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Published on: November 20, 2015
Preeclampsia was a risk factor for pulmonary interstitial emphysema in preterm infants born ≤32 weeks of gestational
Judith Behnke1,2, Anita Windhorst3, Frank Oehmke4
1Department of General Pediatrics & Neonatology, Justus Liebig University and Universities of Giessen and Marburg Lung Center, Giessen, Germany.
Insights
Preeclampsia and HELLP syndrome are new risk factors for pulmonary interstitial emphysema (PIE) in preterm infants. Early identification of these conditions can help predict infants at risk for PIE and severe complications.
Area of Science:
- Neonatal Medicine
- Pediatric Pulmonology
- Perinatal Research
Background:
- Pulmonary interstitial emphysema (PIE) is a serious complication in preterm infants.
- Identifying prenatal and postnatal risk factors for PIE is crucial for improving outcomes.
Purpose of the Study:
- To determine prenatal and postnatal risk factors for PIE in preterm infants.
- To assess the contribution of these risk factors to severe complications.
Main Methods:
- Retrospective analysis of 179 preterm infants (up to 32 weeks gestational age).
- Chest X-rays analyzed within the first five days of life.
- Univariate analyses and multivariable logistic regression used to identify risk factors.
Main Results:
- Confirmed known risk factors: gestational age and birthweight.
- Identified preeclampsia and HELLP syndrome as additional risk factors for PIE (P=.027).
- Associated PIE with respiratory distress syndrome, increased oxygen requirements, and surfactant use.
Conclusions:
- Preeclampsia and HELLP syndrome are potential additional risk factors for PIE in preterm infants.
- Inclusion of these conditions in future studies can aid early identification of at-risk infants.
Aim:
This study determined the prenatal and postnatal risk factors for pulmonary interstitial emphysema (PIE) in preterm infants born at up to 32 weeks of gestational age (GA) and their contribution to severe complications.
Methods:
We studied 179 preterm infants, who had undergone chest X-rays during the first five days of life at Justus Liebig University Giessen, Germany, between 2016 and 2017. Of these, 33 were retrospectively classified as PIE and 146 as non-PIE. The PIE cases were also matched with 33 non-PIE cases by GA and gender. Risk factors were identified by univariate analyses and multivariable logistic regression.
Results:
Previously known risk factors for pulmonary interstitial emphysema were confirmed, including GA and birthweight and the associations with adverse outcomes like intraventricular haemorrhage and mortality. We identified preeclampsia and haemolysis, elevated liver enzymes and low platelet count (HELLP) syndrome as additional risk factors for PIE (P = .027), and lung impairment was associated with respiratory distress syndrome (P = .001), higher maximum inspired oxygen (P = .014) and needing surfactant (P = .006).
Conclusion:
Preeclampsia and HELLP syndrome were identified as possible additional risk factors for PIE in preterm infants. These conditions should be included in future studies, to identify preterm infants at risk of PIE straight after birth.
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