Neonatology Practice Questions

Q: The mother is concerned about the whitish material in the groin of the child. Which is incorrect?

Mostly seen in post-dated delivery. ***Mostly seen in post-dated delivery*** ✗ **INCORRECT STATEMENT** - This is the **FALSE statement** and therefore the correct answer to this negative question. - Vernix caseosa is **most prominent in preterm and term infants**, NOT in post-dated deliveries. - The amount of vernix **decreases significantly or is largely absent** in post-term deliveries (>42 weeks). - Post-term infants often present with **dry, peeling, parchment-like skin** due to absence of protective vernix. *Prevents transepidermal water loss* ✓ **TRUE STATEMENT** - **Vernix caseosa** acts as a **natural moisturizer** and forms a protective barrier on the newborn's skin. - This barrier is crucial in preventing excessive **water loss** from the delicate skin, especially during the transition from aqueous to air environment. - The WHO recommends delaying the first bath to preserve this protective function. *Prevents development of skin infection* ✓ **TRUE STATEMENT** - Vernix contains **antimicrobial peptides** and proteins including **lysozyme**, lactoferrin, and defensins. - These components contribute to the newborn's **innate immunity**, helping to **protect against bacterial and fungal infections** at birth. - Studies show vernix has bactericidal activity against common pathogens like E. coli and Group B Streptococcus. *Vernix caseosa* ✓ **TRUE IDENTIFICATION** - The whitish, creamy material coating the infant in the image, particularly prominent in skin creases like the groin, is characteristic of **vernix caseosa**. - Composed of **sebaceous secretions**, **desquamated fetal epidermal cells**, and lanugo hair. - Formation begins around **20 weeks of gestation** and peaks at term delivery.

Q: The following image shows which test being performed in a neonate?

Guthrie test. ***Guthrie test*** - The image shows a **heel prick test** being performed to collect blood samples on a **filter paper card** (Guthrie card) for newborn screening. - The Guthrie test refers to a specific bacterial inhibition assay that was historically used to detect **phenylketonuria (PKU)** from these collected blood spots, and the term is often used synonymously with newborn screening using filter paper blood spots. *Hypoglycemia screening test* - While blood can be obtained via heel prick for hypoglycemia screening, it typically involves using a **glucometer for immediate measurement**, not collecting dried blood spots on a filter card for later lab analysis. - The card in the image is clearly labeled for "Neonatal Screening," indicating a broader screening purpose. *Foot print test* - A footprint test involves taking an **impression of the baby's foot**, usually with ink, for identification purposes. - It does not involve blood collection or medical testing for metabolic disorders. *Heel prick test* - A heel prick test is the **method of obtaining the blood sample** from the neonate's heel. - However, the question asks what test is being performed, and the sample collection on a **Guthrie card** indicates a specific set of newborn screening tests, often broadly referred to as the Guthrie test.

Q: All are true about the image shown except:

Alert baby. ***Alert baby*** - The infant in the image appears to be severely **emaciated** and is typical of an **SGA infant** or **IUGR**. - These infants are typically **hypoglycemic** and **hypothermic**, making them unlikely to be "alert" but rather **lethargic**. *Term small for date* - The infant shows signs of **intrauterine growth restriction (IUGR)**, presenting with features like **scanty subcutaneous fat** and a relatively **large head** for the body, indicative of a severe wasting process. - The appearance aligns with that of a symmetrical or asymmetrical IUGR baby, which is also referred to as **small for gestational age**. *Large head with loss of subcutaneous fat* - The image shows a disproportionately **large head** in comparison to a very thin body, characteristic of **head sparing** seen in **asymmetrical IUGR** infants where the head growth is prioritized over body fat and length. - The visible **ribs** and **sunken cheeks** confirm significant **loss of subcutaneous fat**, a classic sign of chronic intrauterine malnutrition. *Hairy pinna* - **Hairy pinna** (excessive hair on the ears) can be observed in the image, which is a known feature associated with **intrauterine growth restriction** and specific syndromes like **Cornelia de Lange syndrome**. - This observation further supports the diagnosis of an infant with **growth abnormalities**.

