Gastroenterology Practice Questions

Q: A 40-year-old woman presents with pruritus, jaundice, and hepatomegaly. Labs show elevated ALP and antimitochondrial antibodies. What is the likely diagnosis?

Primary biliary cholangitis. ***Primary biliary cholangitis*** - The classic presentation includes **pruritus**, **jaundice**, and **hepatomegaly** in a middle-aged woman [1], combined with **elevated alkaline phosphatase (ALP)** and **positive antimitochondrial antibodies (AMA)**. - AMA are highly specific for PBC, and the elevated ALP indicates **cholestasis**, consistent with bile duct destruction [1]. *Hemochromatosis* - This condition involves **iron overload**, leading to symptoms like fatigue, joint pain, and skin bronzing, not typically pruritus and jaundice initially. - Diagnosis is based on **elevated ferritin**, **transferrin saturation**, and **genetic testing for HFE mutations** [2], not AMA. *Alcoholic hepatitis* - Characterized by a history of **heavy alcohol consumption**, with symptoms like fever, jaundice, and RUQ pain. - Lab findings usually show **elevated AST and ALT** (AST:ALT ratio > 2:1), and possibly elevated GGT, but not specific AMA. *Viral hepatitis* - Acute viral hepatitis often presents with fatigue, nausea, vomiting, and jaundice, preceded by a flu-like illness. - The diagnosis is confirmed by detecting **viral antigens or antibodies** (e.g., HBsAg, anti-HCV) [2], and AMA are not characteristic.

Q: Which of the following is the MOST common complication associated with GERD?

Esophagitis. ***Esophagitis*** - **Reflux of gastric acid** into the esophagus directly irritates the esophageal lining, leading to inflammation and cellular damage, commonly presenting as esophagitis [1]. - This recurrent irritation causes histological changes such as **basal cell hyperplasia** and **elongation of papillae**, which are hallmarks of reflux-induced injury [1]. *Chronic cough* - While chronic cough can be a symptom of GERD, it is considered an **extraesophageal manifestation** rather than a direct complication of esophageal mucosal damage. - Its prevalence is lower than esophagitis among GERD complications and it's less direct consequence of acid exposure to the esophagus itself. *Dental erosion* - **Acid reflux** can lead to dental erosion due to the direct contact of acidic gastric contents with tooth enamel. - However, this is less common than esophagitis, which is a direct and frequent consequence of **mucosal acid exposure** within the esophagus [1].

Q: A 20-year-old chronic alcoholic presents with severe hematemesis. USG shows distension of portal vein and the liver appears hyperechoic. Pantoprazole has been initiated. What is the next step in management?

Perform an endoscopy to identify and treat varices. **Perform an endoscopy to identify and treat varices** - Severe **hematemesis** in a chronic alcoholic with signs of **portal hypertension** (distended portal vein, hyperechoic liver) strongly suggests bleeding esophageal varices [1]. - **Endoscopy** is crucial for both diagnosing the source of bleeding and providing immediate therapeutic intervention, such as **variceal band ligation** or **sclerotherapy** [1]. *Administer IV fluids and electrolytes to stabilize hemodynamics* - While **hemodynamic stabilization with IV fluids** is an immediate and critical step in managing severe GI bleeding, it is not the *next step in definitive management* after pantoprazole initiation, which aims to address the *cause* of the bleeding. - This is an initial supportive measure, but addressing the source of hemorrhage is paramount once stabilization begins [1]. *Order a liver biopsy to assess for fibrosis* - A **liver biopsy** is primarily used for diagnosing the underlying cause and severity of liver disease, such as **cirrhosis** and **fibrosis**. - It is not an urgent procedure in the context of acute, severe hematemesis and would delay critical interventions to stop the bleeding. *Initiate a course of broad-spectrum antibiotics* - **Antibiotics** are indeed utilized in patients with cirrhosis and upper GI bleeding to prevent **spontaneous bacterial peritonitis** and other infections, often administered *after* hemodynamic stabilization and initial endoscopic management. - However, stopping the active bleeding is the immediate priority before initiating prophylactic antibiotics.

Q: A 45-year-old man with chronic liver disease presents with ascites and severe edema. Which diuretic combination is most suitable to manage his condition?

