Neonatology Practice Questions

Q: All are true about congenital Toxoplasmosis EXCEPT which of the following?

Conjunctivitis. ***Conjunctivitis*** - **Conjunctivitis** is inflammation of the conjunctiva and is not a hallmark symptom of congenital toxoplasmosis. - While it can occur in an infant due to other causes, it is not specifically caused by *Toxoplasma gondii* infection. *Chorioretinitis* - **Chorioretinitis** is a classic ocular manifestation of congenital toxoplasmosis, leading to inflammation and scarring of the retina and choroid. - It can cause significant visual impairment and is a key component of the **classic triad** of symptoms. *Hydrocephalus* - **Hydrocephalus**, an abnormal accumulation of cerebrospinal fluid, is a severe neurological complication of congenital toxoplasmosis. - It results from obstruction of CSF flow due to inflammation or damage caused by the parasite in the brain. *Cerebral calcification* - **Cerebral calcifications** are highly suggestive of congenital toxoplasmosis, representing areas of brain tissue damage and healing where the parasite has been active. - These are typically visible on brain imaging and are a key diagnostic indicator.

Q: Which of the following is a classic triad of congenital rubella syndrome?

Patent ductus arteriosus, cataracts, and deafness. ***Patent ductus arteriosus, cataracts, and deafness*** - This is the **classic triad** of congenital rubella syndrome, reflecting the damage caused by the rubella virus to the developing fetus's **heart, eyes, and ears**. - **Patent ductus arteriosus** is a common cardiac defect, **cataracts** affect vision, and **sensorineural deafness** is a prevalent auditory defect. *Hepatosplenomegaly, intellectual disability, and deafness* - While **deafness** is part of the rubella triad, **hepatosplenomegaly** and **intellectual disability** are more common features of other congenital infections like **cytomegalovirus (CMV)**, not the classic rubella triad. - **Intellectual disability** can occur with severe rubella, but it's not considered a core component of the classic diagnostic triad. *Chorioretinitis, multiorgan failure, and pneumonitis* - **Chorioretinitis** is a hallmark of congenital toxoplasmosis and CMV infection, not typically seen with congenital rubella. - **Multiorgan failure** and **pneumonitis** are severe, non-specific complications that can occur with various congenital infections but are not part of rubella's classic presentation. *None of the options* - This option is incorrect as the first option accurately describes the **classic triad of congenital rubella syndrome**.

Q: Which of the following methods is not recommended for resuscitating a newborn baby with a heart rate less than 60 beats per minute?

slapping the back. ***Slapping the back*** - This method is **contraindicated** and **harmful** for newborn resuscitation as it can cause trauma and does not effectively improve heart rate or ventilation. - Previous practices involving forceful stimulation are now recognized as unsafe and ineffective, with current guidelines emphasizing gentle stimulation or medical interventions. *Chest compression* - **Chest compressions** are indicated when a newborn's heart rate remains below **60 beats per minute** despite adequate ventilation with positive pressure ventilation (PPV). - This intervention helps to circulate oxygenated blood to vital organs and is a critical component of neonatal resuscitation for severe bradycardia. *Oxygen therapy* - **Oxygen therapy** with positive pressure ventilation (PPV) is the **first-line intervention** for newborns with heart rate below 60 bpm after initial steps. - It helps to improve oxygen saturation, support ventilation, and may improve heart rate before chest compressions are needed. *Tactile stimulation* - **Tactile stimulation**, such as gently rubbing the back or flicking the soles of the feet, is an initial step in newborn resuscitation for mild respiratory depression. - However, for a heart rate **below 60 bpm** (as in this question's scenario), tactile stimulation alone is **insufficient** and **not appropriate** - immediate positive pressure ventilation and chest compressions are required instead. - Tactile stimulation is only useful during initial assessment and for mild depression, not for established bradycardia requiring advanced resuscitation.

Q: Erythematous blotchy rash is seen on the abdomen, trunk, and face of a 3-day-old child along with yellowish papules. The child appears well. What is the appropriate management?

