Neonatology Practice Questions

Q: 4 day old breastfed neonate, otherwise well, term neonate presented with jaundice, on testing the bilirubin level was found to be 18 mg/dl. Which of the following is the best step of management?

Start phototherapy and continue breast feeding. ***Start phototherapy and continue breast feeding*** - For a 4-day-old, otherwise healthy, term neonate with a bilirubin level of 18 mg/dL, **phototherapy** is the recommended initial treatment to lower bilirubin levels and prevent **kernicterus**. - **Breastfeeding should be continued** as it is crucial for hydration and nutrition, and interruption is generally not needed unless the bilirubin levels are extremely high and unresponsive to phototherapy. *Stop breast feeding and do phototherapy* - **Stopping breastfeeding is usually not necessary** for a bilirubin level of 18 mg/dL in a healthy, term neonate, as the benefits of breast milk outweigh the risks associated with this level of jaundice. - While **phototherapy** is appropriate, discontinuing breastfeeding can lead to complications such as dehydration and decreased milk supply. *Initiate exchange transfusion* - **Exchange transfusion** is typically reserved for much higher bilirubin levels (e.g., >25 mg/dL in a term neonate) or when there are signs of **acute bilirubin encephalopathy**, which are not present here. - It is an invasive procedure with potential risks, making it unsuitable as a first-line treatment for this bilirubin level. *Start iv fluids and given phototherapy* - **Intravenous fluids** are generally not indicated for an otherwise well, breastfed neonate unless there are signs of significant dehydration, which is not mentioned in this scenario. - While **phototherapy** is appropriate, routine IV fluid administration can lead to **fluid overload** and is not standard practice in uncomplicated neonatal jaundice.

Q: Neonatal tetanus most commonly presents with:

Poor feeding. ***Poor feeding*** - The initial signs of neonatal tetanus include **irritability**, **poor sucking**, and **difficulty feeding**, usually appearing between 3 and 14 days of life. - This symptom is due to the toxin affecting cranial nerves and early muscle spasms, making it difficult for the infant to open their mouth or swallow. *Seizures* - While seizures can occur in severe neonatal tetanus, they are typically a **later manifestation** after initial symptoms like poor feeding and muscle rigidity. - **Generalized muscle spasms** and opisthotonus usually precede frank seizures. *Respiratory failure* - **Respiratory failure** is a serious complication of neonatal tetanus, often leading to death, but it results from severe, sustained muscle spasms of the respiratory muscles. - It usually occurs **after the initial signs** of poor feeding and generalized rigidity have developed. *Fever* - **Fever** is not a primary or most common initial symptom of neonatal tetanus, though a low-grade fever may be present in some cases. - The disease is primarily characterized by neurological symptoms due to the action of **tetanospasmin**, not direct pyrogenic effects.

Q: A sick intubated neonate is having bilateral jerk of both right and left upper limbs with some occasional twitching of neck as well. Likely type of seizures:

Multifocal clonic. ***Multifocal clonic*** - This description fits **multifocal clonic seizures**, characterized by **migratory clonic activity** observed in different body parts at varying times, sometimes simultaneously. - The **bilateral jerk** of upper limbs and occasional neck twitching point to this pattern, as the involvement is not uniform or generalized, but rather appears in multiple, distinct locations. *Multifocal tonic clonic* - This option incorrectly combines multifocal activity with a **tonic component**, which is described as stiffening or sustained contraction, not just jerking. - While activity may be multifocal, the specific description of "jerk" primarily suggests a **clonic nature**, without a clear tonic phase. *Focal tonic* - **Focal tonic seizures** involve sustained **stiffening or contraction** of muscles in a specific, localized area of the body, which is not described. - The term "jerk" indicates a **clonic movement**, and the involvement of multiple areas (bilateral upper limbs, neck) rules out a single focal onset. *Focal clonic* - **Focal clonic seizures** are characterized by rhythmic jerking movements limited to a **single, localized part** of the body without spreading to other areas. - The presence of jerking in **both upper limbs** and occasional neck twitching indicates activity in multiple sites, not restricted to a single focal area.

Q: According to neonatal resuscitation protocol, how much oxygen to give in a term neonate with apnea and bradycardia initially?

