Gastroenterology — MCQs
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Albumin treatment along with antibiotics in the setting of spontaneous bacterial peritonitis (SBP) is indicated to prevent the development of hepatorenal syndrome, EXCEPT in which of the following situations?
A 73-year-old woman admitted with mild, spontaneously resolving upper GI hemorrhage, not requiring transfusion, had a history of significant aspirin ingestion over 4 months for rheumatoid arthritis pain. Endoscopy confirmed a duodenal ulcer, and biopsy was positive for H. pylori. What is the recommended next step in managing this duodenal ulcer?
Palmar erythema is seen in all of the following conditions except?
Portal hypertension is defined as hepatic venous pressure gradient more than:
Venoocclusive disease is seen in all except?
Acalculous cholecystitis can be seen in all of the following conditions except?
Abdominal pain, fat malabsorption, and frothy stools suggest which of the following conditions?
Which investigation is considered the gold standard for diagnosing GERD?
Which of the following statements regarding gluten-sensitive enteropathy is not true?
A 65-year-old woman with a history of Hashimoto's thyroiditis presented with symptoms of malabsorption. Following evaluation, she was diagnosed with atrophic gastritis. Which of the following is NOT a feature of this patient's condition?
Gastroenterology Indian Medical PG Practice Questions and MCQs
Question 631: Albumin treatment along with antibiotics in the setting of spontaneous bacterial peritonitis (SBP) is indicated to prevent the development of hepatorenal syndrome, EXCEPT in which of the following situations?
- A. Serum creatinine is > 1 mg/dl
- B. Blood urea nitrogen (BUN) > 30 mg/dl
- C. Total bilirubin is > 4 mg/dl
- D. International Normalized Ratio (INR) > 2 (Correct Answer)
Explanation: In Spontaneous Bacterial Peritonitis (SBP), the administration of intravenous albumin (1.5 g/kg on day 1 and 1.0 g/kg on day 3) significantly reduces the risk of renal failure and mortality. However, according to the **AASLD guidelines**, albumin is specifically indicated only if certain biochemical thresholds are met, as it provides the most benefit to high-risk patients. **Explanation of Options:** The criteria for administering albumin in SBP are: 1. **Serum Creatinine > 1 mg/dL** (Option A) 2. **Blood Urea Nitrogen (BUN) > 30 mg/dL** (Option B) 3. **Total Bilirubin > 4 mg/dL** (Option C) If a patient meets any of the above criteria, albumin is mandatory [1]. **INR > 2 (Option D)** is a marker of impaired synthetic function and severity of cirrhosis (MELD score), but it is **not** a validated criterion for initiating albumin therapy in SBP. **Why Albumin?** SBP causes systemic vasodilation and a decrease in effective arterial blood volume, leading to Hepatorenal Syndrome (HRS). Albumin acts as a plasma expander and has antioxidant properties that protect renal perfusion [1]. **High-Yield Clinical Pearls for NEET-PG:** * **Diagnosis of SBP:** Absolute Neutrophil Count (ANC) in ascitic fluid **≥ 250 cells/mm³**. * **Most common organism:** *E. coli* (Gram-negative). * **Empiric Antibiotic of Choice:** 3rd generation cephalosporins (e.g., Cefotaxime). * **Prophylaxis:** Indicated if ascitic fluid protein is < 1.5 g/dL with associated renal or hepatic impairment [2]. Norfloxacin or Rifaximin are commonly used.
Question 632: A 73-year-old woman admitted with mild, spontaneously resolving upper GI hemorrhage, not requiring transfusion, had a history of significant aspirin ingestion over 4 months for rheumatoid arthritis pain. Endoscopy confirmed a duodenal ulcer, and biopsy was positive for H. pylori. What is the recommended next step in managing this duodenal ulcer?