No treatment. ***No treatment (Correct Answer)*** The described symptoms—erythematous blotchy rash with yellowish papules on the abdomen, trunk, and face in a well-appearing 3-day-old neonate—are **classic for erythema toxicum neonatorum**. **Key Features:** - **Benign, self-limiting rash** of unknown etiology - Affects **50-70% of term newborns** - Typically appears on **days 2-5** of life - Characterized by **erythematous macules/patches** with overlying **yellowish-white papules/pustules** - Infant appears **well and thriving** - **Resolves spontaneously** within 1-2 weeks without treatment - Histology shows **eosinophils** in pustules **Management:** Reassurance to parents; no medical intervention required. --- *Topical steroid and antibiotic lotion (Incorrect)* This approach is inappropriate because erythema toxicum neonatorum is: - **Not an infection** (no bacterial or fungal cause) - **Not an inflammatory condition** requiring steroids - Misdiagnosis and overtreatment could lead to unnecessary side effects, antibiotic resistance, and mask other conditions --- *Topical steroid cream (Incorrect)* Topical steroids are: - **Unnecessary** for this benign, self-resolving condition - **Potentially harmful** in neonates (can cause skin atrophy, increased absorption) - Provide **no therapeutic benefit** for erythema toxicum neonatorum --- *Intravenous antibiotics (Incorrect)* Systemic antibiotics are: - **Entirely unwarranted** as this is a non-infectious, benign rash - Would represent **gross overtreatment** with significant risks - Contribute to **antibiotic resistance** - Carry risks of adverse reactions, disruption of normal flora, and unnecessary hospitalization **Differentials to consider (but not present here):** - Transient neonatal pustular melanosis (present at birth) - Neonatal acne (appears later, at 2-4 weeks) - Miliaria (smaller, clear vesicles) - Infectious causes (infant appears ill, requires septic workup)

Q: Which of the following statements about cephalhematoma is correct?

It is hemorrhage between the skull and periosteum. ***It is hemorrhage between the skull and periosteum*** - A **cephalhematoma** is defined as a collection of blood between the **periosteum** and the underlying **skull bone** (subperiosteal). - Its boundaries are limited by the suture lines because the periosteum is firmly attached at these junctions, preventing blood from crossing. *It is hemorrhage within the subcutaneous tissue around the skull* - This description corresponds to a **caput succedaneum**, which involves **edema and hemorrhage** in the subcutaneous tissue, rather than between the skull and periosteum. - Unlike a cephalhematoma, a **caput succedaneum** can cross suture lines and is typically present at birth. *It is type of subdural hemorrhage* - A **subdural hemorrhage** involves bleeding between the **dura mater** and the **arachnoid mater** within the cranial vault. - This type of hemorrhage is a **neurological emergency** and is distinct from a cephalhematoma, which is an external scalp injury. *It is subperiosteal bleeding in the skull* - While this statement is technically correct (subperiosteal means under the periosteum), the **standard definition** specifically states "between the periosteum and the skull bone." - The distinction is important: **subperiosteal** could theoretically include bleeding within the periosteum itself, whereas the precise location is in the **potential space** between periosteum and bone. - Option A is more precise and is the preferred medical definition.

Q: Further investigation is essential in a newborn with which of the following conditions?

Lens opacity. ***Lens opacity*** - A **lens opacity** in a newborn suggests congenital **cataracts**, which can lead to permanent vision impairment if not identified and treated early. - **Investigation is essential** to identify underlying causes such as **TORCH infections** (Toxoplasmosis, Rubella, CMV, HSV), **metabolic disorders** (galactosemia, Lowe syndrome), **genetic syndromes**, or **chromosomal abnormalities**. - Early detection and management are crucial to prevent **amblyopia** (lazy eye) and optimize visual development during the **critical period** of visual maturation. - Investigations include: TORCH titers, urine for reducing substances, metabolic screening, and genetic evaluation. *Erythema toxicum* - This is a common, **benign newborn rash** characterized by blotchy red macules and papules with central vesicles or pustules. - It typically resolves spontaneously within days to a few weeks and requires **no specific investigation or treatment**. *Vaginal bleed* - A small amount of **vaginal bleeding** in female newborns is usually due to the temporary withdrawal of maternal hormones (e.g., estrogen) after birth. - This is a **physiologic response** and generally self-resolves, requiring no further investigation unless excessive or prolonged. *Subconjunctival hemorrhage* - This occurs due to the rupture of tiny blood vessels in the eye during the birthing process, often associated with **vaginal delivery**. - It is a **benign condition** that resolves on its own within a couple of weeks and does not affect vision.

