Gastroenterology Practice Questions

Q: Which of the following statements are correct with regard to Budd-Chiari syndrome? 1. Venous drainage of liver is occluded by hepatic vein thrombosis. 2. It most commonly affects the young males. 3. It is associated with protein C, protein S and antithrombin III deficiency. 4. Abdominal discomfort and ascites are the most common features associated with acute thrombosis.

1, 3 and 4. ***1, 3 and 4*** - **Budd-Chiari syndrome** is characterized by the **occlusion of hepatic venous outflow**, typically due to **thrombosis** in the hepatic veins or inferior vena cava [1]. - It is frequently associated with **hypercoagulable states**, including deficiencies of **protein C, protein S, and antithrombin III**, and commonly presents acutely with **abdominal discomfort, ascites**, and hepatomegaly due to acute thrombosis [1], [2]. *1, 2 and 3* - This option is incorrect because Budd-Chiari syndrome does not most commonly affect young males; it has a variable incidence and can affect both sexes, often in their early adulthood or middle age. - While venous drainage occlusion and association with hypercoagulable states are correct, the demographic statement renders this option partially incorrect. *1, 2 and 4* - This option is incorrect because the statement that Budd-Chiari syndrome most commonly affects young males is not accurate; it has a broader demographic distribution. - The other points regarding venous occlusion and clinical features are correct, but the demographic inaccuracy makes this option incorrect. *2, 3 and 4* - This option is incorrect because statement 2, claiming that Budd-Chiari syndrome most commonly affects young males, is not consistently true. - While deficiencies like protein C, protein S, and antithrombin III, as well as symptoms like abdominal discomfort and ascites, are indeed associated, the demographic claim invalidates this choice.

Q: Which of the following statements regarding peptic ulcers are correct? 1. Duodenal ulcers are more common as compared to gastric ulcers. 2. Helicobacter pylori and NSAIDs are most common causative agents. 3. Bleeding is the most common complication associated with posterior duodenal ulcer.

1 and 2 only. ***1 and 2 only*** - **Duodenal ulcers** are significantly more common than gastric ulcers, with a ratio of about 4:1 [1]. - The two primary causes of peptic ulcers are infection with **_Helicobacter pylori_** and the use of **non-steroidal anti-inflammatory drugs (NSAIDs)** [1]. *2 and 3 only* - While _**H. pylori**_ and **NSAIDs** are indeed the most common causes, the statement incorrectly assumes that bleeding is the most common complication associated with **posterior duodenal ulcers**, when the most common complication of all peptic ulcers is **hemorrhage** but it is more specifically associated with posterior duodenal ulcers due to proximity to the **gastroduodenal artery**. - Hence, the second and third statements are individually correct, but the first statement which says duodenal ulcers are more common then gastric ulcers is also correct. *1, 2 and 3* - While statements 1 and 2 are correct individually, statement 3, which attributes bleeding as the most common complication specifically to posterior duodenal ulcers, is correct because posterior duodenal ulcers are particularly prone to bleeding due to the proximity of the **gastroduodenal artery** [1]. - Thus, all three statements are individually correct, but the combination chosen is redundant. *1 and 3 only* - This option is flawed because it omits statement 2, which correctly identifies **_H. pylori_** and **NSAIDs** as the primary causes of peptic ulcers [1]. - Although posterior duodenal ulcers are associated with bleeding, statement 3 is not complete enough without the inclusion of statement 2.

Q: Which of the following is the LEAST invasive initial treatment option for achalasia? 1. Botulinum toxin 2. Beta blockers 3. Pneumatic dilation 4. Heller's myotomy

2. Beta blockers. ***Beta blockers*** - This is incorrect as **beta blockers** are not a recognized treatment for achalasia. - Achalasia management focuses on reducing **lower esophageal sphincter (LES)** pressure, which beta blockers do not achieve [1]. *Pneumatic dilation* - While less invasive than surgery, **pneumatic dilation** involves stretching the LES using a balloon, which carries risks such as perforation [2]. - It is generally considered a more invasive intervention than endoscopic injection therapies, and not initial treatment [2]. *Heller's myotomy* - This is a **surgical procedure** to cut the muscle fibers of the LES, making it the most invasive option among those listed [2]. - It is typically reserved for cases where less invasive treatments have failed or for patients who prefer a more definitive, long-term solution. *Botulinum toxin* - **Botulinum toxin** injection into the LES is a less invasive endoscopic procedure [2]. - It temporarily relaxes the LES by inhibiting acetylcholine release, though its effects are not permanent and repeated injections may be necessary [2].

