Gastroenterology Practice Questions

Q: Which of the following is the most sensitive and specific test for acute pancreatitis?

S.lipase. ***S.lipase*** - **Serum lipase** is considered the most sensitive and specific marker for **acute pancreatitis** because it remains elevated longer than amylase and is less commonly elevated in non-pancreatic conditions. - A level of **serum lipase** that is three times the upper limit of normal is highly indicative of **acute pancreatitis**. *S.amylase* - **Serum amylase** is often elevated in **acute pancreatitis**, but it is less specific than lipase, as it can also be elevated in other conditions like **salivary gland disease**, **bowel ischemia**, or **renal failure** [1]. - **Amylase** levels typically normalize within 3-5 days, whereas lipase levels can remain elevated for 8-14 days. *S.Alanine transaminase* - **Serum alanine transaminase (ALT)** is primarily a marker of **hepatocellular injury** and is not directly used for diagnosing **acute pancreatitis**. - While elevated **ALT** can sometimes suggest **gallstone pancreatitis** if significantly high (e.g., >150 U/L), it's not a diagnostic test for the pancreatitis itself. *C-reactive protein* - **C-reactive protein (CRP)** is an **acute-phase reactant** that indicates inflammation and tissue damage, and its levels rise in pancreatitis. - However, **CRP** is a non-specific marker of inflammation and is more useful for assessing the **severity** and **prognosis** of pancreatitis rather than for initial diagnosis [1].

Q: Which of the following is MOST characteristic of gastric ulcers compared to duodenal ulcers?

Hematemesis is more common than melena in gastric ulcers. No relevant references with a score >= 7 were provided to support the clinical characteristics of gastric versus duodenal ulcers in the explanation. Hematemesis is more common than melena in gastric ulcers; gastric ulcers are located in the stomach, so if they bleed, the blood is more likely to be vomited before it has been digested enough to turn black (melena). The closer the bleeding source is to the mouth in the GI tract, the more likely freshly passed blood will be bright red (hematemesis). Pain is more common during the day than at night. While gastric ulcer pain can occur at any time, it is not specifically more common during the day compared to at night as a characteristic differentiator from duodenal ulcers. Duodenal ulcer pain is often described as nocturnal or occurring several hours after a meal, but this option does not isolate a unique feature of gastric ulcers. Usually occurs in older adults. While the incidence of peptic ulcer disease can increase with age, stating that gastric ulcers usually occur in older adults is not a characteristic distinguishing them from duodenal ulcers, as both can affect various age groups, and duodenal ulcers are often seen in younger to middle-aged adults. This statement is too general and does not provide a specific differentiating feature. Pain is relieved with ingestion of food. This description is more characteristic of duodenal ulcers, where food can transiently buffer stomach acid, alleviating the pain. In contrast, gastric ulcer pain is often worsened by food intake, as eating stimulates acid secretion and gastric motility.

Q: In men, what quantity of ethyl alcohol consumed daily for more than 10 years increases the relative risk of developing alcoholic liver disease?

40g/d. 40g/d - Chronic consumption of 40g/d or more of ethanol in men, and 20g/d or more in women, significantly increases the risk of developing alcoholic liver disease over 10 years [1]. - This threshold represents a level of regular alcohol intake that causes cumulative hepatic damage over time [1]. 20g/d - While 20g/d in women significantly increases the risk, in men, this amount is generally considered the threshold for low-risk drinking in the absence of other risk factors. - Consistent consumption at this level in men for more than 10 years would be very unlikely to raise the relative risk of developing alcoholic liver disease above that of the general population. 60g/d - This amount certainly carries a high risk of alcoholic liver disease, but it is above the minimum threshold required to significantly increase the relative risk. - The risk of cirrhosis and other severe liver damage escalates with intake greater than 40g/d [1]. 80g/d - Consumption at 80g/d represents a very high level of alcohol intake and is associated with a substantially elevated risk of severe alcoholic liver disease. - However, the question asks for the quantity that increases the relative risk, meaning the lowest dose above which the risk is significantly higher than baseline.

Q: Which of the following is the most common screening test for acute pancreatitis?

Serum lipase. ***Serum lipase*** - **Serum lipase** is considered the most specific and sensitive enzyme for diagnosing acute pancreatitis. [1] - Its levels typically rise within 4-8 hours of acute pancreatitis onset and can remain elevated for 8-14 days. [1] *Serum amylase* - While **serum amylase** is also elevated in acute pancreatitis, it is less specific than lipase as it can be elevated in other conditions (e.g., salivary gland disease, bowel ischemia). [1] - Its levels usually normalize more quickly than lipase, making it less useful for diagnosing pancreatitis with delayed presentation. [1] *Urine trypsinogen* - **Urine trypsinogen** can be elevated in pancreatitis, but it is not a routinely used or widely available screening test. [1] - Its diagnostic accuracy and clinical utility are not as well-established or practical as serum lipase or amylase. [1] *Insulin* - **Insulin** is a hormone produced by the pancreas involved in glucose regulation and is not a marker for pancreatic inflammation or injury in acute pancreatitis. - Its levels would not be used to diagnose acute pancreatitis.

