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Difficulty: MediumPediatric Infectious Diseases

Match each clinical presentation of a symptomatic neonate with the most appropriate first-line management for the underlying congenital infection.

  • A 2-day-old infant with microcephaly, periventricular calcifications, and profound sensorineural hearing loss.Oral valganciclovir or intravenous ganciclovir
  • A 1-day-old infant with macrocephaly due to hydrocephalus, diffuse parenchymal intracranial calcifications, and chorioretinitis.Pyrimethamine, sulfadiazine, and leucovorin
  • A 3-day-old infant with a continuous machine-like murmur, bilateral cataracts, and a failed newborn hearing screen.Supportive care and droplet precautions
  • A 1-week-old infant with copious, clear nasal discharge, hepatosplenomegaly, and a desquamating maculopapular rash on the palms and soles.Intravenous aqueous crystalline penicillin G

Answer

Congenital cytomegalovirus requires valganciclovir; congenital toxoplasmosis requires pyrimethamine and sulfadiazine; congenital rubella requires supportive care; and congenital syphilis requires intravenous penicillin G.
Each congenital infection presents with a distinct constellation of clinical findings that reliably guide the clinician to the correct diagnosis. Recognizing the unique differentiating features—such as calcification patterns (periventricular in CMV vs. diffuse in toxoplasmosis), structural cardiac defects (patent ductus arteriosus in rubella), and cutaneous findings (palmar/plantar desquamation in syphilis)—is critical for selecting the correct pathogen-specific antimicrobial therapy or appropriate supportive care.

Step-by-Step Solution

1
Analyze the first presentation (microcephaly, periventricular calcifications, hearing loss) to identify the congenital infection.
The clinical picture is diagnostic for congenital cytomegalovirus (CMV).
Periventricular calcifications are the hallmark neuroimaging finding of congenital CMV, distinguishing it from other TORCH infections.
2
Analyze the second presentation (hydrocephalus, diffuse calcifications, chorioretinitis) to identify the congenital infection.
The clinical picture represents the classic triad of congenital toxoplasmosis.
Diffuse parenchymal intracranial calcifications differentiate toxoplasmosis from the periventricular pattern seen in CMV.
3
Analyze the third presentation (machine-like murmur, cataracts, failed hearing screen) to identify the congenital infection.
These findings are diagnostic for congenital rubella syndrome.
The combination of a patent ductus arteriosus (machine-like murmur) and cataracts is highly specific for in-utero rubella exposure.
4
Analyze the fourth presentation (snuffles, hepatosplenomegaly, palmar/plantar desquamating rash) to identify the congenital infection.
This presentation is characteristic of early congenital syphilis.
A desquamating rash involving the palms and soles alongside persistent purulent or clear rhinitis (snuffles) in a newborn is pathognomonic for congenital syphilis.
5
Correlate each identified infection with its evidence-based pharmacotherapy.
CMV is paired with valganciclovir; Toxoplasmosis with pyrimethamine/sulfadiazine; Rubella with supportive care; Syphilis with penicillin G.
Matching the correct pathogen to its targeted antimicrobial or supportive strategy is essential for optimizing neonatal outcomes.

Key Concept

Diagnosis and targeted management of congenital TORCH infections
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Topics

Pediatric Infectious Diseases

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