The data suggest that gestational age, requirement of neonatal oxygen supplementation, bronchopulmonary dysplasia and tracheal colonisation with Haemophilus influenzae are correlated with prolonged mechanical ventilation in children with bronchiolitis. Only bronchopulmonary dysplasia was associated with a need for extracorporeal membrane oxygenation that may provide lifesaving support in infants refractory to conventional management.

Pulmonary alveolar proteinosis is a rare disease of unknown etiology, characterized by progressive respiratory failure. Lung lavage has only been applied in a few children. A 6 month old boy suffering from severe pulmonary alveolar proteinosis was treated with three lung lavages. The first two were partial (or unilateral) lavages; a 3.5 mm flexible bronchoscope was introduced adjacent to a no. 3 cuffed endotracheal tube. This procedure allowed selective ventilation of one lung, and contralateral lung lavage. Respiratory improvement was observed during 1 week after the two procedures. At the third lavage we used partial veno-venous extracorporeal circulation because of severe respiratory failure. A significant improvement during the 5 following months was achieved. These results suggest that both partial and total lung lavage can be performed even in young infants and they may control the declining respiratory status in severe pulmonary alveolar proteinosis.

A 14-year-old girl with high fever, dyspnea and bilateral miliary nodules on chest X-ray, developed a rapidly progressive respiratory failure associated with histiocytic hemophagocytosis. Histologic examination of bone marrow biopsy revealed tuberculous granulomas with caseating necrosis. We report a pediatric case in which treatment with extracorporeal lung support and epipodophyllotoxin VP 16-213 was successful.

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