PEDIATRICS Vol. 69 No. 4 April 1982, pp. 426-431
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Developmental and Neurologic Sequelae of Neonatal Hyperviscosity Syndrome

Virginia D. Black MD1, Lula O. Lubchenco MD1, Dennis W. Luckey MS1, Beverly L. Koops MD1, Gail A. McGuinness MD1, Douglas P. Powell MD1, and Alan L. Tomlinson MD1

1 Newborn Service, University Hospital, University of Colorado Health Sciences Center, Denver; Departments of Pediatrics, Wayne State University and Hutzel Hospital, Detroit; and Newborn Center, Denver Children's Hospital, Denver

One hundred eleven consecutive infants with neonatal hyperviscosity were identified by screening all newborns for polycythemia in an 18-month period. These polycythemic infants were matched with nonpolycythemic newborns for birth weight, gestational age, Apgar scores, and sex. Maternal, intrapartum, and neonatal data were analyzed for associated morbidity. Maternal preeclampsia was more common among the hyperviscous patients than among control subjects. Hypoglycemia was also significantly increased among the hyperviscous patients. Follow-up studies at 1 to 3 years of age revealed a significantly higher incidence (38% vs 11%) of motor and neurologic abnormalities in the infants with neonatal hyperviscosity. The data suggested that concurrent hypoglycemia increased the risk of a poor outcome in hyperviscous infants inasmuch as 55% of infants with both characteristics were abnormal at follow-up. This, however, was not significantly different from the outcome of infants with hyperviscosity alone (P > .05 but < .1). Further studies will be needed to confirm or deny this relationship.

Submitted on June 25, 1981
Accepted on January 8, 1982


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