Neonatology Practice Questions

Q: Which of the following are normal findings in a term neonate, EXCEPT?

Erythema nodosum. **Explanation:** The correct answer is **D. Erythema nodosum**. **Why Erythema Nodosum is the correct answer:** Erythema nodosum is a form of panniculitis (inflammation of subcutaneous fat) characterized by tender, red nodules, typically on the shins. It is **not** a normal finding in neonates; rather, it is a hypersensitivity reaction to various triggers such as infections (Streptococcal, TB, fungal), drugs (sulfonamides), or systemic diseases (Sarcoidosis, IBD). In neonates, a similar-looking but distinct condition is *Subcutaneous Fat Necrosis*, which is also pathological. **Analysis of Incorrect Options (Normal Findings):** * **A. Mongolian spots:** These are congenital dermal melanocytosis appearing as blue-grey patches, usually over the lumbosacral area. They are common in Asian and dark-skinned infants and typically fade by early childhood. * **B. Erythema toxicum (neonatorum):** A benign, self-limiting rash appearing in 50% of term neonates within 24–48 hours. It features small papules/pustules on an erythematous base. A key diagnostic feature is the presence of **eosinophils** on a Tzanck smear. * **C. Subconjunctival hemorrhages:** These are common and result from the pressure changes and rupture of small capillaries during vaginal delivery. They are asymptomatic and resolve spontaneously within 1–2 weeks. **NEET-PG High-Yield Pearls:** * **Milium:** Tiny white papules on the nose/cheeks due to retained keratin (normal). * **Epstein pearls:** Whitish-yellow cysts on the hard palate (normal). * **Harlequin color change:** Transient deep red color on one half of the body when the infant lies on their side (normal). * **Salmon patch (Stork bite):** Capillary hemangioma on the nape of the neck or eyelids (normal).

Q: A primigravida mother presents with her 3-week-old male infant, who has a noisy breathing sound. The infant is afebrile, sleeping well, and feeding well. On clinical examination, the infant is normal. What is the appropriate management protocol?

Reassure and give saline nasal drops. ### Explanation The clinical presentation describes a classic case of **Neonatal Snuffles** (Physiological Nasal Congestion). In a 3-week-old infant who is otherwise healthy, feeding well, and gaining weight, noisy breathing is most commonly due to the narrow nasal passages of a neonate being partially obstructed by dried secretions or milk reflux. **Why Option B is Correct:** The absence of fever, respiratory distress (retractions/tachypnea), or feeding difficulties points toward a benign, physiological cause rather than an infection or structural anomaly. **Saline nasal drops** help liquefy mucus, and **reassurance** is the mainstay of management as the condition is self-limiting and improves as the nasal passages grow. **Why Other Options are Incorrect:** * **Option A (IV Antibiotics):** Incorrect because the infant is afebrile and clinically stable; there are no signs of neonatal sepsis or pneumonia. * **Option C (Racemic Epinephrine):** Used for upper airway obstruction like Croup (Laryngotracheobronchitis). This infant has no stridor or respiratory distress. * **Option D (Chest X-ray):** Unnecessary exposure to radiation. A CXR is indicated for lower respiratory tract pathology, which is ruled out by the normal clinical examination. **NEET-PG High-Yield Pearls:** * **Stridor vs. Snuffles:** If the noise were inspiratory and worsened when supine, consider **Laryngomalacia** (the most common cause of congenital stridor). * **Choanal Atresia:** If the infant had cyclical cyanosis (blue when quiet, pink when crying), suspect bilateral choanal atresia. * **Red Flags:** Always check for "sucking-in" (retractions), nasal flaring, or poor feeding before diagnosing simple snuffles. If these are absent, conservative management is the rule.

Q: A 2-day-old neonate, born at 33 weeks of gestation and weighing 1.5 kg, has had 3 episodes of apnea, each lasting for approximately 25 seconds and occurring after feeding. During these episodes, there was bradycardia and cyanosis of the extremities. Blood sugar is 50 mg/dL and serum calcium is normal. Which of the following is true regarding the apneic periods?

