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Risk factors for bronchopulmonary dysplasia in five Portuguese neonatal intensive care units
Hercília Guimarães1, Gustavo Rocha, Gabriela Vasconcellos
1NICU, Hospital de S. João, Porto. hercíliaguimaraes@gmail.com [corrected]
Insights
Bronchopulmonary dysplasia (BPD) affects 12.9% of very low birth weight infants. Key risk factors include low birth weight, severe hyaline membrane disease, sepsis, and prolonged respiratory support and oxygen therapy.
Area of Science:
- Neonatalogy
- Pediatric Pulmonology
- Critical Care Medicine
Background:
- Bronchopulmonary dysplasia (BPD) is a significant complication in premature infants.
- Its pathogenesis is multifactorial, involving prematurity, respiratory distress, oxygen, and mechanical ventilation.
Purpose of the Study:
- To determine the prevalence of BPD in Portuguese Neonatal Intensive Care Units (NICUs).
- To identify specific risk factors for BPD to improve management strategies.
Main Methods:
- A cohort of 256 very low birth weight infants (gestational age <30 weeks and/or birth weight <1250 g) was studied.
- Data were collected from hospital charts between 2004 and 2006.
- BPD was defined as oxygen dependency at 36 weeks postconceptional age.
Main Results:
- BPD prevalence was 12.9% (33/256).
- Risk decreased with increasing gestational age and birth weight.
- Significant risk factors included low birth weight, severe hyaline membrane disease, sepsis, prolonged mechanical ventilation, and extended oxygen therapy.
Conclusions:
- Low birth weight, severe hyaline membrane disease, sepsis, and duration of respiratory support/oxygen therapy are critical risk factors for BPD.
- Implementing targeted practices to mitigate these factors is essential for reducing lung injury in neonates.
Unlabelled:
The pathogenesis of bronchopulmonary dysplasia (BPD) is clearly multifactorial. Specific pathogenic risk factors are prematurity, respiratory distress, oxygen supplementation, mechanical ventilation (MV), inflammation, patent ductus arteriosus (PDA), etc.
Aim:
To evaluate BPD prevalence and to identify risk factors for BPD in five Portuguese Neonatal Intensive Care Units in order to develop better practices the management of these newborns.
Material And Methods:
256 very low birth weight infants with gestational age (GA) <30 weeks and/or birthweight (BW) <1250 g admitted in five Portuguese NICUs, between 2004 and 2006 were studied. A protocol was filled in based on clinical information registered in the hospital charts. BPD was defined as oxygen dependency at 36 weeks of postconceptional age.
Results:
BPD prevalence was 12.9% (33/256). BPD risk decreased 46% per GA week and of 39% per 100g BW. BPD risk was significantly higher among newborns with low BW (adj OR= 0.73, 95% CI=0.57- 0.95), severe hyaline membrane disease (adj OR= 9.85, 95% CI=1.05-92.35), and those with sepsis (adj OR=6.22, 95% CI=1.68-23.02), those with longer duration on ventilatory support (42 vs 3 days, respectively in BPD and no BPD patients, p <0.001) and longer duration of FiO2>0.30 (85 vs 5 days, respectively in BPD and no BPD patients, p <0.001).
Comments:
The most relevant risk factors were low birth weight, severe hyaline membrane disease, duration of respiratory support and oxygen therapy, and nosocomial sepsis. The implementation of potentially better practices to reduce lung injury in neonates must be addressed to improve practices to decrease these risk factors.
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