Neonatology Practice Questions

Q: Which of the following statements is true for physiological jaundice in neonate?

Starts on 2nd day of life. ***Starts on 2nd day of life*** - Physiological jaundice typically appears after the first 24 hours of life, usually peaking between the 3rd and 5th day and resolving within 1-2 weeks. - This delay is due to the newborn infant's immature liver enzymes (like **UGT**) needing time to adequately conjugate bilirubin. *Occurs in the first 6 hours of delivery* - Jaundice occurring within the first 24 hours of life is considered **pathological** and requires immediate investigation to rule out serious conditions like hemolytic disease of the newborn. - **Physiological jaundice** is a diagnosis of exclusion and does not manifest so early. *Can cause kernicterus* - **Physiological jaundice** is by definition a benign, self-limiting condition with bilirubin levels that do not reach neurotoxic thresholds. - **Kernicterus** (bilirubin encephalopathy) occurs only with severe unconjugated hyperbilirubinemia seen in **pathological conditions**, not true physiological jaundice. - The distinction between physiological and pathological jaundice is crucial for clinical management. *Best treated by phototherapy* - Most cases of **physiological jaundice** are mild and resolve spontaneously without intervention, only requiring monitoring. - **Phototherapy** is reserved for cases where bilirubin levels exceed specific thresholds, which are higher than what is typically seen in normal physiological jaundice.

Q: Which of the following is a typical hemoglobin level for term infants?

16 gm/dL. ***16 gm/dL*** - Term infants typically have **higher hemoglobin** levels at birth due to higher fetal erythropoiesis and late cord clamping. - The **normal range** for term neonates at birth is **14-20 gm/dL**, with an **average/typical value of 16-17 gm/dL**. - A hemoglobin level of **16 gm/dL** represents the **most typical** value for a healthy full-term neonate in the first few days of life. *8 gm/dL* - A hemoglobin level of **8 gm/dL** is significantly below the normal range for a term infant and would indicate **severe anemia**, requiring investigation and treatment. - This level would likely be associated with clinical signs of anemia such as **pallor**, **lethargy**, and **tachycardia**. *12 gm/dL* - While 12 gm/dL is a normal hemoglobin level for an older child or adult, it is **lower than expected** for a healthy term neonate. - A value of **12 gm/dL** might suggest mild anemia in a newborn or could be considered at the lower end of the normal range, perhaps seen a few weeks post-birth as physiological anemia develops. *18 gm/dL* - A hemoglobin level of **18 gm/dL** is within the **upper end of the normal range** for a term infant at birth, but is **higher than the typical average** of 16-17 gm/dL. - While not abnormal, it is less representative of the "typical" neonate compared to 16 gm/dL. - Levels significantly higher than this (e.g., above 20-22 gm/dL) could suggest **polycythemia**, which can lead to hyperviscosity syndrome.

Q: What is the capacity of stomach at birth?

50 ml. ***50 ml*** - The **stomach capacity** of a full-term newborn baby is approximately **50 ml**. - This small capacity is why newborns feed frequently, as their stomachs can only hold a limited amount of milk at each feeding. *5 ml* - A capacity of 5 ml is far too small for a newborn baby and would not allow for adequate feeding and nutrition. - This volume is closer to what might be seen in very premature infants or for medication dosages, not total stomach capacity. *25 ml* - While 25 ml is a small volume, it is still significantly less than the typical **stomach capacity** of a healthy, full-term newborn. - A stomach of this size would necessitate even more frequent feedings than usually observed. *100 ml* - A stomach capacity of 100 ml at birth is too large for a typical newborn. - This volume is more characteristic of an infant several weeks to a few months old, as the stomach expands rapidly during the first few weeks of life.

Q: What is the IV dose per kg of 1:10000 concentration of epinephrine in a pre-term baby in milliliters (ml)?

0.1 ml. ***0.1 ml*** - The recommended **IV dose of epinephrine** for a preterm baby in a 1:10,000 concentration is **0.01 mg/kg**. - Since 1:10,000 solution contains 0.1 mg/ml, the volume administered would be **0.1 mL/kg** (0.01 mg/kg divided by 0.1 mg/mL). *0.2 ml* - This dose would be twice the recommended starting dose, increasing the risk of **epinephrine side effects** such as **tachycardia** or **arrhythmias**. - **Overdosing** with epinephrine can lead to significant **cardiovascular complications**, which are particularly dangerous in fragile preterm infants. *0.3 ml* - This volume is three times the standard **epinephrine dose**, significantly increasing the likelihood of toxicity. - Delivering such a high dose could cause severe adverse effects including **hypertension**, **myocardial ischemia**, or **intracranial hemorrhage** in a preterm infant. *0.4 ml* - This dose is four times higher than what is typically recommended, posing a considerable threat to the infant's health. - Administering this much epinephrine would significantly elevate the risk of **life-threatening arrhythmias** and **cardiovascular collapse**.