Q: Most common site for bone marrow aspiration in neonates is -

Anteromedial tibia. ***Anteromedial tibia*** - The **anteromedial tibia** is the preferred site in neonates due to its relatively **large marrow cavity**, superficial location, and reduced risk of vital organ injury. - This site is easily accessible and provides a good yield of marrow cells, making it suitable for diagnostic purposes in newborns. *Anterior superior iliac crest* - While a common site for bone marrow aspiration in older children and adults, the **anterior superior iliac crest** can be more challenging and poses a greater risk in neonates due to their smaller bone structures. - The iliac crest offers less bony prominence and a thinner cortex in neonates, increasing the difficulty of the procedure and potential for sampling error. *Posterior superior iliac crest* - The **posterior superior iliac crest** is another common site in older children and adults but is generally avoided in neonates due to the difficulty in positioning and the risk of damaging vital structures in the vicinity. - It requires prone positioning and offers less superficial bone, making it a less practical and safe choice for neonates compared to the tibia. *Sternum* - **Sternal aspiration** is generally contraindicated in neonates and young children due to the thinness of the sternal bone and proximity to vital structures like the heart and great vessels. - There is a high risk of **perforation** of the sternum and injury to underlying organs, making this site unsafe for bone marrow aspiration in this age group.

Q: Which of the following drugs is most commonly used for cardiovascular support in post-resuscitation care of neonates?

Dopamine. ***Dopamine*** - **Dopamine** is often the first-line vasopressor used in neonates for **hypotension** unresponsive to fluid resuscitation, especially in the context of post-resuscitation care, due to its dose-dependent effects on cardiac output and systemic vascular resistance. - It increases **cardiac contractility** and **heart rate** at moderate doses (beta-1 adrenergic effects) and can improve renal blood flow at lower doses. *Sodium Bicarbonate* - **Sodium bicarbonate** is used to correct severe metabolic acidosis but is generally not recommended in the initial stages of neonatal resuscitation or for routine cardiovascular support due to potential adverse effects like rebound acidosis and hypernatremia. - Its use is typically reserved for documented severe metabolic acidosis after adequate ventilation and circulation have been established. *Epinephrine* - **Epinephrine** is primarily used during active cardiorespiratory arrest for its potent vasoconstrictive and inotropic effects, and for sustained **bradycardia** unresponsive to ventilation and chest compressions. - While it has strong cardiovascular effects, it is not the most common drug for *post-resuscitation cardiovascular support* unless there is persistent shock or bradycardia despite dopamine. *Dobutamine* - **Dobutamine** is an inotropic agent primarily used to improve myocardial contractility and cardiac output with less chronotropic effect than dopamine, making it beneficial in conditions with low cardiac output and normal blood pressure. - It is less commonly used as an initial agent for post-resuscitation **hypotension** in neonates compared to dopamine, which also offers systemic vasoconstriction to raise blood pressure.

Q: A 45-day-old infant presents with seizures. Examination reveals he is icteric, has bulging fontanelles, and exhibits opisthotonic posture. Which of the following treatments is NOT indicated?

Chlorpromazine. ***Chlorpromazine*** - Chlorpromazine is an **antipsychotic medication** and is **contraindicated** in infants, especially in the presence of seizures and central nervous system (CNS) dysfunction, due to its potential to **lower the seizure threshold** and cause severe extrapyramidal symptoms. - Its mechanism of action via **dopamine receptor blockade** is not relevant for treating bilirubin encephalopathy or its symptoms. *Phototherapy* - Phototherapy is a primary treatment for **neonatal jaundice** to reduce unconjugated bilirubin levels and prevent neurotoxicity. - While the infant's condition suggests severe hyperbilirubinemia with complications, phototherapy would still be indicated as an initial step or adjunct to further interventions, especially if the bilirubin levels are still rising. *Exchange Transfusion* - Exchange transfusion is a **definitive treatment** for severe hyperbilirubinemia, especially when there are signs of **acute bilirubin encephalopathy (kernicterus)**, as suggested by seizures, bulging fontanelles, and opisthotonus. - It rapidly removes bilirubin from the blood and is crucial to prevent further neurological damage in such critical cases. *Phenobarbital* - Phenobarbital is an **anticonvulsant** used to manage seizures, which are a prominent symptom in this infant. - It can also help to **induce hepatic enzymes** involved in bilirubin metabolism, thereby potentially aiding in the reduction of bilirubin levels in cases of severe hyperbilirubinemia, though its primary role here would be seizure control.

