Gastroenterology — MCQs

A 52-year-old man was referred to the clinic due to increased abdominal girth. He is diagnosed with ascites by the presence of a fluid thrill and shifting dullness on percussion. After administering diuretic therapy, which nursing action would be most effective in ensuring safe care for this patient?

Q1267

Massive bleeding per rectum in an elderly patient is due to.

Q1268

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?

Q1269

In which of the following conditions is uniform dilation of the esophagus seen?

Q1270

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

Gastroenterology Indian Medical PG Practice Questions and MCQs

Question 1261: The commonest cause of significant lower gastrointestinal bleeding in a middle-aged person with an unknown reason is?

A. Angiodysplasia
B. Ischemic colitis
C. Ulcerative colitis
D. Sigmoid diverticula (Correct Answer)

Explanation: ### Sigmoid diverticula - **Diverticulosis** is highly prevalent in middle-aged and older adults, and **diverticular bleeding** is the most common cause of significant lower GI bleeding in this demographic [1]. - Bleeding typically results from rupture of the **vasa recta** overlying a diverticulum and is often **painless** and profuse [1]. ### Angiodysplasia - While it is a common cause of lower GI bleeding, particularly in older individuals with **aortic stenosis** or **renal failure**, it is generally less common than diverticular bleeding as the overall *commonest* cause in a middle-aged person [1]. - Bleeding from angiodysplasia is often **slow and chronic**, leading to iron deficiency anemia, though it can present as acute bleeding [1]. ### Ischemic colitis - Occurs due to temporary reduction in blood flow to a segment of the colon, commonly presenting with **abdominal pain**, **tenderness**, and **bloody diarrhea** [2]. - While it causes bleeding, it is typically accompanied by significant pain and is not usually the *commonest* cause of acute, significant, and otherwise unexplained lower GI bleeding [2]. ### Ulcerative colitis - A form of **inflammatory bowel disease** characterized by diffuse inflammation and ulceration of the colonic mucosa, typically presenting with **bloody diarrhea**, **abdominal cramps**, and **tenesmus**. - While it causes significant lower GI bleeding, it usually has other prominent symptoms and is less common than diverticular disease in the general middle-aged population presenting with unexplained bleeding.

Question 1262: A d-xylose test was requested on a patient with a history of long-standing steatorrhea, and a 5-hour urine sample showed less than 4.0 grams of excretion after giving 25 grams of d-xylose. The most likely diagnosis is

A. Chronic Pancreatitis
B. Bacterial overgrowth syndrome
C. Ileal disease
D. Celiac sprue (Correct Answer)

Explanation: ***Celiac sprue*** - A **low D-xylose excretion** suggests an abnormality in the **small intestinal mucosa**, specifically in the proximal small bowel where D-xylose is absorbed. Celiac sprue primarily affects this region, leading to malabsorption [1]. - While other conditions can cause malabsorption, the D-xylose test's purpose is to differentiate between **mucosal** and **pancreatic** causes of malabsorption. A low result points to a mucosal defect [1]. *Chronic Pancreatitis* - Chronic pancreatitis causes malabsorption due to **enzyme insufficiency**, primarily affecting fat digestion, leading to steatorrhea [1]. - The **D-xylose test** would typically be **normal** in chronic pancreatitis because D-xylose absorption, which relies on the integrity of the small intestinal mucosa, is not impaired. *Bacterial overgrowth syndrome* - Small intestinal bacterial overgrowth (SIBO) can cause malabsorption and steatorrhea by damaging the small intestinal mucosa or deconjugating bile acids [2]. - While SIBO can sometimes lead to a slightly reduced D-xylose absorption, it's not the most definitive cause for a significantly low D-xylose test that points directly to a mucosal defect as seen in celiac sprue. Other tests like a **hydrogen breath test** are more specific for SIBO. *Ileal disease* - Ileal disease primarily affects the **distal small intestine**, impacting the absorption of **bile acids** and **vitamin B12** [3]. - **D-xylose** is absorbed in the **proximal small intestine**, so ileal disease would not typically cause a significant reduction in D-xylose excretion.

