Weight for gestational age affects the mortality of late preterm infants
| Autor: | Gregory J. Stoddard, Ginger Guest-Warnick, Carrie L. Byington, Laurie S. Pulver, Paul C. Young |
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| Rok vydání: | 2009 |
| Předmět: |
Male
Pediatrics medicine.medical_specialty Late preterm infant Term Birth Birth weight Gestational Age Infant Premature Diseases Cohort Studies Cause of Death Utah medicine Odds Ratio Birth Weight Humans Cause of death Retrospective Studies business.industry Mortality rate Infant Newborn Gestational age Infant Infant mortality Survival Rate Relative risk Pediatrics Perinatology and Child Health Infant Small for Gestational Age Female Underweight medicine.symptom business |
| Zdroj: | Pediatrics. 123(6) |
| ISSN: | 1098-4275 |
| Popis: | BACKGROUND. Late preterm infant mortality is higher than that for term newborns. The association between weight for gestational age (WGA) category and late preterm mortality has not been well described. OBJECTIVES. Our objectives for this research were as follows: (1) to compare neonatal and infant mortality rates of SGA, AGA, and LGA late preterm, early term, and term newborns; (2) to determine the relative risk of neonatal and infant death for each WGA category; and (3) to examine causes of neonatal and infant death. METHODS. We reviewed linked birth and death certificate data for all infants from Utah born between 1999 and 2005 with a GA ≥34 weeks. We calculated neonatal and infant mortality rates for each GA/birth weight stratum and estimated mortality rate ratios using AGA term infants as the reference. International Classification of Diseases, Ninth Revision, codes were used to classify cause of death. RESULTS. There were 343322 newborns with GA ≥34 weeks from 1999 to 2005. Late preterm SGA infants were ∼44 times more likely than term AGA newborns to die in their first month and 22 times more likely to die in their first year. When infants dying from congenital conditions were excluded, the differences in mortality rate ratios persisted for SGA infants, especially those born in the late preterm period. CONCLUSIONS. Being SGA substantially increases the already higher mortality of late preterm and early term newborns. This increased risk cannot be fully explained by an increased prevalence of lethal congenital conditions among SGA late preterm newborns. Clinicians caring for late preterm and early term newborns should be cognizant of their WGA category. |
| Databáze: | OpenAIRE |
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