http://cjns.metapress.com/content/1030477136x207l6/?id=1030477136X207L6
Abstract
Objective and Design: There is controversy among
neurosurgeons regarding whether double burr hole craniostomy (DBHC) is
better than single burr hole craniostomy (SBHC) in the treatment of
chronic subdural hematoma (CSH), in terms of having a lower revision
rate. In order to compare the revision rates after SBHC versus DBHC, we
performed a meta-analysis of the available studies in the literature. Materials and Methods:
Multiple electronic health databases were searched to identify all the
studies published between 1966 and December 2010 that compared SBHC and
DBHC. Data were processed in Review Manager 5.0.18. Effect sizes were
expressed in pooled odds ratio (OR) estimates, and due to heterogeneity
between studies we used random effect of the inverse variance weighted
method to perform the meta-analysis. Results: Five
observational retrospective cohort studies were identified: four
published studies and one unpublished, describing the outcomes of 355
DBHC and 358 SBHC to evacuate 713 CSH in 631 patients. Meta-analysis
showed that there was no significant difference in the revision rates
between double burr hole craniostomy and single burr hole craniostomy
when performed to evacuate CSH. Pooled odds ratio for all the studies
was 0.62 (95% confidence interval 0.26 - 1.46). Conclusions:
The results of this meta-analysis suggest that SBHC is as good as DBHC
in evacuating chronic subdural hematoma and is not associated with a
higher revision rate compared to DBHC.
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