Gastroenterology Practice Questions

Q: Baby with diarrhea presents with restlessness, irritability, sunken eyes and baby is thirsty and drinks eagerly. What is the diagnosis of this child?

Some dehydration. ***Some dehydration*** - The combination of **restlessness and irritability**, **sunken eyes**, and **drinking eagerly/thirsty** are classic signs indicating **some dehydration** according to WHO guidelines for assessing dehydration in children with diarrhea. - While significant, these signs do not meet the criteria for severe or very severe dehydration, which typically involve more profound signs like lethargy, inability to drink, or severe skin turgor loss. *Severe dehydration* - This typically presents with **two or more** of the following: **lethargy**, **unconsciousness**, **not able to drink**, or **skin pinch goes back very slowly** (more than 2 seconds). - The child in the scenario is restless and drinking eagerly, which contradicts the signs of severe dehydration. *Very Severe dehydration* - This is not a distinct classification in the primary WHO dehydration assessment for children with diarrhea; it usually falls under "severe dehydration" or implies shock. - The given symptoms, while indicative of dehydration, do not suggest the immediate life-threatening state implied by "very severe." *No dehydration* - A child with no dehydration would typically present as **alert**, with **normal eyes**, **not thirsty**, and a **normal skin pinch**. - The presence of restlessness, sunken eyes, and thirst clearly indicates that the child is experiencing some degree of fluid deficit.

Q: Treatment in a 6-month-old child with acute watery diarrhea without signs of dehydration is:

Mothers milk and household fluids. ***Mothers milk and household fluids*** - For a 6-month-old with **acute watery diarrhea** and **no signs of dehydration**, WHO Plan A management includes continued **breastfeeding (mother's milk)** for nutrition and hydration, along with **extra household fluids** like clean water. - **Note:** Ideally, **ORS should also be given** to prevent dehydration as per WHO guidelines, but among the given options, this is the most appropriate choice as it avoids unnecessary antibiotics. - This focuses on maintaining hydration and supporting recovery through adequate fluid and nutrient intake. *ORS and antibiotics* - While **ORS is actually recommended** in Plan A management (even without dehydration) to prevent progression, this option is incorrect because **antibiotics** are not indicated for acute watery diarrhea. - Most acute watery diarrhea cases are **viral** (rotavirus, norovirus) and self-limiting; antibiotics are reserved for specific bacterial infections with systemic features or bloody diarrhea. - The inclusion of antibiotics makes this option inappropriate. *Mothers milk and antibiotics* - While **mother's milk** is essential, **antibiotics** are unnecessary for uncomplicated acute watery diarrhea without dehydration. - Routine antibiotic use can lead to **antimicrobial resistance** and disrupt the intestinal microbiome, potentially prolonging diarrhea. *All of the options* - This is incorrect because **antibiotics** are not appropriate for routine acute watery diarrhea without signs of bacterial infection or systemic illness. - The correct management avoids unnecessary antibiotic use.

Q: In children, the most common type of polyp is -

Juvenile polyp. ***Juvenile polyp*** - **Juvenile polyps** are the most common type of colorectal polyp found in children, typically occurring in the **rectum** or **sigmoid colon**. - They are generally **benign** and non-neoplastic, characterized by an abundance of **mucus**, cystically dilated glands, and an inflammatory infiltrate. *Familial polyposis* - **Familial polyposis**, or **Familial Adenomatous Polyposis (FAP)**, is a genetic condition characterized by hundreds to thousands of adenomatous polyps in the colon and rectum, with a high risk of **colorectal cancer**. - While it can manifest in childhood or adolescence, it is far less common than juvenile polyps in the general pediatric population. *Multiple adenomatous polyp* - **Multiple adenomatous polyps** are primarily seen in adults and are associated with an increased risk of **malignant transformation**. - While children can develop adenomatous polyps, they are rare and not the most common type of polyp found in the pediatric age group. *Solitary polyp* - The term **solitary polyp** describes the number, not the type, of polyp. While a juvenile polyp can be solitary, this option does not specify the histological nature, which is crucial for diagnosis in children.

