Gastroenterology Practice Questions

Q: A 55-year-old white woman has had recurrent episodes of alcohol-induced pancreatitis. Despite abstinence, the patient develops postprandial abdominal pain, bloating, weight loss despite good appetite, and bulky, foul-smelling stools. Kidney, ureter, bladder (KUB) x-ray shows pancreatic calcifications. In this patient, you should expect to find which of the following?

Diabetes mellitus. Diabetes mellitus - Chronic pancreatitis, especially due to recurrent alcohol-induced episodes, often leads to the destruction of pancreatic islet cells, resulting in impaired insulin production and consequently, diabetes mellitus [1]. - The combination of pancreatic calcifications and symptoms like weight loss despite good appetite, and malabsorption due to pancreatic insufficiency, makes diabetes a strong expected complication [1]. Malabsorption of fat-soluble vitamins D and K - While chronic pancreatitis often causes steatorrhea and malabsorption of fat-soluble vitamins (A, D, E, K), the question asks what one should expect to find, and diabetes mellitus is a more direct and universally expected consequence of widespread pancreatic damage from recurrent pancreatitis [1]. - The symptoms described, such as bulky, foul-smelling stools, are indicative of fat malabsorption, which leads to deficiencies in fat-soluble vitamins, but the direct mention of diabetes mellitus reflects a more advanced stage of pancreatic destruction [2]. Positive fecal occult blood test - A positive fecal occult blood test suggests gastrointestinal bleeding, which is not a direct or typical consequence of chronic pancreatitis itself. - While complications like peptic ulcers or pancreatic cancer (a long-term risk of chronic pancreatitis) could cause GI bleeding, it's not an expected finding directly associated with the pancreatitis symptoms described. Courvoisier sign - Courvoisier sign (a palpable, non-tender gallbladder with jaundice) is typically associated with obstruction of the common bile duct due to a malignancy in the head of the pancreas or other periampullary tumors. - It is not a characteristic finding in uncomplicated chronic pancreatitis, especially without mention of jaundice.

Q: A 70-year-old woman with a history of ovarian cancer presents with diarrhea, having completed radiation therapy for her cancer 3 months prior. Physical examination reveals cachexia, hyperactive bowel sounds, and generalized pallor. The stools contain blood, and a complete blood count shows decreased hemoglobin (7.8 g/dL) and decreased mean corpuscular volume (70 fL). Which of the following is the most likely cause of gastrointestinal bleeding in this patient?

Radiation enterocolitis. ***Radiation enterocolitis*** - Following radiation therapy, patients can develop inflammation and damage to the **intestinal lining**, leading to symptoms such as diarrhea and gastrointestinal bleeding [1]. - The presence of **cachexia** and **decreased hemoglobin** indicates significant pathology, aligning with this diagnosis following her recent treatment for ovarian cancer. *Ischemic colitis* - Often presents with **abdominal pain** and is usually associated with risk factors like **vascular disease**, which is not described here [2]. - Symptoms typically include **bloody diarrhea**, but the link with recent radiation therapy makes this diagnosis less likely. *Hemorrhoids* - Generally cause **bright red blood per rectum** and are more associated with changes in bowel habits rather than diarrhea and cachexia. - The absence of a **history of straining** or other typical risk factors suggests that hemorrhoids are unlikely in this scenario. *Angiodysplasia* - Typically presents during older age and can cause gastrointestinal bleeding, but is usually associated with **chronic anemia** rather than the acute symptoms seen here [3]. - Without a significant previous history of bleeding or vascular anomalies, this condition is an unlikely cause for her symptoms.

Q: Which intervention should Nurse Bryan include in the care plan for Pierre, a client diagnosed with acute pancreatitis under his care?