Q: What test is being performed on this neonate in the NICU?

Moro's reflex. ***Moro's reflex*** - The image shows the neonate with arms abducted and extended, and fingers open, characteristic of the **Moro reflex** which is elicited by a sudden sensation of falling or loud noise. - This **primitive reflex** is present at birth and usually disappears by 3-6 months; its assessment is part of a routine neurological examination in newborns. *Transcutaneous bilirubinometry* - This is a non-invasive method to measure **bilirubin levels** in newborns by placing a device on the skin, and the image does not depict such a device or measurement. - While important in the NICU for monitoring **jaundice**, it is not what is being demonstrated in the visual. *Apgar score* - The **Apgar score** is assessed at 1 and 5 minutes after birth, evaluating five parameters: appearance, pulse, grimace, activity, and respiration. - This is a clinical scoring system that cannot be solely determined from a single still image of the baby's posture, as it involves dynamic assessment. *Capillary refill time* - **Capillary refill time** is assessed by blanching the skin (often on the palm or sole) and observing how long it takes for the color to return. - The image does not show direct palpation or measurement of capillary refill, which is a key indicator of **circulation** and hydration status.

Q: The following appearance of a child can occur in which of the following situations:

Meconium aspiration syndrome. ***Meconium aspiration syndrome*** - The image shows a **post-term infant** with **peeling skin** and a **greenish-yellow discoloration** of the skin, umbilical cord, and nails, which is characteristic of meconium staining. - This staining is a key indicator of **fetal distress** and meconium passage in utero, often leading to meconium aspiration syndrome. *Infant of diabetic mother* - Infants of diabetic mothers typically present with **macrosomia** (large for gestational age), **ruddy complexion**, and conditions like **hypoglycemia** or **respiratory distress syndrome**, but not meconium staining as seen here. - They also often have **increased fat deposition**, giving them a plump appearance. *Cold stress* - An infant experiencing **cold stress** would typically present with symptoms like **tachypnea**, **hypoglycemia**, **lethargy**, and a **mottled appearance**, but not the characteristic meconium staining or peeling skin shown. - The primary concern in cold stress is heat loss, leading to metabolic derangements. *Hyaline membrane disease* - Hyaline membrane disease, or **respiratory distress syndrome**, primarily affects **premature infants** due to **surfactant deficiency**, leading to severe respiratory difficulty. - While it causes respiratory distress, it does not typically present with the extensive **skin peeling** and **meconium staining** seen in the image.

Q: All are true about the swelling on scalp of a 2-day old neonate except: (Recent NEET Pattern 2016-17)

Heals from periphery. ***Heals from periphery*** - This is the **INCORRECT statement** about cephalohematoma in a neonate - Cephalohematomas do NOT heal from the periphery like a skin wound - Instead, the blood clot gradually **liquefies and is reabsorbed** over weeks to months (typically 2-3 months) - Resorption occurs uniformly or may even start centrally, not from the edges - This is the **exception** among the given statements *Sub-periosteal bleeding with gradual hardening* - This accurately describes **cephalohematoma**, a common birth injury - It is a **subperiosteal collection of blood** confined by suture lines - The blood undergoes **organization and calcification** over time, leading to gradual hardening - A bony rim may be palpable at the edges after 2-3 weeks *Can lead to prolongation of physiological Jaundice* - Breakdown of red blood cells within the cephalohematoma releases **bilirubin** - This increased bilirubin load can contribute to **prolonged physiological jaundice** - The large blood collection acts as an extravascular source of bilirubin *Painless* - Cephalohematoma is generally **painless** to touch for the neonate - Unlike caput succedaneum or infections, the blood collection does not cause acute pain - The swelling may appear large but is not tender

Q: What investigations and management are indicated in the condition shown in the image?

