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How do I know if my baby has a lung infection? 

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By CT scans, ARDS lung appeared to be "small" rather than "stiff," leading to the "baby lung" concept.
This “ventilator-induced lung injury vortex” of the shrinking baby lung is opposed by reactive, adaptive, and reparative processes.
Pulmonary inflammation in surveillance BAL has a cumulative effect on structural lung disease extent, more so than infection.

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