Due to an immature respiratory center. **Explanation:** The clinical presentation describes **Apnea of Prematurity (AOP)**. In a preterm neonate (33 weeks), the most common cause of apnea is an **immature respiratory center**. **1. Why Option C is Correct:** Apnea is defined as the cessation of breathing for >20 seconds, or shorter if accompanied by bradycardia or cyanosis. In preterm infants, the brainstem's respiratory control center is underdeveloped. This leads to an impaired response to hypercapnia and an exaggerated inhibitory response to hypoxia. The fact that episodes occur after feeding (often due to vasovagal reflexes or GERD) in a stable preterm infant further supports AOP. **2. Why Other Options are Incorrect:** * **Option A (Seizures):** While seizures can cause apnea, they are usually accompanied by other rhythmic movements (e.g., bicycling, lip-smacking) and are less likely to be the primary cause in a stable 33-weeker without other neurological signs. * **Option B (Hypoglycemia):** The neonate’s blood sugar is 50 mg/dL, which is within the normal range for a 2-day-old (typically >40–45 mg/dL). Therefore, hypoglycemia is not the trigger here. * **Option D (Pulmonary Disease):** While RDS or pneumonia can cause apnea, they typically present with respiratory distress (grunting, retractions, tachypnea) between episodes. This infant appears stable otherwise. **NEET-PG High-Yield Pearls:** * **Management:** The drug of choice for Apnea of Prematurity is **Caffeine Citrate** (preferred over Theophylline due to a wider therapeutic index and longer half-life). * **Positioning:** Prone positioning can reduce apnea episodes but should only be done under continuous monitoring in a NICU setting. * **Resolution:** AOP typically resolves by 36–37 weeks of post-menstrual age.

Q: What is the most common cause of urinary tract infection in neonates?

E. coli. **Explanation:** **Correct Option: A. E. coli** In neonates, urinary tract infections (UTIs) are primarily caused by organisms originating from the maternal fecal flora or the infant's own gastrointestinal tract. **Escherichia coli** is the most common pathogen across all age groups, including neonates, accounting for approximately 80% of cases. In the neonatal period, UTIs are more common in males (especially uncircumcised) and are often associated with **hematogenous spread** (bacteremia) rather than the ascending route typical in older children. **Analysis of Incorrect Options:** * **B. S. aureus:** While *S. aureus* can cause UTIs via the hematogenous route during neonatal sepsis, it is significantly less common than Gram-negative bacilli. * **C. Enterococcus:** *Enterococcus species* (Group D Streptococci) are known causes of neonatal UTI and sepsis, but they rank second or third behind *E. coli* and *Klebsiella*. * **D. Anaerobes:** Anaerobic bacteria are extremely rare causes of UTI. They are typically only considered in cases of structural abnormalities or chronic obstructive uropathy. **High-Yield Clinical Pearls for NEET-PG:** * **Gender Predominance:** In the neonatal period, UTIs are more common in **males** (M:F ratio ~3:1). After the first year of life, the incidence shifts significantly toward females. * **Route of Infection:** In neonates, the primary route is **hematogenous**; in older children, it is **ascending**. * **Associated Findings:** Any neonate with a UTI must be evaluated for **Vesicoureteral Reflux (VUR)** or structural anomalies like Posterior Urethral Valves (PUV) via ultrasound and MCUG (Micturating Cystourethrogram). * **Other Pathogens:** After *E. coli*, the next most common organisms are *Klebsiella pneumoniae*, *Enterococcus*, and *Proteus*.

Q: What is the most common cause of seizures in a newborn on day 1 of life?

