Background: Cerebral vasospasm (CVS) following aneurysmal subarachnoid hemorrhage (aSAH) is a major cause of disability and mortality, yet its pathogenesis remains incompletely understood. long non-coding RNA HOX Transcript Antisense RNA (lnc-HOTAIR) is involved in the regulation of endothelial cell function, but its role and molecular mechanism in post-aSAH CVS have not been elucidated. This study aimed to investigate whether...