Is it dangerous to treat spontaneous intracerebral hemorrhage by minimally invasive surgery plus local thrombolysis in patients with coexisting unruptured intracranial aneurysms?

Objectives: Limited evidence supports the presumed increased frequency of hemorrhage caused by the unruptured intracranial aneurysms which coexist in patients with spontaneous intracerebral hemorrhage treated with minimally invasive surgery plus local thrombolysis. Subsequently, we sought to determine the safety of local thrombolysis for this particular subset of patients. Patients and Methods: We reviewed the medical records of patients treated with minimally invasive surgery plus local thrombolysis for intracerebral hemorrhage between November 2013 to December 2015 in an intensive care unit of a tertiary care hospital. Depending upon the vascular images, unruptured intracranial aneurysms were identified. The primary outcome was any of postoperative intracranial rebleeding. The second outcome included the 30-day death and 6-month follow up graded by Modified Rank Scale. Blind abstractors reviewed the medical data and binary logistic regression was performed to investigate the risk factors of poor prognosis. Results: We identified a cohort of consecutive 188 patients, of whom 23 (12.2%) harbored unruptured intracranial aneurysms. There were 28 aneurysms documented in this study, among which 3 were in the posterior circulation. And in total, 20 (11.3%) cases suffered from postoperative hematoma growth, of which 4 were with aneurysms. Additionally,the 30-day mortality after stroke in patients with aneurysms was 8.69% (2/23), comparable to 13.33% in without (22/165, p = 0.744). The proportion of the favorable outcome at 6-month followup in patients with aneurysms was comparable to that in without (47.8% versus 48.5%, p = 1.000) Insignificant associations were demonstrated between the unruptured intracranial aneurysms and postoperative intracranial rehemorrhage (p = 0.092), 30-day death (p = 0.588) and poor long-term prognosis (p = 0.332), respectively. Conclusion: Our findings suggest that unruptured intracranial aneurysms seem to represent no increased risks of poor outcome after local thrombolysis for intracerbral hematomas.