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Pulmonary complications of long-term respirator care in infants
Insights
Infants requiring long-term respirator care may develop bronchopulmonary dysplasia or similar lung lesions. Lung prematurity appears to contribute to these adverse outcomes in premature infants.
Area of Science:
- Pediatric Pathology
- Neonatal Respiratory Medicine
- Pulmonary Pathology
Background:
- Infantile respiratory distress often necessitates long-term mechanical ventilation.
- Bronchopulmonary dysplasia (BPD) is a significant complication in infants requiring respiratory support.
- Understanding the histological changes associated with prolonged ventilation is crucial for neonatal care.
Purpose of the Study:
- To examine the histological findings in infants who received long-term respirator care.
- To investigate the relationship between prematurity and the development of BPD or BPD-like lesions.
- To identify common and distinct pathological changes in different subgroups of infants under respiratory support.
Main Methods:
- Autopsy examination of twelve infants (up to 205 days old) who underwent long-term respirator care.
- Classification of cases into three subgroups based on primary diagnosis and gestational age.
- Histological analysis of lung tissues to identify specific pathological features.
Main Results:
- All studied infants exhibited histological changes including alveolar cell desquamation, regeneration, fibrosis, and smooth muscle proliferation.
- Bronchopulmonary dysplasia was observed in infants treated for hyaline membrane disease.
- Bronchopulmonary dysplasia-like lesions were noted in very premature infants and those not extremely premature, with lung prematurity implicated in the latter group.
- Other concurrent pathologies such as pneumonia and persistent ductus arteriosus were also present.
Conclusions:
- Long-term respirator care in infants is associated with significant lung pathology, including BPD and BPD-like changes.
- Infant lung prematurity is a critical factor in the development of BPD-like lesions.
- Histological findings highlight the impact of mechanical ventilation and underlying conditions on neonatal lung development.
Abstract:
Twelve infantile autopsy cases up to 205 days using a long-term respirator care were examined in this study. These cases could be divided into three subgroups. The first group included the cases treated with long-term respirator care for hyaline membrane disease. In this subgroup, bronchopulmonary dysplasia was found during the course. The second group included the cases treated with long-term respirator care for other causes and were very premature infants. In this group, some cases showed bronchopulmonary dysplasia-like lesions. The third group was similar to the second group except for not being very premature. All groups had similar histological changes including alveolar cell desquamation, regeneration of alveolar lining cells, fibrosis, and smooth muscle-like tissue formation of alveolar walls. However, the premature lung tissues remained characteristically in some cases of the second group. In this group, the prematurity of lung was thought responsible for the development of bronchopulmonary dysplasia-like lesion. In addition to bronchopulmonary dysplasia or bronchopulmonary dysplasia-like lesion, other changes including pneumonia, persistent ductus arteriosus, cytomegalic inclusion disease and so forth were discussed.