Hematocrit and partial exchange transfusion with saline. ***Hematocrit and partial exchange transfusion with saline*** - The image shows a neonate with **plethora** (reddish-purple skin discoloration), characteristic of **polycythemia** (venous hematocrit >65%). - **Hematocrit** (venous sample) is the primary investigation to confirm polycythemia. - **Partial exchange transfusion with normal saline** is the **standard treatment** for symptomatic polycythemia, effectively reducing hematocrit from ~70% to ~55% while maintaining blood volume and improving blood flow. - The procedure reduces blood viscosity and prevents complications like hypoglycemia, seizures, renal vein thrombosis, and necrotizing enterocolitis. *Hematocrit and double volume exchange transfusion* - While **hematocrit** is the correct investigation, **double volume exchange transfusion** is NOT indicated for polycythemia. - Double volume exchange (replacing 2× blood volume) is reserved for **severe hemolytic disease with hyperbilirubinemia** (e.g., Rh/ABO incompatibility), not for polycythemia management. - Polycythemia requires only **partial exchange** to reduce hematocrit, not complete blood replacement. *Serum bilirubin and double volume exchange transfusion* - **Serum bilirubin** is not the primary investigation for polycythemia; the clinical picture suggests hyperviscosity, not jaundice. - This combination would be appropriate for severe **hemolytic jaundice**, not polycythemia. - Polycythemia is diagnosed by **elevated hematocrit**, not bilirubin levels. *Serum bilirubin and partial exchange transfusion with saline* - **Serum bilirubin** is not the initial investigation for polycythemia; **hematocrit** is required for diagnosis. - While partial exchange is the correct treatment approach, it must be guided by hematocrit values, not bilirubin levels.

Q: A 2-week-old neonate presents with feeding problems and otitis media. Based on the clinical image, what is the most likely diagnosis?

Pierre Robin sequence. ***Pierre Robin sequence*** - The image clearly exhibits **micrognathia** (small jaw), **glossoptosis** (posterior displacement of the tongue), and a **cleft palate**, which are the classic triad of Pierre Robin sequence. - These features lead to **feeding difficulties** and **airway obstruction** contributing to otitis media due to Eustachian tube dysfunction. *Down syndrome* - Characterized by distinct facial features such as a **flat facial profile**, **epicanthal folds**, and a **single palmar crease**, which are not readily apparent in the provided image. - While feeding problems can occur, the specific combination of micrognathia and cleft palate seen here is not typical of Down syndrome. *Beckwith-Wiedemann syndrome* - Identified by features like **macroglossia** (large tongue), **omphalocele**, **hemihyperplasia**, and an increased risk of tumors, none of which are evident in the image or suggested by the clinical presentation. - Although macroglossia can cause feeding issues, it presents differently than glossoptosis and the primary mandibular hypoplasia seen here. *Hypothyroidism* - In neonates, congenital hypothyroidism presents with symptoms such as **poor feeding**, **lethargy**, **constipation**, and a **hoarse cry**, often accompanied by a large tongue (macroglossia) and umbilical hernia. - While poor feeding is present, the pronounced facial and oral structural anomalies (micrognathia, glossoptosis, cleft palate), are not features of hypothyroidism.

Q: A 2-day-old neonate under phototherapy unit. For exchange transfusion serum bilirubin-albumin ratio should be: (Recent NEET Pattern 2016-17)

$>3.5$. ***$>3.5$*** - A **serum bilirubin-albumin ratio greater than 3.5** is a common guideline indicating the need for exchange transfusion in neonates, especially those at high risk or with rapidly rising bilirubin levels. - This ratio helps assess the risk of **bilirubin-induced neurotoxicity (kernicterus)**, as unbound (free) bilirubin can cross the blood-brain barrier [1]. *$ 35$* - A serum bilirubin-albumin ratio of **greater than 35** would represent an extremely high and clinically improbable value. - Clinically, the bilirubin-albumin ratio is typically used with values in the single digits, making a value of 35 or higher incongruent with standard medical guidelines. *$<35$* - While technically true that $<35$ would include the correct threshold, it is not sufficiently specific to denote the critical value for exchange transfusion. - This range is too broad and does not pinpoint the specific bilirubin-albumin ratio that prompts intervention.

