1) PSR staining allows robust and reliable quantification of collagen deposition in human lung tissue and allows to distinguish between « compact » (old) and « scattered » (young) collagen fibers 2) Total CPA (all collagen fibers) increases in ARDS compared to controls No difference between COVID-related and COVID-unrelated ARDS 3) Dramatic increase of « scattered » (young) fibers in all ARDS patients, with no significant difference between COVID-related or -unrelated ARDS 4) Scattered fibers correlate with disease severity in all ARDS patients No correlation with disease/MV duration
Gérard, Ludovic ; et. al. Automated digital quantification of parenchymal lung fibrosis in COVID-19 related and -unrelated ARDS.Congrès de la Société Belge de Soins intensifs SIZ (15/06/2020).