21%. ***21%*** - According to **NRP (Neonatal Resuscitation Program) 2020 guidelines**, for **term neonates (≥35 weeks gestation)** requiring resuscitation, the initial recommendation is to use **room air (21% oxygen)** to minimize the risk of hyperoxia and oxidative injury. - Multiple randomized controlled trials have demonstrated that room air is as effective as 100% oxygen for initial resuscitation. - Supplemental oxygen is only added if **oxygen saturation targets** are not met despite adequate ventilation, and should be titrated using **pulse oximetry**. *30%* - This concentration is **higher than room air** and is not the initial recommendation for term neonates needing resuscitation. - Starting with a higher oxygen concentration can lead to **oxidative stress** without immediate benefit. - Higher initial concentrations (21-30%) are reserved for **preterm neonates (<35 weeks)**. *100%* - Administering **100% oxygen** can be harmful to a neonate, potentially causing **oxidative injury** to developing organs, including the lungs, brain, and retina. - This was the old practice but has been **discontinued** based on evidence showing increased mortality and morbidity. - High concentrations are no longer recommended even in severe cases; oxygen should be titrated to saturation targets. *50%* - While lower than 100%, 50% oxygen is still **not the initial recommended concentration** for term neonates in resuscitation protocols. - The goal is to start with **21% oxygen** and gradually increase based on **pulse oximetry monitoring** and target saturation ranges if 21% is insufficient.

Q: Which of the following is the most common cause of early-onset neonatal sepsis?

Group B Streptococcus. ***Group B Streptococcus*** - **Group B Streptococcus (GBS)**, or *Streptococcus agalactiae*, is the **most common bacterial cause of early-onset neonatal sepsis** (within the first 7 days of life) in many populations. - Transmission typically occurs vertically from the mother's vaginal flora during birth. - **Intrapartum antibiotic prophylaxis** in GBS-positive mothers has significantly reduced incidence in developed countries. *Escherichia coli* - **E. coli** is the **second most common cause of early-onset sepsis** and the **leading cause in preterm and very low birth weight infants**. - Can be transmitted from the maternal genital tract during delivery. - Associated with higher mortality rates than GBS, particularly in preterm neonates. *Listeria monocytogenes* - While *Listeria monocytogenes* can cause **neonatal sepsis and meningitis**, it is far less common than GBS or E. coli. - Associated with maternofetal transmission from **foodborne infection** in the mother. - Can cause early or late-onset disease. *Klebsiella pneumoniae* - *Klebsiella pneumoniae* is more commonly associated with **late-onset neonatal sepsis**, particularly in **premature or critically ill neonates** in NICU settings. - Often associated with **hospital-acquired infections** and invasive procedures. - In some regions, particularly in developing countries, it can also cause early-onset disease.

Q: Which of the following is a common cause of late-onset jaundice in newborns?

Breast milk jaundice. ***Breast milk jaundice*** - This condition typically presents with **unconjugated hyperbilirubinemia** after the first 5-7 days of life, peaking at 2-3 weeks and potentially lasting for several weeks to months. - It is thought to be related to substances in breast milk (such as beta-glucuronidase and pregnane-3α,20β-diol) that **enhance enterohepatic circulation of bilirubin** and may inhibit hepatic conjugation of bilirubin. - This is a **late-onset jaundice** and a diagnosis of exclusion after ruling out pathological causes. *Hemolytic disease of the newborn* - This is an **early-onset jaundice**, usually appearing within the first 24 hours of life due to rapid breakdown of red blood cells. - It is typically caused by **ABO or Rh incompatibility** between mother and fetus, leading to significant and often severe hyperbilirubinemia. - Not a cause of late-onset jaundice. *Gilbert syndrome* - While it causes **unconjugated hyperbilirubinemia**, it is an inherited disorder that usually presents later in life, often in adolescence or adulthood, particularly during periods of stress or fasting. - It results from a mild deficiency in UDP-glucuronyltransferase (UGT1A1) activity, not typically a cause of jaundice in the newborn period. *Physiologic jaundice* - This is a very common and normal type of jaundice that appears after 24 hours of life, peaks on days 3-5, and typically resolves within 7-10 days in full-term infants. - It is due to the newborn's immature liver and increased red blood cell turnover, but it is **not late-onset** as it appears and resolves within the first week.

