Statin-treated patients with aneurysmal subarachnoid haemorrhage: a meta-analysis.

OBJECTIVE

The cerebral vasospasm, delayed ischemic neurological deficit (DIND), mortality and poor neurological outcome induced by aneurysmal subarachnoid haemorrhage (SAH) remain the major causes of morbidity and mortality in aneurysmal SAH patients. The effects of statin-treated for aneurysmal SAH patients were not comprehensively assessed.

PATIENTS AND METHODS

A systematically literature search was conducted in PubMed, EMBASE, ScienceDirect and Web of Science to identify relevant studies update to March 2015. Data were extracted and appraised independently by two authors. Moreover, fixed or random effects models were applied to calculate pooled results based on the degree of heterogeneity.

RESULT

Nine RCTs and three observational studies with a total of 1957 patients met the inclusion criteria. The results showed that statin treatment was not associated with a decrease in the occurrence of DIND (RR: 0.81, 95% CI: 0.66-1.00, p = 0.05), mortality (RR: 0.90, 95% CI: 0.69-1.18, p = 0.46) and poor neurological outcome (RR: 1.02, 95% CI: 0.86-1.20, p = 0.84), nonetheless, had a potential effect on reducing the incidence of vasospasm (RR: 0.77, 95% CI: 0.66-0.89, p = 0.0006).

CONCLUSIONS

This meta-analysis indicated that the use of statins decreases the occurrence of cerebral vasospasm, whereas did not support a beneficial effect of statins on the occurrence of DIND, death or poor neurological outcomes in patients with aneurysmal SAH.