Spironolactone and Furosemide. ***Spironolactone and Furosemide*** - **Spironolactone**, an **aldosterone antagonist**, is crucial because **secondary hyperaldosteronism** often contributes to sodium and water retention in patients with chronic liver disease and ascites. - **Furosemide**, a **loop diuretic**, provides potent diuresis by inhibiting sodium reabsorption in the **thick ascending limb of the loop of Henle**, effectively reducing fluid overload. *Acetazolamide and Mannitol* - **Acetazolamide**, a **carbonic anhydrase inhibitor**, has a relatively weak diuretic effect and is not typically used for significant ascites due to chronic liver disease. - **Mannitol**, an **osmotic diuretic**, is primarily used for cerebral edema or acute renal failure, not for chronic fluid retention in liver disease, as it can worsen volume status. *Metolazone and Torsemide* - **Metolazone**, a **thiazide-like diuretic**, can be effective in combination with loop diuretics for refractory edema but is not the first-line combination for initial management of ascites in chronic liver disease. - **Torsemide** is a loop diuretic, similar to furosemide, but typically not combined with metolazone as a primary strategy without prior trials of spironolactone and a loop diuretic. *Hydrochlorothiazide and Amiloride* - **Hydrochlorothiazide**, a **thiazide diuretic**, is less potent than loop diuretics and generally less effective in patients with advanced liver disease and significant ascites. - **Amiloride**, a **potassium-sparing diuretic**, is weaker than spironolactone and does not block aldosterone, making it less effective in combating the pathophysiology of ascites in liver disease.

Q: A patient with known cirrhosis presents with jaundice and abdominal distention. Ultrasound reveals ascites and splenomegaly. What is the most likely cause of his ascites?

Portal hypertension. ***Portal hypertension*** - In cirrhosis, **fibrosis** and **regenerative nodules** increase resistance to blood flow through the liver, leading to **portal hypertension** [1]. - This increased pressure in the portal venous system, combined with **splanchnic vasodilation** and **renal sodium retention**, drives the transudation of fluid into the peritoneal cavity, forming ascites [1]. *Peritoneal carcinomatosis* - This would typically result in **exudative ascites**, often with a high protein content and positive cytology for malignant cells [1]. - While it can cause abdominal distention, it is not directly linked to the pathology of **cirrhosis** and **splenomegaly** as the primary cause of ascites in this context. *Nephrotic syndrome* - Characterized by **massive proteinuria**, **hypoalbuminemia**, and **generalized edema**, including ascites. - While it causes fluid retention, the clinical picture of **jaundice** and **splenomegaly** strongly points to liver pathology rather than primary renal disease [1]. *Congestive heart failure* - Can cause **dependent edema** and ascites due to elevated systemic venous pressures, but typically presents with other signs like **dyspnea**, orthopnea, and pulmonary edema [1]. - The patient's history of **cirrhosis** and the presence of **splenomegaly** make portal hypertension a significantly more likely cause of ascites [1].

Q: A 30-year-old male presents with nausea, vomiting, and abdominal discomfort after consuming large amounts of alcohol. What is the most likely diagnosis?

Acute gastritis. A 30-year-old male presents with nausea, vomiting, and abdominal discomfort after consuming large amounts of alcohol. What is the most likely diagnosis? ***Acute gastritis*** - The patient's symptoms of **nausea**, **vomiting**, and **abdominal discomfort** after acute alcohol consumption are classic for **acute gastritis**. - **Alcohol** is a common irritant that can damage the stomach lining, leading to inflammation [2]. *Esophagitis* - While alcohol can contribute to esophagitis, the primary symptoms typically include **heartburn**, **dysphagia**, and **odynophagia**, which are not described [1]. - Nausea and vomiting originating from the esophagus are usually prominent only with severe inflammation or obstruction. *Cholecystitis* - **Cholecystitis** presents with **right upper quadrant pain**, often radiating to the back or shoulder, and can be associated with fever and leukocytosis. - While nausea and vomiting can occur, the primary symptom is usually localized pain, not diffuse abdominal discomfort following alcohol ingestion. *Peptic ulcer disease* - **Peptic ulcer disease** typically causes **epigastric pain** that can be relieved or exacerbated by food, and symptoms are often chronic or recurrent, not acutely related to a single alcoholic binge [3]. - Though an ulcer can be symptomatic after alcohol, acute gastritis is a more immediate and common consequence of heavy drinking.

Q: Which of the following laboratory findings is most consistent with obstructive jaundice?

