Post-operative care items of note: 1. Keep the aspiratory tract and urethra open. 2. Absolute bed rest for two days after surgery and restrict physical activity for 3-4 weeks to prevent the spring coil from falling off. 3. care of the puncture site: after the postoperative femoral artery puncture site is pressure bandaged, closely observe the pulsation of the artery of the punctured limb foot and the temperature, color and terminal blood flow of the lower limb, and observe whether there is oozing blood and hematoma and petechiae formation in the puncture area. 4. Give high protein, high calorie, high nutrition and easy to digest diet. 5. Prevent seizures. Post-operative care items: 1. Closely observe the changes in condition Post-operative observation should mainly observe the patient’s consciousness, pupil, limb movement, vital signs and headache. 2. 2. prevent sudden increase of intracranial pressure and blood pressure Keep blood pressure stable, because too high blood pressure will cause re-bleeding due to rupture of blood vessels at the operation site, and too low blood pressure will cause cerebral ischemia and cerebral infarction; keep the room environment quiet, avoid emotional excitement, and keep bowel movement smooth. 3. application of Nimotone Nimotone can significantly reduce the occurrence of secondary brain damage in patients, and can effectively dilate cerebral blood vessels in the early stage, but cannot play an antispasmodic role in the late stage because of the degeneration and fibrous proliferation in the cerebral blood vessels. 4. postoperative incision care The condition of the incisional drainage tube should be closely observed, if the drainage fluid is bright red and sticky there may be active bleeding, it should be promptly reported to the doctor, at the same time keep the incisional dressing appearance neat and dry, find the dressing wet should promptly inform the doctor. 5. Prevent seizures.