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Updated: Sep 26 2016

Rubella

Snapshot
  • An infant is born sPhotomall for his gestational age and is noted to have hepatosplenomegaly, thrombocytopenia, hepatitis, jaundice, cataracts, and a "blueberry muffin" rash.
Introduction
  • Occurs after a German measles infection during pregnancy
  • TORCH infection (Toxoplasmosis, Other [Syphilis], Rubella, CMV, Herpes)
  • Transplacental transmission occurs in first trimester of pregnancy
  • Risk of transplacental transmission:
    • 80% in first trimester
    • 50% second trimester
    • 5% in third trimester
Presentation
  • Symptoms
    • usually present at birth including
      • purpuric "blueberry muffin" rash
      • cataracts
      • mental retardation
      • hearing loss
      • patent ductus arteriosis
  • Physical exam
    • IUGR may be evident on prenatal exam
    • hepatosplenomegaly
    • thrombocytopenia
    • hepatitis
    • jaundice
    • cataracts/glaucoma
    • "blueberry muffin" rash
    • hearing loss
    • PDA
    • mental retardation
Evaluation
  • IgM Rubella Ab
    • diagnostic golden standard when found in neonate's serum
  • Viral culture
    • may help identify infectious agent
Differential
  • Other TORCH infections
Treatment
  • Medical management
    • no effective treatment is available against active infection
    • immunization
      • indicated before pregnancy
      • vaccinate mother after pregnancy if serologic titers remain negative
      • indicated in all school-age children in the United States
    • consider abortion
      • if mother is infected or exposed at <20 weeks' gestation
Prognosis, Prevention, and Complications
  • Prognosis
    • poor to fatal in infancy
  • Prevention
    • prenatal serologic screening for mothers
    • universal immunization of all children against rubella
  • Complications
    • systemic organ dysfunction or failure, blindness, cardiac arrhythmias, death
Private Note

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