- A. H2 blockers
- B. Bipolar electrocautery of the ulcer
- C. Triple therapy (Correct Answer)
- D. Photocoagulation
Explanation: **Explanation:** The management of peptic ulcer disease (PUD) focuses on addressing the underlying etiology to promote healing and prevent recurrence [1]. In this patient, two major risk factors are present: **chronic NSAID (Aspirin) use** and **H. pylori infection** [1]. **1. Why Triple Therapy is Correct:** The presence of *H. pylori* is a definitive indication for eradication therapy, regardless of NSAID use [1]. Eradicating the organism significantly reduces the rate of ulcer recurrence and complications [1]. Standard **Triple Therapy** (Proton Pump Inhibitor + Clarithromycin + Amoxicillin/Metronidazole) is the first-line treatment. Even though aspirin contributed to the ulcer [1], failing to treat the infection leaves the patient at high risk for future bleeds. **2. Why Incorrect Options are Wrong:** * **H2 Blockers (A):** While they reduce acid, they are less potent than PPIs and do not address the *H. pylori* infection. They are no longer the standard of care for active ulcer healing when more effective options exist. * **Bipolar Electrocautery (B) & Photocoagulation (D):** These are **endoscopic hemostatic interventions**. They are indicated for *active* bleeding, visible vessels, or adherent clots (high-risk Forrest classification). Since the patient’s hemorrhage was mild and resolved spontaneously without the need for transfusion, invasive mechanical or thermal therapy is not indicated. **Clinical Pearls for NEET-PG:** * **Most common cause of PUD:** *H. pylori* (Duodenal > Gastric). * **Second most common cause:** NSAIDs (Gastric > Duodenal). * **Investigation of choice for PUD:** Upper GI Endoscopy (UGIE). * **Test of Cure:** Always perform a urea breath test or stool antigen test 4 weeks after completing therapy to confirm eradication [1]. * **NSAID management:** If possible, NSAIDs should be discontinued. If mandatory, co-prescription with a PPI is required for prophylaxis.
Question 633: Palmar erythema is seen in all of the following conditions except?
- A. Pregnancy
- B. Anemia (Correct Answer)
- C. Cirrhosis
- D. Wilson disease
Explanation: **Explanation:** Palmar erythema is a clinical sign characterized by a symmetrical, mottled reddening of the palms, specifically over the thenar and hypothenar eminences. The underlying pathophysiology is primarily related to **hyperdynamic circulation** and **increased levels of circulating estrogen**, which lead to capillary dilatation. **Why Anemia is the Correct Answer:** Anemia is characterized by **pallor** of the palmar creases [1] and conjunctiva [1] due to reduced hemoglobin levels. While severe anemia can cause a hyperdynamic state, it does not typically manifest as palmar erythema. Therefore, it is the "except" in this list. **Analysis of Other Options:** * **Pregnancy (Option A):** High levels of endogenous estrogen during pregnancy cause increased vascularity and capillary dilatation, making palmar erythema a common physiological finding (seen in ~60-70% of pregnancies). * **Cirrhosis (Option B):** This is the most classic association. In chronic liver disease, the liver's ability to metabolize estrogen is impaired. Elevated estrogen levels and increased nitric oxide production lead to peripheral vasodilation and palmar erythema. * **Wilson Disease (Option D):** As a cause of chronic hepatitis and eventually cirrhosis, Wilson disease leads to palmar erythema via the same mechanism of hepatic insufficiency and altered hormone metabolism. **NEET-PG High-Yield Pearls:** * **Distribution:** Palmar erythema typically spares the central portion of the palm. * **Other Causes:** Thyrotoxicosis (due to increased cardiac output), Rheumatoid Arthritis (RA), and Chronic Febrile illnesses. * **Liver Signs:** Often co-exists with **Spider Angiomata** (also estrogen-dependent). * **Clinical Note:** It is not specific to liver disease but serves as a marker for altered sex hormone metabolism or systemic vasodilation.
Question 634: Portal hypertension is defined as hepatic venous pressure gradient more than:
- A. 1 mm Hg
- B. 5 mm Hg (Correct Answer)
- C. 10 mm Hg
- D. 20 mm Hg
Explanation: **Explanation:** Portal hypertension is defined by an increase in the **Hepatic Venous Pressure Gradient (HVPG)**. The HVPG is the difference between the wedged hepatic venous pressure (representing sinusoidal pressure) and the free hepatic venous pressure (representing systemic venous pressure) [1]. 1. **Why 5 mm Hg is correct:** The normal HVPG ranges between **1 to 5 mm Hg** [1]. Portal hypertension is clinically defined as an HVPG **>5 mm Hg**. This represents the earliest hemodynamic threshold where portal pressures exceed the normal physiological range. 2. **Analysis of Incorrect Options:** * **1 mm Hg (Option A):** This is within the lower limit of the normal range and does not constitute hypertension. * **10 mm Hg (Option C):** This is the threshold for **Clinically Significant Portal Hypertension (CSPH)** [1]. At this level, complications like esophageal varices and ascites begin to develop. * **20 mm Hg (Option D):** This is a high-risk threshold associated with a significantly increased risk of active variceal bleeding and failure to control bleeding despite treatment. **High-Yield Clinical Pearls for NEET-PG:** * **HVPG >5 mm Hg:** Definition of Portal Hypertension [1]. * **HVPG ≥10 mm Hg:** Clinically Significant Portal Hypertension (CSPH); predicts the development of varices [1]. * **HVPG ≥12 mm Hg:** Threshold for **variceal rupture/bleeding**. * **Gold Standard:** HVPG measurement via the transjugular route is the gold standard for assessing portal pressure, as direct portal vein catheterization is invasive and risky [1].