Maintain NPO status and use an NG tube.. ***Maintain NPO status and use an NG tube.*** - Maintaining **NPO (nil per os) status** is crucial in acute pancreatitis to **rest the pancreas** and prevent further stimulation of enzyme secretion [1]. - An **NG tube** may be used for **gastric decompression** in cases of severe nausea, vomiting, or paralytic ileus to reduce abdominal distention and discomfort. *Administration of vasopressin and insertion of a balloon tamponade* - **Vasopressin** and **balloon tamponade** are interventions typically used for **esophageal variceal bleeding**, not directly for acute pancreatitis. - While pancreatitis can sometimes cause complications that might affect the gastrointestinal tract, these are not initial or direct treatments for the pancreatitis itself. *Preparation for a paracentesis and administration of diuretics* - **Paracentesis** and **diuretics** are interventions primarily used to manage **ascites**, which is fluid accumulation in the peritoneal cavity. - While severe pancreatitis can sometimes lead to ascites, these are not primary treatments for acute pancreatitis itself but rather for a specific complication. *Dietary plan of a low-fat diet and increased fluid intake to 2,000 ml/day* - A **low-fat diet** is appropriate for long-term management of chronic pancreatitis or after recovery from acute pancreatitis, but not during the **acute NPO phase**. - While **fluid intake** is important to prevent dehydration, the specific amount of **2,000 ml/day** may not be sufficient or appropriate depending on the patient's hydration status and fluid loss, and it doesn't address the immediate need for pancreatic rest.

Q: Which complication is most commonly associated with prepyloric ulcers?

Bleeding. ***Bleeding*** - **Upper gastrointestinal bleeding** is the most common and often the most life-threatening complication of prepyloric ulcers. - This can manifest as **hematemesis** (vomiting blood) or **melena** (black, tarry stools). *Penetration* - This occurs when the ulcer erodes through the gastric wall into an adjacent organ, such as the pancreas or liver. - While a serious complication, it is **less common** than bleeding. *Gastric outlet obstruction* - This complication typically results from chronic inflammation, scarring, or edema at or near the pylorus. - While possible with severe prepyloric ulcers, it is **not the most frequent** presentation of a complication. *Perforation* - This involves the ulcer creating a hole through the entire wall of the stomach, leading to the leakage of gastric contents into the abdominal cavity. - While a life-threatening emergency, **perforation is less common** than bleeding.

Q: Gastrin-secreting tumors (gastrinomas) are most commonly found in which location?

Duodenum or pancreas. Duodenum or pancreas - The majority, approximately 80%, of gastrinomas are found in the duodenum or pancreas [1]. - These tumors secrete excessive gastrin, leading to Zollinger-Ellison syndrome [1]. Stomach antrum - The stomach antrum contains G cells that produce gastrin, but primary gastrinomas rarely originate here. - While G-cell hyperplasia can occur in the antrum, it is distinct from a gastrin-secreting tumor (gastrinoma). Liver - The liver is a common site for metastases from gastrinomas, but it is not typically the primary site of tumor origin [1]. - Primary liver cancers are usually hepatocellular carcinomas or cholangiocarcinomas, which do not secrete gastrin. Small intestine (jejunum/ileum) - Gastrinomas are only rarely found in the more distal parts of the small intestine, such as the jejunum or ileum. - The duodenum and pancreas are the predominant locations for these neuroendocrine tumors due to embryological development and cell differentiation.

Q: A patient presents with multiple secondary types of lesions in the liver, non-responding diarrhea, and flushing. It is most probably due to a lesion in:

Small intestine. ***Small intestine*** - The presence of **non-responding diarrhea** and **flushing** suggests a neuroendocrine tumor, particularly one that secretes **somatostatin**, commonly associated with the small intestine [1]. - The **multiple liver lesions** often indicate metastasis from an intestinal primary, further supporting a lesion in the small intestine [1]. *Liver* - While liver lesions are present, they are **secondary** and not the primary source of symptoms, which are more indicative of a gastrointestinal origin [1]. - Liver lesions alone do not typically cause **flushing** or **non-responding diarrhea** without an associated primary tumor in the intestine. *Stomach* - Gastric lesions can cause various symptoms but are less commonly associated with **flushing** and **diarrhea**, particularly of the non-responsive type seen here. - Stomach-specific conditions often relate more to **ulcerations** or bleeding than the systemic endocrine symptoms presented. *Large intestine* - While lesions in the large intestine can lead to **diarrhea**, they do not often present with **flushing** or involve multiple liver lesions. - This type of presentation is more characteristic of small intestinal involvement, especially in cases of **carcinoid syndrome** from neuroendocrine tumors [1].

Q: A patient presents with unconjugated hyperbilirubinemia and the presence of urobilinogen in urine. Which of the following is the least likely diagnosis?

Dubin Johnson syndrome. ***Dubin Johnson syndrome*** - This syndrome primarily causes **conjugated hyperbilirubinemia** due to a defect in bilirubin excretion from hepatocytes. - The presence of **unconjugated hyperbilirubinemia** and **urobilinogen** in urine makes Dubin-Johnson syndrome the least likely diagnosis. *Crigler Najjar syndrome* - This is a rare genetic disorder characterized by **unconjugated hyperbilirubinemia** due to a severe deficiency or absence of the enzyme **uridine diphosphate-glucuronosyltransferase (UGT1A1)**. - While it causes unconjugated hyperbilirubinemia, the presence of **urobilinogen** indicates some bilirubin conjugation and excretion into the gut, making this less likely than other causes of unconjugated hyperbilirubinemia with urobilinogen. *Gilbert's syndrome* - This common, mild genetic disorder causes **unconjugated hyperbilirubinemia** due to reduced activity of the **UGT1A1 enzyme**, leading to decreased bilirubin conjugation. - Since some conjugation still occurs, the presence of **urobilinogen** (formed from conjugated bilirubin in the gut) is consistent with this diagnosis. *Hemolytic Jaundice* - **Hemolysis** leads to an increased breakdown of red blood cells, producing a large amount of **unconjugated bilirubin** that overwhelms the liver's conjugating capacity. - The liver still conjugates some of this bilirubin, which is then excreted into the gut, leading to increased **urobilinogen** formation and excretion in urine.

Q: Which of the following is not a common cause of chronic gastritis?

Gastric ulcer. ***Overuse of salicylates*** - Salicylates can cause **acute gastritis** [1] but are not commonly associated with chronic gastritis. - Chronic gastritis is typically linked to **long-term irritation** rather than with the short-term use of salicylates. *Gastric ulcer* - Gastric ulcers are a consequence of chronic gastritis rather than a cause; they often result from the long-term **inflammation** of the gastric lining [1]. - They create a cycle where **chronic irritation** leads to ulceration, worsening gastritis. *Pernicious anaemia* - Pernicious anaemia can lead to **chronic atrophic gastritis** [1], which is a form of chronic gastritis but is not a primary cause. - It is associated with **autoimmune processes** affecting gastric mucosa and vitamin B12 absorption. *H. Pylori* - Helicobacter pylori infection is a well-recognized cause of **chronic gastritis** across the globe [1]. - It leads to persistent **inflammatory changes** and is a key pathogen in the pathogenesis of chronic gastritis [1].

Q: Which of the following is a contraindication for medical management of gallstones?

Radiopaque stones. ***Radiopaque stones*** - **Radiopaque stones** are typically **calcium-rich** and do not dissolve with oral bile acid therapy [1]. - Medical dissolution therapy is primarily effective for cholesterol-rich stones, which are often radiolucent [1]. *Normal functioning gallbladder* - A **normal functioning gallbladder** is actually a prerequisite for medical dissolution therapy, as it needs to fill and empty to allow bile acids to reach the stones. - If the gallbladder is non-functioning, oral dissolution agents cannot effectively reach and act on the gallstones. *Small stones* - **Small stones** (typically <1.5 cm) are more amenable to medical dissolution therapy due to their higher surface area-to-volume ratio, facilitating faster dissolution [2]. - Therefore, small stones are an indication for, not a contraindication to, medical management. *Radiolucent stones* - **Radiolucent stones** are primarily composed of cholesterol, making them good candidates for dissolution with oral bile acid therapy [2]. - This characteristic indicates suitability for medical management, not a contraindication.