Q: Which of the following is a common prognostic factor for Acute Pancreatitis?

Serum Calcium. ### Serum Calcium - **Hypocalcemia** is a common **prognostic indicator** in severe acute pancreatitis, often due to saponification of fat by pancreatic lipases, leading to calcium precipitation [1]. - A persistent decrease in serum calcium levels can correlate with a **worse prognosis** and increased risk of complications [1]. *Serum Amylase* - While **elevated serum amylase** is diagnostic of acute pancreatitis, its absolute level **does not correlate with disease severity** or prognosis. - Amylase levels can return to normal even while the patient is still very ill with severe pancreatitis. *Serum Glucose* - **Hyperglycemia** can occur in acute pancreatitis due to impaired insulin secretion or increased counter-regulatory hormones, and may be included in some severity scoring systems [1]. - However, it is generally considered **less sensitive or specific** as a standalone prognostic factor compared to other markers like calcium. *Serum AST* - **Elevated AST** (and ALT) typically indicates a **biliary etiology** for acute pancreatitis, such as gallstones. - While it helps determine the cause, **AST levels themselves are not a primary prognostic factor** for the overall severity or outcome of the pancreatitis.

Q: Specific antibody associated with primary biliary cirrhosis is:

Anti-mitochondrial antibodies. ***Anti-mitochondrial*** - **Anti-mitochondrial antibodies (AMAs)** are the serologic hallmark of **primary biliary cholangitis (PBC)**, previously known as primary biliary cirrhosis. - They are present in about 90-95% of patients with PBC and target enzymes in the inner mitochondrial membrane, particularly the **pyruvate dehydrogenase complex**. *Anti-myosin antibodies* - **Anti-myosin antibodies** are not typically associated with primary biliary cholangitis. - Myosin is a protein found in muscle cells, and antibodies against it are more relevant to certain **myopathies** or cardiac conditions, not liver disease. *Anti-nuclear antibodies* - **Anti-nuclear antibodies (ANAs)** are characteristic of **autoimmune diseases** such as systemic lupus erythematosus, scleroderma, and drug-induced lupus. - While ANAs can be found in a subset of PBC patients, they are not specific for the disease and are not the primary diagnostic antibody. *Anti-endomysial antibodies* - **Anti-endomysial antibodies (EMAs)** are highly specific for **celiac disease**. - They target the endomysium, a type of connective tissue surrounding muscle fibers, and are indicative of gluten-sensitive enteropathy, not primary biliary cholangitis.

Q: All of the following drugs may be used in the treatment of ulcerative colitis except:

Methotrexate. ***Methotrexate*** - While methotrexate is an immunosuppressant used in some autoimmune conditions, it is **not a first-line or commonly used drug for ulcerative colitis**. [2] - Its role in inflammatory bowel disease is primarily established for **Crohn's disease**, not ulcerative colitis. *Corticosteroids* - **Corticosteroids** are commonly used for inducing remission in **moderate to severe ulcerative colitis** due to their potent anti-inflammatory effects. [1] - They are effective for short-term management of flares but are not suitable for long-term maintenance therapy due to significant side effects. *Sulfasalazine* - **Sulfasalazine** is an aminosalicylate (5-ASA) drug, frequently used for the **induction and maintenance of remission in mild to moderate ulcerative colitis**. [1] - It works by reducing inflammation in the colon. *Azathioprine* - **Azathioprine** is an immunosuppressant often used for **maintaining remission in moderate to severe ulcerative colitis** when corticosteroids cannot be tapered or are ineffective. - It helps reduce the need for long-term corticosteroid use and can prevent disease flares.

Q: What disease is associated with ascitic fluid SAAG < 1.1?

Peritoneal carcinomatosis. Peritoneal carcinomatosis - A serum-ascites albumin gradient (SAAG) less than 1.1 g/dL indicates that the ascites is not due to portal hypertension [1]. - In peritoneal carcinomatosis, the malignant cells in the peritoneum disrupt the normal fluid exchange, leading to fluid accumulation that is low in albumin relative to serum [1]. Liver failure - Liver failure, especially when leading to cirrhosis, is typically associated with portal hypertension and a SAAG ≥ 1.1 g/dL [1]. - The high SAAG reflects the increased hydrostatic pressure in the hepatic sinusoids, forcing fluid low in protein into the peritoneal cavity [1]. Portal vein thrombosis - Portal vein thrombosis causes portal hypertension and would therefore be associated with a high SAAG (≥ 1.1 g/dL) [1]. - The obstruction of the portal vein leads to increased sinusoidal hydrostatic pressure, similar to other causes of portal hypertension [1]. Tuberculosis peritonitis - Tuberculosis peritonitis is an inflammatory condition that can cause ascites, but it is typically associated with a SAAG < 1.1 g/dL [1]. - This is because the inflammatory process in the peritoneum allows for the leakage of albumin into the ascitic fluid, diminishing the gradient [1].