Q: Which of the following scoring systems are PRIMARILY designed for assessing the severity of acute pancreatitis?

1. Ranson and Glasgow score. ***Ranson and Glasgow score*** - The **Ranson criteria** and the **Glasgow Coma Scale** (also known as the Imrie score) are classical scoring systems specifically developed and widely used to assess the **severity of acute pancreatitis** [1]. - Both scores incorporate multiple clinical and laboratory parameters evaluated at admission and within the first 48 hours to predict the likelihood of complications and mortality in acute pancreatitis. *APACHE score* - The **Acute Physiology, Age, Chronic Health Evaluation (APACHE) score** (e.g., APACHE II, APACHE III) is a general severity-of-illness classification system for critically ill patients and is not specific to acute pancreatitis. - While it can be applied to patients with acute pancreatitis in the ICU, it's designed for a **broader range of critical illnesses** rather than primarily for pancreatitis. *MELD score* - The **Model for End-Stage Liver Disease (MELD) score** is used to assess the severity of **chronic liver disease** and predict prognosis, particularly for patients awaiting liver transplantation. - It is **not designed for acute pancreatitis** and is irrelevant in this context. *Modified Marshall score* - The **Modified Marshall scoring system** is primarily used to assess **organ dysfunction** in acute pancreatitis, especially in clinical trials or for defining severe acute pancreatitis. - While relevant to pancreatitis severity, it is more focused on **specific organ systems' failure** rather than providing a global predictive score for overall severity and mortality in the same way Ranson or Glasgow scores do.

Q: The 'gold standard' for the diagnosis of GORD (Gastro-Oesophageal Reflux Disease) is

24-hour pH recording. ***24-hour pH recording*** - This method directly measures the **frequency** and **duration of acid exposure** in the esophagus, providing objective evidence of reflux. - It is considered the gold standard because it can **quantify reflux episodes** and correlate them with patient symptoms. *upper GI endoscopy* - While useful for visualizing **mucosal damage** [1] (esophagitis, strictures, Barrett's esophagus) caused by reflux, it does not directly measure or confirm reflux itself. - Many patients with GORD symptoms have **normal endoscopic findings**, making it unsuitable as the gold standard for diagnosis. *CT scan* - A CT scan is not typically used for diagnosing GORD. - It is more useful for identifying **structural abnormalities** or **complications** of reflux, such as tumors or hiatal hernias. *barium meal follow through* - This imaging technique can identify **structural abnormalities** like hiatal hernia or severe reflux events, but it is not sensitive enough to detect intermittent or mild reflux. - It provides a **snapshot** of reflux and cannot quantify the total acid exposure over a prolonged period.

Q: Motility disorders of the oesophagus are best diagnosed by

Manometry. ***Manometry*** - Oesophageal manometry is the **gold standard** for diagnosing motility disorders by directly measuring the pressure activity and coordination of oesophageal muscle contractions and sphincter function [1]. - It provides **physiologic data** critical for identifying conditions like achalasia, diffuse oesophageal spasm, and ineffective oesophageal motility; high-resolution manometry specifically allows for the accurate classification of these abnormalities [1]. *Barium meal* - A barium meal provides **structural and morphological information** and can show gross motility abnormalities, but it does not quantitatively measure pressure or coordination of contractions [1]. - It is often used as a **screening tool** and can suggest motility disorders, but manometry is needed for definitive diagnosis [1]. *Endoscopy* - Endoscopy is primarily used to visualize the **mucosa** and lumen of the oesophagus, stomach, and duodenum to rule out structural abnormalities like strictures, masses, or inflammation [1, 5]. - While it can indirectly reveal some motility issues (e.g., retained food in achalasia), it does not directly assess the **functional contractile activity** of the oesophageal muscle [1]. *Radiography* - General radiography (X-rays) of the chest or abdomen is primarily used to evaluate **gross anatomical structures** or identify abnormalities like pneumomediastinum or foreign bodies [2]. - It has **limited utility** for evaluating specific oesophageal motility disorders, unlike specialized imaging with contrast (barium swallow) or functional studies (manometry) [1, 4].