Q: A newborn presents with macrosomia, plethoric appearance, and generalized edema. The image shows:

Infant of diabetic mother. ***Infant of diabetic mother*** - The image shows a **macrosomic** infant with a **plethoric appearance**, generalized **edema**, and a **"cherubic" facial appearance** with a prominent philtrum and perioral cyanosis, all characteristic features of an infant of a diabetic mother. - Maternal diabetes leads to fetal **hyperinsulinemia**, resulting in increased fat deposition, organomegaly, and altered growth patterns. *Achondroplasia* - Achondroplasia is characterized by **proximal limb shortening** (rhizomelia), a large head with a prominent forehead, and a flattened nasal bridge. - The pictured infant does not show these specific skeletal dysplasias. *Hemi-hypertrophy* - Hemi-hypertrophy involves **asymmetric growth**, where one side or part of the body is significantly larger than the other. - The infant in the image exhibits generalized, symmetrical macrosomia rather than unilateral overgrowth. *Albright hereditary osteodystrophy* - Albright hereditary osteodystrophy is a genetic disorder associated with short stature, **obesity**, brachydactyly (short digits), and typically presents with features related to **pseudohypoparathyroidism** (e.g., hypocalcemia, hyperphosphatemia). - The characteristic findings of this syndrome, such as brachydactyly, are not evident in the image.

Question 1

The mother is concerned about the whitish material in the groin of the child. Which is incorrect?

Accepted Answer

Mostly seen in post-dated delivery

Answer

Prevents transepidermal water loss

Answer

Prevents development of skin infection

Answer

Vernix caseosa

Question 2

The following image shows which test being performed in a neonate?

Accepted Answer

Guthrie test

Answer

Hypoglycemia screening test

Answer

Foot print test

Answer

Heel prick test

Question 3

All are true about the image shown except:

Accepted Answer

Alert baby

Answer

Term small for date

Answer

Large head with loss of subcutaneous fat

Answer

Hairy pinna

Question 4

What test is being performed on this neonate in the NICU?

Accepted Answer

Moro's reflex

Answer

Transcutaneous bilirubinometry

Answer

Apgar score

Answer

Capillary refill time

Question 5

The following appearance of a child can occur in which of the following situations:

Accepted Answer

Meconium aspiration syndrome

Answer

Infant of diabetic mother

Answer

Cold stress

Answer

Hyaline membrane disease

Question 6

All are true about the swelling on scalp of a 2-day old neonate except: (Recent NEET Pattern 2016-17)

Accepted Answer

Heals from periphery

Answer

Can lead to prolongation of physiological Jaundice

Answer

Painless

Answer

Sub-periosteal bleeding with gradual hardening

Question 7

What investigations and management are indicated in the condition shown in the image?

Accepted Answer

Hematocrit and partial exchange transfusion with saline

Answer

Serum bilirubin and double volume exchange transfusion

Answer

Hematocrit and double volume exchange transfusion

Answer

Serum bilirubin and partial exchange transfusion with saline

Question 8

A 2-week-old neonate presents with feeding problems and otitis media. Based on the clinical image, what is the most likely diagnosis?

Accepted Answer

Pierre Robin sequence

Answer

Down syndrome

Answer

Beckwith-Wiedemann syndrome

Answer

Hypothyroidism

Question 9

A 2-day-old neonate under phototherapy unit. For exchange transfusion serum bilirubin-albumin ratio should be: (Recent NEET Pattern 2016-17)

Accepted Answer

$>3.5$

Answer

$<3.5$

Answer

$>35$

Answer

$<35$

Question 10

A newborn presents with macrosomia, plethoric appearance, and generalized edema. The image shows:

Accepted Answer

Infant of diabetic mother

Answer

Achondroplasia

Answer

Hemi-hypertrophy

Answer

Albright hereditary osteodystrophy

Neonatology — MCQs

Neonatology — MCQs

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