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Original ArticleOpen Access
Chronic Subdural Hematoma: Drainage vs. No Drainage
Sarnvivad P 
,
Chiewchanvechakul W ,
Chumnanvej S
,
Chiewchanvechakul W ,
Chumnanvej S Objective: To compare the result of chronic subdural hematoma (CSDH) treatment by burr hole with and without closed
system drainage in 143 Thai patients at Ramathibodi Hospital.
Material and Method: A retrospective study of 143 patients with CSDH treatment at Ramathibodi Hospital between 2002 and
2008 was performed. They underwent burr hole with or without drainage according to the preference of the attending
neurosurgeons. The authors compared the result of the two CSDH methods by using CT or MRI of brain post-operatively,
complications, recovery condition, mortality rate, and recurrence.
Results: Ninety-seven patients were treated with closed system drainage and 46 were treated without drainage. There was no
statistical significant distribution in the clinical profiles of both groups. The coagulopathy in both groups might contribute for
the recurrence of CSDH while there was no correlation of the recurrence to the other clinical profiles. Fifteen patients (16%)
in the drainage group had CSDH recurrence while there were 12 patients (26%) in the no drainage group.
Conclusion: Concerning the complete neurological recovery and the recurrence rate of CSDH treatment, there were more
complete neurological recovery cases and a lower recurrence rate of CSDH cases in the drainage group but there was no
statistical significant difference.
Keywords: Chronic Subdural Hematoma (CSDH), Drain and no drain, Recurrence ra
system drainage in 143 Thai patients at Ramathibodi Hospital.
Material and Method: A retrospective study of 143 patients with CSDH treatment at Ramathibodi Hospital between 2002 and
2008 was performed. They underwent burr hole with or without drainage according to the preference of the attending
neurosurgeons. The authors compared the result of the two CSDH methods by using CT or MRI of brain post-operatively,
complications, recovery condition, mortality rate, and recurrence.
Results: Ninety-seven patients were treated with closed system drainage and 46 were treated without drainage. There was no
statistical significant distribution in the clinical profiles of both groups. The coagulopathy in both groups might contribute for
the recurrence of CSDH while there was no correlation of the recurrence to the other clinical profiles. Fifteen patients (16%)
in the drainage group had CSDH recurrence while there were 12 patients (26%) in the no drainage group.
Conclusion: Concerning the complete neurological recovery and the recurrence rate of CSDH treatment, there were more
complete neurological recovery cases and a lower recurrence rate of CSDH cases in the drainage group but there was no
statistical significant difference.
Keywords: Chronic Subdural Hematoma (CSDH), Drain and no drain, Recurrence ra
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