Question 1263: A 50-year-old man with a history of alcohol abuse is found to have elevated liver enzymes, and a liver biopsy shows the microscopic features of steatosis. If the patient abstains from further drinking, this condition will most likely evolve into which of the following?

A. Acute liver injury
B. Chronic liver disease
C. Cirrhosis
D. Complete resolution (Correct Answer)

Explanation: ***Complete regression*** - Abstaining from alcohol can lead to **complete regression** of steatosis as the liver has a remarkable ability to heal and regenerate when inflammation is not present [1]. - With sustained abstinence, the liver enzymes can return to normal and the steatosis may resolve fully within months [1]. *Chronic hepatitis* - Chronic hepatitis is characterized by ongoing **inflammation** and potential liver damage, which is not typically seen when a patient successfully abstains from alcohol. - This condition usually occurs after prolonged liver injury, rather than as a direct evolution from steatosis with abstinence. *Acute hepatitis* - Acute hepatitis usually presents with **sudden onset of liver inflammation** often caused by viral infections or toxins, rather than alcoholic liver steatosis. - In the context of alcohol, acute hepatitis would indicate recent and severe liver damage, which differs when the patient avoids further alcohol. *Hyperplastic nodules* - Hyperplastic nodules are associated with advanced liver disease, often seen in conditions like **cirrhosis**, rather than directly evolving from steatosis after alcohol cessation. - These nodules develop as a compensatory response in chronic liver disease, which is not expected if the steatosis resolves.

Question 1264: Which of the following conditions is not reduced by a high-fiber diet?

A. Inflammatory bowel disease (IBD)
B. Sigmoid volvulus (intestinal obstruction) (Correct Answer)
C. Diverticulitis (colon inflammation)
D. Colorectal cancer (bowel tumor)

Explanation: ***Sigmoid volvulus (intestinal obstruction)*** - While a high-fiber diet can promote **regular bowel movements**, it does not specifically reduce the risk of **sigmoid volvulus**, which is primarily caused by an abnormally long and mobile sigmoid colon, often exacerbated by a narrow mesenteric attachment. - The mechanical twisting of the colon is not directly influenced by stool bulk or transit time in a way that prevents its occurrence.*Inflammatory bowel disease (IBD)* - A high fiber diet may actually exacerbate symptoms in some patients with **IBD**, particularly during flares, as it can increase stool bulk and intestinal irritation. - While fiber can have anti-inflammatory effects in some gut conditions, its role in preventing or reducing IBD is complex and not consistently supported as a primary preventive measure.*Colorectal cancer (bowel tumor)* - A high-fiber diet is strongly associated with a **reduced risk of colorectal cancer** by increasing stool bulk, diluting carcinogens, and shortening transit time, thereby limiting exposure of the colon lining to harmful substances. - Fiber fermentation by gut bacteria produces **short-chain fatty acids** like butyrate, which have protective effects on colonocytes.*Diverticulitis (colon inflammation)* - A high-fiber diet is effective in **preventing diverticulosis** and reducing the risk of diverticulitis by increasing stool bulk and reducing intraluminal pressure in the colon [1]. - This prevents the formation and inflammation of **diverticula**, which are small pouches that can protrude from the colon wall [1].

Question 1265: What condition is classified using the Milwaukee classification?

A. Sphincter of Oddi dysfunction (Correct Answer)
B. Pancreaticobiliary duct junction abnormalities
C. Pancreatitis due to sphincter dysfunction
D. Chronic pancreatitis due to sphincter dysfunction

