Pediatrics in Review
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Babies Who Are Small for Gestational Age

Barbara K. Russell DO1
 1 Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY

Small for gestational age (SGA) is a term applied to a heterogeneous population of babies who do not meet the expected growth parameters for their gestational age. The definition of SGA is variable, but the clinical definition used most often is any baby who weighs less than 2500 g and falls below the 10th percentile on the growth chart for its gestational age. These infants are at increased risk for hypoglycemia, polycythemia, and temperature instability and suffer higher neonatal mortality rates.

Although they often are used interchangeably, the terms SGA and intrauterine growth retardation (IUGR) are not always synonymous. Approximately 60% of infants classified as SGA are constitutionally small babies who are small for gestational age but not growth retarded.






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Copyright © 1995 by the American Academy of Pediatrics.