Question 635: Venoocclusive disease is seen in all except?
- A. Bone marrow transplant
- B. Bush teas
- C. Mushroom poisoning (Correct Answer)
- D. Cytosine arabinoside
Explanation: **Explanation:** **Veno-occlusive disease (VOD)**, now more commonly referred to as **Sinusoidal Obstruction Syndrome (SOS)**, involves the non-thrombotic obstruction of hepatic venules and sinusoids by subendothelial swelling and collagen deposition [1]. **Why Mushroom Poisoning is the Correct Answer:** Mushroom poisoning, specifically from *Amanita phalloides* (Death Cap), contains **amatoxins**. These toxins cause **massive centrilobular hepatic necrosis** (fulminant hepatic failure) rather than the vascular/sinusoidal obstruction seen in VOD [2]. While both lead to liver damage, the pathophysiological mechanism of mushroom poisoning is direct hepatocyte death, not venous outflow obstruction. **Analysis of Incorrect Options:** * **Bone Marrow Transplant (BMT):** This is the most common cause of VOD/SOS in modern clinical practice. It occurs due to the toxic effects of high-dose **pre-transplant conditioning regimens** (chemotherapy and total body irradiation) on the sinusoidal endothelial cells [1]. * **Bush Teas:** Historically, VOD was described in populations consuming "bush teas" containing **Pyrrolizidine alkaloids** (found in plants like *Crotalaria* and *Senecio*). These alkaloids are metabolized into toxic pyrroles that damage the sinusoidal lining. * **Cytosine Arabinoside (Ara-C):** This is a chemotherapeutic agent known to be associated with VOD, especially when used in high doses or in combination with other alkylating agents during induction or conditioning therapy [1]. **NEET-PG High-Yield Pearls:** * **Clinical Triad of VOD:** Painful hepatomegaly, jaundice, and fluid retention (weight gain/ascites). * **Diagnosis:** Primarily clinical (Modified Seattle Criteria or Baltimore Criteria). In contrast to Budd-Chiari, the large hepatic veins appear patent radiologically [1]. * **Key Histology:** Fibrous obliteration of small hepatic venules and congestion of sinusoids [1]. * **Drug of Choice:** **Defibrotide** is used for the treatment of severe hepatic VOD post-HSCT as it promotes fibrinolysis [1].
Question 636: Acalculous cholecystitis can be seen in all of the following conditions except?
- A. Dengue hemorrhagic fever
- B. Malaria (Correct Answer)
- C. Leptospirosis
- D. Enteric fever
Explanation: **Explanation:** **Acalculous cholecystitis (AC)** is the inflammation of the gallbladder in the absence of gallstones. It typically occurs in critically ill patients due to gallbladder stasis and ischemia [1]. **Why Malaria is the Correct Answer:** While malaria (especially *P. falciparum*) can cause multi-organ dysfunction, it is **not** a recognized or typical cause of acalculous cholecystitis. Jaundice in malaria is primarily pre-hepatic (hemolysis) or due to malarial hepatitis (hepatocellular damage), rather than primary gallbladder inflammation. **Analysis of Other Options:** * **Dengue Hemorrhagic Fever:** AC is a well-documented complication of Dengue. It occurs due to increased vascular permeability leading to gallbladder wall edema and serous effusion, often seen during the critical phase. * **Leptospirosis:** This zoonosis can cause AC through direct bacterial invasion or systemic vasculitis. It is often part of the clinical spectrum in severe cases (Weil’s disease) alongside jaundice and renal failure. * **Enteric Fever (Typhoid):** *Salmonella typhi* can colonize the gallbladder. While it more commonly leads to a chronic carrier state in patients with stones, acute acalculous cholecystitis can occur during the second or third week of the illness due to lymphatic spread or direct invasion. **Clinical Pearls for NEET-PG:** * **Most common cause:** AC is most frequently seen in patients in the **ICU** (post-major surgery, severe trauma, burns, or prolonged TPN) [1]. * **Diagnosis:** **Ultrasonography** is the initial investigation of choice (look for wall thickening >4mm, pericholecystic fluid, and a positive sonographic Murphy’s sign). * **HIDA Scan:** This is the most sensitive imaging modality for AC if ultrasound is inconclusive. * **Other infectious causes:** HIV (CMV or Cryptosporidium), Cholera, and Polyarteritis Nodosa (PAN).
