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Chronic lung disease in premature infants: a retrospective evaluation of underlying factors
R Heimler1, R G Hoffmann, R J Starshak
1Department of Pediatrics, Medical College of Wisconsin, Milwaukee.
Insights
Premature infants needing respiratory support are at risk for chronic lung disease (CLD). Intubation and low birth weight (BW) significantly increase the likelihood of developing CLD in these vulnerable infants.
Area of Science:
- Neonatology
- Pediatric Pulmonology
Background:
- Chronic lung disease (CLD) is a significant concern in premature infants requiring respiratory support.
- Identifying etiologic factors is crucial for improving outcomes in this population.
Purpose of the Study:
- To investigate the relative contribution of various factors, including mode of ventilation, in the development of CLD in premature infants.
- To determine the association between intubation, birth weight, and the incidence of CLD.
Main Methods:
- Retrospective case-control study of 99 premature infants.
- Analysis of background and management factors, focusing on mode of ventilation (intubation vs. non-intubation).
- Logistic regression to identify risk factors for CLD development.
Main Results:
- Infants who developed CLD had significantly lower birth weights and gestational ages.
- Intubated infants were 4.8 times more likely to develop CLD compared to non-intubated infants.
- Low birth weight infants had a 3.2-fold greater risk of developing CLD.
Conclusions:
- Intubation and low birth weight are significant risk factors for developing chronic lung disease in premature infants requiring respiratory support.
- Mode of ventilation plays a critical role in CLD development, highlighting the importance of non-invasive support strategies when possible.
Abstract:
A retrospective case-control study involving 99 premature infants requiring vigorous respiratory support was conducted to investigate the relative contribution of various etiologic factors in the development of chronic lung disease (CLD). Nineteen of the 99 developed CLD. Background and management factors up to the development of CLD, with attention to mode of ventilation (tube, or face mask/nasal prongs) were investigated. Infants in the CLD group had significantly lower birth weights (BW) (p less than .001) and gestational ages (p less than .01) than those in the non-CLD group. There was no difference in the incidence of intrathoracic airleak or symptomatic patent ductus arteriosus. Of the CLD group, 74% were intubated compared with 35% in the non-CLD group (p less than .002). There was no difference between the groups in the morbidity score of initial pulmonary disease or in the duration of ventilation with various pressures and oxygen concentrations. Multiple logistic regression analysis revealed that intubated infants were 4.8 times more likely to develop CLD than nonintubated infants, and infants with low BW had a 3.2-fold greater risk of developing the disease.