Systemic Immune-Inflammation Index Predicts Delayed Cerebral Vasospasm After Aneurysmal Subarachnoid Hemorrhage

Delayed cerebral vasospasm is a feared complication of aneurysmal subarachnoid hemorrhage (SAH).To investigate the relationship of systemic inflammation, measured using the systemic immune-inflammation (SII) index, with delayed angiographic or sonographic vasospasm. We hypothesize that early elevations in SII index serve as an independent predictor of vasospasm.We retrospectively reviewed the medical records of 289 SAH patients for angiographic...