Risk assessment of chronic subdural hematoma after surgical clipping of intracranial aneurysms / 中国脑血管病杂志

ABSTRACT

Objective To compare the incidence of chronic subdural hematoma(CSDH) and its risk factors after surgical clipping unruptured intracranial aneurysms(UIA) and ruptured intracranial aneurysms (RIA). Methods From January 2006 to December 2015,410 consecutive patients with UIA and 464 patients with RIA treated with aneurysm clipping at the Department of Neurosurgery,Hanzhong Central Hospital were enrolled retrospectively. According to whether having postoperative CSDH or not(evaluating subdural effusion and its degree with head CT scan),the difference of the incidence of CSDH after aneurysm clipping in patients with UIA and RIA were compared,and logistic regression analysis was used to evaluate the risk factors for the occurrence of postoperative CSDH. Results (1) The incidence of CSDH after UIA clipping was higher than that of RIA(11.0% [45/410] vs. 3.0% [14/464]). There was significant difference (P<0.01). The rate of surgical treatment for CSDH because of the symptoms of nervous system injury in patients with UIA was higher than that in patients with RIA(35.6% [16/45] vs. 28.6% [4/14], P<0.05). (2) Multivariate logistic regression analysis showed that unruptured aneurysms (OR,2.59, 95% CI 2.19-3.06,P<0.01),subdural effusion ≥5 mm (OR,1.98,95% CI 1.94-2.03,P<0.01), and CT value≥40 HU (OR,2.87,95% CI 2.65-3.01,P<0.01) were the independent risk factors for postoperative CSDH in patients with intracranial aneurysm. Conclusions The incidence of CSDH was significantly higher than that of RIA after UIA clipping. UIA,subdural effusion ≥5 mm,and CT value ≥40 HU were the independent risk factors for CSDH of intracranial aneurysms.