Neonatology Practice Questions

Q: Ophthalmic examination to screen for retinopathy of prematurity is mandatory for newborns with birth weight less than?

1500 grams. ### Explanation **1. Why 1500 grams is correct:** Retinopathy of Prematurity (ROP) is a vasoproliferative disorder affecting the incomplete vascularization of the retina in preterm infants. According to the **National Neonatology Forum (NNF) of India** and international guidelines (like AAP), screening is mandatory for infants with a **birth weight ≤ 1500 grams** or a **gestational age ≤ 30 weeks**. These infants are at the highest risk because their retinal vessels have not reached the periphery (ora serrata), making them vulnerable to hypoxia-induced overproduction of VEGF (Vascular Endothelial Growth Factor) and subsequent abnormal neovascularization. **2. Why the other options are incorrect:** * **A (1000 grams):** While "Extremely Low Birth Weight" (ELBW) infants (<1000g) are at the highest risk for aggressive ROP, using this as the cutoff would miss a significant number of "Very Low Birth Weight" (VLBW) infants who also develop treatable disease. * **C & D (2000g & 2500g):** These weights are generally too high for routine screening. However, in developing countries like India, screening is extended to infants between **1500–2000g** only if they have an unstable clinical course (e.g., prolonged oxygen therapy, sepsis, or blood transfusions). 2500g is considered a normal birth weight. **3. Clinical Pearls for NEET-PG:** * **Timing of First Screen:** Usually at **4 weeks (30 days)** of life. For very preterm infants (<28 weeks), it is done at 2–3 weeks of life. * **"When to Screen" Rule:** "30-30 Rule" (≤30 weeks gestation or ≤1500g birth weight). * **Plus Disease:** Characterized by dilatation and tortuosity of posterior pole retinal vessels; it is a key indicator for treatment. * **Treatment of Choice:** Laser photocoagulation (diode laser) of the avascular retina. Intravitreal Anti-VEGF (Ranibizumab/Bevacizumab) is an emerging alternative.

Q: A neonate requires bag and mask ventilation during cardiopulmonary resuscitation. The heart rate is 60-100 beats per minute. What is the next recommended treatment?

Stop chest compressions and continue ventilation.. **Explanation:** The management of neonatal resuscitation follows the **NRP (Neonatal Resuscitation Program) algorithm**, which is strictly guided by the heart rate (HR). 1. **Why Option D is Correct:** In neonatal resuscitation, the primary goal is establishing effective ventilation. Chest compressions are indicated only when the HR remains **below 60 bpm** despite 30 seconds of effective positive pressure ventilation (PPV). If the HR rises to **60–100 bpm**, the criteria for chest compressions are no longer met. Therefore, compressions should be stopped to avoid unnecessary trauma and to focus on improving oxygenation, while PPV (ventilation) must continue until the HR exceeds 100 bpm and spontaneous respiration is established. 2. **Why Other Options are Incorrect:** * **Option A:** Adrenaline is only indicated if the HR remains **below 60 bpm** after at least 60 seconds of coordinated chest compressions and ventilation with 100% oxygen. * **Option B & C:** Chest compressions are contraindicated if the HR is above 60 bpm. Continuing them at a HR of 60–100 bpm is unnecessary and interferes with effective ventilation. **Clinical Pearls for NEET-PG:** * **Golden Minute:** The first 60 seconds of life are critical for completing the initial steps and starting PPV if needed. * **Compression-to-Ventilation Ratio:** In neonates, it is **3:1** (90 compressions and 30 breaths per minute). * **Target SpO2:** Do not expect 100% saturation immediately; at 1 minute, the target is only 60-65%. * **Depth of Compression:** One-third of the anteroposterior diameter of the chest. * **Preferred Technique:** The **two-thumb technique** is superior to the two-finger technique as it generates better perfusion pressure.

Q: What is the drug of choice for neonatal idiopathic thrombocytopenic purpura (ITP)?

Intravenous immunoglobulin (IVIG). **Explanation:** Neonatal Idiopathic Thrombocytopenic Purpura (ITP) usually occurs due to the transplacental passage of maternal anti-platelet IgG antibodies (passive immunization). **Why IVIG is the Correct Answer:** Intravenous Immunoglobulin (IVIG) is the **drug of choice** because it rapidly increases the platelet count by blocking the Fc receptors on splenic macrophages, preventing the destruction of antibody-coated platelets. In neonates, IVIG is preferred over steroids due to its faster onset of action and better safety profile, minimizing the risk of systemic side effects associated with corticosteroids in the neonatal period. **Analysis of Incorrect Options:** * **Platelet Transfusion (A):** This is generally **ineffective** because the circulating maternal antibodies will quickly destroy the transfused platelets. It is reserved only for life-threatening emergencies (e.g., intracranial hemorrhage). * **Prednisolone (B) & Dexamethasone (C):** While corticosteroids are first-line treatments for *adult* or *childhood* ITP, they are second-line in neonates. They take longer to act (48–72 hours) and carry risks of growth suppression and metabolic disturbances in newborns. **High-Yield Clinical Pearls for NEET-PG:** * **Definition:** Neonatal ITP occurs in infants born to mothers with active ITP or a history of ITP. * **Nadir:** Platelet counts usually reach their lowest point (nadir) between **day 2 and day 5** of life. * **Management Trigger:** Treatment is typically indicated if the platelet count drops below **20,000–30,000/µL** or if there is active bleeding. * **Prognosis:** The condition is self-limiting and resolves within 1–2 months as maternal antibodies are cleared from the infant's circulation.

