- The ISAT has shifted the focus toward endovascular treatment for intracranial aneurysms, but its impact on reducing the risk of aneurysmal subarachnoid hemorrhage (aSAH) is still uncertain.
- Analysis of National Inpatient Sample data from 2004-2014 showed that while procedures for aSAH have decreased significantly each year, treatment rates for unruptured aneurysms have remained stable.
- The study indicates that the relative risk of undergoing treatment for aSAH is decreasing, whereas the risk for unruptured aneurysms has not changed significantly over time.