UPSC-CMS 2021 - Pediatrics PYQs Practice Questions

Q: An eight month old male child is brought to the emergency with recurrent episodes of screaming and drawing up of legs. The child appears to be listless in between the attacks. Local examination of abdomen reveals feeling of emptiness in the right iliac fossa and blood stained mucus is found on the finger on rectal examination. The most probable clinical diagnosis in this child is

Acute intussusception. ***Acute intussusception*** - The classic triad of symptoms in an infant – **intermittent abdominal pain** (screaming, drawing up legs), **vomiting**, and **currant jelly stools** (blood-stained mucus) – is highly indicative of intussusception. - The presence of a **"dance sign"** (emptiness in the right iliac fossa due to the displacement of the cecum) and a palpable sausage-shaped mass (though not explicitly stated, implied by emptiness) further supports this diagnosis. *Rectal prolapse* - While rectal prolapse can present with crying and blood in the stool, it would typically involve the **visible protrusion of rectal tissue from the anus**, which is not described. - It does not cause the intermittent severe abdominal pain and listlessness consistent with an acute intestinal obstruction. *Midgut volvulus* - Midgut volvulus typically presents with **bilious vomiting** and signs of acute intestinal obstruction and ischemia (e.g., severe abdominal distension, peritonitis, shock). - While it can cause bloody stools due to ischemia, the characteristic **intermittent pain and asymptomatic periods** between attacks, along with the specific rectal findings, are more characteristic of intussusception. *Caecal volvulus* - Caecal volvulus is more common in **older children or adults** and presents with acute abdominal pain, distension, and signs of large bowel obstruction. - It would not typically present with the intermittent episodes of pain and the classic **"currant jelly" stools** or the "dance sign" seen in intussusception in an infant. [Practice more Pediatrics PYQs on OnCourse]

Q: Which of the following are correct about ectopic ureters? 1. They are more common in males 2. They drain the upper pole of kidney 3. They are associated with duplex ureter 4. They may cause incontinence

2, 3 and 4. ***2, 3 and 4*** - **Statement 2 is correct:** Ectopic ureters in duplex systems typically drain the **upper pole moiety** of the kidney (Weigert-Meyer rule) - **Statement 3 is correct:** Ectopic ureters are most commonly associated with **complete ureteral duplication** (duplex collecting system) - **Statement 4 is correct:** Ectopic ureters can cause **continuous urinary incontinence**, especially in females when insertion is below the sphincter mechanism (vagina, urethra, vestibule) - **Statement 1 is incorrect:** Ectopic ureters are **more common in females** (approximately 80% of cases), not males *1, 2 and 4* - Incorrectly includes statement 1 - ectopic ureters are **more common in females**, not males *1, 2 and 3* - Incorrectly includes statement 1 - ectopic ureters are **more common in females**, not males - Missing statement 4, which is correct - ectopic ureters **do cause incontinence** *1, 2, 3 and 4* - Incorrectly includes statement 1 - ectopic ureters are **more common in females**, not males [Practice more Pediatrics PYQs on OnCourse]

Q: Hepatitis B vaccine administered at birth is

A monovalent vaccine of Hepatitis B. ***A monovalent vaccine of Hepatitis B*** - The **initial dose** of the Hepatitis B vaccine given at birth is a **single-antigen (monovalent)** preparation. It is given as a **standalone vaccine** to ensure prompt protection against Hepatitis B virus. - This early administration is critical for preventing **perinatal transmission** of Hepatitis B from an infected mother to her newborn, and establishing immunity as soon as possible. *A pentavalent vaccine* - **Pentavalent vaccines** typically protect against five different diseases: **Diphtheria, Tetanus, Pertussis (DTP), *Haemophilus influenzae* type b (Hib), and Hepatitis B**. - While Hepatitis B is one component, the vaccine administered at birth is usually monovalent, and the pentavalent vaccine is given later in the infant's immunization schedule. *A fixed combination vaccine of Hepatitis B and Hib* - A fixed combination vaccine of Hepatitis B and **Hib (Haemophilus influenzae type b)** is available and used in some immunization schedules. - However, the **first dose** given at birth is specifically a monovalent Hepatitis B vaccine, not a combined Hib vaccine, to target immediate Hepatitis B protection. *A combined vaccine of inactivated Polio and Hepatitis B* - Combined vaccines that include **inactivated Polio vaccine (IPV)** and **Hepatitis B** do exist but are generally administered later, at 6 weeks and subsequent doses. - The **birth dose** of Hepatitis B vaccine is exclusively for Hepatitis B protection and does not typically include polio antigen. [Practice more Pediatrics PYQs on OnCourse]

Q: The classical triad of congenital defects in Congenital Rubella Syndrome include which of the following? 1. Hydrocephalus 2. Deafness 3. Cardiac malformations 4. Cataract

2, 3 and 4. ***2, 3 and 4*** - The classical triad of congenital defects associated with **Congenital Rubella Syndrome (CRS)** typically refers to **deafness**, **cataracts**, and **cardiac malformations**. - These are the most common and prominent features that result from transplacental infection during early pregnancy. *1, 2 and 3 and 4* - This option incorrectly includes **hydrocephalus** as part of the classical triad. While other neurological manifestations can occur in CRS, hydrocephalus is not a defining feature of the classical triad. - The three most prominent and characteristic defects in CRS are **deafness, cataracts, and cardiac malformations**. *1, 2 and 4* - This option incorrectly includes **hydrocephalus** and omits **cardiac malformations**, which is a key component of the classical triad. - The classical triad specifically highlights defects in the **eyes (cataracts)**, **ears (deafness)**, and **heart (cardiac malformations)**. *1, 2 and 3* - This option incorrectly includes **hydrocephalus** and omits **cataracts**, which is a definitive feature of the classical triad of CRS. - While cardiac and auditory defects (deafness) are part of the triad, ocular defects (cataracts) are equally crucial for the classical definition. [Practice more Pediatrics PYQs on OnCourse]

Question 1

An eight month old male child is brought to the emergency with recurrent episodes of screaming and drawing up of legs. The child appears to be listless in between the attacks. Local examination of abdomen reveals feeling of emptiness in the right iliac fossa and blood stained mucus is found on the finger on rectal examination. The most probable clinical diagnosis in this child is

Accepted Answer

Acute intussusception

Answer

Rectal prolapse

Answer

Midgut volvulus

Answer

Caecal volvulus

Question 2

Which of the following are correct about ectopic ureters?

1. They are more common in males
2. They drain the upper pole of kidney
3. They are associated with duplex ureter
4. They may cause incontinence

Accepted Answer

2, 3 and 4

Answer

1, 2 and 4

Answer

1, 2 and 3

Answer

1, 2, 3 and 4

Question 3

Hepatitis B vaccine administered at birth is

Accepted Answer

A monovalent vaccine of Hepatitis B

Answer

A pentavalent vaccine

Answer

A fixed combination vaccine of Hepatitis B and Hib

Answer

A combined vaccine of inactivated Polio and Hepatitis B

Question 4

The classical triad of congenital defects in Congenital Rubella Syndrome include which of the following?

1. Hydrocephalus
2. Deafness
3. Cardiac malformations
4. Cataract

Accepted Answer

2, 3 and 4

Answer

1, 2 and 3 and 4

Answer

1, 2 and 4

Answer

1, 2 and 3

UPSC-CMS 2021 — Pediatrics