Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Natural Course of Initially Non-Operated Cases of Acute Subdural Hematoma : The Risk Factors of Hematoma Progression

  • Son, Seong (Department of Neurosurgery, Gachon University, Gil Medical Center) ;
  • Yoo, Chan Jong (Department of Neurosurgery, Gachon University, Gil Medical Center) ;
  • Lee, Sang Gu (Department of Neurosurgery, Gachon University, Gil Medical Center) ;
  • Kim, Eun Young (Department of Neurosurgery, Gachon University, Gil Medical Center) ;
  • Park, Chan Woo (Department of Neurosurgery, Gachon University, Gil Medical Center) ;
  • Kim, Woo Kyung (Department of Neurosurgery, Gachon University, Gil Medical Center)
  • Received : 2012.10.30
  • Accepted : 2013.08.19
  • Published : 2013.09.28
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Abstract

Objective : The objectives of the present study were to characterize the natural course of initially non-operated traumatic acute subdural hematoma (ASDH) and to identify the risk factors of hematoma progression. Methods : Retrospective analysis was performed using sequential computed tomography (CT) images maintained in a prospective observational database containing 177 ASDH cases treated from 2005 to 2011. Patients were allocated to four groups as followings; 136 (76.8%) patients to the spontaneous resolution group, 12 (6.8%) who underwent operation between 4 hours and 7 days to the rapid worsening group (RWG), 24 (13.6%) who experienced an increase of hematoma and that underwent operation between 7 and 28 days to the subacute worsening group (SWG), and 5 (2.8%) who developed delayed aggravation requiring surgery from one month after onset to the delayed worsening group (DWG). Groups were compared with respect to various factors. Results : No significant intergroup difference was found with respect to age, mechanism of injury, or initial Glasgow Coma Scale. The presence of combined cerebral contusion or subarachnoid hemorrhage was found to be a significant prognostic factor. Regarding CT findings, mixed density was common in the RWG and the SWG. Midline shifting, hematoma thickness, and numbers of CT slices containing hematoma were significant prognostic factors of the RWG and the SWG. Brain atrophy was more severe in the SWG and the DWG. Conclusion : A large proportion of initially non-operated ASDHs worsen in the acute or subacute phase. Patients with risk factors should be monitored carefully for progression by repeat CT imaging.

Keywords

References

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