secondary atelectasis

secondary atelectasis
1. absorption atelectasis occurring at birth or in the newborn period, in which the pulmonary alveoli collapse after initial expansion by air; it is due to obstruction of the airway which prevents further entrance of air or to prevention of air from remaining in the alveoli by increased surfaces forces, occurring as a result of inhalation of amniotic debris or mucous plugs, deficiency of pulmonary surfactant as in neonatal respiratory distress syndrome, obstruction by congenital abnormalities; or abnormal external pressure upon the lung. 2. absorption a.

Medical dictionary. 2011.

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