“…High inspired oxygen partial pressures are known to cause pulmonary damage, with capillary proliferation and exudation into the alveoli (Pratt, 1958(Pratt, , 1965Kistler, Caldwell and Weibel, 1967;Nash, Blennerhassett and Pontoppidan, 1967;Robinson et al, 1967). Oxygen toxidty has been suggested as a cause of pulmonary haemorrhage in neonates by Shanklin and Wolfson (1967) and Boothby and DeSa (1973) and incriminated in the aetiology of bronchopulmonary dysplasia, a condition which includes alveolar necrosis and pulmonary fibrosis (Northway, Rosan and Porter, 1967;Hawker, Reynolds and Taghizadeh, 1967).…”