Q: A neonate develops a respiratory infection shortly after birth, and the nasopharyngeal swab is positive for Respiratory Syncytial Virus (RSV) antigen. Which treatment is the most appropriate?

Supportive care. ***Supportive care*** - For most infants and neonates with RSV infection, **supportive care** is the mainstay of treatment, including **oxygen therapy**, nasal suctioning, and hydration. - **Ribavirin** (the only antiviral with activity against RSV) is rarely used due to limited efficacy, high cost, and potential toxicity; it may be considered only in **severe cases in immunocompromised patients**. - **Palivizumab** is a monoclonal antibody used for **prophylaxis** in high-risk infants, not for treatment of active infection. *Oseltamivir* - **Oseltamivir** is an antiviral drug primarily used for the treatment and prophylaxis of **influenza A and B viruses**. - It is **not effective** against **Respiratory Syncytial Virus (RSV)**. *Amantadine* - **Amantadine** is an antiviral medicine specifically used to treat and prevent **influenza A virus infections**. - It has **no antiviral activity** against **RSV** or other respiratory viruses. *Acyclovir* - **Acyclovir** is an antiviral drug indicated for the treatment of infections caused by **herpes simplex virus (HSV)** and **varicella-zoster virus (VZV)**. - It has **no role** in the management of **RSV infection**.

Q: What is the appropriate management protocol for a neonate who has meconium aspiration and does not initiate breathing after initial resuscitation steps including drying, stimulation, and repositioning?

Continue resuscitation with bag and mask ventilation. ***Continue resuscitation with bag and mask ventilation*** - For a neonate with **meconium aspiration** who does not initiate breathing after initial attempts, the priority is to establish effective **ventilation** using a bag and mask. - This ensures adequate **oxygenation and ventilation** until the neonate can breathe independently or further interventions are necessary. *Immediate endotracheal intubation and suctioning* - **Routine intubation and tracheal suctioning** for non-vigorous neonates with meconium-stained amniotic fluid are **no longer recommended** by current guidelines. - Initial steps should focus on providing **positive pressure ventilation (PPV)** for infants who are not breathing or are gasping. *Administer surfactant therapy* - **Surfactant therapy** is used to treat **respiratory distress syndrome** or severe meconium aspiration syndrome once ventilation is established. - It is not an initial step for a neonate who has **not initiated breathing** and requires immediate resuscitation. *Start chest compressions immediately* - **Chest compressions** are indicated only if the **heart rate remains below 60 BPM**, despite adequate ventilation with 100% oxygen for **at least 30 seconds**. - Initiating compressions before confirming adequate ventilation and heart rate assessment is **premature and inappropriate**.

Q: An infant born at 35 weeks of gestation develops grunting, nasal flaring, and cyanosis shortly after birth. What is the most likely diagnosis?

Respiratory distress syndrome. ***Respiratory distress syndrome*** - This condition is characterized by **respiratory distress** (grunting, nasal flaring, cyanosis) shortly after birth in a **premature infant** (35 weeks gestation) due to pulmonary **surfactant deficiency**. - **Surfactant deficiency** leads to alveolar collapse, decreased lung compliance, and impaired gas exchange. *Neonatal pneumonia* - While pneumonia can cause similar respiratory symptoms, it is less likely to appear **immediately after birth** in a premature infant without other signs of infection (e.g., fever, sepsis). - Diagnosis typically requires evidence of infection, such as abnormal chest X-ray findings with **infiltrates** and **leukocytosis**. *Transient tachypnea of the newborn* - This condition usually presents with **tachypnea** and mild respiratory distress, but it is typically **self-limiting** and resolves within 24-48 hours. - It is more common in **term or late preterm infants** delivered by C-section and is due to delayed clearance of fetal lung fluid, not surfactant deficiency. *Congenital heart disease* - While congenital heart disease can cause cyanosis and respiratory distress, the onset is often not **immediately after birth** and would typically be accompanied by other signs like heart murmurs or abnormal peripheral pulses. - The primary respiratory findings (grunting, nasal flaring) are more indicative of a **pulmonary issue** rather than a cardiac one, though severe cardiac issues can present this way.

Q: A newborn presents with hydrocephalus and intracranial calcifications. The mother has a history of consuming raw meat during pregnancy. What is the most likely diagnosis?