Q: What is the most common cause of pneumonia in early onset sepsis in neonates?

Group B streptococcus. ***Group B streptococcus*** - **Group B Streptococcus (GBS)** is the leading cause of **early-onset sepsis** and pneumonia in neonates, typically acquired during passage through the birth canal. - Maternal GBS colonization is a significant risk factor, and GBS can cause **severe respiratory distress** in affected newborns. *H influenzae* - **_Haemophilus influenzae_** is a more common cause of **late-onset sepsis** or pneumonia in infants and children, rather than early-onset neonatal disease. - While it can cause neonatal infections, it is much less frequent than GBS in the early-onset period. *Coagulase positive staph aureus* - **_Staphylococcus aureus_** is a common cause of **nosocomial infections** or late-onset sepsis in neonates, particularly in ventilated or catheterized infants. - It is not the most common pathogen for community-acquired **early-onset neonatal pneumonia**. *Listeria* - **_Listeria monocytogenes_** can cause severe neonatal sepsis and pneumonia, often associated with maternal consumption of contaminated food. - While it is a significant pathogen, it is less common overall than GBS as a cause of early-onset neonatal pneumonia in most regions.

Question 1

All are true about congenital Toxoplasmosis EXCEPT which of the following?

Accepted Answer

Conjunctivitis

Answer

Hydrocephalus

Answer

Cerebral calcification

Answer

Chorioretinitis

Question 2

Which of the following is a classic triad of congenital rubella syndrome?

Accepted Answer

Patent ductus arteriosus, cataracts, and deafness

Answer

Hepatosplenomegaly, mental retardation, and deafness

Answer

Chorioretinitis, multiorgan failure, and pneumonitis

Answer

None of the options

Question 3

Which of the following methods is not recommended for resuscitating a newborn baby with a heart rate less than 60 beats per minute?

Accepted Answer

slapping the back

Answer

oxygen therapy

Answer

tactile stimulation

Answer

chest compression

Question 4

Erythematous blotchy rash is seen on the abdomen, trunk, and face of a 3-day-old child along with yellowish papules. The child appears well. What is the appropriate management?

Accepted Answer

No treatment

Answer

Topical steroid and antibiotic lotion

Answer

Topical steroid cream

Answer

Intravenous antibiotics

Question 5

Which of the following statements about cephalhematoma is correct?

Accepted Answer

It is hemorrhage between the skull and periosteum

Answer

It is hemorrhage within the subcutaneous tissue around the skull

Answer

It is type of subdural hemorrhage

Answer

It is subperiosteal bleeding in the skull

Question 6

Further investigation is essential in a newborn with which of the following conditions?

Accepted Answer

Lens opacity

Answer

Vaginal bleed

Answer

Subconjunctival hemorrhage

Answer

Erythema toxicum

Question 7

Most common site for bone marrow aspiration in neonates is -

Accepted Answer

Anteromedial tibia

Answer

Anterior superior iliac crest

Answer

Posterior superior iliac crest

Answer

Sternum

Question 8

Which of the following drugs is most commonly used for cardiovascular support in post-resuscitation care of neonates?

Accepted Answer

Dopamine

Answer

Dobutamine

Answer

Epinephrine

Answer

Sodium Bicarbonate

Question 9

A 45-day-old infant presents with seizures. Examination reveals he is icteric, has bulging fontanelles, and exhibits opisthotonic posture. Which of the following treatments is NOT indicated?

Accepted Answer

Chlorpromazine

Answer

Phenobarbital

Answer

Phototherapy

Answer

Exchange Transfusion

Question 10

What is the most common cause of pneumonia in early onset sepsis in neonates?

Accepted Answer

Group B streptococcus

Answer

H influenzae

Answer

Coagulase positive staph aureus

Answer

Listeria

Neonatology — MCQs

Neonatology — MCQs

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