title: Analysis of complications following decompressive craniectomy for traumatic brain injury.
abstract: OBJECTIVE
  Adequate management of increased intracranial pressure (ICP) is critical in patients with traumatic brain injury (TBI), and decompressive craniectomy is widely used to treat refractory increased ICP. The authors reviewed and analyzed complications following decompressive craniectomy for the management of TBI.
  
  
  METHODS
  A total of 89 consecutive patients who underwent decompressive craniectomy for TBI between February 2004 and February 2009 were reviewed retrospectively. Incidence rates of complications secondary to decompressive craniectomy were determined, and analyses were performed to identify clinical factors associated with the development of complications and the poor outcome.
  
  
  RESULTS
  Complications secondary to decompressive craniectomy occurred in 48 of the 89 (53.9%) patients. Furthermore, these complications occurred in a sequential fashion at specific times after surgical intervention; cerebral contusion expansion (2.2 ± 1.2 days), newly appearing subdural or epidural hematoma contralateral to the craniectomy defect (1.5 ± 0.9 days), epilepsy (2.7 ± 1.5 days), cerebrospinal fluid leakage through the scalp incision (7.0 ± 4.2 days), and external cerebral herniation (5.5 ± 3.3 days). Subdural effusion (10.8 ± 5.2 days) and postoperative infection (9.8 ± 3.1 days) developed between one and four weeks postoperatively. Trephined and post-traumatic hydrocephalus syndromes developed after one month postoperatively (at 79.5 ± 23.6 and 49.2 ± 14.1 days, respectively).
  
  
  CONCLUSIONS
  A poor GCS score (≤ 8) and an age of ≥ 65 were found to be related to the occurrence of one of the above-mentioned complications. These results should help neurosurgeons anticipate these complications, to adopt management strategies that reduce the risks of complications, and to improve clinical outcomes.
authors.affiliation: Department of Neurosurgery, Seoul National University Boramae Medical Center, Seoul, Korea.
authors.forename: Seung Pil
authors.initials: SP
authors.lastname: Ban
authors.forename: Young-Je
authors.initials: YJ
authors.lastname: Son
authors.forename: Hee-Jin
authors.initials: HJ
authors.lastname: Yang
authors.forename: Yeong Seob
authors.initials: YS
authors.lastname: Chung
authors.forename: Sang Hyung
authors.initials: SH
authors.lastname: Lee
authors.forename: Dae Hee
authors.initials: DH
authors.lastname: Han