Explanation: ***Sphincter of Oddi dysfunction*** - The **Milwaukee classification** is specifically used to categorize **sphincter of Oddi dysfunction (SOD)** into different types based on clinical, laboratory, and manometric findings. - This classification helps in guiding treatment decisions and predicting outcomes for patients with SOD [1]. *Pancreaticobiliary duct junction abnormalities* - These are **structural anomalies** of the junction between the pancreatic and bile ducts, not directly classified by the Milwaukee system. - While they can lead to symptoms similar to SOD, their diagnosis relies on imaging rather than the criteria used in the Milwaukee classification. *Pancreatitis due to sphincter dysfunction* - This describes a potential **consequence** of sphincter of Oddi dysfunction, particularly Type I and Type II SOD, but it is not the condition itself that the Milwaukee classification categorizes [1]. - The classification assesses the dysfunction of the sphincter, which *can* lead to pancreatitis, but the pancreatitis itself is a complication. *Chronic pancreatitis due to sphincter dysfunction* - This is a **long-term outcome** or complication that can arise from sustained sphincter of Oddi dysfunction. - The Milwaukee classification is used to define the nature of the sphincter dysfunction, not the resulting chronic pancreatitis itself.

Question 1266: A 52-year-old man was referred to the clinic due to increased abdominal girth. He is diagnosed with ascites by the presence of a fluid thrill and shifting dullness on percussion. After administering diuretic therapy, which nursing action would be most effective in ensuring safe care for this patient?

A. Measuring serum potassium for hypokalemia
B. Assessing the client for hypovolemia
C. Measuring the client’s weight weekly
D. Documenting precise intake and output (Correct Answer)

Explanation: ***Documenting precise intake and output*** - **Accurate intake and output (I&O)** monitoring helps track fluid balance and the effectiveness of diuretic therapy in reducing ascites [1]. - This data is crucial for adjusting diuretic dosages and preventing complications like **dehydration** or **fluid overload** [2]. *Measuring serum potassium for hypokalemia* - While monitoring electrolytes is important, **hypokalemia** is a potential side effect of some diuretics, but not the *most effective* immediate nursing action for *safe care* post-diuretic administration for ascites [3]. - This is an important monitoring parameter, but not the primary action for overall safe care in this context. *Assessing the client for hypovolemia* - **Hypovolemia** is a risk with aggressive diuretic therapy, but frequently reassessing **I&O** provides more concrete data to *prevent* this complication rather than just *assessing* for it after it may have started [1]. - While important, focusing on the *outcome* rather than the *preventative measure* makes it less effective as a primary safe care action. *Measuring the client’s weight weekly* - **Weekly weight measurement** is a useful tool for tracking fluid shifts over time but is not immediate enough to ensure *safe care* after diuretic administration [3]. - **Daily weight measurements** or even more frequent monitoring might be warranted, but precise **I&O** provides real-time data for fluid balance decisions.

Question 1267: Massive bleeding per rectum in an elderly patient is due to.

A. Colitis
B. Diverticulosis (Correct Answer)
C. Peptic ulcer disease
D. Colorectal cancer

Explanation: ***Diverticulosis*** - **Diverticular bleeding** is the most common cause of **massive lower gastrointestinal bleeding** in elderly patients. - Bleeding occurs when a small artery at the base of a diverticulum is eroded, leading to significant, often **painless, rectal bleeding**. *Colitis* - While colitis can cause rectal bleeding, it is typically associated with **diarrhea, abdominal pain**, and often **bloody stools** rather than massive, isolated rectal bleeding. - Inflammatory conditions like ulcerative colitis can cause bleeding, but a single episode of massive hemorrhage is less characteristic. *Colorectal cancer* - **Colorectal cancer** can cause rectal bleeding, but it is typically **chronic, intermittent, and low-volume**, often presenting as blood mixed with stool or on the surface of the stool. - It rarely presents as a sudden, **massive hemorrhage** that fills the toilet bowl. *Peptic ulcer disease* - **Peptic ulcer disease** is a cause of **upper gastrointestinal bleeding**, presenting as **hematemesis** (vomiting blood) or **melena** (black, tarry stools) [1]. - It would not cause **massive bleeding per rectum** unless there is a very rapid transit of blood through the entire gastrointestinal tract, which is uncommon.

Question 1268: 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?

A. Diabetes mellitus (Correct Answer)
B. Malabsorption of fat-soluble vitamins D and K
C. Courvoisier sign
D. Positive fecal occult blood test

Explanation: 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.

