To investigate the risk factors and treatment of subdural effusion after decompressive craniectomy.

From December 2014 to December 2016 in the Department of Nerurosurgery of the General Hospital of Chinese People’s Armed Police Forces, a total of 31 patients with subdural effusion after decompressive craniectomy were selected, and their clinical data were retrospectively analyzed, the cases with subdural effusion were treated by elastic bandage and lumbar puncture drainage, the patients who were difficult to cure were cut a small dural to release subdural effusion, then made up with shaping titanium mesh after suture.

Of the 28 cases with ipsilateral subdural effusion treated by decompressive craniectomy received elastic bandage pressure bandage, plastic titanium mesh repair was performed in 2 cases with effusion after skull repair, 3 patients with contralateral subdural effusion and falx subdural effusion lumbar puncture and elastic bandage. Followe-up lasted 3 months to 1 year in all the cases, no subdural effusion recurrence was observed reexamination of skull CT.

Application of elastic bandage dressing bone window for patients with subdural effusion after decompressive craniectomy is conducive to maintain the pressure balance of the cranium and the reduction and generation of subdural effusion, and prevent excessive swelling of brain tissue to improve prognosis.