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KMID : 1143720110070020068
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Korean Journal of Neurotrauma
2011 Volume.7 No. 2 p.68 ~ p.73
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Clinical Analysis of Risk Factors Associated with the Recurrence of Chronic Subdural Hematoma
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Ahn Sung-Yong
Kim Jong-Hyun
Ha Sung-Kon
Kim Joo-Han
Kwon Taek-Hyun
Park Youn-Kwan
Chung Heung-Seob
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Abstract
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ObjectivesChronic subdural hematoma (CSDH) is one of the most common types of intracranial hemorrhage, especially in the elderly. Burr hole drainage has been widely used to treat CSDH. However, the incidence of recurrent CSDH varies from 3.7 to 30% after surgery. The purpose of this study was to demonstrate the risk factors associated with the recurrence of CSDH in burr hole drainage technique.
Methods:A total of 260 consecutive cases who underwent burr hole drainage for CSDH were included in this study. Thirty patients (11.5%) underwent a repeated operation because of the recurrence of CSDH. We analyzed retrospectively the demographic, clinical, radiologic factors and surgical treatments associated with the recurrence of CSDH.
Results:In our study, two risk factors were found to be independently related to the recurrence of CSDH. The incidence of CSDH recurrence in the high- or mixed-density groups was significantly higher than those in the low- or iso-density groups (p<0.001). The duration of drainage was also significantly related to the recurrence rate (p=0.007). Prolonged duration of drainage did not increase the frequency of infection in our series.
Conclusion:These results suggest that high- and mixed-density shown on computed tomographic (CT) scan was closely related with a high incidence of recurrence. Therefore, the operation could be delayed in those cases unless severe symptoms or signs are present. Also, we found in this study that the duration of drainage play an important role in the treatment of CSDH and 3 full days of drainage seems to be necessary.
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KEYWORD
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Chronic subdural hematoma, Recurrence, Duration of drainage
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