Hyperviscosity - newborn

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Blood cells

Neonatal polycythemia

Symptoms may include:

• Extreme sleepiness
• Feeding problems
• Seizures
• Very ruddy (red) skin color

There may be signs of breathing problems, kidney failure, and newborn jaundice.

If the baby has symptoms of hyperviscosity, a blood test to count the number of red blood cells will be done. This test is called a hematocrit.

Other tests may include:

• Blood gases to check oxygen level in the blood
• Blood sugar (glucose) to check for low blood sugar
• Blood urea nitrogen (BUN), a substance that forms when protein breaks down
• Creatinine, a substance produced by muscles that can build up in the blood if the kidneys aren't working properly
• Urinalysis

Review Date: 06/17/2011
Reviewed By: Kimberly G Lee, MD, MSc, IBCLC, Associate Professor of Pediatrics, Division of Neonatology, Medical University of South Carolina, Charleston, SC. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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