Bilateral chronic subdural hematoma: unilateral or bilateral drainage?

Author:

Andersen-Ranberg Nina Christine1,Poulsen Frantz Rom2,Bergholt Bo3,Hundsholt Torben4,Fugleholm Kåre1

Affiliation:

1. Department of Neurosurgery, Rigshospitalet University Hospital, Copenhagen;

2. Department of Neurosurgery, Odense University Hospital, Odense;

3. Department of Neurosurgery, Aarhus University Hospital, Aarhus; and

4. Department of Neurosurgery, Aalborg University Hospital, Aalborg, Denmark

Abstract

OBJECTIVEBilateral chronic subdural hematoma (bCSDH) is a common neurosurgical condition frequently associated with the need for retreatment. The reason for the high rate of retreatment has not been thoroughly investigated. Thus, the authors focused on determining which independent predictors are associated with the retreatment of bCSDH with a focus on surgical laterality.METHODSIn a national database of CSDHs (Danish Chronic Subdural Hematoma Study) the authors retrospectively identified all bCSDHs treated in the 4 Danish neurosurgical departments over the 3-year period from 2010 to 2012. Univariate and multivariate analyses were performed to determine the relationship between retreatment of bCSDH and clinical, radiological, and surgical variables.RESULTSTwo hundred ninety-one patients with bCSDH were identified, and 264 of them underwent unilateral (136 patients) or bilateral (128 patients) surgery. The overall retreatment rate was 21.6% (57 of 264 patients). Cases treated with unilateral surgery had twice the risk of retreatment compared with cases undergoing bilateral surgery (28.7% vs 14.1%, respectively, p = 0.002). In accordance with previous studies, the data also showed that a separated hematoma density and the absence of postoperative drainage were independent predictors of retreatment.CONCLUSIONSIn bCSDHs bilateral surgical intervention significantly lowers the risk of retreatment compared with unilateral intervention and should be considered when choosing a surgical procedure.

Publisher

Journal of Neurosurgery Publishing Group (JNSPG)

Subject

Genetics,Animal Science and Zoology

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