Q: Portal hypertension is said to be present if portal venous pressure is more than:

10 mm Hg. ***10 mm Hg*** - Portal hypertension is defined by a **hepatic venous pressure gradient (HVPG)** greater than 5 mmHg, but significant clinical consequences usually arise when the **portal venous pressure** exceeds **10 mmHg** [1]. - A persistent elevation above this threshold leads to the development of complications such as **ascites**, **varices**, and **splenomegaly** [1]. *3-5 mm Hg* - A portosystemic gradient of 3-5 mmHg is considered **normal portal pressure**, indicating no significant obstruction or resistance to portal flow [1]. - Pressures within this range do not cause the clinical manifestations associated with portal hypertension. *5-10 mm Hg* - While a **hepatic venous pressure gradient (HVPG)** greater than 5 mmHg technically defines portal hypertension, clinical symptoms typically do not appear until the pressure exceeds 10 mmHg [1]. - This range represents **mild portal hypertension** which may not be clinically significant. *12-15 mm Hg* - Pressures in the range of 12-15 mmHg indicate **severe portal hypertension**, which is often associated with a high risk of complications such as **esophageal variceal bleeding**. - This is a critical threshold for developing serious clinical sequelae, not the lower limit for defining portal hypertension.

Q: Which of the following is the most specific risk factor for esophageal cancer in Plummer-Vinson syndrome?

Associated with esophageal webs. ***Risk factor for adenocarcinoma*** - Patterson-Kelly-Brown syndrome is **not** known to be a direct risk factor for adenocarcinoma, which makes this statement false. - The syndrome primarily involves esophageal symptoms without a proven link to increased cancer risk. *Anemia* - Anemia is a common feature in Patterson-Kelly-Brown syndrome due to **iron deficiency** from poor dietary intake or malabsorption. - It may also result from chronic blood loss associated with esophageal webs. *Esophageal webs* - Esophageal webs are a hallmark of Patterson-Kelly-Brown syndrome, causing **dysphagia** and other swallowing difficulties. - They are formed due to mucosal alterations and are a classic manifestation of the condition. *Glossitis* - Glossitis, or inflammation of the tongue, is often observed in patients with Patterson-Kelly-Brown syndrome due to **iron deficiency** and **nutritional deficiencies**. - It is associated with the underlying nutritional issues that often accompany the syndrome.

Question 1

Which of the following is the most sensitive and specific test for acute pancreatitis?

Accepted Answer

S.lipase

Answer

S.amylase

Answer

S.Alanine transaminase

Answer

C-reactive protein

Question 2

Which of the following is MOST characteristic of gastric ulcers compared to duodenal ulcers?

Accepted Answer

Hematemesis is more common than melena in gastric ulcers

Answer

Pain is more common during the day than at night.

Answer

Pain is relieved with ingestion of food

Answer

Usually occurs in older adults.

Question 3

In men, what quantity of ethyl alcohol consumed daily for more than 10 years increases the relative risk of developing alcoholic liver disease?

Accepted Answer

40g/d

Answer

20g/d

Answer

60g/d

Answer

80g/d

Question 4

Which of the following is the most common screening test for acute pancreatitis?

Accepted Answer

Serum lipase

Answer

Urine trypsinogen

Answer

Insulin

Answer

Serum amylase

Question 5

Which of the following is a common prognostic factor for Acute Pancreatitis?

Accepted Answer

Serum Calcium

Answer

Serum Glucose

Answer

Serum AST

Answer

Serum Amylase

Question 6

Specific antibody associated with primary biliary cirrhosis is:

Accepted Answer

Anti-mitochondrial antibodies

Answer

Anti-myosin antibodies

Answer

Anti-nuclear antibodies

Answer

Anti-endomysial antibodies

Question 7

All of the following drugs may be used in the treatment of ulcerative colitis except:

Accepted Answer

Methotrexate

Answer

Corticosteroids

Answer

Sulfasalazine

Answer

Azathioprine

Question 8

What disease is associated with ascitic fluid SAAG < 1.1?

Accepted Answer

Peritoneal carcinomatosis

Answer

Liver failure

Answer

Portal vein thrombosis

Answer

Tuberculosis peritonitis

Question 9

Portal hypertension is said to be present if portal venous pressure is more than:

Accepted Answer

10 mm Hg

Answer

3-5 mm Hg

Answer

5-10 mm Hg

Answer

12-15 mm Hg

Question 10

Which of the following is the most specific risk factor for esophageal cancer in Plummer-Vinson syndrome?

Accepted Answer

Associated with esophageal webs

Answer

Risk factor for adenocarcinoma

Answer

Associated with iron-deficiency anemia

Answer

Causes glossitis

Gastroenterology — MCQs

Gastroenterology — MCQs

On this page

Practice by Chapter

Want unlimited practice?