“…Such haemorrhages may be fatal, especially in premature babies. The level of pulmonary plasminogen activator in the newborn is high (Ambrus et al, 1965) and this may account for the most severe haemorrhagic manifestations occurring in the lungs. Intracranial haemorrhages are most often initiated by vascular rupture but owing to the relatively poor coagulability of the blood in newborns, it might be wise to delay fibrinolysis, a measure proposed and used with some success in the treatment of subarachnoid haemorrhages (Mullan & Acta Obstet Gynec Scand 49 (1970) Dawley, 1968;NorlCn & Thulin, 1968).…”