Question 637: Abdominal pain, fat malabsorption, and frothy stools suggest which of the following conditions?
- A. Amoebiasis
- B. Bacillary dysentery
- C. Giardiasis (Correct Answer)
- D. Pancreatic enzyme deficiency
Explanation: **Giardiasis** is caused by the protozoan *Giardia lamblia*, which primarily colonizes the duodenum and upper jejunum [1]. The parasite attaches to the intestinal mucosa via a ventral sucking disc, leading to the blunting of villi and functional malabsorption. The hallmark clinical presentation includes **foul-smelling, frothy, greasy stools (steatorrhea)** that float in water, accompanied by abdominal bloating, flatulence, and weight loss. The "frothy" nature is due to excess gas produced by bacterial fermentation of unabsorbed nutrients. **Why other options are incorrect:** * **Amoebiasis:** Caused by *Entamoeba histolytica*, it typically presents with bloody diarrhea (dysentery), tenesmus, and "anchovy sauce" liver abscesses [2]. It involves the colon rather than the small intestine, so fat malabsorption is not a feature. * **Bacillary dysentery:** Caused by *Shigella*, it presents with high-grade fever, severe abdominal cramps, and small-volume stools containing blood and mucus (inflammatory diarrhea), not malabsorptive stools. * **Pancreatic enzyme deficiency:** While this causes steatorrhea and fat malabsorption [3], it is usually a chronic condition (e.g., Chronic Pancreatitis) associated with deep-seated epigastric pain radiating to the back and history of alcohol use. In the context of standard NEET-PG questions, "frothy stools" is a classic buzzword for Giardiasis. **Clinical Pearls for NEET-PG:** * **Diagnosis:** Stool microscopy (Trophozoites with "Owl's eye" appearance or Cysts) or Entero-test (String test). * **Drug of Choice:** Tinidazole (single dose) or Metronidazole. * **Association:** Common in patients with **IgA deficiency**. * **Site:** It does not invade the bloodstream; it remains luminal/mucosal [1].
Question 638: Which investigation is considered the gold standard for diagnosing GERD?
- A. 24-hour esophageal pH monitoring (Correct Answer)
- B. Upper GI endoscopy
- C. Barium meal follow-through
- D. Barium swallow
Explanation: **Explanation:** **1. Why 24-hour esophageal pH monitoring is the Gold Standard:** Gastroesophageal Reflux Disease (GERD) is fundamentally defined by the abnormal reflux of gastric contents into the esophagus. The **24-hour ambulatory pH monitoring** is the gold standard because it provides a quantitative assessment of esophageal acid exposure. It measures the percentage of time the pH drops below 4, correlates symptoms with reflux episodes (Symptom Index), and calculates the **DeMeester Score**. It is particularly essential for patients with persistent symptoms despite PPI therapy or those with atypical (extra-esophageal) symptoms. **2. Analysis of Incorrect Options:** * **Upper GI Endoscopy (EGD):** While often the *first-line* investigation to rule out complications (like Barrett’s esophagus or malignancy), it has low sensitivity for GERD. Up to 60-70% of patients have **NERD (Non-Erosive Reflux Disease)**, where the endoscopy appears completely normal. * **Barium Swallow/Meal:** These are useful for identifying structural abnormalities like hiatal hernias, strictures, or achalasia, but they cannot reliably diagnose or quantify acid reflux. **3. High-Yield Clinical Pearls for NEET-PG:** * **Investigation of Choice (Initial):** Upper GI Endoscopy (to check for "red flags" like dysphagia or weight loss). * **Bravo pH Monitoring:** A newer, wireless capsule method that is better tolerated than the transnasal catheter. * **Impedance-pH Monitoring:** The preferred test for detecting **non-acid reflux** (alkaline reflux). * **Treatment of Choice:** Lifestyle modifications + Proton Pump Inhibitors (PPIs). * **Surgical Gold Standard:** Laparoscopic Nissen Fundoplication (360 wrap).
Question 639: Which of the following statements regarding gluten-sensitive enteropathy is not true?
- A. It is also known as celiac sprue.
- B. Anti-gliadin antibodies are present.
- C. Consumption of barley, rice, oats, and wheat should be avoided. (Correct Answer)
- D. Cryptitis does not occur in gluten-sensitive enteropathy.