Q: Hypertrophic pyloric stenosis typically presents within how many months of birth:

One. ***One*** - **Hypertrophic pyloric stenosis** typically begins to manifest at **3 to 6 weeks of age**, with symptoms commonly starting within the first month of life. - The thickened pylorus leads to progressive gastric outlet obstruction, causing **projectile non-bilious vomiting** that typically starts around 3-4 weeks of age. - Peak incidence occurs around **3-5 weeks**, making the first month the typical presentation period. - Classic signs include a **palpable olive-shaped mass** in the right upper quadrant and **visible gastric peristaltic waves**. *Two* - While some cases may present during the second month, the **peak incidence** occurs earlier, typically by 3-5 weeks of age. - Most infants are already symptomatic before reaching two months of age. - Delayed presentation beyond 6 weeks is less common. *Three* - Three months is beyond the typical presentation window for hypertrophic pyloric stenosis. - The **mean age of onset** is around one month, not three months. - Presentation at three months would be considered atypical and should prompt consideration of alternative diagnoses. *Six* - Six months is far too late for typical hypertrophic pyloric stenosis presentation. - The condition characteristically presents in the **neonatal period** and early infancy, not at six months. - Recurrent vomiting at six months would require evaluation for other causes such as **gastroesophageal reflux**, **food allergies**, or other gastrointestinal pathology.

Q: A 7-year-old girl passed 15 stools in the last 24 hours and vomited thrice in the last 4 hours. She is irritable but drinking fluids. What is the optimal therapy?

ORS. ***Correct: ORS (Oral Rehydration Solution)*** - The child has **some dehydration** (15 stools/24h, irritable, recent vomiting) - **Key feature: She is able to drink fluids** - this is the critical determinant for ORS therapy - According to **WHO Plan B** and **IAP guidelines**, children with some dehydration who can drink should receive ORS - ORS should be given at **75 mL/kg over 4 hours** for some dehydration - This is the **optimal first-line therapy** for this dehydration level *Incorrect: IV fluids* - Too aggressive for a child who can drink fluids - Reserved for **severe dehydration** or inability to tolerate oral intake - Unnecessary invasive intervention with associated risks *Incorrect: IV fluids followed by ORS* - IV therapy is not indicated as first-line when child can drink - This approach is used when IV rehydration is needed initially but child improves - Overtreatment for this clinical scenario *Incorrect: Home fluids* - Insufficient for documented dehydration with high stool frequency - Does not provide the **balanced electrolyte composition** of ORS - Home fluids (water, juices) may worsen electrolyte imbalance

Q: In pediatrics, differential diagnoses for acute appendicitis include all EXCEPT:

Trauma. ***Trauma*** - While trauma can cause abdominal pain, it is **not typically a differential diagnosis for acute appendicitis** as the mechanism of injury and clinical presentation are distinct. - Appendicitis involves inflammation of the appendix, whereas trauma involves direct injury to abdominal organs or tissues. *Gastroenteritis* - **Gastroenteritis** can present with diffuse abdominal pain, nausea, vomiting, and fever, mimicking early symptoms of appendicitis. - However, appendicitis pain often localizes to the right lower quadrant, unlike the more generalized pain of gastroenteritis. *Volvulus* - **Volvulus**, especially in infants and young children, presents with severe, colicky abdominal pain, bilious vomiting, and signs of intestinal obstruction, which can overlap with appendicitis symptoms. - Unlike appendicitis, volvulus involves the twisting of a bowel loop, leading to vascular compromise and often requiring urgent surgical intervention. *Torsion* - **Ovarian torsion** or **testicular torsion** can cause acute, severe unilateral lower abdominal or pelvic pain, mimicking appendicitis due to proximity and similar pain presentation in children. - These conditions are distinct from appendicitis as they involve the twisting of adnexal structures or testes, leading to ischemia.