Elevated conjugated bilirubin. Elevated conjugated bilirubin - In obstructive jaundice, bile flow is blocked, causing conjugated (direct) bilirubin to back up into the bloodstream, leading to its elevation [2]. - The liver has already conjugated the bilirubin, but it cannot be excreted into the bile ducts due to the obstruction [4]. Elevated unconjugated bilirubin - This finding is typically associated with hemolytic anemias or conditions like Gilbert's syndrome, where there is increased bilirubin production or impaired hepatic uptake/conjugation [1], [3]. - In obstructive jaundice, the primary issue is impaired excretion of conjugated bilirubin, not increased production of unconjugated bilirubin. Decreased alkaline phosphatase - Alkaline phosphatase (ALP) is usually significantly elevated in obstructive jaundice due to increased synthesis and release from bile duct cells in response to cholestasis [5]. - A decreased ALP would be an atypical finding and would not support a diagnosis of obstructive jaundice. Normal gamma-glutamyl transferase - Gamma-glutamyl transferase (GGT) is also typically elevated in obstructive jaundice, often proportionally with ALP, as it is another marker of cholestasis and bile duct damage [5]. - A normal GGT would suggest that the elevated ALP (if present) might be from a non-hepatic source, such as bone, making obstructive jaundice less likely if ALP is not also elevated.

Q: A 55-year-old man with a history of cirrhosis and ascites presents with fever and abdominal pain. Paracentesis reveals an elevated neutrophil count. What is the most likely diagnosis?

Spontaneous bacterial peritonitis. ***Spontaneous bacterial peritonitis*** - The combination of **cirrhosis**, **ascites** [1], **fever**, **abdominal pain**, and an **elevated neutrophil count** (typically >250 cells/mm3) in ascitic fluid is highly characteristic of **spontaneous bacterial peritonitis (SBP)**. - SBP is a common and serious complication of advanced liver disease, often occurring without an obvious source of infection. *Hepatocellular carcinoma* - While common in cirrhosis, **hepatocellular carcinoma** typically presents with weight loss, worsening liver function, or a palpable mass [1], not acute peritonitis symptoms like fever and abdominal pain with elevated ascitic fluid neutrophils. - Diagnosis usually involves imaging (e.g., ultrasound, CT, MRI) and alpha-fetoprotein levels, rather than paracentesis showing bacterial infection. *Biliary colic* - **Biliary colic** is usually caused by gallstones obstructing the cystic duct, leading to severe, intermittent right upper quadrant pain, often radiating to the back. - It does not typically present with diffuse abdominal pain, fever [1], or elevated ascitic fluid neutrophils, especially in the context of cirrhosis and ascites. *Nephrotic syndrome* - **Nephrotic syndrome** is a kidney disorder characterized by proteinuria, hypoalbuminemia, edema, and hyperlipidemia. - While it can cause ascites due to low oncotic pressure, it does not typically present with fever and abdominal pain or an elevated neutrophil count in ascitic fluid, as it is not an infectious process.

Q: Which of the following is the most appropriate initial test for the diagnosis of ascites?

Abdominal ultrasound. ***Abdominal ultrasound*** - An abdominal ultrasound is the **most appropriate initial test** for diagnosing ascites due to its high sensitivity for detecting fluid, non-invasiveness, and cost-effectiveness [1]. - It can identify even small amounts of **peritoneal fluid** and often helps determine the underlying cause by evaluating the liver and other abdominal organs [1]. *CT scan of the abdomen* - While a CT scan can detect ascites, it is generally **not the initial diagnostic test of choice** due to higher cost and radiation exposure [1]. - It is typically reserved for cases where ultrasound findings are equivocal or when further characterization of abdominal pathology is needed [1]. *Abdominal X-ray* - An abdominal X-ray has **poor sensitivity** for detecting ascites, especially small to moderate amounts of fluid. - It primarily identifies features like **bowel gas patterns** or calcifications and is not adequate for confirming fluid accumulation. *Paracentesis* - Paracentesis is a **diagnostic and therapeutic procedure** used to analyze ascitic fluid, not the initial imaging test for diagnosis. - It is performed after ascites has been detected (often by ultrasound) to determine its **etiology** (e.g., infection, malignancy) or to relieve symptoms.

Q: A 45-year-old male presents with hematemesis and melena. He is hemodynamically stable. What is the most appropriate initial diagnostic test?