Q: Consider the following prognostic parameters of acute pancreatitis : 1. Rise in blood urea nitrogen over 5 mg/dl 2. Hematocrit decrease over 10% 3. Base deficit more than 4 mmol/L 4. Blood glucose over 10 mmol/L Which of the above parameters are important during initial 48 hours ?

1 and 2 only. ***1 and 2 only*** - A **rise in blood urea nitrogen over 5 mg/dL** and a **hematocrit decrease over 10%** within the initial 48 hours are significant early indicators of fluid sequestration and systemic inflammation, which are critical prognostic factors in acute pancreatitis [1]. - These parameters are part of common prognostic scoring systems, like the **Modified Glasgow Score** or **Ranson's Criteria**, used to assess the severity and predict outcomes [1]. *2 and 3 only* - While a **hematocrit decrease over 10%** is a relevant early prognostic indicator, a **base deficit more than 4 mmol/L** (indicating metabolic acidosis) typically emerges later or reflects more severe, established organ dysfunction. - Early prognostic assessment focuses on parameters measurable within the first 48 hours that reflect initial systemic impact. *1, 2 and 3* - **Rise in blood urea nitrogen over 5 mg/dL** and **hematocrit decrease over 10%** are valid early indicators, but a **base deficit more than 4 mmol/L** is not included in the standard initial 48-hour prognostic criteria for acute pancreatitis severity assessment for the first two days [1]. - This option incorrectly includes base deficit as a primary early prognostic parameter. *1, 3 and 4* - **Rise in blood urea nitrogen over 5 mg/dL** is a correct early prognostic parameter. However, a **base deficit more than 4 mmol/L** and **blood glucose over 10 mmol/L** are less specifically emphasized as *initial 48-hour* critical parameters in all common scoring systems. - While hyperglycemia can be present, its specific prognostic cutoff often varies, and it typically contributes to overall severity rather than being a standalone early change in the first 48 hours.

Q: Which one of the following is not a common feature of bile duct stone ?

Distended gall bladder. ***Distended gall bladder*** - A distended gallbladder is **less common** when the obstruction is caused by a stone in the **common bile duct (CBD)** because the gallbladder can often decompress through the cystic duct if it is patent. [1] - Furthermore, **Mirizzi syndrome**, which can cause gallbladder distension due to an impacted stone in the cystic duct compressing the CBD, is a specific and less frequent scenario than simple choledocholithiasis. [2] *Clay colored stools* - **Clay-colored stools** (acholic stools) are a common feature of bile duct obstruction as it prevents bilirubin from reaching the intestines to be converted into **stercobilin**, which gives stool its normal brown color. - The absence of bilirubin in the gut results in stools appearing pale or gray. *Itching* - **Pruritus (itching)** is a very common symptom of bile duct obstruction due to the systemic accumulation of **bile salts** and other pruritic substances that are normally excreted in bile. [3] - These substances deposit in the skin, irritating nerve endings. *Obstructive jaundice* - **Obstructive jaundice** is a hallmark feature of bile duct stones. The obstruction prevents the flow of conjugated bilirubin into the intestine, leading to its reabsorption into the bloodstream. [1] - This results in elevated **conjugated bilirubin** and **icterus**, causing yellow discoloration of the skin and sclera.

Q: To differentiate pancreatic ascites from ascites secondary to cirrhosis of the liver, the most important test is :