Q: Post term baby with tachypnea - commonest cause?

Meconium aspiration syndrome. ***Meconium aspiration syndrome*** - Post-term infants are at increased risk of **meconium staining of amniotic fluid** and subsequent **meconium aspiration**, leading to respiratory distress. - Meconium in the lungs causes **airway obstruction**, chemical pneumonitis, and surfactant inactivation, resulting in tachypnea and hypoxemia. *Transient tachypnea of newborn* - This condition is more common in **term or late preterm infants delivered by C-section**, rather than post-term. - It is caused by **delayed reabsorption of fetal lung fluid**, leading to mild respiratory distress that typically resolves within 24-48 hours. *Hyaline membrane disease* - Also known as **respiratory distress syndrome**, this condition primarily affects **preterm infants** due to **surfactant deficiency**. - It would be highly unusual in a post-term infant, as surfactant production is mature by term or post-term. *Infection* - While infection (e.g., **neonatal sepsis**, pneumonia) can cause tachypnea in any newborn, it is **not the commonest cause of respiratory distress specifically in a post-term baby** with tachypnea. - Infection would typically be accompanied by other signs like fever/hypothermia, poor feeding, lethargy, or signs of systemic illness.

Q: Which of the following statements about Kangaroo Mother Care is false?

It is only applicable to mothers.. ***It is only applicable to mothers.*** - This statement is false because **Kangaroo Mother Care (KMC)** involves skin-to-skin contact, which can be provided by any adult caregiver, including the **father** or other family members, not exclusively the mother. - The benefits of KMC, such as **thermal regulation**, improved **bonding**, and **breastfeeding promotion**, are achieved regardless of whether the mother or another caregiver provides the contact. *Can also be provided by the father.* - This statement is true; **fathers** are increasingly recognized as important caregivers in providing **KMC**, offering similar benefits as when provided by the mother. - Involving fathers can enhance **parental bonding** and share the caregiving responsibilities for the infant, especially for **low birth weight** or **premature infants**. *It is especially beneficial for low birth weight infants.* - This statement is true; **KMC** is particularly recommended for **low birth weight (LBW)** infants, especially those weighing under 2500 grams, as it has been shown to reduce mortality and improve their health outcomes. - It helps stabilize **cardiorespiratory function**, promotes **weight gain**, and facilitates **exclusive breastfeeding** in these vulnerable infants. *It provides effective thermal control.* - This statement is true; **KMC** involves direct **skin-to-skin contact**, which helps regulate the infant's body temperature, preventing both **hypothermia** and **hyperthermia** more effectively than conventional incubators in some settings. - The caregiver's body acts as a **human incubator**, providing a stable and appropriate thermal environment for the infant.

Q: Which drug is primarily used in neonatal resuscitation?

Adrenaline. ***Adrenaline*** - **Adrenaline (epinephrine)** is the primary drug used in neonatal resuscitation when **bradycardia** (heart rate <60 bpm) persists despite adequate ventilation and chest compressions. - It acts as a **vasopressor** and **cardiac stimulant**, increasing heart rate and contractility. - Administered intravenously or via endotracheal tube at a dose of **0.01-0.03 mg/kg**. *Sodium bicarbonate* - **Sodium bicarbonate** is rarely used in neonatal resuscitation due to concerns about potential side effects like **intracranial hemorrhage** and paradoxical intracellular acidosis. - Its use is generally reserved for prolonged resuscitation with documented **metabolic acidosis**. - Not recommended for routine use in the delivery room. *Naloxone* - **Naloxone** is an opioid antagonist used to reverse severe **respiratory depression** caused by maternal opioid administration shortly before delivery. - It is not indicated for primary resuscitation efforts in the absence of opioid exposure, and ventilation remains the priority. - Current NRP guidelines emphasize **ventilation over naloxone** administration. *Atropine* - **Atropine** is no longer recommended in neonatal resuscitation protocols. - It was previously considered for bradycardia but has been removed from **NRP guidelines** due to lack of evidence for efficacy. - **Adrenaline** has replaced atropine as the drug of choice for persistent bradycardia.

