Monitoring brain blood vessel narrowing after brain hemorrhage

This is an observational study for people recovering from a subarachnoid hemorrhage—a type of brain bleed from a ruptured aneurysm. Researchers want to understand what happens when blood vessels in the brain narrow severely after this kind of hemorrhage, and how current treatments like medication and blood pressure management affect outcomes. The study uses advanced monitoring tools to track your brain's condition closely.

After a brain hemorrhage, blood vessels can narrow dangerously and cause a stroke—even after the initial bleeding is stopped. This study aims to better understand why this happens and how doctors can better prevent it using the treatments already available.