Abdominal paracentesis. ***Abdominal paracentesis*** - This procedure involves analyzing the **ascitic fluid**, which is crucial for distinguishing between pancreatic ascites and cirrhosis-related ascites [1]. - In **pancreatic ascites**, the fluid will have a very high **amylase** content and often a high protein level (>2.5 g/dL), whereas in **cirrhosis**, the amylase is typically normal and the protein is usually low (<2.5 g/dL) [1]. *Abdominal ultrasound* - While useful for detecting ascites and underlying liver disease (cirrhosis), it cannot definitively determine the **cause of ascites** or the specific content of the ascitic fluid [2]. - Ultrasound can visualize the pancreas but cannot reliably differentiate pancreatic ascites from other causes without **fluid analysis**. *Endoscopic retrograde cholangiopancreatography (ERCP)* - This is an **invasive procedure** primarily used for diagnosing and treating disorders of the bile ducts and pancreatic duct, such as strictures or stones. - It is not the most important or initial test for differentiating the cause of ascites, as its main role is in identifying **ductal leaks** that might lead to pancreatic ascites, rather than direct fluid analysis. *Computed tomogram (CT) scan* - CT can confirm the presence of ascites, evaluate the **pancreas** for inflammation or pseudocysts, and assess the **liver** for signs of cirrhosis [2]. - However, like ultrasound, a CT scan cannot provide the definitive **biochemical analysis** of the ascitic fluid that is necessary to distinguish pancreatic ascites from other causes.

Question 1

Which of the following statements are correct with regard to Budd-Chiari syndrome?

1. Venous drainage of liver is occluded by hepatic vein thrombosis.
2. It most commonly affects the young males.
3. It is associated with protein C, protein S and antithrombin III deficiency.
4. Abdominal discomfort and ascites are the most common features associated with acute thrombosis.

Accepted Answer

1, 3 and 4

Answer

1, 2 and 3

Answer

1, 2 and 4

Answer

2, 3 and 4

Question 2

Which of the following statements regarding peptic ulcers are correct?

1. Duodenal ulcers are more common as compared to gastric ulcers.
2. Helicobacter pylori and NSAIDs are most common causative agents.
3. Bleeding is the most common complication associated with posterior duodenal ulcer.

Accepted Answer

1 and 2 only

Answer

2 and 3 only

Answer

1, 2 and 3

Answer

1 and 3 only

Question 3

Which of the following is the LEAST invasive initial treatment option for achalasia?

1. Botulinum toxin
2. Beta blockers
3. Pneumatic dilation
4. Heller's myotomy

Accepted Answer

2. Beta blockers

Answer

3. Pneumatic dilation

Answer

4. Heller's myotomy

Answer

1. Botulinum toxin

Question 4

Which of the following scoring systems are PRIMARILY designed for assessing the severity of acute pancreatitis?

Accepted Answer

1. Ranson and Glasgow score

Answer

2. APACHE score

Answer

3. MELD score

Answer

4. Modified Marshall score

Question 5

Which of the following statements about peptic ulcers is correct?

Accepted Answer

Anteriorly located duodenal ulcers are 'more prone for perforation'.

Answer

It is more commonly seen in females.

Answer

The most common location is the third part of duodenum.

Answer

There is no risk of malignancy in gastric ulcers.

Question 6

The 'gold standard' for the diagnosis of GORD (Gastro-Oesophageal Reflux Disease) is

Accepted Answer

24-hour pH recording

Answer

upper GI endoscopy

Answer

CT scan

Answer

barium meal follow through

Question 7

Motility disorders of the oesophagus are best diagnosed by

Accepted Answer

Manometry

Answer

Barium meal

Answer

Endoscopy

Answer

Radiography

Question 8

Consider the following prognostic parameters of acute pancreatitis :

1. Rise in blood urea nitrogen over 5 mg/dl
2. Hematocrit decrease over 10%
3. Base deficit more than 4 mmol/L
4. Blood glucose over 10 mmol/L Which of the above parameters are important during initial 48 hours ?

Accepted Answer

1 and 2 only

Answer

2 and 3 only

Answer

1, 2 and 3

Answer

1, 3 and 4

Question 9

Which one of the following is not a common feature of bile duct stone ?

Accepted Answer

Distended gall bladder

Answer

Clay colored stools

Answer

Itching

Answer

Obstructive jaundice

Question 10

To differentiate pancreatic ascites from ascites secondary to cirrhosis of the liver, the most important test is :

Accepted Answer

Abdominal paracentesis

Answer

Abdominal ultrasound

Answer

Endoscopic retrograde cholangio pancreatography (ERCP)

Answer

Computed tomogram (CT) scan

Gastroenterology — MCQs

Gastroenterology — MCQs

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