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Difficulty: MediumPediatric Neurologic Disorders

A 3-week-old boy is admitted to the neonatal intensive care unit after experiencing two episodes of rhythmic twitching of his right arm and leg, each lasting approximately one minute. He was born at term via uncomplicated spontaneous vaginal delivery to a 28-year-old primigravida. His prenatal course was unremarkable. On physical examination, the neonate is afebrile and vital signs are stable. He alerts to loud sounds and briefly tracks his mother's face. Examination of the skin reveals scattered erythematous macules with central 1-2 mm yellowish pustules over his trunk and face. A magnetic resonance imaging (MRI) scan of the brain demonstrates restricted diffusion in the left middle cerebral artery territory, consistent with an acute ischemic stroke. When discussing the patient's condition and expected care plan with the parents, which of the following statements are correct? (Select all that apply)

  1. The dermatologic findings are benign and self-limited, requiring observation without targeted therapyAnswer
  2. Diagnostic workup should include echocardiography to evaluate for structural cardiac anomalies and a thrombophilia screenAnswer
  3. C
    The cutaneous lesions represent a serious disseminated infectious process necessitating immediate intravenous acyclovir and broad-spectrum antibiotics
  4. D
    The infant is exhibiting significant developmental delay because he has not yet developed a social smile or purposeful grasping
  5. E
    A root cause analysis must be conducted specifically to implement punitive disciplinary action against the delivery team

Answer

The correct statements recognize the skin findings as benign (requiring no treatment) and identify the necessity of cardiac and hematologic evaluations for the stroke.
The correct selections address both the primary neurologic issue and the incidental physical exam findings appropriately. An acute ischemic stroke in a neonate requires comprehensive evaluation to identify the etiology and prevent recurrence. Standard workup includes an echocardiogram to rule out structural congenital heart disease with right-to-left shunting (which can facilitate paradoxical emboli) and a thrombophilia screen. Furthermore, the dermatologic description of erythematous macules with central yellowish pustules in an otherwise stable newborn is the hallmark presentation of erythema toxicum neonatorum. This rash is completely benign, self-limited, and requires no pharmacologic intervention, only parental reassurance.

Step-by-Step Solution

1
Analyze the neurologic presentation
The infant has focal seizures and an MRI confirming a left middle cerebral artery ischemic stroke.
Identifying the primary neurologic insult dictates the subsequent diagnostic workup for underlying etiologies.
2
Determine the appropriate workup for the neurologic insult
Neonatal stroke warrants investigation for cardioembolic sources (via echocardiogram) and hypercoagulable states (via thrombophilia testing).
Unlike adult strokes, neonatal strokes frequently stem from congenital structural heart disease, placental thromboembolism, or inherited thrombophilias.
3
Analyze the dermatologic and developmental findings
The rash is classic for erythema toxicum neonatorum. The infant's developmental milestones (tracking, alerting to sound) are appropriate for 3 weeks of age.
Accurately identifying benign physiological findings prevents unnecessary interventions and parental anxiety.

Key Concept

Management of Neonatal Ischemic Stroke and Recognition of Benign Neonatal Findings
Estimated Time:2m 0s
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Topics

Pediatric Neurologic Disorders

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