Examination of the Premature Infant
The definition of prematurity has changed over the last 10–15 years with the realization that not all small infants are born significantly early. It is clear that birth weight and gestational age are usually closely correlated, but in individual cases they may be discrepant. This has given rise to the concept of a child having appropriate weight for gestational age (AGA), being small for gestational age (SGA), or being large for gestional age (LGA). Each of these states has implications for specific underlying problems, common complications, and prognosis1 (Table 3-1). They are defined by plotting the child’s gestational age against birth weight and determining whether or not the weight is outside of acceptable limits, generally set at two or more standard deviations from the mean (Figure 3-1).
KeywordsBirth Weight Continuous Positive Airway Pressure Premature Infant Cerebral Palsy Perinatal Asphyxia
Unable to display preview. Download preview PDF.
- 1.Lubchenko, I,. O., 1976, The High Risk Infant, W.B. Saunders, Philadelphia.Google Scholar
- 2.Dubowitz, I.., and Dubowitz, V., 1977, Gestational Age of the Newborn, Addison-Wesley, Reading, MA.Google Scholar
- 3.Gaston, A. H., 1977, Small for gestational age (SGA) infants, in: Pediatrics, 16th cd. ( A. M. Rudolph, ed.), Appleton-Century-Crofts, New York.Google Scholar
- 4.Lubchenko, L. O., Hansman, C., and Boyd, E., 1956, Intrauterine growth in length and head circumference as estimated from live births at gestational ages 26 to 42 weeks, Pediatrics 37: 403–408.Google Scholar