Q: Congenital pyloric stenosis presents with:

Hypokalemic metabolic alkalosis. ***Hypokalemic metabolic alkalosis*** - **Pyloric stenosis** leads to persistent vomiting of **gastric contents**, rich in hydrochloric acid (HCl), causing loss of H+ ions and resulting in **metabolic alkalosis**. - The loss of gastric fluid also stimulates the **renin-angiotensin-aldosterone system** (RAAS), leading to increased renal potassium excretion and subsequent **hypokalemia**. *Hyperkalemic metabolic acidosis* - This condition is typically seen in states of **renal failure**, **hypoaldosteronism**, or following ingestion of certain toxins, which are not features of pyloric stenosis. - **Metabolic acidosis** is characterized by a decrease in pH and bicarbonate, which is the opposite of what occurs in pyloric stenosis. *Hypokalemic metabolic acidosis* - This can occur with **severe diarrhea**, **renal tubular acidosis**, or diuretic use, none of which are the primary issue in pyloric stenosis. - While **hypokalemia** can be present, the main acid-base disturbance in pyloric stenosis is **metabolic alkalosis**, not acidosis. *Hyperkalemic metabolic alkalosis* - This combination is extremely rare and usually indicates a complex underlying pathology like specific adrenal disorders or certain drug interactions, which are not consistent with the pathophysiology of pyloric stenosis. - **Hyperkalemia** is contrary to the expected electrolyte imbalance in pyloric stenosis, which typically causes potassium loss.

Q: Which of the following is an inflammatory bowel disease in children?

Regional ileitis. ***Regional ileitis*** - Regional ileitis is another name for **Crohn's disease**, which is a type of **inflammatory bowel disease (IBD)** that can affect any part of the gastrointestinal tract, including the ileum, in children and adults. - IBD in children presents with chronic inflammation of the digestive tract, leading to symptoms such as **abdominal pain**, **diarrhea**, and **weight loss**. *Tropical sprue* - Tropical sprue is a **malabsorption syndrome** characterized by abnormalities in the small intestine, but it is caused by environmental factors and infections, not considered an inflammatory bowel disease. - It is typically seen in individuals living in or visiting tropical regions and is not classified as IBD. *Cystic fibrosis* - Cystic fibrosis is a **genetic disorder** that primarily affects the lungs and digestive system by producing thick, sticky mucus. - While it causes digestive issues due to **pancreatic insufficiency**, it is not an inflammatory bowel disease. *Coeliac disease* - Coeliac disease is an **autoimmune condition** triggered by the ingestion of gluten, leading to damage in the small intestine. - It is distinct from IBD as its pathology is primarily immune-mediated in response to gluten and does not involve chronic, idiopathic inflammation characteristic of IBD.

Q: Gallstones in children is caused by all EXCEPT:

Leptospira interrogans infection. ***Leptospira interrogans infection*** - **Leptospirosis**, caused by *Leptospira interrogans*, is a zoonotic infection that can lead to liver and kidney dysfunction, but it is not a direct cause of **gallstone formation** in children. - While it can cause jaundice due to **cholestasis** and **hepatocellular damage**, it does not promote the crystallization of bile components into stones. *Sickle cell anemia* - Children with **sickle cell anemia** are prone to developing **pigment gallstones** due to chronic hemolysis. - The constant breakdown of red blood cells leads to increased **bilirubin** production, which then precipitates in bile to form stones. *Prematurity* - **Premature infants** are at higher risk for gallstone formation due to factors like prolonged **total parenteral nutrition (TPN)**, which can lead to biliary stasis, and immaturity of the enterohepatic circulation. - Their underdeveloped gastrointestinal system and common medical interventions contribute to altered bile composition and flow. *Obesity* - **Obesity** is a significant risk factor for gallstones in children, as it is in adults. - Obese individuals often have increased **cholesterol secretion** into bile and reduced gallbladder motility, leading to the formation of **cholesterol gallstones**.