Question 1

All of the following are true about Zollinger-Ellison syndrome except which of the following?

Accepted Answer

Insulinomas are the primary cause of Zollinger-Ellison syndrome.

Answer

Gastrin levels are typically elevated in patients with Zollinger-Ellison syndrome.

Answer

It is commonly associated with recurrent peptic ulcers.

Answer

It is primarily caused by the presence of a gastrinoma.

Question 2

A 55-year-old white woman has had recurrent episodes of alcohol-induced pancreatitis. Despite abstinence, the patient develops postprandial abdominal pain, bloating, weight loss despite good appetite, and bulky, foul-smelling stools. Kidney, ureter, bladder (KUB) x-ray shows pancreatic calcifications. In this patient, you should expect to find which of the following?

Accepted Answer

Diabetes mellitus

Answer

Malabsorption of fat-soluble vitamins D and K

Answer

Courvoisier sign

Answer

Positive fecal occult blood test

Question 3

A 70-year-old woman with a history of ovarian cancer presents with diarrhea, having completed radiation therapy for her cancer 3 months prior. Physical examination reveals cachexia, hyperactive bowel sounds, and generalized pallor. The stools contain blood, and a complete blood count shows decreased hemoglobin (7.8 g/dL) and decreased mean corpuscular volume (70 fL). Which of the following is the most likely cause of gastrointestinal bleeding in this patient?

Accepted Answer

Radiation enterocolitis

Answer

Angiodysplasia

Answer

Hemorrhoids

Answer

Ischemic colitis

Question 4

Which intervention should Nurse Bryan include in the care plan for Pierre, a client diagnosed with acute pancreatitis under his care?

Accepted Answer

Maintain NPO status and use an NG tube.

Answer

Administration of vasopressin and insertion of a balloon tamponade

Answer

Preparation for a paracentesis and administration of diuretics

Answer

Dietary plan of a low-fat diet and increased fluid intake to 2,000 ml/day

Question 5

Which complication is most commonly associated with prepyloric ulcers?

Accepted Answer

Bleeding

Answer

Gastric outlet obstruction

Answer

Penetration

Answer

Perforation

Question 6

Gastrin-secreting tumors (gastrinomas) are most commonly found in which location?

Accepted Answer

Duodenum or pancreas

Answer

Liver

Answer

Stomach antrum

Answer

Small intestine (jejunum/ileum)

Question 7

A patient presents with multiple secondary types of lesions in the liver, non-responding diarrhea, and flushing. It is most probably due to a lesion in:

Accepted Answer

Small intestine

Answer

Liver

Answer

Stomach

Answer

Large intestine

Question 8

A patient presents with unconjugated hyperbilirubinemia and the presence of urobilinogen in urine. Which of the following is the least likely diagnosis?

Accepted Answer

Dubin Johnson syndrome

Answer

Gilbert's syndrome

Answer

Crigler Najjar syndrome

Answer

Hemolytic Jaundice

Question 9

Which of the following is not a common cause of chronic gastritis?

Accepted Answer

Gastric ulcer

Answer

H. Pylori

Answer

Pernicious anaemia

Answer

Overuse of salicylates

Question 10

Which of the following is a contraindication for medical management of gallstones?

Accepted Answer

Radiopaque stones

Answer

Normal functioning gallbladder

Answer

Small stones

Answer

Radiolucent stones

Gastroenterology — MCQs

Gastroenterology — MCQs

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