Explanation: **Explanation:** **1. Why Option C is the correct answer (The "False" statement):** In Gluten-Sensitive Enteropathy (Celiac Disease), patients must strictly avoid **BROW**—**B**arley, **R**ye, **O**ats (due to cross-contamination), and **W**heat [1]. However, **Rice and Corn** are gluten-free and are safe alternatives. Therefore, the statement that "rice should be avoided" is incorrect, making Option C the right choice for this "not true" question. **2. Analysis of other options:** * **Option A:** Celiac sprue is the synonymous term for gluten-sensitive enteropathy, characterized by an immune-mediated inflammatory response to gluten in genetically predisposed individuals (HLA-DQ2/DQ8) [1]. * **Option B:** Anti-gliadin antibodies (IgA and IgG) are classic markers, though **Anti-Tissue Transglutaminase (tTG) IgA** is now the preferred screening test due to higher sensitivity and specificity. * **Option D:** While Celiac disease is characterized by villous atrophy and crypt **hyperplasia**, active **cryptitis** (neutrophilic infiltration of the crypts) is a hallmark of Inflammatory Bowel Disease (IBD), not Celiac disease [1]. Thus, the statement that cryptitis does not occur is generally considered true in the context of classic histopathology. **Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Small intestinal biopsy showing **Villous atrophy, Crypt hyperplasia, and increased Intraepithelial Lymphocytes (IELs).** [1] * **Dermatological Association:** **Dermatitis Herpetiformis** (itchy vesicles on extensors) is highly specific. * **Malignancy Risk:** Long-term untreated Celiac disease increases the risk of **Enteropathy-associated T-cell lymphoma (EATL).** * **Best Screening Test:** IgA anti-tTG. (Note: Always check total IgA levels to rule out selective IgA deficiency).
Question 640: A 65-year-old woman with a history of Hashimoto's thyroiditis presented with symptoms of malabsorption. Following evaluation, she was diagnosed with atrophic gastritis. Which of the following is NOT a feature of this patient's condition?
- A. Anti-parietal cell antibodies
- B. Excessive acid production in the stomach (Correct Answer)
- C. Endocrine cell hyperplasia
- D. Vitamin B12 deficiency
Explanation: This patient presents with **Autoimmune Atrophic Gastritis (Type A Gastritis)**, a condition frequently associated with other autoimmune disorders like Hashimoto's thyroiditis [2]. ### **Why Option B is Correct** In Autoimmune Atrophic Gastritis, the immune system produces antibodies against **parietal cells** and **intrinsic factor** [2]. Parietal cells are responsible for secreting hydrochloric acid (HCl). Their destruction leads to **achlorhydria** (absence of acid) or severe hypochlorhydria, not excessive acid production. Therefore, Option B is the incorrect feature. ### **Explanation of Other Options** * **Option A (Anti-parietal cell antibodies):** These are present in approximately 90% of patients and are the primary mediators of gland destruction in the fundus and body of the stomach. * **Option C (Endocrine cell hyperplasia):** Due to the lack of acid, the negative feedback loop on G-cells is lost, leading to **hypergastrinemia**. Persistent high gastrin levels stimulate the hyperplasia of Enterochromaffin-like (ECL) cells, which can eventually progress to carcinoid tumors. * **Option D (Vitamin B12 deficiency):** Parietal cell loss results in a deficiency of **Intrinsic Factor**. This leads to Vitamin B12 malabsorption, resulting in Megaloblastic anemia (Pernicious Anemia) and neurological symptoms (Subacute Combined Degeneration) [1]. ### **High-Yield Clinical Pearls for NEET-PG** * **Location:** Type **A** affects the **A**natomical Body/Fundus (spares the antrum). Type **B** is associated with **B**acteria (*H. pylori*) and affects the Antrum. * **Biopsy Findings:** Diffuse mucosal atrophy, loss of rugae, and intestinal metaplasia (increased risk of gastric adenocarcinoma). * **Associated Conditions:** Vitiligo, Type 1 Diabetes, and Addison’s disease (Autoimmune Polyendocrine Syndromes). * **Key Lab Marker:** Elevated serum gastrin levels (secondary to achlorhydria).
Practice by Chapter
Esophageal Disorders
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Peptic Ulcer Disease
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Inflammatory Bowel Disease
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Irritable Bowel Syndrome
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Malabsorption Syndromes
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Pancreatitis (Acute and Chronic)
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Gastrointestinal Bleeding
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Liver Diseases and Cirrhosis
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Viral Hepatitis
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Biliary Tract Disorders
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Gastrointestinal Motility Disorders
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Gastrointestinal Malignancies
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