Patient: onset at 9:00 am on May 21, headache, CT examination bleeding hospitalized Now on May 28 for clamping surgery, headache disappeared Left hand and leg can not be moved, there is sentience. Neurosurgery Department of Shanghai Hospital: The above performance may be originated from several situations: 1, cerebral vascular spasm caused by ischemia of the right hemisphere; 2, the operation side for the right side, the operation of the specific situation is not ominous, it is not easy to guess. MRI scanning + diffusion imaging can be done. If there is infarction reliable consideration of cerebral protection therapy and blood activation therapy (provided that the aneurysm clamping is exact).