or interventions. Summary: Choice C, reassuring the patient that she does not need any additional therapy for the gallstone at this time, is the best course of action because the patient is asymptomatic, and asymptomatic gallstones do not require immediate treatment. Choices A, B, and D involve unnecessary interventions for an asymptomatic gallstone.
Question 5 of 5
A 47-year-old web designer has a 14-year history of ulcerative colitis. He recently moved to your area and presents to your office for continued management of his ulcerative colitis. He has been asymptomatic for the past two years and off all medications for one year with no rectal bleeding, diarrhea, abdominal pain, tenesmus, or fever. Before that he had very active colitis requiring steroids and immunosuppressants. He brings records from his previous physician that include his last three colonoscopy and pathology reports. The reports from 6 and 12 years ago documented active colitis with friable mucosa from the mid-transverse colon to the rectum, superficial ulcerations, crypt abscesses and crypt distortion, and acute and chronic inflammation. The most recent report, from almost three years ago, was fairly unremarkable endoscopically. Numerous random biopsies had been obtained. They showed mucosal changes on histology also consistent with a history of ulcerative colitis, but there was no evidence of active disease. What do you recommend?
Correct Answer: D
Rationale: The correct answer is D: Do not start steroids; if stools are heme-occult positive, then refer for colonoscopy. In this scenario, the patient is asymptomatic for the past two years and off all medications for one year with no signs of active disease. Initiation of steroids is not indicated as the patient is currently in remission. However, given the history of ulcerative colitis and the risk of disease flare-ups, it is important to monitor for any signs of disease recurrence. Checking for heme-occult positive stools can be an early indicator of active disease. Referring for colonoscopy if stools are heme-occult positive allows for a more thorough evaluation of disease activity without unnecessary initiation of steroids. This approach balances the need for monitoring with avoiding unnecessary treatment. Other choices are incorrect as they either recommend starting steroids in a patient in remission (A, C) or do not incorporate monitoring for disease activity (B).