Abstract:
OBJECTIVE:Improvement in survival of extremely premature infants over the past several decades has resulted in an increase in the number of infants with chronic lung disease (CLD). Historical neonatal exposures associated with CLD now less frequently precede the disease. There is now increasing interest in exposures and events before delivery that predict CLD. The objective of this study was to identify current prenatal predictors of CLD. METHODS:We collected data about prenatal, placental, and neonatal characteristics of 1241 newborns who were delivered before completion of the 28th week of gestation. Associations between prenatal factors, microbiologic and histologic characteristics of the placenta, and selected neonatal characteristics and CLD risk were first evaluated in univariate analyses. Subsequent multivariate analyses investigated the contribution of prenatal factors, particularly fetal growth restriction (FGR), to CLD risk. RESULTS:Among the prenatal factors, birth weight z scores, used as a marker of FGR, provided the most information about CLD risk. Indicators of placental inflammation and infection were not associated with increased risk of CLD. Within nearly all strata of prenatal, placental, and neonatal variables, growth-restricted infants were at increased CLD risk, compared with infants who were not growth-restricted. FGR was the only maternal or prenatal characteristic that was highly predictive of CLD after adjustment for other risk factors. CONCLUSIONS:FGR is independently associated with the risk of CLD. Thus, factors that control fetal somatic growth may have a significant impact on vulnerability to lung injury and in this way increase CLD risk.
journal_name
Pediatricsjournal_title
Pediatricsauthors
Bose C,Van Marter LJ,Laughon M,O'Shea TM,Allred EN,Karna P,Ehrenkranz RA,Boggess K,Leviton A,Extremely Low Gestational Age Newborn Study Investigators.doi
10.1542/peds.2008-3249subject
Has Abstractpub_date
2009-09-01 00:00:00pages
e450-8issue
3eissn
0031-4005issn
1098-4275pii
peds.2008-3249journal_volume
124pub_type
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