Hypoxia. **Explanation:** **Hypoxic-Ischemic Encephalopathy (HIE)**, resulting from perinatal asphyxia, is the most common cause of neonatal seizures, accounting for approximately 60-80% of cases. These seizures typically manifest within the **first 24 hours of life** (Day 1). The underlying mechanism involves a lack of oxygen and blood flow to the brain, leading to ATP depletion, failure of the sodium-potassium pump, and neuronal depolarization. **Analysis of Options:** * **Hypoxia (Correct):** The primary cause of seizures on Day 1. It often presents as subtle or clonic seizures in a neonate with a history of fetal distress or low Apgar scores. * **Hypocalcemia:** Early-onset hypocalcemia (first 72 hours) is common in infants of diabetic mothers or preterm babies, but it is a less frequent primary cause than HIE. Late-onset hypocalcemia (after 72 hours) is usually due to high phosphate intake (cow's milk). * **Hypoglycemia:** While a common metabolic trigger, it usually occurs in the context of other stressors or specific risk factors (SGA, IDM) and is statistically less common than HIE as a solitary cause of seizures on Day 1. * **Intrauterine Infections (TORCH):** These typically present with other systemic signs (hepatosplenomegaly, rash, microcephaly) and are a much rarer cause of acute seizures compared to birth asphyxia. **High-Yield Clinical Pearls for NEET-PG:** * **Timing is Key:** * **0–24 hours:** HIE (Most common), Hypoglycemia. * **24–72 hours:** Intraventricular hemorrhage (IVH), Subarachnoid hemorrhage, Metabolic disorders. * **>72 hours:** Meningitis, Septicemia, Drug withdrawal. * **Drug of Choice:** Phenobarbitone remains the first-line anticonvulsant for neonatal seizures. * **Most common type:** Subtle seizures (e.g., eye blinking, rowing, pedaling) are the most frequent clinical presentation in neonates.

Q: What is the recommended daily protein requirement for a preterm infant?

3.5-4 gm/kg. **Explanation:** The correct answer is **D (3.5-4 gm/kg)**. **Why it is correct:** Preterm infants have significantly higher protein requirements compared to term infants to facilitate "catch-up growth" and match the intrauterine growth rate (the rate at which a fetus would grow during the third trimester). To achieve a weight gain of approximately 15–20 g/kg/day, a high protein-to-energy ratio is essential. Current guidelines (including WHO and ESPGHAN) recommend a protein intake of **3.5 to 4.5 g/kg/day** for very low birth weight (VLBW) infants to prevent postnatal growth restriction and support neurodevelopment. **Why other options are incorrect:** * **A (0.5-1 gm/kg):** This is grossly inadequate and would lead to a negative nitrogen balance and muscle wasting. * **B (1.5-2 gm/kg):** This is the maintenance requirement for an **older child or a term neonate** (approx. 2 g/kg/day), but it is insufficient for the rapid growth needs of a preterm baby. * **C (2.5-3 gm/kg):** While better, this range often results in suboptimal growth in extremely premature infants. It may be acceptable for late preterms, but the standard recommendation for preterm management focuses on the higher 3.5-4 g/kg range. **High-Yield Clinical Pearls for NEET-PG:** * **Energy Requirement:** Preterm infants require **110–130 kcal/kg/day** for adequate growth. * **Protein-Energy Ratio:** For optimal protein utilization, an infant needs roughly 25–30 kcal for every gram of protein. * **Early Initiation:** "Aggressive nutrition" (starting amino acids at 2–3 g/kg/day within the first hours of life) is now standard to prevent the "metabolic shock" of birth. * **Monitoring:** Blood Urea Nitrogen (BUN) and serum albumin are used to monitor if protein intake is adequate or excessive.

Q: After delivery, Caput succedaneum typically disappears within what timeframe?

