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Difficulty: MediumNeonatal Disorders

At 2 hours of life, a male newborn is assessed in the nursery because he has developed rapid breathing. His delivery occurred at 38 weeks and 6 days of gestation via a scheduled cesarean section due to a maternal history of previous cesarean deliveries. The pregnancy was unremarkable, and the mother had a negative group B streptococcus swab at 36 weeks. There was no rupture of membranes prior to the surgical delivery. One- and five-minute Apgar scores were 8 and 9, respectively. Current vital signs demonstrate a temperature of 36.8°C (98.2°F), a heart rate of 152/min, and a respiratory rate of 78/min. Pulse oximetry indicates an oxygen saturation of 96% on room air. The physical examination highlights an alert newborn displaying mild intercostal retractions, nasal flaring, and scattered crackles upon pulmonary auscultation. Additionally, the skin exam reveals multiple erythematous macules containing 1-to-2 mm central pustules distributed across the trunk. A chest radiograph reveals bilateral hyperinflation, prominent perihilar streaking, and visible fluid within the right horizontal fissure. Which of the following is the most appropriate next step in the management of this patient?

  1. Supportive care with continued clinical monitoringAnswer
  2. B
    Intravenous ampicillin and gentamicin
  3. C
    Intravenous acyclovir therapy
  4. D
    Inhaled albuterol therapy
  5. E
    Intravenous furosemide therapy

Answer

Supportive care with continued clinical monitoring
The correct answer is supportive care and continued monitoring because this patient's presentation represents two benign, self-limiting newborn conditions: Transient Tachypnea of the Newborn (TTN) and Erythema Toxicum Neonatorum (ETN). TTN is caused by delayed resorption of fetal lung fluid and classically occurs in term infants delivered via cesarean section without prior labor. The chest radiograph is pathognomonic, demonstrating hyperinflation, perihilar streaking, and fluid in the interlobar fissures. Because the infant is afebrile, lacks infectious risk factors, and is maintaining a normal oxygen saturation (96%) on room air, supportive care (which may include supplemental oxygen if saturations drop) is the standard of care. The rash described is ETN, which appears in the first few days of life, resolves spontaneously, and requires no therapy.

Step-by-Step Solution

1
Evaluate the patient's respiratory presentation and radiographic findings.
The neonate has tachypnea, mild retractions, and a chest radiograph showing hyperinflation and fluid in the fissures following a scheduled cesarean delivery.
These findings represent the classic presentation of Transient Tachypnea of the Newborn (TTN), which is caused by delayed clearance of fetal alveolar fluid.
2
Evaluate the dermatologic findings.
The infant has scattered erythematous macules with central pustules on the trunk.
This physical exam finding describes erythema toxicum neonatorum (ETN), a benign, self-limiting rash common in healthy full-term neonates.
3
Determine the appropriate management based on the integrated clinical picture.
The patient is hemodynamically stable, afebrile, and adequately oxygenating on room air; therefore, supportive care is the only indicated intervention.
Both TTN and ETN are benign and self-resolving. Unnecessary pharmacologic interventions or invasive therapies should be avoided.

Key Concept

Transient Tachypnea of the Newborn (TTN) typically presents with respiratory distress and fluid in the lung fissures on radiography in term or late-preterm infants following a cesarean section without labor. It is a self-limiting condition requiring only supportive care.
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Topics

Neonatal Disorders

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