Q: The most common bone fractured during birth is

Clavicle. ***Clavicle*** - The **clavicle** is the most common bone fractured during birth due to the stresses applied during delivery, especially in cases of shoulder dystocia. - Its relatively superficial location and slender shaft make it vulnerable to fracture as it may get compressed or stretched against the maternal pelvis. *Scapula* - Fractures of the **scapula** are extremely rare in newborns due to its protected position and broad, flat structure. - It would require a significant, unusual force to fracture the scapula during birth. *Radius* - While long bone fractures can occur, a **radial fracture** is less common than a clavicle fracture during birth. - Fractures of the radius typically occur from direct trauma or hyperextension injuries, rather than the compressive forces seen during normal birth. *Humerus* - Fractures of the **humerus** are less common than clavicle fractures but can occur, particularly in difficult deliveries or when excessive force is applied during extraction. - However, the clavicle remains the most frequently fractured bone overall in neonates during birth.

Q: Meconium can be passed up to how many days in a healthy baby?

2. ***2*** - Most healthy term infants pass **meconium** within the first 24 hours of life (90-95%). - Passage of meconium up to **48 hours (2 days)** can still occur in healthy term infants. - **Failure to pass meconium by 48 hours** warrants investigation for potential underlying conditions such as **Hirschsprung disease**, meconium plug syndrome, or intestinal obstruction. - This is the accepted standard in pediatric practice for initiating evaluation. *3* - Waiting **72 hours (3 days)** before investigating delayed meconium passage is not recommended. - By 3 days, the delay is considered **abnormal** and should have already prompted medical evaluation. - Most guidelines recommend investigation by **48 hours**, not 72 hours. *5* - A delay in meconium passage for **5 days** represents a significant abnormality requiring urgent evaluation. - Such delays are typically associated with conditions like **Hirschsprung disease**, intestinal atresia, or other causes of obstruction. - This duration would never be considered normal in a healthy baby. *7* - A delay of **7 days** would be a severe abnormality indicating serious underlying pathology. - This would require urgent medical and likely surgical intervention. - Complete failure to pass meconium for this duration strongly suggests **intestinal obstruction or severe motility disorder**.

Question 1

Which of the following statements is true for physiological jaundice in neonate?

Accepted Answer

Starts on 2nd day of life

Answer

Occurs in the first 6 hours of delivery

Answer

Best treated by phototherapy

Answer

Can cause kernicterus

Question 2

Which of the following is a typical hemoglobin level for term infants?

Accepted Answer

16 gm/dL

Answer

8 gm/dL

Answer

12 gm/dL

Answer

18 gm/dL

Question 3

What is the capacity of stomach at birth?

Accepted Answer

50 ml

Answer

5 ml

Answer

25 ml

Answer

100 ml

Question 4

What is the IV dose per kg of 1:10000 concentration of epinephrine in a pre-term baby in milliliters (ml)?

Accepted Answer

0.1 ml

Answer

0.3 ml

Answer

0.4 ml

Answer

0.2 ml

Question 5

Post term baby with tachypnea - commonest cause?

Accepted Answer

Meconium aspiration syndrome

Answer

Transient tachypnea of newborn

Answer

Hyaline membrane disease

Answer

Infection

Question 6

A newborn with blood group O positive, whose mother is Rh negative, has a cord bilirubin level of 7 mg/dl. What is the appropriate treatment?

Accepted Answer

Check Direct Coomb's Test (DCT)

Answer

Monitor bilirubin levels

Answer

Prepare for exchange transfusion

Answer

Start phototherapy

Question 7

Which of the following statements about Kangaroo Mother Care is false?

Accepted Answer

It is only applicable to mothers.

Answer

Can also be provided by the father.

Answer

It is especially beneficial for low birth weight infants.

Answer

It provides effective thermal control.

Question 8

Which drug is primarily used in neonatal resuscitation?

Accepted Answer

Adrenaline

Answer

Sodium bicarbonate

Answer

Naloxone

Answer

Atropine

Question 9

The most common bone fractured during birth is

Accepted Answer

Clavicle

Answer

Scapula

Answer

Radius

Answer

Humerus

Question 10

Meconium can be passed up to how many days in a healthy baby?

Accepted Answer

2

Answer

3

Answer

5

Answer

7

Neonatology — MCQs

Neonatology — MCQs

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