24-48 hours. **Explanation:** **Caput succedaneum** is a common neonatal scalp condition characterized by a diffuse, edematous swelling of the soft tissues. It is caused by pressure from the cervix on the presenting part of the fetal head during labor, leading to local venous and lymphatic obstruction. 1. **Why A is correct:** Because the fluid is located in the **subcutaneous tissue** (above the periosteum), it is easily reabsorbed by the lymphatic system once the mechanical pressure of labor is removed. This resolution typically occurs rapidly, usually within **24 to 48 hours** after birth. 2. **Why B, C, and D are incorrect:** These timeframes are more characteristic of **Cephalhematoma**. Unlike Caput, a Cephalhematoma is a subperiosteal hemorrhage that takes much longer (weeks to months) to resolve because blood takes longer to organize and resorb than simple edema. **High-Yield Clinical Pearls for NEET-PG:** * **Crosses Sutures:** Caput succedaneum **crosses suture lines** (diffuse), whereas Cephalhematoma is limited by sutures (localized). * **Timing:** Caput is present **at birth**; Cephalhematoma often appears a few hours after birth as the bleeding progresses. * **Complications:** Caput is benign and requires no treatment. Cephalhematoma may lead to jaundice (due to bilirubin from broken-down RBCs) or underlying linear skull fractures. * **Subgaleal Hemorrhage:** Always differentiate these from Subgaleal hemorrhage, which is a surgical emergency involving bleeding between the aponeurosis and periosteum, presenting as a rapidly expanding, fluctuant mass.

Question 1

Which of the following are normal findings in a term neonate, EXCEPT?

Accepted Answer

Erythema nodosum

Answer

Mongolian spots

Answer

Erythema toxicum

Answer

Subconjunctival hemorrhages

Question 2

A primigravida mother presents with her 3-week-old male infant, who has a noisy breathing sound. The infant is afebrile, sleeping well, and feeding well. On clinical examination, the infant is normal. What is the appropriate management protocol?

Accepted Answer

Reassure and give saline nasal drops

Answer

Begin IV antibiotics

Answer

Give racemic epinephrine

Answer

Order for a chest X-ray

Question 3

In a neonate, what is the indication for chest compressions?

Accepted Answer

Persistent bradycardia with a heart rate of 50 despite 30 seconds of positive pressure ventilation

Answer

Irregular breathing with a heart rate of 80 after 30 seconds of ventilation

Answer

Regular breathing with a heart rate of 80 after 30 seconds of ventilation

Answer

Regular breathing with cyanosis unresponsive to oxygen

Question 4

A 2-day-old neonate, born at 33 weeks of gestation and weighing 1.5 kg, has had 3 episodes of apnea, each lasting for approximately 25 seconds and occurring after feeding. During these episodes, there was bradycardia and cyanosis of the extremities. Blood sugar is 50 mg/dL and serum calcium is normal. Which of the following is true regarding the apneic periods?

Accepted Answer

Due to an immature respiratory center

Answer

Due to seizures

Answer

Secondary to hypoglycemia

Answer

Evidence of underlying pulmonary disease

Question 5

What is the most common cause of urinary tract infection in neonates?

Accepted Answer

E. coli

Answer

S. aureus

Answer

Enterococcus

Answer

Anaerobes

Question 6

Which of the following does NOT meet the criteria for pathological jaundice?

Accepted Answer

Onset 24 hours or later but within 72 hours

Answer

Persistence for more than 14 days

Answer

Conjugated bilirubin level greater than 2 mg/dL

Answer

Clay-colored stools

Question 7

What is the most common cause of seizures in a newborn on day 1 of life?

Accepted Answer

Hypoxia

Answer

Hypocalcemia

Answer

Hypoglycemia

Answer

Intrauterine infections

Question 8

Which age group most often presents with jaundice due to Omphalitis in infants?

Accepted Answer

3-6 weeks

Answer

At birth

Answer

24-72 hours

Answer

1-3 weeks

Question 9

What is the recommended daily protein requirement for a preterm infant?

Accepted Answer

3.5-4 gm/kg

Answer

0.5-1 gm/kg

Answer

1.5-2 gm/kg

Answer

2.5-3 gm/kg

Question 10

After delivery, Caput succedaneum typically disappears within what timeframe?

Accepted Answer

24-48 hours

Answer

3-5 days

Answer

5-7 days

Answer

7-10 days

Neonatology — MCQs

Neonatology — MCQs

On this page

Practice by Chapter

Want unlimited practice?