Upper endoscopy. ***Upper endoscopy*** - **Hematemesis** (vomiting blood) and **melena** (black, tarry stools) are classic signs of an **upper gastrointestinal bleed** [1]. - **Upper endoscopy** allows direct visualization of the esophagus, stomach, and duodenum to identify the bleeding source (e.g., ulcers, varices) and potentially provide therapeutic intervention [2]. *Colonoscopy* - This procedure is used to visualize the **lower gastrointestinal tract** (colon and rectum). - While melena can sometimes originate from the small bowel or right colon, hematemesis strongly points to an upper GI source, making colonoscopy an inappropriate initial diagnostic choice. *Abdominal ultrasound* - An **abdominal ultrasound** is excellent for evaluating solid organs (e.g., liver, gallbladder, kidneys) and detecting fluid collections. - It does not directly visualize the GI mucosa or lumen to identify the source of active bleeding. *CT scan of the abdomen* - A **CT scan of the abdomen** can identify gross pathologies and sometimes show active bleeding, but it is less sensitive for mucosal lesions and does not allow for direct therapeutic intervention. - It is generally reserved for cases where endoscopy is inconclusive or contraindicated, or when there is suspicion of a mass or perforation.

Question 1

A 40-year-old woman presents with pruritus, jaundice, and hepatomegaly. Labs show elevated ALP and antimitochondrial antibodies. What is the likely diagnosis?

Accepted Answer

Primary biliary cholangitis

Answer

Hemochromatosis

Answer

Alcoholic hepatitis

Answer

Viral hepatitis

Question 2

Which of the following is the MOST common complication associated with GERD?

Accepted Answer

Esophagitis

Answer

Chronic cough

Answer

Dental erosion

Answer

None of the options

Question 3

A 20-year-old chronic alcoholic presents with severe hematemesis. USG shows distension of portal vein and the liver appears hyperechoic. Pantoprazole has been initiated. What is the next step in management?

Accepted Answer

Perform an endoscopy to identify and treat varices

Answer

Administer IV fluids and electrolytes to stabilize hemodynamics

Answer

Order a liver biopsy to assess for fibrosis

Answer

Initiate a course of broad-spectrum antibiotics

Question 4

A 45-year-old man with chronic liver disease presents with ascites and severe edema. Which diuretic combination is most suitable to manage his condition?

Accepted Answer

Spironolactone and Furosemide

Answer

Acetazolamide and Mannitol

Answer

Metolazone and Torsemide

Answer

Hydrochlorothiazide and Amiloride

Question 5

A patient with known cirrhosis presents with jaundice and abdominal distention. Ultrasound reveals ascites and splenomegaly. What is the most likely cause of his ascites?

Accepted Answer

Portal hypertension

Answer

Peritoneal carcinomatosis

Answer

Nephrotic syndrome

Answer

Congestive heart failure

Question 6

A 30-year-old male presents with nausea, vomiting, and abdominal discomfort after consuming large amounts of alcohol. What is the most likely diagnosis?

Accepted Answer

Acute gastritis

Answer

Esophagitis

Answer

Cholecystitis

Answer

Peptic ulcer disease

Question 7

Which of the following laboratory findings is most consistent with obstructive jaundice?

Accepted Answer

Elevated conjugated bilirubin

Answer

Elevated unconjugated bilirubin

Answer

Decreased alkaline phosphatase

Answer

Normal gamma-glutamyl transferase

Question 8

A 55-year-old man with a history of cirrhosis and ascites presents with fever and abdominal pain. Paracentesis reveals an elevated neutrophil count. What is the most likely diagnosis?

Accepted Answer

Spontaneous bacterial peritonitis

Answer

Hepatocellular carcinoma

Answer

Biliary colic

Answer

Nephrotic syndrome

Question 9

Which of the following is the most appropriate initial test for the diagnosis of ascites?

Accepted Answer

Abdominal ultrasound

Answer

CT scan of the abdomen

Answer

Abdominal X-ray

Answer

Paracentesis

Question 10

A 45-year-old male presents with hematemesis and melena. He is hemodynamically stable. What is the most appropriate initial diagnostic test?

Accepted Answer

Upper endoscopy

Answer

Colonoscopy

Answer

Abdominal ultrasound

Answer

CT scan of the abdomen

Gastroenterology — MCQs

Gastroenterology — MCQs

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