Q: The most common pathogenic organism causing pyogenic liver abscess in children is:

Staphylococcus aureus. ***Staphylococcus aureus*** - **Staphylococcus aureus** is the **most common cause of pyogenic liver abscess in children**, particularly in neonates and young children. - It typically reaches the liver via hematogenous spread from a primary focus (umbilical infection, skin infections, or bacteremia). - S. aureus causes a more acute presentation with high fever, toxicity, and potential for multiple abscesses. - Treatment requires drainage and anti-staphylococcal antibiotics. *Klebsiella* - **Klebsiella pneumoniae** is the most common cause of pyogenic liver abscess in **adults**, especially in East Asian populations. - While it can occur in children, it is significantly less common than S. aureus in the pediatric age group. - It is associated with diabetes mellitus and can cause metastatic complications like endophthalmitis. *Entamoeba Histolytica* - This protozoan causes **amoebic liver abscess**, which is non-pyogenic and has a different pathophysiology. - Common in endemic tropical regions and presents with a more subacute course. - Diagnosed by serology and responds to metronidazole, unlike bacterial pyogenic abscesses. *H Influenzae* - **Haemophilus influenzae** can cause invasive infections in children, particularly meningitis and epiglottitis. - It is a rare cause of pyogenic liver abscess in children, especially since widespread Hib vaccination. - When it occurs, it's usually in the context of bacteremia in unimmunized children.

Question 1

Baby with diarrhea presents with restlessness, irritability, sunken eyes and baby is thirsty and drinks eagerly. What is the diagnosis of this child?

Accepted Answer

Some dehydration

Answer

Severe dehydration

Answer

Very Severe dehydration

Answer

No dehydration

Question 2

Treatment in a 6-month-old child with acute watery diarrhea without signs of dehydration is:

Accepted Answer

Mothers milk and household fluids

Answer

ORS and antibiotics

Answer

Mothers milk and antibiotics

Answer

All of the options

Question 3

In children, the most common type of polyp is -

Accepted Answer

Juvenile polyp

Answer

Familial polyposis

Answer

Multiple adenomatous polyp

Answer

Solitary polyp

Question 4

Hypertrophic pyloric stenosis typically presents within how many months of birth:

Accepted Answer

One

Answer

Six

Answer

Two

Answer

Three

Question 5

A 7-year-old girl passed 15 stools in the last 24 hours and vomited thrice in the last 4 hours. She is irritable but drinking fluids. What is the optimal therapy?

Accepted Answer

ORS

Answer

IV fluids

Answer

IV fluids followed by ORS

Answer

Home fluids

Question 6

In pediatrics, differential diagnoses for acute appendicitis include all EXCEPT:

Accepted Answer

Trauma

Answer

Gastroenteritis

Answer

Volvulus

Answer

Torsion

Question 7

Congenital pyloric stenosis presents with:

Accepted Answer

Hypokalemic metabolic alkalosis

Answer

Hyperkalemic metabolic acidosis

Answer

Hypokalemic metabolic acidosis

Answer

Hyperkalemic metabolic alkalosis

Question 8

Which of the following is an inflammatory bowel disease in children?

Accepted Answer

Regional ileitis

Answer

Tropical sprue

Answer

Cystic fibrosis

Answer

Coeliac disease

Question 9

Gallstones in children is caused by all EXCEPT:

Accepted Answer

Leptospira interrogans infection

Answer

Sickle cell anemia

Answer

Prematurity

Answer

Obesity

Question 10

The most common pathogenic organism causing pyogenic liver abscess in children is:

Accepted Answer

Staphylococcus aureus

Answer

Klebsiella

Answer

Entamoeba Histolytica

Answer

H Influenzae

Gastroenterology — MCQs

Gastroenterology — MCQs

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