Neonatology Practice Questions

Q: Positive pressure ventilation (PPV) in neonatal resuscitation is indicated in all of the following except:

Nonvigorous child born through meconium stained liquor. ***Nonvigorous child born through meconium stained liquor*** - The latest NRP guidelines advise against routine **intubation for tracheal suctioning** for *non-vigorous* infants born through meconium-stained amniotic fluid. - Instead, initial steps should focus on providing **positive pressure ventilation (PPV)** if the infant is apneic or gasping. *Apnea* - **Apnea** (absence of breathing) is a direct indication for initiating **positive pressure ventilation** in neonatal resuscitation. - An infant who is not breathing effectively requires immediate respiratory support. *Heart rate less than 100 BPM* - A **heart rate below 100 BPM** in a newborn baby is a critical indicator for initiating **positive pressure ventilation**. - This signifies inadequate oxygenation and perfusion, necessitating immediate intervention to improve oxygen delivery. *Persistent central cyanosis in spite of 100% free flow oxygen* - **Persistent central cyanosis** despite provision of 100% free-flow oxygen indicates a significant respiratory or cardiac issue requiring further intervention, often including **positive pressure ventilation**. - Free-flow oxygen alone is insufficient to correct profound hypoxemia in such cases.

Q: A neonate is being resuscitated as shown in the image. What is the ratio of chest compressions:rescue breaths for this patient?

3:1. ***3:1*** - The image depicts a **neonate or infant** undergoing CPR, indicated by the two-thumb encircling technique for chest compressions. - For **neonatal resuscitation** (newborns in the delivery room and early neonatal period), the recommended compression-to-ventilation ratio is **3 compressions to 1 breath** as per NRP guidelines. - This ratio ensures adequate ventilation for presumed asphyxial cardiac arrest while maintaining coordinated compressions. *5:1* - This ratio is **NOT recommended** in current resuscitation guidelines (AHA/ILCOR/NRP). - This may cause confusion with older or obsolete protocols, but it is not part of modern CPR algorithms. *15:2* - The 15:2 ratio is recommended for **two-rescuer CPR in infants and children** (beyond the neonatal period). - This ratio aims to maximize ventilations while maintaining effective chest compressions in a team setting. - This is NOT used for neonatal resuscitation in the delivery room. *30:2* - The 30:2 ratio is the standard for **adult CPR** and **single-rescuer CPR in infants and children** (beyond neonatal period). - It prioritizes compressions over breaths and is used when only one rescuer is available. - This is NOT appropriate for neonatal resuscitation where the 3:1 ratio is preferred.

Q: What ventilation modality is shown below?

Nasal CPAP. ***Nasal CPAP*** - The image shows a device applied to the nose of an infant, providing a continuous flow of air which is characteristic of **Nasal Continuous Positive Airway Pressure (nCPAP)**. - This modality helps maintain lung volume, improve oxygenation, and reduce the work of breathing in neonates with respiratory distress. *High frequency jet ventilation* - This modality involves delivering small tidal volumes at very **high frequencies** (hundreds of breaths per minute) through a specialized ventilator and endotracheal tube. - The image does not depict an **endotracheal tube** or the rapid, small tidal volume delivery characteristic of jet ventilation. *Inverse ratio ventilation* - This is a mode of **mechanical ventilation** where the inspiratory time is longer than the expiratory time (I:E ratio > 1:1), typically used in intubated patients. - The image shows a non-invasive nasal device, not an **intubated patient** on a mechanical ventilator. *Intermittent positive pressure ventilation* - This refers to delivering breaths with positive pressure, either invasively (via endotracheal tube) or non-invasively (via mask), to assist or control breathing. - While CPAP provides positive pressure, "intermittent positive pressure ventilation" implies cyclical breaths, which is not the primary defining feature shown, and CPAP (continuous pressure) is a more specific and accurate description for the depicted setup.

Q: A child presents in the first week of life with recurrent vomiting, failure to thrive. On examination enlarged liver and spleen are palpated. Blood work shows hyperlipidemia and deranged LFT. CT abdomen was performed. What is the clinical diagnosis?

