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Hyperviscosity - newborn

  • Alternative Names

    Neonatal polycythemia


    The baby will be monitored for complications of hyperviscosity. If needed, an exchange transfusion will be done to lower the amount of red blood cells that are moving through the baby's blood vessels.

    Other treatment may include increasing body fluids.

    Support Groups

    Expectations (prognosis)

    The outlook is good for infants with mild hyperviscosity and those who receive treatment for severe hyperviscosity.

    Some children may have mild changes in neurological development. Parents who believe their child may show any signs of developmental delay should contact their health care provider.


    Complications may include:

    • Death of intestinal tissue (necrotizing enterocolitis)
    • Decreased fine motor control
    • Kidney failure
    • Seizures
    • Strokes