title: [Relationship of survival rate, hematoma thickness and midline shift in patients with acute subdural hematomas].
abstract: OBJECTIVE
  To estimate outcomes of patients with acute subdural hematomas by analysing the hematoma thickness, midline shift and the differences between them.
  
  
  METHODS
  Ninety-five patients with acute subdural hematoma were retrospectively studied by calculating hematoma thickness, midline shift and their difference with a statistical analysis of Kaplan-Meier, Wilcoxon-Mann-Whitney U test.
  
  
  RESULTS
  The hematoma thickness ranged from 5.0 to 40.0 mm and midline shift was from 0 to 35.0 mm. Among these patients, 51% died and 49% survived after surgery. 18 patients (19%) showed good or satisfactory results. Kaplan-Meier analysis proved that the survival for patients with hematoma thickness approximately equal to l7 mm and a midline shift 15 mm or whose midline shift exceeded hematoma thickness by 2.2 mm, the survival rate was 50%. Glasgow outcome scale scores were correlated significantly with these parameters.
  
  
  CONCLUSIONS
  The hematoma thickness, midline shift and their difference provided a database from which criteria could be derived, that is crucial for prognosis estimation.
authors.affiliation: Department of Neurosurgery, Minhang Hospital, Ruijin Hospital Group, Shanghai 201102, China.
authors.forename: Jian-qing
authors.initials: JQ
authors.lastname: Wang
authors.forename: Yun-feng
authors.initials: YF
authors.lastname: Li
authors.forename: Liu-guan
authors.initials: LG
authors.lastname: Bian
authors.forename: Jian-kang
authors.initials: JK
authors.lastname: Shen
authors.forename: Ning
authors.initials: N
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D020199:Hematoma, Subdural, Acute / Q000401:mortality* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D015996:Survival Rate