Wolman disease. ***Wolman disease*** - The constellation of **recurrent vomiting**, **failure to thrive**, **hepatosplenomegaly**, **hyperlipidemia**, **deranged LFTs** in an infant, and the presence of **adrenal calcifications** on CT abdomen (as suggested by the image showing bright areas above the kidneys) are highly characteristic of Wolman disease. - Wolman disease is a **lysosomal storage disorder** caused by a deficiency in **lysosomal acid lipase**, leading to the accumulation of cholesteryl esters and triglycerides in various tissues, particularly the liver, spleen, and adrenal glands. *Von Gierke disease* - This is a **glycogen storage disease** (Type I), characterized by **hypoglycemia**, lactic acidosis, hyperlipidemia, and hepatomegaly, but typically **without adrenal calcifications** or splenomegaly as prominent features in the first week of life. - While it causes hepatomegaly and hyperlipidemia, the profound adrenal calcification seen on CT rules it out as the primary diagnosis given the presented image. *Tay-Sachs disease* - This is a **lysosomal storage disorder** affecting hexosaminidase A, leading to GM2 ganglioside accumulation, primarily in neurons. - Clinical presentation involves **neurological deterioration**, **cherry-red spot on the retina**, and seizures, but typically **no hepatosplenomegaly, adrenal calcifications, or significant liver dysfunction**. *Biotinidase deficiency* - This is a metabolic disorder affecting biotin metabolism, presenting with **neurological symptoms** (seizures, hypotonia), skin rash, and alopecia. - It does **not typically involve hepatosplenomegaly, hyperlipidemia, or adrenal calcifications**.

Q: A 2-hour-old neonate born by normal vaginal delivery has a scalp swelling, with normal cry and activity. What is the probable cause?

Serosanguinous subcutaneous fluid. ***Serosanguinous subcutaneous fluid*** - This description is consistent with **caput succedaneum**, a common finding in neonates after vaginal delivery. It is a **diffuse, edematous swelling of the scalp** that crosses suture lines, caused by pressure during birth. - The swelling arises from **serosanguinous fluid** accumulating in the **subcutaneous tissues** (between the skin and galea aponeurotica) and typically resolves within a few days. *Focal subaponeurotic blood collection* - This describes a **subgaleal hemorrhage**, which involves blood collection *between the scalp aponeurosis and the periosteum*. - Subgaleal hemorrhages can be very extensive and life-threatening, often presenting with signs of **hypovolemic shock** as it can accumulate a large amount of blood, which is inconsistent with the "normal cry and activity" of the neonate. *Chignon* - A chignon is a **localized scalp edema** or swelling that forms as a result of a **vacuum extractor** application during delivery. - While it is a scalp swelling, the question states "normal vaginal delivery" and does not mention vacuum extraction, making it less likely. *Depressed skull fracture* - A **depressed skull fracture** involves an indentation of the skull bone, which would be a **hard, bony defect** rather than a soft, fluid-filled swelling. - While it can occur during birth, it is usually a more severe injury and might present with neurological symptoms or a palpable bony depression, neither of which are described.

Q: The lesion shown in the image is:

Vernix caseosa. ***Vernix caseosa*** - The image shows a **thick, whitish, cheese-like substance** covering the scalp, which is characteristic of **vernix caseosa** on a neonate. - **Vernix caseosa** is a natural protective waxy or cheese-like white substance found on the skin of newborn human babies. *Atopic dermatitis* - **Atopic dermatitis** typically presents with **eczematous, itchy, red, and inflamed skin lesions**, often in flexural areas, which is not consistent with the image. - It usually involves **dry skin, lichenification, and excoriations**, not the thick, cheese-like coating seen here. *Seborrheic dermatitis* - While seborrheic dermatitis can involve the scalp, it typically appears as **greasy, yellowish scales** on an erythematous base, often referred to as "cradle cap" in infants. - The texture and widespread, thick white appearance in the image are less consistent with typical seborrheic dermatitis. *Urticarial dermatitis* - **Urticarial dermatitis** is characterized by the presence of **wheals (hives)**, which are transient, itchy, raised erythematous lesions with well-defined borders. - The image does not show classic **urticarial wheals**; instead, it depicts a continuous, thick, protective layer.