Toxoplasmosis. ***Correct: Toxoplasmosis*** - The classic triad of congenital toxoplasmosis includes **hydrocephalus**, intracranial calcifications, and chorioretinitis (though chorioretinitis is not mentioned here, the first two are highly suggestive). - Consuming **raw meat** or contact with cat feces are common routes of transmission for *Toxoplasma gondii*. - Intracranial calcifications in toxoplasmosis are typically **diffuse and scattered** throughout the brain parenchyma. *Incorrect: Cytomegalovirus infection* - While CMV can cause **intracranial calcifications**, they are typically **periventricular** (not diffuse), which helps differentiate from toxoplasmosis. - Hydrocephalus is less common than in toxoplasmosis. - Hearing loss and **microcephaly** (not hydrocephalus) are more frequently associated with congenital CMV. *Incorrect: Rubella* - Congenital rubella syndrome is characterized by sensorineural **deafness**, **cataracts**, and congenital **heart defects** (e.g., patent ductus arteriosus), not hydrocephalus or intracranial calcifications. - **Blueberry muffin rash** is also a characteristic skin manifestation. *Incorrect: Syphilis* - Congenital syphilis can present with **bone abnormalities** (e.g., metaphysitis), hepatosplenomegaly, and skin rashes. - Neurosyphilis can occur but typically involves **meningitis** or hydrocephalus secondary to inflammation, not primarily due to calcifications, and often presents later.

Question 1

4 day old breastfed neonate, otherwise well, term neonate presented with jaundice, on testing the bilirubin level was found to be 18 mg/dl. Which of the following is the best step of management?

Accepted Answer

Start phototherapy and continue breast feeding

Answer

Stop breast feeding and do phototherapy

Answer

Initiate exchange transfusion

Answer

Start iv fluids and give phototherapy

Question 2

Neonatal tetanus most commonly presents with:

Accepted Answer

Poor feeding

Answer

Seizures

Answer

Respiratory failure

Answer

Fever

Question 3

A sick intubated neonate is having bilateral jerk of both right and left upper limbs with some occasional twitching of neck as well. Likely type of seizures:

Accepted Answer

Multifocal clonic

Answer

Multifocal tonic clonic

Answer

Focal tonic

Answer

Focal clonic

Question 4

According to neonatal resuscitation protocol, how much oxygen to give in a term neonate with apnea and bradycardia initially?

Accepted Answer

21%

Answer

100%

Answer

50%

Answer

30%

Question 5

Which of the following is the most common cause of early-onset neonatal sepsis?

Accepted Answer

Group B Streptococcus

Answer

Listeria monocytogenes

Answer

Klebsiella pneumoniae

Answer

Escherichia coli

Question 6

Which of the following is a common cause of late-onset jaundice in newborns?

Accepted Answer

Breast milk jaundice

Answer

Hemolytic disease of the newborn

Answer

Gilbert syndrome

Answer

Physiologic jaundice

Question 7

A neonate develops a respiratory infection shortly after birth, and the nasopharyngeal swab is positive for Respiratory Syncytial Virus (RSV) antigen. Which treatment is the most appropriate?

Accepted Answer

Supportive care

Answer

Oseltamivir

Answer

Amantadine

Answer

Acyclovir

Question 8

What is the appropriate management protocol for a neonate who has meconium aspiration and does not initiate breathing after initial resuscitation steps including drying, stimulation, and repositioning?

Accepted Answer

Continue resuscitation with bag and mask ventilation

Answer

Immediate endotracheal intubation and suctioning

Answer

Administer surfactant therapy

Answer

Start chest compressions immediately

Question 9

An infant born at 35 weeks of gestation develops grunting, nasal flaring, and cyanosis shortly after birth. What is the most likely diagnosis?

Accepted Answer

Respiratory distress syndrome

Answer

Neonatal pneumonia

Answer

Transient tachypnea of the newborn

Answer

Congenital heart disease

Question 10

A newborn presents with hydrocephalus and intracranial calcifications. The mother has a history of consuming raw meat during pregnancy. What is the most likely diagnosis?

Accepted Answer

Toxoplasmosis

Answer

Cytomegalovirus infection

Answer

Rubella

Answer

Syphilis

Neonatology — MCQs

Neonatology — MCQs

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