Question 1269: In which of the following conditions is uniform dilation of the esophagus seen?

A. Achalasia and Diffuse esophageal spasm (Correct Answer)
B. Esophageal strictures and Nutcracker esophagus
C. Nutcracker esophagus and Esophageal cancer
D. Esophageal strictures and Esophageal cancer

Explanation: ***Achalasia and Diffuse esophageal spasm*** - In **achalasia**, there is a **loss of ganglion cells** in Auerbach's plexus [1], leading to **impaired relaxation of the lower esophageal sphincter** and a lack of peristalsis in the esophageal body, resulting in proximal dilation [1]. - **Diffuse esophageal spasm** involves **simultaneous, high-amplitude, non-peristaltic contractions** causing dysphagia and chest pain, which can lead to a "corkscrew" appearance on imaging but also generalized esophageal dilation due to inefficient bolus transit. *Esophageal strictures and Nutcracker esophagus* - **Esophageal strictures** typically cause **focal narrowing** of the esophagus, proximal to which there may be dilation [2], but not uniform dilation along the entire length. - **Nutcracker esophagus** is characterized by **high-amplitude peristaltic contractions** and does not typically involve uniform esophageal dilation [2]. *Nutcracker esophagus and Esophageal cancer* - As mentioned, **Nutcracker esophagus** features strong, coordinated contractions but **no structural dilation** [2]. - **Esophageal cancer** often presents as a **focal mass** or stricture, which can obstruct the lumen and cause proximal dilation, but not uniform dilation. *Esophageal strictures and Esophageal cancer* - Both **esophageal strictures** and **esophageal cancer** are typically associated with **localized narrowing** and obstruction, leading to focal or proximal dilation rather than a uniform dilation of the entire esophagus.

Question 1270: All of the following are true about Zollinger-Ellison syndrome except which of the following?

A. Gastrin levels are typically elevated in patients with Zollinger-Ellison syndrome.
B. It is commonly associated with recurrent peptic ulcers.
C. It is primarily caused by the presence of a gastrinoma.
D. Insulinomas are the primary cause of Zollinger-Ellison syndrome. (Correct Answer)

Explanation: ***Insulinomas are the primary cause of Zollinger-Ellison syndrome.*** - This statement is incorrect; **Zollinger-Ellison syndrome** is caused by a **gastrinoma** (a gastrin-secreting neuroendocrine tumor), not an insulinoma [1], [2]. - **Insulinomas** are tumors that secrete **insulin**, leading to hypoglycemia. *Gastrin levels are typically elevated in patients with Zollinger-Ellison syndrome.* - **Gastrinomas** secrete large amounts of **gastrin**, leading to significantly elevated serum gastrin levels [1]. - This excessive gastrin production is the hallmark biochemical feature of **Zollinger-Ellison syndrome**. *It is commonly associated with recurrent peptic ulcers.* - High gastrin levels overstimulate parietal cells, causing excessive **gastric acid secretion** [3]. - This leads to severe, often **recurrent peptic ulcers** that are refractory to standard treatments. *It is primarily caused by the presence of a gastrinoma.* - **Zollinger-Ellison syndrome** is defined by the presence of a **gastrin-producing tumor (gastrinoma)**, usually located in the pancreas or duodenum [1], [2]. - These tumors are responsible for the overproduction of gastrin and subsequent hyperacidity [3].

Practice by Chapter

Esophageal Disorders

Practice Questions

Peptic Ulcer Disease

Practice Questions

Inflammatory Bowel Disease

Practice Questions

Irritable Bowel Syndrome

Practice Questions

Malabsorption Syndromes

Practice Questions

Pancreatitis (Acute and Chronic)

Practice Questions

Gastrointestinal Bleeding

Practice Questions

Liver Diseases and Cirrhosis

Practice Questions

Viral Hepatitis

Practice Questions

Biliary Tract Disorders

Practice Questions

Gastrointestinal Motility Disorders

Practice Questions

Gastrointestinal Malignancies

Practice Questions

Want unlimited practice?

Get full access to all questions, explanations, and performance tracking.

Start For Free