Q: Kangaroo mother care is FALSE regarding which of the following statements?

Can also be given by the father. **Explanation:** Kangaroo Mother Care (KMC) is a standardized, evidence-based care system for newborn infants, particularly preterm and low birth weight (LBW) babies. **Why Option A is the correct answer (False statement):** The question asks which statement is **FALSE**. However, in standard medical practice and WHO guidelines, KMC **can** be provided by the father, grandmother, or any other family member. The term "Mother" in KMC is traditional, but the physiological benefits of skin-to-skin contact are achieved regardless of the provider. Therefore, stating it "can also be given by the father" is a **true** statement. *Note: In the context of this specific MCQ structure, if Option A is marked as the "False" statement, it is technically a pedagogical error in the question itself, as all three options (A, B, and C) are clinically true statements regarding KMC.* **Analysis of other options:** * **Option B:** KMC is specifically indicated for stable LBW babies (<2500g) and preterm infants to promote growth and reduce morbidity. * **Option C:** One of the primary pillars of KMC is providing "Effective Thermal Control" through continuous skin-to-skin contact, which prevents hypothermia. **High-Yield Clinical Pearls for NEET-PG:** 1. **Components of KMC:** 1) Kangaroo position (Skin-to-skin), 2) Kangaroo nutrition (Exclusive breastfeeding), and 3) Early discharge and follow-up. 2. **Eligibility:** The baby must be hemodynamically stable. There is no minimum weight limit, but the baby should not be in respiratory distress or shock. 3. **Duration:** Should be practiced as long as possible (at least 1 hour per session to avoid frequent handling) until the baby reaches ~2500g or term gestation. 4. **Benefits:** Reduces neonatal mortality, sepsis, and hypoglycemia; improves maternal-infant bonding and breastfeeding rates.

Q: All of the following are associated with Tracheoesophageal fistula except?

Oligohydramnios. **Explanation:** The correct answer is **Oligohydramnios** because Tracheoesophageal Fistula (TEF), particularly when associated with Esophageal Atresia (EA), is classically associated with **Polyhydramnios**, not oligohydramnios. **1. Why Oligohydramnios is the "Except" (Correct Answer):** In utero, the fetus normally swallows amniotic fluid, which is then absorbed in the gastrointestinal tract. In cases of EA/TEF, the blind-ending esophageal pouch prevents the fetus from swallowing amniotic fluid. This leads to an accumulation of fluid in the amniotic sac, resulting in **Polyhydramnios**. Oligohydramnios is typically associated with renal anomalies (e.g., Potter sequence). **2. Analysis of Incorrect Options:** * **VATER/VACTERL Association:** TEF is a core component of this association (Vertebral defects, Anal atresia, Cardiac defects, **TEF**, Renal anomalies, and Limb defects). Approximately 50% of TEF patients have associated anomalies. * **Excessive Salivation:** This is the classic clinical presentation. Because the esophagus is atretic (blind pouch), the newborn cannot swallow their own saliva, leading to "frothing" or drooling at the mouth. * **Aspiration Pneumonia:** This occurs due to the reflux of gastric contents through the distal fistula into the trachea or from the overflow of saliva/feeds from the proximal blind pouch into the lungs. **Clinical Pearls for NEET-PG:** * **Most Common Type:** Type C (Esophageal atresia with distal TEF) – occurs in ~85% of cases. * **Diagnosis:** Inability to pass a firm, radio-opaque nasogastric tube (NGT) into the stomach. An X-ray will show the tube coiled in the upper pouch. * **Gas Pattern:** The presence of air in the stomach on X-ray confirms a **distal** fistula. A "gasless abdomen" indicates isolated esophageal atresia without a distal fistula. * **Management:** Keep the infant upright (to prevent reflux) and use continuous suction of the upper pouch until surgery.

Q: What is true about transient tachypnea of the newborn?

Interlobar fissure effusion is present. **Explanation:** **Transient Tachypnea of the Newborn (TTN)**, also known as "Wet Lung Disease," occurs due to the delayed clearance of fetal lung fluid. Normally, this fluid is absorbed via epithelial sodium channels during labor and cleared by pulmonary lymphatics and capillaries. **Why Option C is Correct:** The hallmark of TTN on a chest X-ray is evidence of retained fluid. This manifests as **interlobar fissure effusion** (fluid in the horizontal or oblique fissures), prominent vascular markings (sunburst pattern), and occasionally mild cardiomegaly or pleural effusion. **Why the Other Options are Incorrect:** * **Option A:** **Air bronchograms** are characteristic of **Respiratory Distress Syndrome (RDS)**, caused by surfactant deficiency leading to alveolar collapse against patent airways. They are not a feature of TTN. * **Option B:** TTN is most common in **term or late-preterm infants**, especially those born via **elective Cesarean section** (due to the lack of the "thoracic squeeze" and hormonal surges of labor). In contrast, RDS is primarily a disease of preterm infants. * **Option D:** TTN is a self-limiting condition. Respiratory distress typically resolves rapidly, usually within **24 to 72 hours**. If distress persists beyond 3-4 days, alternative diagnoses should be considered. **High-Yield Clinical Pearls for NEET-PG:** * **Risk Factors:** Elective C-section, maternal asthma, and maternal diabetes. * **Clinical Presentation:** Early onset of tachypnea (up to 100-120 bpm) shortly after birth. * **Management:** Primarily supportive (oxygen via hood or nasal cannula). It is a benign condition with an excellent prognosis. * **X-ray Buzzwords:** "Sunburst appearance," "Starry sky," or "Hazy lung fields."

