Searching a dysfunction of corticotropic and thyrotropin axis during the acute phase ( ≤48h ) of a subarachnoid hemorrhage secondary to spontaneous rupture of cerebral aneurysm. Impact on the incidence of complications and recovery are evaluated at 1 month.

Blood sample are made within 48 hours of the onset of bleeding with assay of total plasma cortisol, plasma ACTH at 8 am and thyroid hormones (T3, free T4 , and TSH). Dynamic test ACTH stimulation (test Synacthene) with renewal of serum cortisol to H + 1 (60min). Evaluation in the first 30 days of the incidence of rebleeding, hydrocephalus, of vasospasm, infection and epilepsy. GOS to 1 month.

Searching a dysfunction of corticotropic and thyrotropin axis during the acute phase ( ≤48h ) of a subarachnoid hemorrhage secondary to spontaneous rupture of cerebral aneurysm. Impact on the incidence of complications and recovery are evaluated at 1 month.

Blood sample are made within 48 hours of the onset of bleeding with assay of total plasma cortisol, plasma ACTH at 8 am and thyroid hormones (T3, free T4 , and TSH). Dynamic test ACTH stimulation (test Synacthene) with renewal of serum cortisol to H + 1 (60min). Evaluation in the first 30 days of the incidence of rebleeding, hydrocephalus, of vasospasm, infection and epilepsy. GOS to 1 month.

Inclusion Criteria:

• Acute phase ( ≤48h) of a subarachnoid hemorrhage secondary to spontaneous rupture of cerebral aneurysm (Glasgow coma scale >=9)

Exclusion Criteria:

• Pituitary failure
• Patient with corticosteroids drugs or antithyroid drugs