Q: The following image shows:

Transcutaneous bilirubinometer. ***Transcutaneous bilirubinometer*** - The image depicts a handheld device placed on a **neonate's skin**, consistent with a **transcutaneous bilirubinometer** used to non-invasively measure bilirubin levels. - This device is crucial for screening and monitoring **neonatal jaundice**, as it reduces the need for frequent blood draws. *Woods lamp* - A Woods lamp emits **ultraviolet light** and is used to diagnose various skin conditions, including fungal infections and pigmentation disorders. - Its appearance and function are distinct from the device shown, which is applied directly to the skin for internal measurement. *Thermoscope* - A thermoscope is a device for detecting changes in temperature, often in a qualitative rather than quantitative way. Modern thermometers serve this purpose. - The device in the image has a digital display indicating complex readings, not simply temperature changes. *Transcutaneous pulse oximeter* - A transcutaneous pulse oximeter typically attaches to a digit, earlobe, or foot and measures **oxygen saturation** and **heart rate** through light absorption. - The device in the image has a different form factor and is designed for broad skin contact, not for pulsatile blood flow measurement.

Q: Which of the following interventions is being done in this neonate?

Nasal CPAP and orogastric tube to decompress stomach. ***Nasal CPAP and orogastric tube to decompress stomach*** - The image shows a neonate with a device inserted into the nostrils for **nasal continuous positive airway pressure (nCPAP)**, used to support breathing. - Additionally, a tube is visible in the neonate's mouth leading to the stomach, which is an **orogastric (OG) tube** used for feeding or stomach decompression, especially important when using CPAP as air can be swallowed. *Positive pressure ventilation and NG tube to decompress stomach* - This option refers to positive pressure ventilation, which typically involves an **endotracheal tube** or mask/bag, neither of which is clearly depicted as the primary respiratory support. - An **NG tube (nasogastric tube)** would be inserted through the nose, but the tube shown for gastric access is in the mouth (orogastric). *Surfactant therapy and NG tube to decompress stomach* - **Surfactant therapy** is administered directly into the lungs, usually via an endotracheal tube, and is not a visible intervention in the image itself. - As noted previously, the tube for gastric decompression appears to be **orogastric**, not nasogastric. *Oxygen hood* - An **oxygen hood** is a clear plastic dome placed over the neonate's head to deliver oxygen, which is not what is shown in the image. - The visible tubes are for respiratory support and gastric access, indicating a more direct and invasive form of intervention than an oxygen hood.

Q: Best treatment for the lesion shown in the figure?

Silver nitrate cauterization. ***Silver nitrate cauterization*** - The image shows an **umbilical granuloma**, a common benign condition appearing as a soft, reddish-pink moist lesion in the umbilical region after the umbilical cord stump falls off. - **Silver nitrate cauterization** is the gold standard treatment for umbilical granulomas due to its effectiveness in drying and shrinking the granuloma with minimal invasiveness. *Wait and watch for spontaneous regression* - While some mild cases of umbilical granuloma might resolve spontaneously, this lesion appears significant enough to warrant intervention, especially if it's persistent or causing discharge. - **Spontaneous regression** is less likely for larger, more symptomatic granulomas, and waiting can prolong discomfort or risk infection. *Fistulogram and surgical excision* - A **fistulogram and surgical excision** would be indicated if there's suspicion of a **patent omphalomesenteric duct** or a **urachal fistula**, which are much more serious conditions. - The image does not present features suggestive of a fistula (e.g., persistent fecal or urinary discharge), making surgical excision an overly aggressive approach for a simple granuloma. *Laser excision* - **Laser excision** is a viable but usually **second-line treatment** for umbilical granulomas, often reserved for cases that fail silver nitrate treatment or are larger. - It is more invasive and typically more expensive than silver nitrate cauterization, which is effective for most cases.

