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Corticosteroids , particularly dexamethasone , are commonly used for treatments in patients with subarachnoid haemorrhage ( SAH ) and primary intracerebral haemorrhage ( PICH ) despite the lack of evidence . Three multidisciplinary studies led by Dr. Roitberg on ( 1 ) Cardiac effects of subarachnoid hemorrhage ( 2 ) Effect of intensive prophylactic care on prevention of deep vein thrombosis and pulmonary embolism , and ( 3 ) Rapid reversal of coagulopathy in surgical candidates on coumadin therapy . Secondary ischaemia is a frequent cause of poor outcome in patients with subarachnoid haemorrhage ( SAH ) . Between 10 and 40 % of all patients with subarachnoid hemorrhage ( SAH ) have an associated vitreous hemorrhage or Terson syndrome .