Q: Which is the most common congenital abnormality in a baby born to a diabetic mother?

Ventricular septal defect. **Explanation:** Infants of Diabetic Mothers (IDM) are at a significantly higher risk for congenital malformations due to the teratogenic effects of maternal hyperglycemia during the period of organogenesis. **1. Why Ventricular Septal Defect (VSD) is correct:** While certain anomalies are highly specific to diabetic pregnancies, **Ventricular Septal Defect (VSD)** is the **most common** congenital abnormality overall. Congenital heart diseases (CHD) are the most frequent group of malformations in IDMs, and among them, VSD occurs with the highest frequency. Other common cardiac issues include Transposition of the Great Arteries (TGA) and Hypertrophic Cardiomyopathy (specifically asymmetric septal hypertrophy). **2. Analysis of Incorrect Options:** * **Sacral Agenesis (Caudal Regression Syndrome):** This is the **most specific** (pathognomonic) abnormality for maternal diabetes, but it is not the most common. Its presence is highly suggestive of diabetes, but its absolute incidence is lower than VSD. * **Anencephaly and Meningomyelocele:** These are Neural Tube Defects (NTDs). While the risk of NTDs is increased 10-fold in diabetic pregnancies, they occur less frequently than cardiac defects. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common overall anomaly:** VSD (Cardiac). * **Most specific anomaly:** Sacral Agenesis / Caudal Regression Syndrome. * **Most common metabolic abnormality:** Hypoglycemia. * **Most common electrolyte abnormality:** Hypocalcemia (often associated with hypomagnesemia). * **Other associations:** Small Left Colon Syndrome, Renal Vein Thrombosis, and Polycythemia. * **HbA1c Correlation:** The risk of malformations correlates directly with maternal HbA1c levels in the first trimester.

Question 1

Ophthalmic examination to screen for retinopathy of prematurity is mandatory for newborns with birth weight less than?

Accepted Answer

1500 grams

Answer

1000 grams

Answer

2000 grams

Answer

2500 grams

Question 2

A woman who developed chickenpox 2 days ago is admitted in labor. What is the best method to prevent infection in the neonate?

Accepted Answer

Administer varicella zoster immunoglobulin (VZIG) to the neonate soon after birth

Answer

Administer varicella zoster vaccine to the neonate

Answer

Perform a cesarean section immediately

Answer

Prevent breastfeeding

Question 3

A neonate requires bag and mask ventilation during cardiopulmonary resuscitation. The heart rate is 60-100 beats per minute. What is the next recommended treatment?

Accepted Answer

Stop chest compressions and continue ventilation.

Answer

Continue ventilation and start adrenaline.

Answer

Continue ventilation and start chest compressions.

Answer

Continue chest compressions and ventilation.

Question 4

What is the drug of choice for neonatal idiopathic thrombocytopenic purpura (ITP)?

Accepted Answer

Intravenous immunoglobulin (IVIG)

Answer

Platelet transfusion

Answer

Prednisolone

Answer

Dexamethasone

Question 5

Donor breast milk is known to transmit which of the following infections?

Accepted Answer

Rubella

Answer

Tuberculosis

Answer

CMV

Answer

HIV

Question 6

Kangaroo mother care is FALSE regarding which of the following statements?

Accepted Answer

Can also be given by the father

Answer

Especially for low birth weight babies

Answer

Provides effective thermal control

Answer

All of the above

Question 7

The blood sugar in a neonate shortly after birth reaches the lowest level at what age?

Accepted Answer

3 hours

Answer

1 hour

Answer

6 hours

Answer

8 hours

Question 8

All of the following are associated with Tracheoesophageal fistula except?

Accepted Answer

Oligohydramnios

Answer

VATER association

Answer

Excessive salivation

Answer

Aspiration pneumonia

Question 9

What is true about transient tachypnea of the newborn?

Accepted Answer

Interlobar fissure effusion is present

Answer

Air bronchogram is seen

Answer

It is common in preterm infants

Answer

Respiratory distress resolves in 6-10 days

Question 10

Which is the most common congenital abnormality in a baby born to a diabetic mother?

Accepted Answer

Ventricular septal defect

Answer

Anencephaly

Answer

Meningomyelocele

Answer

Sacral agenesis

Neonatology — MCQs

Neonatology — MCQs

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