Q: All are true about the image shown except:

Hairy pinna. ***Hairy pinna*** - **Hairy pinna** (hypertrichosis pinnae auris) is a condition characterized by excessive hair growth on the external ear, primarily affecting adult males, and is **not associated** with neonatal macrosomia or maternal diabetes. - This is the correct answer as it is the statement that is **NOT true** about infants of diabetic mothers. *Term large for date* - The image depicts a **macrosomic** infant, often described as "large for gestational age" or "large for date," which is a **classic finding** in infants of mothers with **gestational diabetes mellitus**. - Infants of diabetic mothers tend to be larger due to the effects of **maternal hyperglycemia** and resultant fetal **hyperinsulinemia** *in utero*. *High packed cell volume* - Infants of diabetic mothers are prone to **polycythemia**, which is an **elevated packed cell volume (hematocrit)**. - Polycythemia in these infants results from **chronic intrauterine hypoxia**, leading to increased **erythropoietin production** and compensatory red blood cell proliferation. - This can lead to complications including hyperbilirubinemia and increased blood viscosity. *Hyperinsulinemia* - **Hyperinsulinemia** *in utero* is a **hallmark** of infants born to mothers with poorly controlled diabetes, as the fetal pancreas produces excess insulin in response to maternal hyperglycemia. - This excess insulin acts as a **growth factor**, contributing to the **macrosomia** and organomegaly seen in these infants. - Postnatally, hyperinsulinemia predisposes to **neonatal hypoglycemia** as the glucose supply from the mother is suddenly discontinued.

Question 1

Positive pressure ventilation (PPV) in neonatal resuscitation is indicated in all of the following except:

Accepted Answer

Nonvigorous child born through meconium stained liquor

Answer

Apnea

Answer

Heart rate less than 100 BPM

Answer

Persistent central cyanosis in spite of 100% free flow oxygen

Question 2

A neonate is being resuscitated as shown in the image. What is the ratio of chest compressions:rescue breaths for this patient?

Accepted Answer

3:1

Answer

5:1

Answer

15:2

Answer

30:2

Question 3

What ventilation modality is shown below?

Accepted Answer

Nasal CPAP

Answer

High frequency jet ventilation

Answer

Inverse ratio ventilation

Answer

Intermittent positive pressure ventilation

Question 4

A child presents in the first week of life with recurrent vomiting, failure to thrive. On examination enlarged liver and spleen are palpated. Blood work shows hyperlipidemia and deranged LFT. CT abdomen was performed. What is the clinical diagnosis?

Accepted Answer

Wolman disease

Answer

Von Gierke disease

Answer

Tay-Sachs disease

Answer

Biotinidase deficiency

Question 5

A 2-hour-old neonate born by normal vaginal delivery has a scalp swelling, with normal cry and activity. What is the probable cause?

Accepted Answer

Serosanguinous subcutaneous fluid

Answer

Focal subaponeurotic blood collection

Answer

Chignon

Answer

Depressed skull fracture

Question 6

The lesion shown in the image is:

Accepted Answer

Vernix caseosa

Answer

Atopic dermatitis

Answer

Seborrheic dermatitis

Answer

Urticarial dermatitis

Question 7

The following image shows:

Accepted Answer

Transcutaneous bilirubinometer

Answer

Woods lamp

Answer

Thermoscope

Answer

Transcutaneous pulse oximeter

Question 8

Which of the following interventions is being done in this neonate?

Accepted Answer

Nasal CPAP and orogastric tube to decompress stomach

Answer

Positive pressure ventilation and NG tube to decompress stomach

Answer

Surfactant therapy and NG tube to decompress stomach

Answer

Oxygen hood

Question 9

Best treatment for the lesion shown in the figure?

Accepted Answer

Silver nitrate cauterization

Answer

Wait and watch for spontaneous regression

Answer

Fistulogram and surgical excision

Answer

Laser excision

Question 10

All are true about the image shown except:

Accepted Answer

Hairy pinna

Answer

Term large for date

Answer

High packed cell volume

Answer

Hyperinsulinemia

Neonatology — MCQs

Neonatology — MCQs

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